The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Theoretical work submitted to the Journal should be original in its motivation or modeling structure. Empirical analysis should be based on a theoretical framework and should be capable of replication. It is expected that all materials required for replication (including computer programs and data sets) should be available upon request to the authors.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Theoretical work submitted to the Journal should be original in its motivation or modeling structure. Empirical analysis should be based on a theoretical framework and should be capable of replication. It is expected that all materials required for replication (including computer programs and data sets) should be available upon request to the authors.
Seismic analysis of high damping rubber bearings for base isolationeSAT Journals
Abstract
Base isolation is a mechanism that provides earthquake resistance to the new structure. The base isolation system decouples the building from the horizontal ground motion induced by earthquake, and offers very stiff vertical components to the base level of the superstructure in connection to substructure (foundation). It shifts the fundamental lateral period, dissipates the energy in damping, and reduces the amount of the lateral forces that transferred to the building, inter-story drift, and the floor acceleration.
The work deals with modelling and finite element analysis of a high damping rubber bearing in ANSYS 12.0. A displacement controlled transient analysis was done to analyse the behaviour of the isolator during earthquakes.
Keywords: Base isolation, High damping rubber, Transient analysis
Study on laminated rubber bearing base isolators for seismic protection of st...eSAT Journals
Abstract
Base isolation or seismic base isolation is an effective means for protection of structures, its contents and its occupants during the event of an earthquake. The principle of base isolation is vibration isolation. It decouples the building from damaging action of the earthquake. The isolator partially reflects and partially absorbs input seismic energy before it gets transmitted to the superstructure. Laminated Rubber Bearing Isolators are placed between the superstructure and foundation, which reduces the horizontal stiffness of the system. It thereby increases the time period of the structure and decreases the spectral acceleration of the structure. The superstructure acts like a rigid body, thus inter storey drift is reduced. Such type of isolators are used in practice in India, yet a proper design procedure based on IS code is unavailable. The paper presents design procedure for LRB adopting the procedure of IS 1893:2002 (Part-1) for earthquake resistant design of buildings. Design charts have been developed and presented in this paper which gives isolator diameter and rubber thickness as design outputs. The design procedure requires different input parameters like fundamental period and damping of the fixed base structure, axial load on the column, seismic zone, type of soil and shore hardness of rubber. These design charts enable the designer to easily arrive at the isolator parameters to achieve seismic isolation. Using the charts, case study has been done using SAP2000. Building displacement and acceleration are compared for model with and without base isolator. Comparative study of linear and non-linear base isolators has also been carried out. Linear and non-linear time history analysis has been done using El Centro earthquake.
Keywords: base isolation, laminated rubber bearing, IS Code, seismic protection, design charts, time history analysis, SAP2000
A study on the performance of circular footing embedded in geogrid reinforced...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Base Isolation of Building Frames- Experimental Study Using Shake Table.onkar solshe
We have tried to give a detailed study of the behaviour of the buildings provided with base isolation , doing it experimentally on the SHAKE TABLE and also validating the results using Etabs software.
SEISMIC RESPONSE OF UNSYMMETRIC BUILDING WITH OPTIMALLY PLACED FRICTION DAMPERSIAEME Publication
Conventional methods of seismic rehabilitation with concrete shear walls or steel bracing
are not considered suitable for some buildings as upgrades with these methods would have
required expensive and time consuming foundation work. Supplemental damping in
conjunction with appropriate stiffness offers an innovative and attractive solution for the
seismic rehabilitation of such structures. This paper deals with the use of friction damper as a
passive dissipative device in order to seismic retrofit of existing structures and discusses the
optimal placement criteria. To fulfill this objective, six storey and ten storey L-shaped
buildings have been modeled with five different damper location formats in SAP2000 subjected
to El Centro and Utterkashi earthquake records. Non-Linear Modal Time History Method has
been used for the analysis and base shear, joint displacement, member forces and hysteresis
energy has been compared to find out most optimal damper location format.
Flexural behaviour of rc beams using foundry sand as partial replacement of f...eSAT Journals
Abstract
The main objective of the study of this work is to re-use the used foundry sand (produced at foundry industries) as a partial replacement to fine aggregate in different percentages (15 to 50%) that can be adopted in concrete along with normal river sand designed to meet the requirements of concrete of grade M50, using foundry sand with OPC have been considered in the study. Though, the main investigation is to be carried out is on the flexural behavior of reinforced foundry sand concrete beams, to facilitate proportioning of foundry sand concrete, compressive strength studies are also carried out. The tests to be carried out on around (18) singly reinforced beams of size 150 mm x 250 mm & overall length 2000 mm, simply supported over effective span 1800 mm under pure bending. The beams will be provided with adequate shear reinforcement so that the failure of the beams may due to pure flexure. The grade of concrete M50 generally with three foundry sand replacement levels (FSL) in each grade i,e, 15%, 25%, & 35% FSL are considered.
Keywords: Flexural, Foundry Sand, Fine Aggregate.
Seismic analysis of base isolated building in rc framed structures 1868Anusha Reddy
An earthquake is the shaking of the surface of the Earth, which may be dangerous enough to destroy major buildings and kill thousands of people. To protect the structures from earthquake effects there is a system known as base isolation systems. Base isolation is the technique is most widely accepted and used for seismic protection of the building in earthquake prone areas. The aim of this research is to study the mode period of different structures under fixed condition and base isolated condition. In this study, two building’s are considered first structure is G+13 storey building and second is G+5 storey building which is designed and analyzed in E TABS 13.2.1 software.
Seismic base isolation in strengthening an existing retrofitted masonry reinf...eSAT Journals
Abstract Seismic base isolation is a fast advancing technology in which the superstructure is isolated from the entire structure or from the substructure by means of rubber bearing isolators or frictional sliding isolators. The main aim of the base isolation technology is to isolate the structure from the harmful effects of the ground accelerations or earthquake excitations. In this paper, the procedure for the selection of the three ground motions is briefly explained and they are used in analyzing a masonry – reinforced concrete office building for the Internal Revenue Service in the Huating County of the Pingliang City in China. The structure is first analyzed with the PKPM software to ascertain the structural internal forces are within reasonable limits but because this software cannot be used to advance analysis in the area of base isolation, Sap 2000 is used to remodel the structure, analyze, then apply the seismic base isolation. This office building has been strengthened to be fortified against ultimate bearing capacity failure as it is an existing structure. The lead rubber bearing isolators, LRB 400, LRB 500 and LRB 600 are used to isolate the building model and results from the structural response are compared, first amongst the time histories and then between the enveloped time histories and the response spectrum. The floor joint accelerations are observed to be reduced and the joint velocities as well, whereas the floor joint displacements are increased. The response spectrum alone is seen to not be an enough ground acceleration parameter in a seismic analysis and design of this model; as such it is recommended to include time history analysis. The maximum percentage decrease in acceleration and velocity can be seen occurring in the response spectrum, namely, 85.82% and 59.76%, respectively. The maximum percentage increase in the displacement is also evident in the response spectrum, 57.59%. In the time histories, the maximum is seen in Ec County Y-direction for the acceleration reduction at a value of 60.57%; Delta artif records a maximum velocity reduction of 28.42% in the Y-direction and finally, the Delta artif X-direction also records a maximum displacement increment, at a value of 26.36%.
Comparision of building for sesmic response by using base isolationeSAT Journals
Abstract
Throughout historic time Earthquakes are one of the natural hazards that occur due to sudden violent movement of earth’s
surface which causes damage to property, especially to man-made structures . Base isolation is one of the most powerful tools of
earthquake engineering pertaining to the passive structural vibration control technologies. The application of the base isolation
techniques to protect structures against damage from earthquake attacks has been considered as one of the most effective
approaches and has gained increasing acceptance during the last two decades. This paper present three dimensional nonlinear
time history analysis is performed on r/c building by the use of computer program SAP 2000 v12.0.0. The dynamic analysis of the
structure has been carried out and the performance of the building with and without isolator is studied. The main objective here is
to make seismic response control by providing Isolators and comparing between the fixed based and isolated base building.
Rubber bearing and Friction pendulum bearing are used
Keywords: Base Isolation; Seismic Response; Time History
Seismic analysis of high damping rubber bearings for base isolationeSAT Journals
Abstract
Base isolation is a mechanism that provides earthquake resistance to the new structure. The base isolation system decouples the building from the horizontal ground motion induced by earthquake, and offers very stiff vertical components to the base level of the superstructure in connection to substructure (foundation). It shifts the fundamental lateral period, dissipates the energy in damping, and reduces the amount of the lateral forces that transferred to the building, inter-story drift, and the floor acceleration.
The work deals with modelling and finite element analysis of a high damping rubber bearing in ANSYS 12.0. A displacement controlled transient analysis was done to analyse the behaviour of the isolator during earthquakes.
Keywords: Base isolation, High damping rubber, Transient analysis
Study on laminated rubber bearing base isolators for seismic protection of st...eSAT Journals
Abstract
Base isolation or seismic base isolation is an effective means for protection of structures, its contents and its occupants during the event of an earthquake. The principle of base isolation is vibration isolation. It decouples the building from damaging action of the earthquake. The isolator partially reflects and partially absorbs input seismic energy before it gets transmitted to the superstructure. Laminated Rubber Bearing Isolators are placed between the superstructure and foundation, which reduces the horizontal stiffness of the system. It thereby increases the time period of the structure and decreases the spectral acceleration of the structure. The superstructure acts like a rigid body, thus inter storey drift is reduced. Such type of isolators are used in practice in India, yet a proper design procedure based on IS code is unavailable. The paper presents design procedure for LRB adopting the procedure of IS 1893:2002 (Part-1) for earthquake resistant design of buildings. Design charts have been developed and presented in this paper which gives isolator diameter and rubber thickness as design outputs. The design procedure requires different input parameters like fundamental period and damping of the fixed base structure, axial load on the column, seismic zone, type of soil and shore hardness of rubber. These design charts enable the designer to easily arrive at the isolator parameters to achieve seismic isolation. Using the charts, case study has been done using SAP2000. Building displacement and acceleration are compared for model with and without base isolator. Comparative study of linear and non-linear base isolators has also been carried out. Linear and non-linear time history analysis has been done using El Centro earthquake.
Keywords: base isolation, laminated rubber bearing, IS Code, seismic protection, design charts, time history analysis, SAP2000
A study on the performance of circular footing embedded in geogrid reinforced...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Base Isolation of Building Frames- Experimental Study Using Shake Table.onkar solshe
We have tried to give a detailed study of the behaviour of the buildings provided with base isolation , doing it experimentally on the SHAKE TABLE and also validating the results using Etabs software.
SEISMIC RESPONSE OF UNSYMMETRIC BUILDING WITH OPTIMALLY PLACED FRICTION DAMPERSIAEME Publication
Conventional methods of seismic rehabilitation with concrete shear walls or steel bracing
are not considered suitable for some buildings as upgrades with these methods would have
required expensive and time consuming foundation work. Supplemental damping in
conjunction with appropriate stiffness offers an innovative and attractive solution for the
seismic rehabilitation of such structures. This paper deals with the use of friction damper as a
passive dissipative device in order to seismic retrofit of existing structures and discusses the
optimal placement criteria. To fulfill this objective, six storey and ten storey L-shaped
buildings have been modeled with five different damper location formats in SAP2000 subjected
to El Centro and Utterkashi earthquake records. Non-Linear Modal Time History Method has
been used for the analysis and base shear, joint displacement, member forces and hysteresis
energy has been compared to find out most optimal damper location format.
Flexural behaviour of rc beams using foundry sand as partial replacement of f...eSAT Journals
Abstract
The main objective of the study of this work is to re-use the used foundry sand (produced at foundry industries) as a partial replacement to fine aggregate in different percentages (15 to 50%) that can be adopted in concrete along with normal river sand designed to meet the requirements of concrete of grade M50, using foundry sand with OPC have been considered in the study. Though, the main investigation is to be carried out is on the flexural behavior of reinforced foundry sand concrete beams, to facilitate proportioning of foundry sand concrete, compressive strength studies are also carried out. The tests to be carried out on around (18) singly reinforced beams of size 150 mm x 250 mm & overall length 2000 mm, simply supported over effective span 1800 mm under pure bending. The beams will be provided with adequate shear reinforcement so that the failure of the beams may due to pure flexure. The grade of concrete M50 generally with three foundry sand replacement levels (FSL) in each grade i,e, 15%, 25%, & 35% FSL are considered.
Keywords: Flexural, Foundry Sand, Fine Aggregate.
Seismic analysis of base isolated building in rc framed structures 1868Anusha Reddy
An earthquake is the shaking of the surface of the Earth, which may be dangerous enough to destroy major buildings and kill thousands of people. To protect the structures from earthquake effects there is a system known as base isolation systems. Base isolation is the technique is most widely accepted and used for seismic protection of the building in earthquake prone areas. The aim of this research is to study the mode period of different structures under fixed condition and base isolated condition. In this study, two building’s are considered first structure is G+13 storey building and second is G+5 storey building which is designed and analyzed in E TABS 13.2.1 software.
Seismic base isolation in strengthening an existing retrofitted masonry reinf...eSAT Journals
Abstract Seismic base isolation is a fast advancing technology in which the superstructure is isolated from the entire structure or from the substructure by means of rubber bearing isolators or frictional sliding isolators. The main aim of the base isolation technology is to isolate the structure from the harmful effects of the ground accelerations or earthquake excitations. In this paper, the procedure for the selection of the three ground motions is briefly explained and they are used in analyzing a masonry – reinforced concrete office building for the Internal Revenue Service in the Huating County of the Pingliang City in China. The structure is first analyzed with the PKPM software to ascertain the structural internal forces are within reasonable limits but because this software cannot be used to advance analysis in the area of base isolation, Sap 2000 is used to remodel the structure, analyze, then apply the seismic base isolation. This office building has been strengthened to be fortified against ultimate bearing capacity failure as it is an existing structure. The lead rubber bearing isolators, LRB 400, LRB 500 and LRB 600 are used to isolate the building model and results from the structural response are compared, first amongst the time histories and then between the enveloped time histories and the response spectrum. The floor joint accelerations are observed to be reduced and the joint velocities as well, whereas the floor joint displacements are increased. The response spectrum alone is seen to not be an enough ground acceleration parameter in a seismic analysis and design of this model; as such it is recommended to include time history analysis. The maximum percentage decrease in acceleration and velocity can be seen occurring in the response spectrum, namely, 85.82% and 59.76%, respectively. The maximum percentage increase in the displacement is also evident in the response spectrum, 57.59%. In the time histories, the maximum is seen in Ec County Y-direction for the acceleration reduction at a value of 60.57%; Delta artif records a maximum velocity reduction of 28.42% in the Y-direction and finally, the Delta artif X-direction also records a maximum displacement increment, at a value of 26.36%.
Comparision of building for sesmic response by using base isolationeSAT Journals
Abstract
Throughout historic time Earthquakes are one of the natural hazards that occur due to sudden violent movement of earth’s
surface which causes damage to property, especially to man-made structures . Base isolation is one of the most powerful tools of
earthquake engineering pertaining to the passive structural vibration control technologies. The application of the base isolation
techniques to protect structures against damage from earthquake attacks has been considered as one of the most effective
approaches and has gained increasing acceptance during the last two decades. This paper present three dimensional nonlinear
time history analysis is performed on r/c building by the use of computer program SAP 2000 v12.0.0. The dynamic analysis of the
structure has been carried out and the performance of the building with and without isolator is studied. The main objective here is
to make seismic response control by providing Isolators and comparing between the fixed based and isolated base building.
Rubber bearing and Friction pendulum bearing are used
Keywords: Base Isolation; Seismic Response; Time History
Seismic Analysis of Framed R.C. Structure with Base Isolation Technique using...ijtsrd
A Natural Calamity like an earthquake has taken a million lives throughout in our past. The force induced due to earthquake is dangerous and last for short duration of time. There are various techniques that can be used resist the force of an earthquake such as base isolation, bracing etc. The principle of base isolation is to isolate the structure from the motion of an earthquake and protect the structure and also reduce the force being transmitted to the building due to earthquake. For this study, G 13 storied R.C. frame building is considered and time history analysis is carried out using E Tabs 2017 software, and also study investigates structural behavior of multi story building with or without base isolation subjected earthquake ground motion. The Lead Rubber Bearing LRB is designed as per UBC 97 code and the same was used for the analysis of base isolation system. Here we shall studying earthquake resistivity of structure by analyzing the base isolation structure to compare its structural performance with fixed base isolation. Rohan G Raikar | Dr. Shivakumaraswamy | Dr. S Vijaya | M. K Darshan "Seismic Analysis of Framed R.C. Structure with Base Isolation Technique using E-Tabs" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-5 , August 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33166.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/33166/seismic-analysis-of-framed-rc-structure-with-base-isolation-technique-using-etabs/rohan-g-raikar
Dynamic Analysis of Soft Storey Frame with IsolatorsIJMTST Journal
Soft storey buildings are very common in Indian housing construction and the bottom storey is left open without walls for car parking. Past earthquakes showed that these kinds of buildings performed poor and the damages are also heavy. As the base isolation is a technique developed to prevent or minimize damage to building during an earthquake, this study focuses on the time history analysis of a soft-storey building with and without lead rubber isolator. The soft-storey building with and without isolator is analysed using Elcenrto earthquake data and the dynamic characteristics are compared.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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