Vibro Equipment & Parts Far East Co. specializes in vibroflotation and vibro replacement ground improvement equipment. They offer a range of vibroflots from 180 kW to 300 kW that can be used for compaction, stone column construction, and other applications. The document provides details on vibroflotation and vibro replacement methods, specifications for their vibroflot models, and information on how to select the right configuration using their online tool.
This document provides information about Vibro Equipment & Parts Far East Co., which specializes in ground improvement solutions using vibroflotation and vibro replacement techniques. It describes the vibroflotation process of densifying soils using a vibroflot machine that vibrates and saturates soils to compact them. It also details vibro replacement methods that create columns of crushed stone or concrete in soils, improving load bearing and reducing settlement. The document outlines the wet top feed and dry bottom feed methods for vibro replacement and provides specifications and contact information.
VIBRO Equipment & Parts Far East Co is a joint British/German owned and managed company operating from Subic Bay Freeport Zone, Philippines. We are an internationally focused company supporting the ground improvement industry.
We design, engineer and manufacture our range of Vibroflots, moving the way forward with a constant stream of innovative and fresh ideas, coupled with a strong will to succeed. We specialize
in offering complete equipment solutions to existing and new scenarios, catering for both on and off shore Job Sites.
Our entire range of Vibroflots and all of the associated attachments are completely designed and engineered in-house using the latest CAD software and the experience and knowledge of over 27 years in the Foundation and Ground Improvement Industries.
The underwater concreting techniques designed mostly to prevent cement washout. These methods did not obtain the full purpose of avoiding cement wash out at early stages of using under water concreting apart from cases where large masses of concreting were employed.
Ground water can be controlled through both permanent and temporary exclusion methods. Permanent exclusion methods include sheet piling, diaphragm walls, slurry trench cut-offs, chemical grouting, resin grout, cement grout, clay/cement grout, and bituminous grout, which form barriers to water flow. Temporary exclusion lowers the water table using methods like sump pumping, well-point systems, horizontal drains, and electro-osmosis. Excavation works require ground water control to stabilize soils and exclude water from entering the excavation area.
This document discusses different types of failures that can occur in flexible pavements. It describes various structural distresses like alligator cracking, depressions, corrugations, shoving, potholes, rutting and swelling that result from failures in the subgrade, sub-base or base course layers. It also outlines environmental distresses including bleeding, block cracking, bumps and sags, edge cracking, joint reflection cracking, raveling, cold joints, and transverse/longitudinal cracking caused by factors like temperature changes, traffic loading, and aging of materials. Proper construction of each pavement layer and consideration of environmental conditions is necessary to prevent these distresses and extend the life of flexible pavements.
The document discusses various methods for controlling groundwater, which can be divided into permanent and temporary exclusion. Permanent exclusion methods like sheet piling, diaphragm walls, and grouting form barriers to block groundwater flow. Temporary methods like dewatering wells and deep boring lower the water table to allow for excavation work before groundwater levels return. The effectiveness of each method depends on the soil type and project needs.
The presentation discussed various methods of dewatering on construction sites, including sump pumping, wellpoint systems, ejector wells, ground freezing, and deep wells. It described the purpose of dewatering, factors that influence selection of methods, and advantages and limitations of each approach. The methods vary in their suitability based on soil type, required depth of drawdown, and other site-specific factors. Proper dewatering is important for construction efficiency and stability.
Breakout Session: Understanding Ground Bearing Capacities
Ground stability is one of the most important factors to be considered with crane set up. This session will review the underlying physics and reaction forces, as well as group pressures. Learn best practices in ground stabilization methods and techniques including crane pads and mats; cribbing and shoring; crawler crane pads and more.
Speakers: Jeff Steiner, Owner, Bigfoot Construction Equipment
Mike Walsh, President, Dearborn Companies
This document provides information about Vibro Equipment & Parts Far East Co., which specializes in ground improvement solutions using vibroflotation and vibro replacement techniques. It describes the vibroflotation process of densifying soils using a vibroflot machine that vibrates and saturates soils to compact them. It also details vibro replacement methods that create columns of crushed stone or concrete in soils, improving load bearing and reducing settlement. The document outlines the wet top feed and dry bottom feed methods for vibro replacement and provides specifications and contact information.
VIBRO Equipment & Parts Far East Co is a joint British/German owned and managed company operating from Subic Bay Freeport Zone, Philippines. We are an internationally focused company supporting the ground improvement industry.
We design, engineer and manufacture our range of Vibroflots, moving the way forward with a constant stream of innovative and fresh ideas, coupled with a strong will to succeed. We specialize
in offering complete equipment solutions to existing and new scenarios, catering for both on and off shore Job Sites.
Our entire range of Vibroflots and all of the associated attachments are completely designed and engineered in-house using the latest CAD software and the experience and knowledge of over 27 years in the Foundation and Ground Improvement Industries.
The underwater concreting techniques designed mostly to prevent cement washout. These methods did not obtain the full purpose of avoiding cement wash out at early stages of using under water concreting apart from cases where large masses of concreting were employed.
Ground water can be controlled through both permanent and temporary exclusion methods. Permanent exclusion methods include sheet piling, diaphragm walls, slurry trench cut-offs, chemical grouting, resin grout, cement grout, clay/cement grout, and bituminous grout, which form barriers to water flow. Temporary exclusion lowers the water table using methods like sump pumping, well-point systems, horizontal drains, and electro-osmosis. Excavation works require ground water control to stabilize soils and exclude water from entering the excavation area.
This document discusses different types of failures that can occur in flexible pavements. It describes various structural distresses like alligator cracking, depressions, corrugations, shoving, potholes, rutting and swelling that result from failures in the subgrade, sub-base or base course layers. It also outlines environmental distresses including bleeding, block cracking, bumps and sags, edge cracking, joint reflection cracking, raveling, cold joints, and transverse/longitudinal cracking caused by factors like temperature changes, traffic loading, and aging of materials. Proper construction of each pavement layer and consideration of environmental conditions is necessary to prevent these distresses and extend the life of flexible pavements.
The document discusses various methods for controlling groundwater, which can be divided into permanent and temporary exclusion. Permanent exclusion methods like sheet piling, diaphragm walls, and grouting form barriers to block groundwater flow. Temporary methods like dewatering wells and deep boring lower the water table to allow for excavation work before groundwater levels return. The effectiveness of each method depends on the soil type and project needs.
The presentation discussed various methods of dewatering on construction sites, including sump pumping, wellpoint systems, ejector wells, ground freezing, and deep wells. It described the purpose of dewatering, factors that influence selection of methods, and advantages and limitations of each approach. The methods vary in their suitability based on soil type, required depth of drawdown, and other site-specific factors. Proper dewatering is important for construction efficiency and stability.
Breakout Session: Understanding Ground Bearing Capacities
Ground stability is one of the most important factors to be considered with crane set up. This session will review the underlying physics and reaction forces, as well as group pressures. Learn best practices in ground stabilization methods and techniques including crane pads and mats; cribbing and shoring; crawler crane pads and more.
Speakers: Jeff Steiner, Owner, Bigfoot Construction Equipment
Mike Walsh, President, Dearborn Companies
Micropiles have been used since the 1950s but faced challenges in adoption in Southeast Asia due to high costs, slow installation, and risks. However, they are well-suited for difficult construction sites with restricted access, deep socketing needs, and high loading requirements. Lessons from challenges include reducing labor costs through mechanization, managing risks through equipment monitoring and site preparation, and improving planning to reduce downtime. Modern micropile rigs and techniques have addressed past challenges and made micropiles a cost-effective solution for difficult ground conditions.
Foundation Failure presentation - halabja universityHussein Abbas
This document discusses foundation failure, including signs, causes, and conclusions. Some common signs of foundation failure are cracks in walls/floors, settling or sinking, and doors/windows that don't open properly. Major causes include soil movement from expansive soils, poor construction quality, under-slab plumbing leaks, inadequate soil compaction, transpiration from tree roots, and inadequate drainage around the foundation. Foundations cannot always be fully repaired but some techniques like underpinning can strengthen existing foundations in some cases.
Foundations transmit loads from buildings to the ground below. There are different types including shallow foundations like spread footings and deep foundations like piles. Spread footings support individual columns on isolated slabs while combined footings link two columns. Strap footings connect isolated footings with a beam. Mat foundations are large slabs supporting many columns. Pile foundations transfer loads to deeper soils through friction or bearing. Foundations can fail due to unequal settlement, subsoil moisture movement, lateral pressures, or weathering effects. Proper design and construction seeks to prevent these failures.
This document discusses several special concreting techniques:
- Pumped concrete is concrete that can be pushed through a pipeline and must have a design that prevents blockages.
- Shortcrete or gunite is a mortar or fine concrete pneumatically projected at high velocity, used for thin sections with less formwork.
- Underwater concrete requires special mixes placed via bagging, buckets, tremie pipes, or grouted aggregates to prevent water intrusion.
- Other techniques include pre-packed concrete placed underwater and special considerations for hot/cold weather concreting. Proper mix design and placement methods are essential for successful implementation of special concreting applications.
This document discusses ground freezing as a method for excavation support and groundwater control. It describes how ground freezing works by circulating a refrigerant through pipes to freeze the surrounding soil, improving its strength and impermeability. The key advantages are that frozen ground can support excavations without bracing and acts as an impermeable barrier to groundwater flow. Applications mentioned include using ground freezing for shallow and deep excavations, tunneling, and creating underground cutoff walls.
This document provides information about failures in flexible pavements. It discusses the major types of failures such as fatigue cracking, rutting, and thermal cracking. It then describes different types of failures that can occur in the subgrade, subbase, and base course layers. Finally, it defines and describes common flexible pavement distresses including various types of cracking, deformation, deterioration, and problems associated with seal coats. The distresses and failures are defined in detail.
The document provides information on different types of pile foundations. It discusses various classifications of piles including based on function (end bearing, friction, etc.), material (timber, steel, concrete), and installation method (pre-cast, cast-in-place, driven). It also outlines factors that affect pile type selection such as ground conditions, structure type, cost, and durability. Specific pile foundation types are described like Raymond piles, MacArthur piles, BSP base driven piles, and swage piles.
Vibration method for ground improvement techniqueABHISHEK THAKKAE
This document discusses various ground improvement techniques, including vertical drains, soil nailing, stone columns, vibro compaction, and dynamic compaction. Vertical drains accelerate consolidation by facilitating drainage of pore water through columns of pervious material placed in soil. Soil nailing uses steel tendons drilled and grouted into soil to create a reinforced composite mass. Stone columns form vertical columns of compacted aggregate through problem soils to increase strength and reduce compressibility. Vibro compaction densifies loose sands using vibratory probes to achieve a denser soil structure. Dynamic compaction improves soil by repeatedly dropping heavy weights onto the ground from heights of 40 to 80 feet.
This document discusses modern ground improvement techniques for highways. It introduces various ground improvement methods like vertical drains, soil nailing, stone columns, vibro compaction, dynamic compaction, and vibro piers. Each method is briefly described in terms of the process and materials used to improve weak soils and increase their load bearing capacity. The document emphasizes that ground improvement techniques play a vital role in infrastructure development by reducing construction timelines and costs.
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
The document discusses various ground improvement techniques including dry soil mixing, dynamic compaction, injection systems, rapid impact compaction, rigid inclusions, vibro compaction, vibro concrete columns, vibro piers, and wet soil mixing. It provides details on each technique such as how it is performed, the types of soils it can be used to treat, and examples of how it has been used to improve soil properties like bearing capacity, settlement, and liquefaction potential.
Chapter 6.0 modern foundation tech. & ground improvement DYPCET
Ground improvement techniques are required to enhance the engineering properties of soils that are inadequate for supporting structures. Common issues include soft, collapsible, or swelling soils. Techniques include densification using vibro compaction or dynamic compaction to increase density; reinforcement by installing compaction piles or jet grouting columns; and stabilization through admixtures or electrochemical processes. The appropriate technique depends on the soil type and desired improvement to shear strength, stiffness, or permeability.
This presentation discusses various ground improvement techniques for transportation projects. It introduces vertical drains, soil nailing, stone columns, vibro compaction, and dynamic compaction. Vertical drains like sand drains and wick drains accelerate consolidation by facilitating drainage. Soil nailing reinforces soil by drilling and grouting steel tendons. Stone columns form compacted aggregate columns to increase shear strength and reduce compressibility. Vibro compaction densifies loose sands. Dynamic compaction drops heavy weights to compact soils at depth. The presentation provides details on how each technique is implemented to improve weak soils for construction.
OMS Pile Driving Equipment GmbH. provides a large selection of ground improvement techniques: “vibro compaction”, “vibro replacement” and “vertical drain”. As effective as our products are, choosing the correct equipment for your project might be a challenge. However, our experts on ground engineering can help you to decide on the best equipment for your project.
Today, the social and industrial growth has increased the importance of ground engineering. In fact, the profession plays a crucial role in projects such as power stations or the expansion of infrastructure systems like harbors and airports. Therefore, it is good to consult to an expert before deciding on the method of ground improvement.
METHODS
Deep vibro compaction and vibro replacement methods are mainly to increase the strength of granular soils as well as unfavorable soil conditions. They are also beneficial for the improvement of deformation characteristics of the same type of soil. The two methods work by enhancing the bearing capacity of the weak layer. Then, they utilize the benefit of the improved resistance. Ergo, this results in a transition between deep foundation and soil stabilization. This way, the transition ensures a structural support below or on the improved ground surface both safety and economy wise.
As OMS team, we support our customers by recommending the best soil improvement equipment solutions. Vibro compaction and vibro replacement (stone columns) as well as vertical drain (wick drain) equipment of OMS have proved themselves in the global market from Europe to Middle East, South East Asia and America continent.
VIBRO COMPACTION – TOP FEED GROUND IMPROVEMENT TECHNIQUE
Vibro compaction method is mostly suitable for fine granular soils with seismic risk. For this reason, experts suggest for land reclamation projects to decrease the risk of liquefaction. Furthermore, the technique is useful for the densification of sand-like soils on site through an OMS Vibroflotation prob. Due to the concurrent impact of saturation and vibration, loose sand particles changes into a more compact state. As a result, lateral confining pressure of the sand mass rises.
Vibro compaction top feed technique is convenient for medium to coarse-grained sand with silt content. Cohesive soils with silt and clay does not respond to vibratory compaction.
Vibro Compaction
Tandem Free Hanging Ground Improvement:
The tandem vibro compaction includes two vibroflotation probes. Each prob suspends from the same crane. Land reclamation projects that require 20 – 25 m depth uses this configuration. The quality of compaction/stone column is controllable with a data logger supplied by OMS. Thence, the depth, compaction rate, time-related compaction and withdrawals can be measured and monitored. The data logger is also able to measure the gravel volume.
For further details please click the link below:
https://www.omsvibro.com/ground-improvement-techniques/
There are several techniques for improving the mechanical properties of soil, including densification, reinforcement, and stabilization methods. Densification techniques like vibro-compaction, vibro-flotation, dynamic compaction, and blasting work to compact soil particles into a denser configuration, increasing strength and stiffness. Reinforcement techniques include installing discrete inclusions like compaction piles to reinforce weak soils. Stabilization techniques chemically alter the soil, such as jet grouting which mixes soil with cement grout under high pressure to form columns of treated soil.
1) The document discusses ground improvement techniques of preloading and vertical drainage. Preloading involves applying a surcharge load to improve soil strength and reduce settlements before construction.
2) Vertical drains are often used with preloading to accelerate consolidation by shortening the drainage path. Common types are sand drains and prefabricated vertical drains.
3) Vacuum preloading is described as an alternative to conventional preloading using surcharge loads, applying atmospheric pressure via a membrane system instead. This requires an effective drainage and vacuum maintenance system.
Principles of soil densification – Properties of Compacted soil, Compaction control tests, Specification of compaction requirements, Blasting, Vibrocompaction, Dynamic Tamping and Compaction piles.
The document discusses various soil improvement techniques including vibro-compaction, vibro-replacement stone columns, vacuum consolidation, preloading, heating, ground freezing, mechanically stabilized earth structures, soil nailing, and micro piles. It provides details on the principles, applications, and considerations for each technique.
This document discusses various ground improvement techniques including vibro-flotation, stone columns, micro piles, soil nailing, and grouting. It explains that these techniques are needed to construct structures in unfavorable geotechnical conditions like filled, low-lying, or waste lands by increasing soil strength and reducing compressibility, permeability, and liquefaction potential. Specific techniques are then described in more detail, including field compaction, dynamic compaction, vibro-compaction, vibroflotation, and stone columns.
Micropiles have been used since the 1950s but faced challenges in adoption in Southeast Asia due to high costs, slow installation, and risks. However, they are well-suited for difficult construction sites with restricted access, deep socketing needs, and high loading requirements. Lessons from challenges include reducing labor costs through mechanization, managing risks through equipment monitoring and site preparation, and improving planning to reduce downtime. Modern micropile rigs and techniques have addressed past challenges and made micropiles a cost-effective solution for difficult ground conditions.
Foundation Failure presentation - halabja universityHussein Abbas
This document discusses foundation failure, including signs, causes, and conclusions. Some common signs of foundation failure are cracks in walls/floors, settling or sinking, and doors/windows that don't open properly. Major causes include soil movement from expansive soils, poor construction quality, under-slab plumbing leaks, inadequate soil compaction, transpiration from tree roots, and inadequate drainage around the foundation. Foundations cannot always be fully repaired but some techniques like underpinning can strengthen existing foundations in some cases.
Foundations transmit loads from buildings to the ground below. There are different types including shallow foundations like spread footings and deep foundations like piles. Spread footings support individual columns on isolated slabs while combined footings link two columns. Strap footings connect isolated footings with a beam. Mat foundations are large slabs supporting many columns. Pile foundations transfer loads to deeper soils through friction or bearing. Foundations can fail due to unequal settlement, subsoil moisture movement, lateral pressures, or weathering effects. Proper design and construction seeks to prevent these failures.
This document discusses several special concreting techniques:
- Pumped concrete is concrete that can be pushed through a pipeline and must have a design that prevents blockages.
- Shortcrete or gunite is a mortar or fine concrete pneumatically projected at high velocity, used for thin sections with less formwork.
- Underwater concrete requires special mixes placed via bagging, buckets, tremie pipes, or grouted aggregates to prevent water intrusion.
- Other techniques include pre-packed concrete placed underwater and special considerations for hot/cold weather concreting. Proper mix design and placement methods are essential for successful implementation of special concreting applications.
This document discusses ground freezing as a method for excavation support and groundwater control. It describes how ground freezing works by circulating a refrigerant through pipes to freeze the surrounding soil, improving its strength and impermeability. The key advantages are that frozen ground can support excavations without bracing and acts as an impermeable barrier to groundwater flow. Applications mentioned include using ground freezing for shallow and deep excavations, tunneling, and creating underground cutoff walls.
This document provides information about failures in flexible pavements. It discusses the major types of failures such as fatigue cracking, rutting, and thermal cracking. It then describes different types of failures that can occur in the subgrade, subbase, and base course layers. Finally, it defines and describes common flexible pavement distresses including various types of cracking, deformation, deterioration, and problems associated with seal coats. The distresses and failures are defined in detail.
The document provides information on different types of pile foundations. It discusses various classifications of piles including based on function (end bearing, friction, etc.), material (timber, steel, concrete), and installation method (pre-cast, cast-in-place, driven). It also outlines factors that affect pile type selection such as ground conditions, structure type, cost, and durability. Specific pile foundation types are described like Raymond piles, MacArthur piles, BSP base driven piles, and swage piles.
Vibration method for ground improvement techniqueABHISHEK THAKKAE
This document discusses various ground improvement techniques, including vertical drains, soil nailing, stone columns, vibro compaction, and dynamic compaction. Vertical drains accelerate consolidation by facilitating drainage of pore water through columns of pervious material placed in soil. Soil nailing uses steel tendons drilled and grouted into soil to create a reinforced composite mass. Stone columns form vertical columns of compacted aggregate through problem soils to increase strength and reduce compressibility. Vibro compaction densifies loose sands using vibratory probes to achieve a denser soil structure. Dynamic compaction improves soil by repeatedly dropping heavy weights onto the ground from heights of 40 to 80 feet.
This document discusses modern ground improvement techniques for highways. It introduces various ground improvement methods like vertical drains, soil nailing, stone columns, vibro compaction, dynamic compaction, and vibro piers. Each method is briefly described in terms of the process and materials used to improve weak soils and increase their load bearing capacity. The document emphasizes that ground improvement techniques play a vital role in infrastructure development by reducing construction timelines and costs.
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
The document discusses various ground improvement techniques including dry soil mixing, dynamic compaction, injection systems, rapid impact compaction, rigid inclusions, vibro compaction, vibro concrete columns, vibro piers, and wet soil mixing. It provides details on each technique such as how it is performed, the types of soils it can be used to treat, and examples of how it has been used to improve soil properties like bearing capacity, settlement, and liquefaction potential.
Chapter 6.0 modern foundation tech. & ground improvement DYPCET
Ground improvement techniques are required to enhance the engineering properties of soils that are inadequate for supporting structures. Common issues include soft, collapsible, or swelling soils. Techniques include densification using vibro compaction or dynamic compaction to increase density; reinforcement by installing compaction piles or jet grouting columns; and stabilization through admixtures or electrochemical processes. The appropriate technique depends on the soil type and desired improvement to shear strength, stiffness, or permeability.
This presentation discusses various ground improvement techniques for transportation projects. It introduces vertical drains, soil nailing, stone columns, vibro compaction, and dynamic compaction. Vertical drains like sand drains and wick drains accelerate consolidation by facilitating drainage. Soil nailing reinforces soil by drilling and grouting steel tendons. Stone columns form compacted aggregate columns to increase shear strength and reduce compressibility. Vibro compaction densifies loose sands. Dynamic compaction drops heavy weights to compact soils at depth. The presentation provides details on how each technique is implemented to improve weak soils for construction.
OMS Pile Driving Equipment GmbH. provides a large selection of ground improvement techniques: “vibro compaction”, “vibro replacement” and “vertical drain”. As effective as our products are, choosing the correct equipment for your project might be a challenge. However, our experts on ground engineering can help you to decide on the best equipment for your project.
Today, the social and industrial growth has increased the importance of ground engineering. In fact, the profession plays a crucial role in projects such as power stations or the expansion of infrastructure systems like harbors and airports. Therefore, it is good to consult to an expert before deciding on the method of ground improvement.
METHODS
Deep vibro compaction and vibro replacement methods are mainly to increase the strength of granular soils as well as unfavorable soil conditions. They are also beneficial for the improvement of deformation characteristics of the same type of soil. The two methods work by enhancing the bearing capacity of the weak layer. Then, they utilize the benefit of the improved resistance. Ergo, this results in a transition between deep foundation and soil stabilization. This way, the transition ensures a structural support below or on the improved ground surface both safety and economy wise.
As OMS team, we support our customers by recommending the best soil improvement equipment solutions. Vibro compaction and vibro replacement (stone columns) as well as vertical drain (wick drain) equipment of OMS have proved themselves in the global market from Europe to Middle East, South East Asia and America continent.
VIBRO COMPACTION – TOP FEED GROUND IMPROVEMENT TECHNIQUE
Vibro compaction method is mostly suitable for fine granular soils with seismic risk. For this reason, experts suggest for land reclamation projects to decrease the risk of liquefaction. Furthermore, the technique is useful for the densification of sand-like soils on site through an OMS Vibroflotation prob. Due to the concurrent impact of saturation and vibration, loose sand particles changes into a more compact state. As a result, lateral confining pressure of the sand mass rises.
Vibro compaction top feed technique is convenient for medium to coarse-grained sand with silt content. Cohesive soils with silt and clay does not respond to vibratory compaction.
Vibro Compaction
Tandem Free Hanging Ground Improvement:
The tandem vibro compaction includes two vibroflotation probes. Each prob suspends from the same crane. Land reclamation projects that require 20 – 25 m depth uses this configuration. The quality of compaction/stone column is controllable with a data logger supplied by OMS. Thence, the depth, compaction rate, time-related compaction and withdrawals can be measured and monitored. The data logger is also able to measure the gravel volume.
For further details please click the link below:
https://www.omsvibro.com/ground-improvement-techniques/
There are several techniques for improving the mechanical properties of soil, including densification, reinforcement, and stabilization methods. Densification techniques like vibro-compaction, vibro-flotation, dynamic compaction, and blasting work to compact soil particles into a denser configuration, increasing strength and stiffness. Reinforcement techniques include installing discrete inclusions like compaction piles to reinforce weak soils. Stabilization techniques chemically alter the soil, such as jet grouting which mixes soil with cement grout under high pressure to form columns of treated soil.
1) The document discusses ground improvement techniques of preloading and vertical drainage. Preloading involves applying a surcharge load to improve soil strength and reduce settlements before construction.
2) Vertical drains are often used with preloading to accelerate consolidation by shortening the drainage path. Common types are sand drains and prefabricated vertical drains.
3) Vacuum preloading is described as an alternative to conventional preloading using surcharge loads, applying atmospheric pressure via a membrane system instead. This requires an effective drainage and vacuum maintenance system.
Principles of soil densification – Properties of Compacted soil, Compaction control tests, Specification of compaction requirements, Blasting, Vibrocompaction, Dynamic Tamping and Compaction piles.
The document discusses various soil improvement techniques including vibro-compaction, vibro-replacement stone columns, vacuum consolidation, preloading, heating, ground freezing, mechanically stabilized earth structures, soil nailing, and micro piles. It provides details on the principles, applications, and considerations for each technique.
This document discusses various ground improvement techniques including vibro-flotation, stone columns, micro piles, soil nailing, and grouting. It explains that these techniques are needed to construct structures in unfavorable geotechnical conditions like filled, low-lying, or waste lands by increasing soil strength and reducing compressibility, permeability, and liquefaction potential. Specific techniques are then described in more detail, including field compaction, dynamic compaction, vibro-compaction, vibroflotation, and stone columns.
WELL COMPLETION, WELL INTERVENTION/ STIMULATION, AND WORKOVERAndi Anriansyah
This document discusses various well completion, intervention, and workover topics including:
- Well completion involves preparing the well for production by installing equipment like casing and tubing.
- Open hole and cased hole completions are described, along with advantages and disadvantages of each.
- Well intervention operations like scale removal, acidizing, and sand cleaning are performed during production.
- Formation damage from fluids introduced into the well is also discussed.
- Stimulation techniques like acidizing and hydraulic fracturing aim to increase well productivity. The document outlines the processes, equipment, and evaluation of these operations.
- Other topics covered include intelligent well completions, perforating, sand control, squeeze cement
This document discusses soil liquefaction, including its causes and effects. It defines liquefaction as when a saturated or partially saturated soil loses strength and stiffness in response to stress like earthquakes, behaving like a liquid. Liquefaction can cause extreme property damage and loss of life through failures like lateral spreading. There are different types of liquefaction including flow liquefaction and cyclic mobility. Effects include loss of bearing strength, lateral spreading, settlement and loss of support. Methods to reduce liquefaction risks involve avoiding susceptible soils, building resistant structures, and improving soils through techniques like vibro-compaction, vibro-replacement, deep soil mixing and compaction grouting.
This document discusses ground improvement techniques using grouting methods. It begins by defining grouting as injecting fluid-like materials into soil or rock to increase strength and decrease compressibility and permeability. There are three main aspects of grouting: permeation/penetration where grout freely flows into voids; compaction where grout remains intact and displaces soil; and hydraulic fracturing where grout penetrates fractured zones. The document also discusses grout materials including suspension grouts using cement or soil, emulsion grouts using asphalt, and solution grouts using chemicals. It concludes by comparing one-shot and two-shot grouting systems.
Dewatering is the artificial removal of groundwater or surface water to allow for construction. It plays a vital role in excavation by controlling hydrostatic pressure and soil stability. There are three main dewatering methods: active dewatering uses pumping, interception prevents water from reaching the excavation, and isolation excludes water via cut-off walls. Proper method selection depends on soil type and desired drawdown. Without control, dewatering can cause ground subsidence, flooding, or structural collapse due to increased soil loading.
This document discusses different methods of soil compaction, including laboratory tests, deep compaction techniques, and factors affecting compaction. Standard Proctor and modified Proctor tests are described as common laboratory methods to determine maximum dry density and optimum moisture content of soils. Deep compaction techniques discussed include precompression, explosion, heavy tamping, vibration, and compaction grouting. Precompression involves preloading soil with a surcharge or lowering the water table to induce consolidation over time. Explosion and heavy tamping use impact forces to densify loose soils, while vibration and grouting employ mechanical means like probes or injected grout to compact soils at depth.
Foundation underpinning involves transferring structural loads to deeper, more stable soils or bedrock when the existing foundation is inadequate. It is done by excavating pits under the foundation and installing concrete piers that the foundation is wedged up onto. Helical piers are also used, which are screwed into the ground to support the foundation. Shoring involves installing a structural system like metal or timber to support the sides of an excavation and prevent collapse, and is needed when excavating under an existing foundation, repairing a foundation, or where loose soil or water are present. The main underpinning and shoring methods were discussed.
Soil liquefaction describes a phenomenon where saturated granular soils like silty sands or gravels lose strength during an earthquake and behave like liquid. This makes buildings and structures unstable and prone to tilting or sinking into the ground. Several methods have been developed to evaluate liquefaction susceptibility based on soil type, grain size, and past earthquake damage at a site. Where liquefaction is a risk, mitigation techniques like vibro-compaction, dynamic compaction, and stone columns can be used to densify soils and improve drainage to reduce liquefaction impacts.
Similar to Ground improvement welcome to a new era (20)
1. VIBRO Equipment
& Parts Far East Co.
Innovation & technology within reach
WELCOME TO A NEW ERA
of Engineered
Ground Improvement Solutions
111
www.vibro-equipmentfareast.com
2. Contents
Page 3. Who are we?
Page 4. What do you know about “Vibroflotation”?
Page 5. The reasons behind “Vibroflotation” Page 17. Vibroflot Specifications
Page 6. “Vibroflotation” method Page 18. Which Model & Configuration is Right for You ?
Page 7. What do you know about “Vibro Replacement” ? Page 19. Selection Process & Summary
Page 8. Introduction to Wet Top Feed Page 20. Control, Monitor & Data Acquisition
Page 9. Wet Top Feed Method Page 21. Control, Monitor & Data Acquisition
Page 10. Introduction to Dry Bottom Feed Method Page 22. Control, Monitor & Data Acquisition
Page 11. Dry Bottom Feed Method Page 23. Additional Equipment Required
Page 12. Vibroflot Combinations Page 24. Contact Us
Page 13. AQUABLASTERSTONEFEED™
Page 14. Engineering the Equipment
Page 15. Precision Machining
Page 16. Vibroflot Range
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3. Who are we?
With a vision to fill a niche in the Ground Improvement Industry, offering 2nd to
none equipment, Vibro Equipment & Parts Far East Co. was born.
We are a joint British/German owned and managed company operating from
Subic Bay Freeport Zone, Philippines. We are an internationally focused
company supporting the ground improvement industry.
Our senior management have been in the industry for over 25 years and with
the vast knowledge and experience gained over those years, specializing in all
aspects related to foundation / ground improvement equipment, we have the
focus and technology to provide the industry with an alternative avenue for
solutions to existing and new scenarios.
Specializing in two key areas, Vibroflotation and Vibro Replacement, be it
onshore or offshore, we have the equipment to deal with it .
Photos to the right showing:
Large Scale Compaction – Deira Palm, UAE
Offshore Stone Columns – Doha Port, Qatar
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4. What do you know about “Vibroflotation” ?
“Vibroflotation” is a technique of ground improvement.
For densifying granular soils with less than 10 – 15% silt present.
The process is done ‘in situ’, using an electric or hydraulic driven vibratory unit known as a
Vibroflot.
Under the influence of simultaneous vibration and saturation, loose sand and or gravel particles
are repacked into a denser state and hence the lateral confining pressure within the soil mass is
increased.
As an option, additional extension tubes can be added to allow the Vibroflot to do its work to
depths in excess of 30 meters below surface level.
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5. The reasons behind “Vibroflotation”
Liquefaction ?
Liquefaction is a phenomenon in which the strength and stiffness of a soil
is reduced by earthquakes shaking and/or other rapid loadings.
Liquefaction and related phenomena have been responsible for
tremendous amounts of damage in historical earthquakes around the
world.
Liquefaction occurs in saturated soils. That is, soils in which the space
between individual particles is completely filled with water. This water
exerts a pressure on the soil particles that influences how tightly the
particles themselves are pressed together.
Prior to an earthquake, the water pressure is relatively low. However,
earthquake shaking can cause the water pressure to increase to the point
where the soil particles can readily move with respect to each other.
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6. “Vibroflotation” method
Penetration
With the aid of air and/or water pressure at the nose cone,
to assist with penetration, the Vibroflot is lowered steadily into the ground to
a predetermined design depth. At the same time, the side jets are also working with a air/water mixture to
agitate the sand, remove any fines and assist to form an annular gap
around the Vibroflot. Upon reaching the correct design depth, the
air/water at the nose cone, is either reduced or switched off.
Compaction
Due to induced horizontal forces, the soil particles surrounding the
tip of the Vibroflot are rearranged to a denser state of compaction.
The Vibroflot is raised incrementally as compaction is achieved.
During this compaction phase, either in situ (1) or imported (2) material is pushed into the void around the
Vibroflot. In case only the in situ material is used, the surface or the area being compacted will be lowered.
Completion
Once the compaction process has been completed, the ground is leveled and then a surface compactor is
required to densify the top layer of around 2mtr in depth.
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7. What do you know about “Vibro Replacement” ?
“ Vibro Replacement ” is a product of the Vibroflotation process
This technique is used in soils that do not respond well to vibration alone. (to stiff, more than
15% silt)
The improvement is achieved by creating columns of either crushed stone or concrete (of
which can be reinforced).
The process enables increased load bearing, reduces settlement and even improves the shear
resistance of the ground being treated.
The process is technically proven worldwide and very cost effective
There are two primary construction methods of Vibro Replacement.
a. Wet Top Feed
b. Dry Bottom Feed
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8. Introduction to Wet Top Feed
This is the most commonly used and most cost-efficient of the deep vibratory replacement
methods.
Stone is fed directly from the surface with the aid of a wheeled loader or similar into the void
that has been created by the Vibroflot.
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9. Wet Top Feed Method
Penetration
Assisted by air and/or water jetting as the nose cone, the
Vibroflot penetrates to the required depth under its own
weight. Once the Vibroflot has reached the design depth,
the air and/or water at the nose cone is reduced or switched
off.
Replacement
Crushed stone backfill is fed from the ground surface into
the created void. The horizontal forces of the Vibroflot,
laterally compacts the stone against the surrounding soil.
Completion
This process is repeated up to the designed cut-off level, forming a well compacted, tightly-
interlocked stone column surrounded by compacted soil of enhanced density.
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10. Introduction to Dry Bottom Feed
“Dry Bottom Feed” refers to the process of placing the stone using a skip or other
medium into the receiving hopper which is located at the uppermost part of the
Vibroflot assembly. From there the stone is fed down through a series of stone
feed pipes, which are mounted onto the side of the Vibroflot / follower
tubes and ejected beneath the specially adapted nose cone into the
base of the column.
With this system, no water is used for penetration.
It offers a cleaner and more reliable solution in comparison
with the simpler wet top feed method.
Hence, it is preferred where the environment plays a
critical role in project execution.
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11. Dry Bottom Feed Method
Penetration
When suspended from a standard crawler crane, the
Vibroflot penetrates to the required depth under its own weight.
When mounted on a leader of a suitable base machine the Vibroflot
penetrates to the designed depth with the assistance of a pull down /
crowd winch, thus increasing the efficiency and speeding up the
penetration time. When as an attachment to an excavator the
Vibroflot penetrates to the required depth with the assistance of
the boom.
Replacement
Crushed stone is introduced (with the aid of a skip or other medium)
into the hopper and is fed down the stone supply tubes to the
specially adapted nose cone. The Vibroflot is then lifted a set value
and the stone is discharged to the underside of the nose cone. The
Vibroflot slightly re-penetrates and the horizontal forces of the
Vibroflot laterally compacts the stone against the surrounding soil.
Completion
This process is repeated up to the designed cut-off level, forming a well compacted tightly interlocked
stone column surrounded by compacted soil of enhanced density.
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12. Vibroflot Combinations
Used as an attachment, they can be mounted on to the
mast or leader of any suitable piling rig and when
incorporating an existing pull down / crowd winch, a
complete and effective bottom feed system is obtained
with minimum outlay. Alternatively, our range of
Vibroflots can be simply suspended from a crane or
even mounted onto a suitable excavator.
When in compaction mode they can be used as a single
unit or even in a tandem arrangement to increase
productivity.
Our Electric range of Vibroflots can be connected to
standard generators that are readily available for hire
or purchase worldwide whereas our hydraulic range of
Vibroflots are designed to simply couple up to our Deira Palm Island - UAE
supporting range of Hydraulic Power Packs or even
direct to the hydraulic system of any suitable base crane
or piling rig.
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13. Alternative Stone Feed Systems
AQUABLASTERSTONEFEED®
With a patent pending, we have developed a stone
delivery system that works ideally for off-shore stone columns, but also can be
adapted for dry land when high volumes at a fast rate is a premium. Automated
feed control ensures quality and quantity of each batch being pumped from the
AQUABLASTERSTONEFEED™ station to the head of the Vibroflot assembly.
Outperforms any skip assisted delivery system available on the market.
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14. Engineering the Equipment
Our entire range of Vibroflots and all of the associated
attachments are completely designed and engineered in-house.
Using the latest 3D mechanical CAD (computer-aided design)
software, we are able to combine design, experience and
knowledge to create a vast portfolio of equipment.
Our initial approach brought about a truly 1st to the industry, a
unique and versatile design model that we are proud to share
with clients. The concept was to introduce a complete range of
Vibroflots and all the associated attachments designed,
engineered and constructed in modular formats.
For example, all of our Vibroflots use common eccentric
assemblies and are unique in the fact that the design gives the
option and luxury to be able to simply change the prime mover
from electric to hydraulic or vice versa. Apart from initially saving
huge investment costs, it puts the end user in a perfect position
to offer solutions to cover any job site condition or requirement.
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15. Precision machining
All components are manufactured to a high degree of accuracy ensuring that all sub-
assemblies are interchangeable, thus creating simple to adapt modular main
assemblies. Very easy to change from Hydraulic to Electric and / or Compaction
Mode to Top or Bottom Feed Modes.
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16. Vibroflot Range
Our DV180 series operates with a driven power
output of 180 kW. It is mainly used for stone and
concrete column construction but can be used for
compaction job sites. It can be attached to
suitable piling rigs or free hanging from a crane.
The DV230 series operates with a driven power
output of 230 kW. It is designed to operate for
large deep compaction projects. It can be
suspended from a crane and used as a single unit
or in a tandem arrangement.
The DV300 series is our most powerful of our
range of Vibroflots up to date. It is purposefully
designed for very large sand compaction projects
where wider spacing's enable lower time and
significant cost savings. It can be suspended from
a crane and used as a single unit or in a tandem
arrangement.
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18. Which Model & Configuration
is Right for You ?
As it our policy to make our clients interaction
with us as smooth as possible, we have brought to the industry another new concept – “The
VIBRO CONFIGURATOR”.
Selecting the Model and configuration is now as simple as 1,2,3……..
Just log on to our website www.vibro-equipmentfareast.com and sign up. This allows the user to
enter the back office and to use additional features.
From the Home page From this page,
just “CLICK” here and sign up select “New Inquiry”
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19. Selection Process & Summary
You will now be brought to a series of drop down menu’s
from which you are able to select step by the configuration that suits your requirements.
Once finished with the menu stages as illustrated below, you will be presented with a summary
page of which will be e mailed directly to us. This whole process is done with ease and allows us to
process your enquiry efficiently.
From each drop down
menu “CLICK” to select
Once the selection stages have been completed a unique assembly #
and a summary is brought into view.
This final stage allows you to add a message and e mail it directly to us.
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20. Control, Monitor & Data Acquisition
To compliment our range of Vibroflotation equipment we
have developed in house our own Control, Monitor and Data
Acquisition system.
Control
From a sate of the art touch screen display all aspects of each
operation can be controlled by simply selecting the correct
graphical symbol or command. This unit is mounted inside the
cabin of the base machine.
Monitor
The monitor displays in real time all the necessary information
to ensure that the operator is In full control of each process at
all times.
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21. Control, Monitor & Data Acquisition
Data Acquisition
The data can be transferred to a remote computer using a
USB memory stick, radio link or GPRS.
The recorded data will include but not limited to; Date, point
of reference’s, start, finish & overall time, depth of
penetration, depths of obstructions (if any), etc.
Many different reports can be complied by the site
engineer.
Customization is also a reality to suit clients needs.
Main operating screen for
Wet Top Feed Stone Columns
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22. Control, Monitor & Data Acquisition
All safety and technical parameters
are stored automatically. This
enables a technician to download
the data at any point in time to
support service and maintenance
intervals.
In addition, on special request, we
have a GPS system as an add-on to
offer the complete solution to
productivity.
Main operating screen for
Bottom Feed Stone Columns
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23. Additional Equipment Required
Depending on which application the
Vibroflot/s is/are being used for, auxiliary
equipment may/will be required.
Generally, as an option to purchase, these
can be hired in the local market as and
when needed.
The items of equipment mentioned here
are to be used as a guide line as what could
be required. But for further details please
contact our office and we are ready to
advise.
All of which can be supplied by us as per
the clients request.
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24. Innovation & technology within reach
Contact Us
Vibro Equipment
& Parts Far East Co.
Unit 1, No 78 Aim High Ave,
Gateway Park,
Subic Bay Freeport Zone,
Olongapo City,
Zambales, 2200
Philippines
Tel: +63 (0)47 2502802
Fax: +63 (0)47 2502804
info@vibro-equipmentfareast.com
Name: vibro-equipmentfareast
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