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This document discusses techniques for earthquake resistant building designs. It describes three main techniques: base isolation method, energy dissipation devices (such as seismic dampers), and keeping buildings upright. The base isolation method uses bearing pads with curved surfaces and low-friction materials to allow buildings to slide horizontally and vertically during an earthquake, then return to their original position when shaking stops. Seismic dampers are special devices introduced in buildings to absorb energy from seismic waves. Common types include viscous, friction, and yielding dampers. Keeping buildings upright techniques allow building frames to rock up and down within base fittings to dissipate earthquake energy through the building cores and exteriors.
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Slides Earthquake Resistant Design part2
This document discusses various earthquake design considerations for buildings. It notes that buildings with unequal mass distribution, soft ground floors, or uneven structural elements can twist during shaking. Different buildings respond differently to ground vibrations depending on the period of earthquake waves. Indian design codes like IS 13920 and IS 1893 provide guidelines for ductile reinforcement details. Proper detailing of beams, columns, joints, walls and foundations is necessary to resist seismic forces. Base isolation and damping devices can also help reduce earthquake shaking and damage.
advanced construction technology - seismic isolation & passive-energy dissipa...
Seismic isolation and passive energy dissipation devices are advanced technologies used in housing construction to minimize seismic motion. Seismic isolation structures place quake-absorbing devices like laminated rubber in building foundations to block seismic motions from reaching the building, reducing intensity by up to 80%. Passive energy dissipation devices absorb and dissipate earthquake energy through components like viscous fluid dampers and friction dampers. Reinforced concrete cores running through buildings also increase seismic performance at lower cost. These advanced technologies enhance seismic resistance while reducing potential damage from earthquakes.
Earthquake resistant building technologies
This document discusses various earthquake-resistant building technologies including:
1) Base isolation, which places structures on seismic bearings to isolate them from ground shaking.
2) Dampers like oil, viscous, and friction dampers that absorb seismic energy.
3) Tuned mass dampers and tuned liquid dampers that reduce vibrations through pendulums or liquid-filled tanks tuned to the building's natural frequency.
4) Innovations like yielding dampers, tuned mass dampers in skyscrapers, and "seismic invisibility cloaks" that deflect ground waves around structures.
Earthquake
This document discusses techniques for making buildings earthquake resistant. It covers base isolation, which involves supporting a building on bearing pads to allow flexibility during earthquakes. It also discusses energy dissipation devices like friction dampers, metallic dampers, and viscoelastic dampers that can absorb seismic energy. The document provides details on how each technique works and their advantages, such as reducing displacement and maintaining structural performance during earthquakes. It concludes that base isolation and friction dampers are commonly used techniques for earthquake-resistant construction.
Earthquake resistant construction
This document discusses techniques for earthquake resistance in buildings. It begins by defining earthquakes and their effects. Common techniques for earthquake resistance discussed include shear walls, bracing, dampers, rollers, base isolation, and use of light materials. Frame types used in construction that can resist earthquakes are also examined. Suggestions are provided such as avoiding weak columns, providing thick slabs and cross walls, and using symmetrical building shapes and reinforcement. Popular techniques for earthquake resistant design discussed are base isolation devices and seismic dampers.
Earthquake resistant techniques
This document summarizes earthquake resistant techniques. It discusses conventional methods like strengthening buildings through stiffness and ductility. Advanced methods of base isolation and energy dissipation devices are explained. Case studies on buildings like Torre Mayor and Transamerica Pyramid are provided. Techniques under research like shape memory alloys, mussel fibers, visco-elastic dampers and rubber cloaking are outlined. Seismic zones and codes in India are briefly covered along with references.
Dampers
Dampers are mechanical systems that dissipate earthquake energy by deforming or yielding. They absorb seismic energy, reducing forces on structures and controlling building oscillations. Common types include hydraulic dampers using fluid flow, electro-rheological fluid dampers using variable viscosity fluids, metallic dampers using hysteretic behavior of metals, steel dampers using frame deformation, and friction dampers using clamped friction surfaces. Shape memory alloys also dissipate energy through large strain recovery without damage. Dampers direct earthquake energy to dissipating devices within structures, transforming mechanical energy into heat.
Earthquake Resistant Designs
The document discusses the structure of the Earth and the causes of earthquakes. It describes the three main layers of the Earth - crust, mantle, and core. It explains that earthquakes are caused by the movement of tectonic plates at divergent, convergent, and transform plate boundaries. The document also summarizes methods of earthquake-resistant design, including base isolation devices that separate buildings from the ground and seismic dampers that absorb seismic energy. It notes that while base isolation can be used for existing structures, seismic dampers are more expensive to install. The conclusion emphasizes the importance of earthquake-resistant construction and quality control to ensure public safety.
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Slides Earthquake Resistant Design part2
This document discusses various earthquake design considerations for buildings. It notes that buildings with unequal mass distribution, soft ground floors, or uneven structural elements can twist during shaking. Different buildings respond differently to ground vibrations depending on the period of earthquake waves. Indian design codes like IS 13920 and IS 1893 provide guidelines for ductile reinforcement details. Proper detailing of beams, columns, joints, walls and foundations is necessary to resist seismic forces. Base isolation and damping devices can also help reduce earthquake shaking and damage.
advanced construction technology - seismic isolation & passive-energy dissipa...
Seismic isolation and passive energy dissipation devices are advanced technologies used in housing construction to minimize seismic motion. Seismic isolation structures place quake-absorbing devices like laminated rubber in building foundations to block seismic motions from reaching the building, reducing intensity by up to 80%. Passive energy dissipation devices absorb and dissipate earthquake energy through components like viscous fluid dampers and friction dampers. Reinforced concrete cores running through buildings also increase seismic performance at lower cost. These advanced technologies enhance seismic resistance while reducing potential damage from earthquakes.
Earthquake resistant building technologies
This document discusses various earthquake-resistant building technologies including:
1) Base isolation, which places structures on seismic bearings to isolate them from ground shaking.
2) Dampers like oil, viscous, and friction dampers that absorb seismic energy.
3) Tuned mass dampers and tuned liquid dampers that reduce vibrations through pendulums or liquid-filled tanks tuned to the building's natural frequency.
4) Innovations like yielding dampers, tuned mass dampers in skyscrapers, and "seismic invisibility cloaks" that deflect ground waves around structures.
Earthquake
This document discusses techniques for making buildings earthquake resistant. It covers base isolation, which involves supporting a building on bearing pads to allow flexibility during earthquakes. It also discusses energy dissipation devices like friction dampers, metallic dampers, and viscoelastic dampers that can absorb seismic energy. The document provides details on how each technique works and their advantages, such as reducing displacement and maintaining structural performance during earthquakes. It concludes that base isolation and friction dampers are commonly used techniques for earthquake-resistant construction.
Earthquake resistant construction
This document discusses techniques for earthquake resistance in buildings. It begins by defining earthquakes and their effects. Common techniques for earthquake resistance discussed include shear walls, bracing, dampers, rollers, base isolation, and use of light materials. Frame types used in construction that can resist earthquakes are also examined. Suggestions are provided such as avoiding weak columns, providing thick slabs and cross walls, and using symmetrical building shapes and reinforcement. Popular techniques for earthquake resistant design discussed are base isolation devices and seismic dampers.
Earthquake resistant techniques
This document summarizes earthquake resistant techniques. It discusses conventional methods like strengthening buildings through stiffness and ductility. Advanced methods of base isolation and energy dissipation devices are explained. Case studies on buildings like Torre Mayor and Transamerica Pyramid are provided. Techniques under research like shape memory alloys, mussel fibers, visco-elastic dampers and rubber cloaking are outlined. Seismic zones and codes in India are briefly covered along with references.
Dampers
Dampers are mechanical systems that dissipate earthquake energy by deforming or yielding. They absorb seismic energy, reducing forces on structures and controlling building oscillations. Common types include hydraulic dampers using fluid flow, electro-rheological fluid dampers using variable viscosity fluids, metallic dampers using hysteretic behavior of metals, steel dampers using frame deformation, and friction dampers using clamped friction surfaces. Shape memory alloys also dissipate energy through large strain recovery without damage. Dampers direct earthquake energy to dissipating devices within structures, transforming mechanical energy into heat.
Earthquake Resistant Designs
The document discusses the structure of the Earth and the causes of earthquakes. It describes the three main layers of the Earth - crust, mantle, and core. It explains that earthquakes are caused by the movement of tectonic plates at divergent, convergent, and transform plate boundaries. The document also summarizes methods of earthquake-resistant design, including base isolation devices that separate buildings from the ground and seismic dampers that absorb seismic energy. It notes that while base isolation can be used for existing structures, seismic dampers are more expensive to install. The conclusion emphasizes the importance of earthquake-resistant construction and quality control to ensure public safety.
structure control system
This document discusses structure control systems used to protect structures from vibrations during earthquakes or strong winds. It describes traditional seismic design approaches and modern structural control methods. Structural control systems can be passive, active, semi-active, or hybrid. Passive systems like base isolation and dampers dissipate energy without external power. Active systems precisely control structural response using external actuation, while semi-active systems adjust properties using small power inputs. The document provides examples of different control devices and their operating principles.
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Basic points on earthquake resistant building
- Design considerations and different techniques employed to resist building from collapse during earthquake
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This slide helpful to know the applications of Visco-elastic material and their uses in Building structure.
Base isolation topic as per jntu syllabus for m.tech 1st year structures
Base isolation is a seismic protection system that places flexible bearings between a structure and its foundation. During an earthquake, the bearings allow the structure to move independently from the shaking ground, isolating it from seismic forces. Common base isolation bearings include elastomeric bearings and lead-rubber bearings, which are stiff vertically but flexible horizontally. Base isolation is effective because it lengthens a structure's period of vibration, reducing the accelerations and forces experienced, and protects both the structure and its contents from earthquake damage.
Earthquake protection of buildings by seismic isolation
During the devastating February 2011 Christchurch earthquake, the iconic art gallery suffered damage and ground settlement. Triple Pendulum isolators were added at the basement level as part of the building’s repair and strengthening plan. The isolators increase the building’s seismic resilience and protect the precious art collections.
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earthquake resistant ppt
The document discusses earthquake resistant building design techniques. It begins by defining earthquakes and explaining seismology, the study of seismic waves. It then discusses different types of ground shaking caused by earthquakes like shaking, landslides, and liquefaction. It introduces earthquake zones and describes earthquake resistant design as designing buildings to resist seismic forces. Popular techniques discussed include shear walls, bracing, seismic dampers, isolation, bands, and rollers. Specific techniques like shear walls, bracing, dampers, base isolation, horizontal bands, and expansion joints are explained. Suggestions for earthquake resistant design and construction are provided.
Principles of Earthquake resistant design of Structures
This document discusses principles of earthquake-resistant building design and structural vibration control technologies. It explains that earthquake-resistant structures are designed to withstand expected earthquakes while minimizing loss of life and damage. This is achieved through methods ranging from ensuring adequate structural strength and ductility to using base isolation and vibration control systems. Base isolation allows a building to survive seismic impacts by installing flexible isolators between the structure and its foundation. Passive systems require no external power while active systems counterbalance earthquake forces using computer-controlled dampers. Hybrid systems combine aspects of passive and active control for reduced costs.
Earthquake Resisting Structure Techniques
This document discusses techniques for making structures resistant to earthquakes, including base isolation and energy dissipation devices. Base isolation involves separating the building from the ground using flexible rubber devices to allow it to move independently during an earthquake. Energy dissipation devices, like seismic dampers, absorb seismic energy to dampen the motion of the building. Common types of base isolators are lead rubber bearings and spherical sliding isolators, while common seismic dampers include viscous, friction, and yielding dampers. Proper seismic design involves principles like avoiding brittle elements, providing strength throughout the building, and well-connecting the building to its foundation.
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this presentation is about how you can make a building more resistant to earthquakes. Different techniques and designs are discussed to make a building more resistant to earthquakes. examples of different earthquake resistant buildings are also discussed.
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This document summarizes techniques for earthquake resistant building construction. It discusses how earthquake resistant buildings differ from traditional buildings in their design. Some techniques discussed include using reinforced hollow concrete block masonry, which uses reinforced blocks as load-bearing walls and shear walls. Mid-level isolation is described as installing base isolation systems on intermediate floors of existing buildings. Slurry infiltrated mat concrete is presented as a new type of concrete being developed to prevent building collapse. Traditional earthquake resistant housing styles from various regions of India are also overviewed.
Earthquake and earthquake resistant design
This document discusses various earthquake-resistant features used in building design including:
1) Using beams as ductile weak links rather than columns through strong-column weak-beam design.
2) Improving masonry wall behavior by controlling wall dimensions and heights, ensuring proper construction and bonding, and adding horizontal reinforcement.
3) Using shear walls in reinforced concrete buildings to provide strength and stiffness throughout the building height.
Structural control systems
This document discusses structural control systems for improving the seismic performance of buildings. It begins by providing an example of a parking garage that collapsed during an earthquake due to insufficient reinforcement to accommodate large deformations. Next, it compares the dynamic forces from seismic and wind events. For earthquakes, the loading and response are truly dynamic, while wind is more static. Modern structural control systems aim to dissipate energy through passive, active, semi-active or hybrid methods. Passive methods discussed include base isolation using elastomeric bearings and viscous fluid, visco-elastic, friction and metallic dampers. The document emphasizes that structural control systems improve dynamic performance by increasing energy absorption or dissipation.
DESIGN AND ANALYSIS OF EARTH-QUAKE RESISTANT FOR MULTI-STORIED BUILDING ON A ...
his project named as “DESIGN OF EARTH-QUAKE RESISTANT MULTI-STORIED RCC BUILDING ON A SLOPING
GROUND” involves the analysis of simple 2-D frames of varying floor heights and varying no of bays using a very popular
software tool STAAD Pro. Using the analysis results various graphs were drawn between the maximum axial force,
maximum shear force, maximum bending moment, maximum tensile force and maximum compressive stress being
developed for the frames on plane ground and sloping ground. The graphs used to drawn comparison between the two
cases and the detailed study of “SHORT COLOUMN EFFECT” failure was carried up. In addition to that the detailed
study of seismology was undertaken and the feasibility of the software tool to be used was also checked. Till date many
such projects have been undertaken on this very topic but the analysis were generally done for the static loads i.e. dead
load, live load etc, but to this the earthquake analysis or seismic analysis is to be incorporated. To create a technical
knowhow, two similar categories of structures were analyzed, first on plane ground and another on a sloping ground.
Then the results were compared. At last the a structure would be analyzed and designed on sloping ground for all possible
load combinations pertaining to IS 456, IS 1893 and IS 13920 manually.
Earthquake resistant building construction
1 INTRODUCTION
2 EARTHQUAKE THEORY
3 EARTHQUAKE MAGNITUDE AND ENERGY
4 EFFECTS OF EARTHQUAKES
5 MAJOR EARTHQUAKES
6 NOTABLE EARTHQUAKES AND THEIR ESTIMATED
MAGNITUDE
7 HOW EARTHQUAKE RESISTANT CONSTRUCTION IS
DIFFERENT
8 SEISMIC DESIGN PHILOSOPHY
9 EFFECT OF EARTHQUAKE ON REINFORCED CONCRETE BUILDINGS
10 ROLES OF FLOOR AND MASONRY WALLS SLABS
11 STRENGTH HIERARCHY
12 EARTHQUAKE RESISTANT BUILDING
13 EARTHQUAKE DESIGN PHILOSOPHY
14 REMEDIAL MEASURES TO MINIMISE THE LOSSES DUE TO EARTHQUAKES
15 EARTHQUAKE RESISTANT BUILDING CONSTRUCTION WITH REINFORCED HOLLOW CONCRETE BLOCK(RHCBM)
16 STRUCTURAL FEATURES
17 STRUCTURAL ADVANTAGES
18 CONSTRUCTIONAL ADVANTAGES
19 ARCHITECTURAL AND OTHER ADVANTAGES
20 STUDIES ON THE COMPARATIVE COST ECONOMICS OF RHCBM
21 MID-LEVEL ISOLATION 32-34
22 EARTHQUAKE RESISTANCE BUILDING USING SEISMIC ISOLATION SYSTEMS WITH SLIDING ON CONCAVE SURFACE
23 DESCRIPTION
24 CONCEPT OF FRICTION PENDULUM BEARING
25 SLIDING PENDULUM SEISMIC ISOLATION SYSTEM
26 BACKGROUND OF THE INVENTION
27 BRIEF SUMMARY OF THE INVENTION
28 DETAILED DESCRIPTION OF THE INVENTION
29 ESTIMATION
30 CONCLUSION
31 BIBLIOGRAPHY
Base isolation Engineering
This document discusses base isolation as a seismic protection system for buildings. It defines base isolation as reducing the interaction between a structure and the ground by incorporating seismic isolation at the base. It describes the principles of base isolation, including allowing the ground to move without transmitting motions to the structure. It also outlines different isolation components like elastomeric isolators and sliding isolators. Examples of base isolation being used in real buildings in India are provided. The document concludes that base isolation is a reliable earthquake resistant design method when properly planned and developed isolation systems are used.
Base isolation
Base isolation is one of the most widely accepted seismic protection systems in earthquake prone areas. It mitigates the effect of an earthquake by essentially isolating the structure from potentially dangerous ground motions, especially in frequency range where building is mostly affected. This includes
Concept of Base Isolation
Principle of Base Isolation
Comparison of Fixed Base Structure and Isolated Base Structure
Types of Isolation Components
Base Isolation in Real Buildings
Applications of Base Isolation
Base isolation earthquake resistance wooden house
Base isolation is a seismic protection system that isolates structures from potentially dangerous ground motions during an earthquake. It works by incorporating seismic isolation devices, such as elastomeric bearings or springs, between the structure's foundation and subsoil. This allows the structure to move independently and reduces the transfer of seismic forces. The decoupling improves the structure's flexibility and response during an earthquake. Some advantages of base isolation include reduced seismic demand, lower structural costs, decreased displacements, improved safety, and reduced damage. It has been successfully used in several buildings in India, including hospitals. A case study examines using base isolation with springs and steel to seismic-proof a wooden house model.
Earthquake resistant buildings in india
This document discusses techniques for building earthquake resistant structures in India. It covers various sources of earthquakes and methods to resist seismic activity, including both active and passive systems. Some specific techniques mentioned are shear walls, bracing, dampers, isolation, and using light-weight materials. Suggestions are provided such as avoiding weak column designs, including thick slabs and cross walls, and following building codes.
earthquake resistant design
1. Structures in Kobe built since 1981 that were designed to strict seismic codes mostly withstood the 1995 Kobe earthquake, while newly built ductile-frame high-rise buildings were generally undamaged.
2. Modern earthquake engineering aims to create earthquake-resistant designs and construction techniques to build all types of structures, using state-of-the-art technology, materials science, and testing.
3. Key strategies for earthquake-resistant design include base isolation, increasing damping, and using devices like viscous and friction dampers to absorb seismic energy.
Buildings with Base Isolation Techniques
The document discusses buildings with base isolation techniques. It provides an overview of base isolation, including definitions of earthquakes, structural bearings, design requirements, and construction of base isolated buildings. It also presents a case study comparing the behavior of a fixed base building to a building with a base isolation system, using finite element modeling and modal analysis. The base isolated building showed significantly lower and longer period modal frequencies, indicating better seismic performance.
Base isolation of structures
The document discusses base isolation as an earthquake protection system. It begins with an introduction to earthquakes and then defines base isolation as a system that uses flexible interfaces between a structure and its foundation to decouple the structure from ground motions during an earthquake. It describes various types of base isolation systems, including sliding and elastomeric bearing systems, and discusses considerations for implementing base isolation for structures. It provides an example of base isolation being used in a new hospital built after the collapse of a hospital during an earthquake in India.
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This document discusses structure control systems used to protect structures from vibrations during earthquakes or strong winds. It describes traditional seismic design approaches and modern structural control methods. Structural control systems can be passive, active, semi-active, or hybrid. Passive systems like base isolation and dampers dissipate energy without external power. Active systems precisely control structural response using external actuation, while semi-active systems adjust properties using small power inputs. The document provides examples of different control devices and their operating principles.
Earthquake Resistant Building
Basic points on earthquake resistant building
- Design considerations and different techniques employed to resist building from collapse during earthquake
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This slide helpful to know the applications of Visco-elastic material and their uses in Building structure.
Base isolation topic as per jntu syllabus for m.tech 1st year structures
Base isolation is a seismic protection system that places flexible bearings between a structure and its foundation. During an earthquake, the bearings allow the structure to move independently from the shaking ground, isolating it from seismic forces. Common base isolation bearings include elastomeric bearings and lead-rubber bearings, which are stiff vertically but flexible horizontally. Base isolation is effective because it lengthens a structure's period of vibration, reducing the accelerations and forces experienced, and protects both the structure and its contents from earthquake damage.
Earthquake protection of buildings by seismic isolation
During the devastating February 2011 Christchurch earthquake, the iconic art gallery suffered damage and ground settlement. Triple Pendulum isolators were added at the basement level as part of the building’s repair and strengthening plan. The isolators increase the building’s seismic resilience and protect the precious art collections.
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The document discusses earthquake resistant building design techniques. It begins by defining earthquakes and explaining seismology, the study of seismic waves. It then discusses different types of ground shaking caused by earthquakes like shaking, landslides, and liquefaction. It introduces earthquake zones and describes earthquake resistant design as designing buildings to resist seismic forces. Popular techniques discussed include shear walls, bracing, seismic dampers, isolation, bands, and rollers. Specific techniques like shear walls, bracing, dampers, base isolation, horizontal bands, and expansion joints are explained. Suggestions for earthquake resistant design and construction are provided.
Principles of Earthquake resistant design of Structures
This document discusses principles of earthquake-resistant building design and structural vibration control technologies. It explains that earthquake-resistant structures are designed to withstand expected earthquakes while minimizing loss of life and damage. This is achieved through methods ranging from ensuring adequate structural strength and ductility to using base isolation and vibration control systems. Base isolation allows a building to survive seismic impacts by installing flexible isolators between the structure and its foundation. Passive systems require no external power while active systems counterbalance earthquake forces using computer-controlled dampers. Hybrid systems combine aspects of passive and active control for reduced costs.
Earthquake Resisting Structure Techniques
This document discusses techniques for making structures resistant to earthquakes, including base isolation and energy dissipation devices. Base isolation involves separating the building from the ground using flexible rubber devices to allow it to move independently during an earthquake. Energy dissipation devices, like seismic dampers, absorb seismic energy to dampen the motion of the building. Common types of base isolators are lead rubber bearings and spherical sliding isolators, while common seismic dampers include viscous, friction, and yielding dampers. Proper seismic design involves principles like avoiding brittle elements, providing strength throughout the building, and well-connecting the building to its foundation.
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This presentation consists of information about earthquake and techniques used in the low cost earthquake resistant structures. There is complete description about the earthquake as well as the techniques related to the eq resistant techniques
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this presentation is about how you can make a building more resistant to earthquakes. Different techniques and designs are discussed to make a building more resistant to earthquakes. examples of different earthquake resistant buildings are also discussed.
Earthquake resistent building construction ppt
This document summarizes techniques for earthquake resistant building construction. It discusses how earthquake resistant buildings differ from traditional buildings in their design. Some techniques discussed include using reinforced hollow concrete block masonry, which uses reinforced blocks as load-bearing walls and shear walls. Mid-level isolation is described as installing base isolation systems on intermediate floors of existing buildings. Slurry infiltrated mat concrete is presented as a new type of concrete being developed to prevent building collapse. Traditional earthquake resistant housing styles from various regions of India are also overviewed.
Earthquake and earthquake resistant design
This document discusses various earthquake-resistant features used in building design including:
1) Using beams as ductile weak links rather than columns through strong-column weak-beam design.
2) Improving masonry wall behavior by controlling wall dimensions and heights, ensuring proper construction and bonding, and adding horizontal reinforcement.
3) Using shear walls in reinforced concrete buildings to provide strength and stiffness throughout the building height.
Structural control systems
This document discusses structural control systems for improving the seismic performance of buildings. It begins by providing an example of a parking garage that collapsed during an earthquake due to insufficient reinforcement to accommodate large deformations. Next, it compares the dynamic forces from seismic and wind events. For earthquakes, the loading and response are truly dynamic, while wind is more static. Modern structural control systems aim to dissipate energy through passive, active, semi-active or hybrid methods. Passive methods discussed include base isolation using elastomeric bearings and viscous fluid, visco-elastic, friction and metallic dampers. The document emphasizes that structural control systems improve dynamic performance by increasing energy absorption or dissipation.
DESIGN AND ANALYSIS OF EARTH-QUAKE RESISTANT FOR MULTI-STORIED BUILDING ON A ...
his project named as “DESIGN OF EARTH-QUAKE RESISTANT MULTI-STORIED RCC BUILDING ON A SLOPING
GROUND” involves the analysis of simple 2-D frames of varying floor heights and varying no of bays using a very popular
software tool STAAD Pro. Using the analysis results various graphs were drawn between the maximum axial force,
maximum shear force, maximum bending moment, maximum tensile force and maximum compressive stress being
developed for the frames on plane ground and sloping ground. The graphs used to drawn comparison between the two
cases and the detailed study of “SHORT COLOUMN EFFECT” failure was carried up. In addition to that the detailed
study of seismology was undertaken and the feasibility of the software tool to be used was also checked. Till date many
such projects have been undertaken on this very topic but the analysis were generally done for the static loads i.e. dead
load, live load etc, but to this the earthquake analysis or seismic analysis is to be incorporated. To create a technical
knowhow, two similar categories of structures were analyzed, first on plane ground and another on a sloping ground.
Then the results were compared. At last the a structure would be analyzed and designed on sloping ground for all possible
load combinations pertaining to IS 456, IS 1893 and IS 13920 manually.
Earthquake resistant building construction
1 INTRODUCTION
2 EARTHQUAKE THEORY
3 EARTHQUAKE MAGNITUDE AND ENERGY
4 EFFECTS OF EARTHQUAKES
5 MAJOR EARTHQUAKES
6 NOTABLE EARTHQUAKES AND THEIR ESTIMATED
MAGNITUDE
7 HOW EARTHQUAKE RESISTANT CONSTRUCTION IS
DIFFERENT
8 SEISMIC DESIGN PHILOSOPHY
9 EFFECT OF EARTHQUAKE ON REINFORCED CONCRETE BUILDINGS
10 ROLES OF FLOOR AND MASONRY WALLS SLABS
11 STRENGTH HIERARCHY
12 EARTHQUAKE RESISTANT BUILDING
13 EARTHQUAKE DESIGN PHILOSOPHY
14 REMEDIAL MEASURES TO MINIMISE THE LOSSES DUE TO EARTHQUAKES
15 EARTHQUAKE RESISTANT BUILDING CONSTRUCTION WITH REINFORCED HOLLOW CONCRETE BLOCK(RHCBM)
16 STRUCTURAL FEATURES
17 STRUCTURAL ADVANTAGES
18 CONSTRUCTIONAL ADVANTAGES
19 ARCHITECTURAL AND OTHER ADVANTAGES
20 STUDIES ON THE COMPARATIVE COST ECONOMICS OF RHCBM
21 MID-LEVEL ISOLATION 32-34
22 EARTHQUAKE RESISTANCE BUILDING USING SEISMIC ISOLATION SYSTEMS WITH SLIDING ON CONCAVE SURFACE
23 DESCRIPTION
24 CONCEPT OF FRICTION PENDULUM BEARING
25 SLIDING PENDULUM SEISMIC ISOLATION SYSTEM
26 BACKGROUND OF THE INVENTION
27 BRIEF SUMMARY OF THE INVENTION
28 DETAILED DESCRIPTION OF THE INVENTION
29 ESTIMATION
30 CONCLUSION
31 BIBLIOGRAPHY
Base isolation Engineering
This document discusses base isolation as a seismic protection system for buildings. It defines base isolation as reducing the interaction between a structure and the ground by incorporating seismic isolation at the base. It describes the principles of base isolation, including allowing the ground to move without transmitting motions to the structure. It also outlines different isolation components like elastomeric isolators and sliding isolators. Examples of base isolation being used in real buildings in India are provided. The document concludes that base isolation is a reliable earthquake resistant design method when properly planned and developed isolation systems are used.
Base isolation
Base isolation is one of the most widely accepted seismic protection systems in earthquake prone areas. It mitigates the effect of an earthquake by essentially isolating the structure from potentially dangerous ground motions, especially in frequency range where building is mostly affected. This includes
Concept of Base Isolation
Principle of Base Isolation
Comparison of Fixed Base Structure and Isolated Base Structure
Types of Isolation Components
Base Isolation in Real Buildings
Applications of Base Isolation
Base isolation earthquake resistance wooden house
Base isolation is a seismic protection system that isolates structures from potentially dangerous ground motions during an earthquake. It works by incorporating seismic isolation devices, such as elastomeric bearings or springs, between the structure's foundation and subsoil. This allows the structure to move independently and reduces the transfer of seismic forces. The decoupling improves the structure's flexibility and response during an earthquake. Some advantages of base isolation include reduced seismic demand, lower structural costs, decreased displacements, improved safety, and reduced damage. It has been successfully used in several buildings in India, including hospitals. A case study examines using base isolation with springs and steel to seismic-proof a wooden house model.
Earthquake resistant buildings in india
This document discusses techniques for building earthquake resistant structures in India. It covers various sources of earthquakes and methods to resist seismic activity, including both active and passive systems. Some specific techniques mentioned are shear walls, bracing, dampers, isolation, and using light-weight materials. Suggestions are provided such as avoiding weak column designs, including thick slabs and cross walls, and following building codes.
earthquake resistant design
1. Structures in Kobe built since 1981 that were designed to strict seismic codes mostly withstood the 1995 Kobe earthquake, while newly built ductile-frame high-rise buildings were generally undamaged.
2. Modern earthquake engineering aims to create earthquake-resistant designs and construction techniques to build all types of structures, using state-of-the-art technology, materials science, and testing.
3. Key strategies for earthquake-resistant design include base isolation, increasing damping, and using devices like viscous and friction dampers to absorb seismic energy.
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The document discusses buildings with base isolation techniques. It provides an overview of base isolation, including definitions of earthquakes, structural bearings, design requirements, and construction of base isolated buildings. It also presents a case study comparing the behavior of a fixed base building to a building with a base isolation system, using finite element modeling and modal analysis. The base isolated building showed significantly lower and longer period modal frequencies, indicating better seismic performance.
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The document discusses base isolation as an earthquake protection system. It begins with an introduction to earthquakes and then defines base isolation as a system that uses flexible interfaces between a structure and its foundation to decouple the structure from ground motions during an earthquake. It describes various types of base isolation systems, including sliding and elastomeric bearing systems, and discusses considerations for implementing base isolation for structures. It provides an example of base isolation being used in a new hospital built after the collapse of a hospital during an earthquake in India.
Seismic Retrofitting Techniques
Seminar Presentation on the basics of seismic retrofit to prevent structural damage to buildings, bridges, etc. from earthquake and wind loads.
4326
This document is the Indian Standard code for earthquake resistant design and construction of buildings. It provides guidelines for selecting materials and special construction features to improve earthquake resistance. Some key points:
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Ashutosh ppt
- 1. By Ashutosh kumar Roll no. 15CE64R08 IIT kharagpur 1
- 2. Earthquake resistant designs Design - but it is analysis of forces - buildings due to loads acting on it. If a building is enough to resist the earthquake, then such building is called Earthquake resistant structure. Such design is called Earthquake resistant designs 2
- 3. Earthquake Resisting Structures Techniques: 3 BASE ISOLATION METHOD ENERGY DISSIPATION DEVICE -(Seismic Dampers) KEEPING BUILDING UP THRUST
- 4. Introduction of Resistant techniques Thought - Base Isolation Devices - separate building from ground by some rubber devices. Seismic dampers - special devices - introduced in building - absorb the energy - produced by seismic waves. 4
- 6. It uses bearing pads that have a curved surface and low- friction materials similar to teflon. During an earthquake the building is free to slide both horizontally and vertically. It will return to its original position after the ground shakeing stops. 6 6
- 8. Dampers are of: Viscous Damper Friction Damper Yielding Damper
- 10. 10
- 11. Keeping Building Up thrust When the quake strikes the system dissipates energy in the building cores and exteriors. The frames are free to rock up and down within fittings fixed at their bases. 11
- 12. American Journal of Engineering Research volume- 02. Issue-12, PP-258-268 www.ajer.org . International Journal of Research in Engineering and technology (IMPACT: IJRET) Vol.3, Issue 12, Dec. 2015. 12 References:
- 13. 13
- 14. THANK YOU…14