This document summarizes a study that analyzes the seismic performance of a 13-story building modelled with and without shear walls. The building is modeled in ETABS and analyzed using response spectrum method for Zone III seismic conditions. Results show that the model with shear walls experienced significantly less lateral displacement (0.9mm vs 16.1mm) and story drift (0.00005065 vs 0.00325733) compared to the bare frame model. Additionally, the shear wall model had shorter time periods and higher natural frequencies for the first three vibration modes. It was concluded that shear wall structures perform better during seismic events by providing greater lateral stiffness and resistance.
Analysis of rc frame with and without masonry infill wall with different stif...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.
Analysis of rc framed structures with central and partial openings in masonry...eSAT Journals
Abstract In Reinforced concrete frames the masonry infill walls are a common practice in countries like India, where the region is prone to seismic activity. In general, the masonry infill walls are treated as nonstructural element in structural analysis and only the contribution of its mass for is considered and it’s structural parameters like strength and stiffness is generally ignored in practice, such an approach may lead to an unsafe design. Infill walls resist lateral loads but because of the openings in the infill wall the resistance may slightly reduce. The IS code provisions do not provide guidelines for the analysis and design of RC frames with infill wall and for different percentage of openings. In this study, an office or residential building outer side central opening or outer side partial openings are used and analysis is carried for Bare Frame model, infill walls without opening, infill walls with outer periphery central opening and infill wall with outer periphery partial opening models. In ETABS software G+14 RC framed building models has been prepared, Equivalent Static Lateral force method, Response spectrum method has been performed for analysis as per IS 1893 : 2002 including p-delta effects. Storey displacement, Storey shear, Storey drift, with soft storey considering the effects of infill wall with central and partial openings are the parameters considered in this study. For modeling, the Equivalent diagonal strut method has been used to find out the width of Strut using FEMA 273 .The results for bare frame, infill wall, and infill wall with central and partial openings are discussed and conclusions are made. Keywords: Equivalent diagonal strut, stiffness, Drift limitation
Seismic evaluation of rc frame with brick masonry infill wallseSAT Journals
Abstract
Infill panels are widely used as partition walls as well as external walls of the building to fill the gap between RC frames. Non-structural member may provide considerable stiffness to the building and hence may improve the performance of the RC building during ground motions. But In most of the cases, the ignorance of this property of masonry in designing of the RC frame may get an unsafe design. There are two methods are used to determine the effect of ground motion. The effect of ground motion on RC frame building has been carried out by considering with and without the stiffness of infill wall. A comparative study is carried out with RC building using Equivalent Lateral Force method and Response Spectrum method. The masonry infill has been modeled as an equivalent diagonal strut element using Hendry formula. Pushover analysis is carried out on bare frame and frame with infill wall. The model has been generated using STAAD Pro and results obtained from the analysis are compared in terms of strength and stiffness with bare frame.
Keywords: Seismic evaluation, Response Spectrum, masonry infill, diagonal strut.
Analysis of rc frame with and without masonry infill wall with different stif...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.
Analysis of rc framed structures with central and partial openings in masonry...eSAT Journals
Abstract In Reinforced concrete frames the masonry infill walls are a common practice in countries like India, where the region is prone to seismic activity. In general, the masonry infill walls are treated as nonstructural element in structural analysis and only the contribution of its mass for is considered and it’s structural parameters like strength and stiffness is generally ignored in practice, such an approach may lead to an unsafe design. Infill walls resist lateral loads but because of the openings in the infill wall the resistance may slightly reduce. The IS code provisions do not provide guidelines for the analysis and design of RC frames with infill wall and for different percentage of openings. In this study, an office or residential building outer side central opening or outer side partial openings are used and analysis is carried for Bare Frame model, infill walls without opening, infill walls with outer periphery central opening and infill wall with outer periphery partial opening models. In ETABS software G+14 RC framed building models has been prepared, Equivalent Static Lateral force method, Response spectrum method has been performed for analysis as per IS 1893 : 2002 including p-delta effects. Storey displacement, Storey shear, Storey drift, with soft storey considering the effects of infill wall with central and partial openings are the parameters considered in this study. For modeling, the Equivalent diagonal strut method has been used to find out the width of Strut using FEMA 273 .The results for bare frame, infill wall, and infill wall with central and partial openings are discussed and conclusions are made. Keywords: Equivalent diagonal strut, stiffness, Drift limitation
Seismic evaluation of rc frame with brick masonry infill wallseSAT Journals
Abstract
Infill panels are widely used as partition walls as well as external walls of the building to fill the gap between RC frames. Non-structural member may provide considerable stiffness to the building and hence may improve the performance of the RC building during ground motions. But In most of the cases, the ignorance of this property of masonry in designing of the RC frame may get an unsafe design. There are two methods are used to determine the effect of ground motion. The effect of ground motion on RC frame building has been carried out by considering with and without the stiffness of infill wall. A comparative study is carried out with RC building using Equivalent Lateral Force method and Response Spectrum method. The masonry infill has been modeled as an equivalent diagonal strut element using Hendry formula. Pushover analysis is carried out on bare frame and frame with infill wall. The model has been generated using STAAD Pro and results obtained from the analysis are compared in terms of strength and stiffness with bare frame.
Keywords: Seismic evaluation, Response Spectrum, masonry infill, diagonal strut.
Behaviour of 3 d rc frames with masonry infill under earthquake loads an ana...eSAT Journals
Abstract Moderate and astringent earthquakes have struck different places in the world, causing rigorous damage to reinforced concrete
structures. The bond between the structural elements and masonry in-fills of the building is habitually effected by Earthquake. The
voids between horizontal and vertical resisting elements of the building frame is filled by Masonry in-fills. An infill wall enhances
considerably the strength and rigidity of the structure. It has apperceived that frames with in-fills have more vigor and rigidity
compared to the bare frames Hence this study is about the demeanor of 3D-RC frames with and without masonry in-fills utilizing
E-TABS. parameters were studied like displacement, lateral load distribution, stiffness and overturning moment of the frames and
it is concluded that, the in-fill walls are needed to be considered while designing phase of the structures.
Keywords: Earthquake load, 3D RC Frame, Masonry In-Fill
Effect of infill walls on the seismic performance of the multistoried buildingseSAT Journals
Abstract The most commonly used structural system in our country for almost all types of building are multi-storey reinforced concrete frames with masonry infills. Therefore it is essential to understand the seismic behaviour of these structures when subjected to lateral forces. Several research works has been done on the masonry infilled reinforced concrete frames in the past decades. Mortar is used as a binder in normal brick construction in order to create continuous structural form and to bind together the individual units in brickwork. In the present study, analysis has been carried out by considering the increase in height of building from five to ten storied by using finite element software ANSYS 14.5. The seismic analysis of multi-storeyed building frames with infill walls and without infill walls are conducted. 3D analysis will give more realistic values of deflection and stresses. Since this type of study is not feasible in terms of analysis time taken, 2D model was adopted for the present study. A three bay two dimensional building frame is considered with the number of stories varying from 5 storied to 10 storied. The loading applied is as per IS 1893 (Part I): 2002. Equivalent diagonal strut method is adopted for modelling infill walls. The results showed that there is considerable decrease in deflection when infills are used in RC frames. Key Words: Deflection , Equivalent diagonal strut method, lateral load, Solid brick infills, Storey drift
EXPERIMENTAL MODELING OF IN FILLED RC FRAMES WITH OPENINGIAEME Publication
Reinforced concrete frames are usually infilled with masonry walls but, in most designs, both the shear strength capacity of these walls and the contribution of the infill panel openings on the shear strength of the infilled frame, especially in critical cases of seismic loading are generally ignored. This paper reports the results of an experimental study of the influence of central openings in the infill on the sway stiffness of reinforced concrete plane frames. A series of 1:4 scaled structural models with opening ratios from 0 to 50 percent in steps of 10 percent were designed, constructed and tested in the study to obtain the load - displacement profiles.
Influence of Modeling Masonry Infill on Seismic Performance of Multi-Storeyed...ijsrd.com
Masonry infilled RC frames are the most common type of structures used for multi-storeyed constructions in the developing countries, even in those which are located in seismically active regions also. Masonry infill walls are mainly used to increase the stiffness and strength of R C framed buildings. R C framed building with open first storey is known as soft storey, which performs poorly during earthquakes. A similar soft storey effect can also appear top storey level if it is used as service storey. The soft storey located in the upper part of the multistorey building does not significantly affect. To observe the effect of masonry infill panel, it is modeled as an equivalent double diagonal strut. In this study 7 models are taken were analyzed with two different techniques of modelling of masonry infill wall with L type of shear wall when subjected to earthquake loading. The results of masonry infill show more stiffness than the strut modeling technique. It is observed that, providing infill wall and shear wall improves earthquake resistant behavior of the structure and also the effect of water pressure, an attempt is made to develop relationship between strength and stiffness ratios for linear trend line.
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
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.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Quell Dispositivo Wearable Que Ayuda Ah Reducir El Dolor Crónico Con Un Diseño Delgado Y Ligero Es Tan Discreto Como Eficaz Diseñado Para La Comodidad Del Usuario
Behaviour of 3 d rc frames with masonry infill under earthquake loads an ana...eSAT Journals
Abstract Moderate and astringent earthquakes have struck different places in the world, causing rigorous damage to reinforced concrete
structures. The bond between the structural elements and masonry in-fills of the building is habitually effected by Earthquake. The
voids between horizontal and vertical resisting elements of the building frame is filled by Masonry in-fills. An infill wall enhances
considerably the strength and rigidity of the structure. It has apperceived that frames with in-fills have more vigor and rigidity
compared to the bare frames Hence this study is about the demeanor of 3D-RC frames with and without masonry in-fills utilizing
E-TABS. parameters were studied like displacement, lateral load distribution, stiffness and overturning moment of the frames and
it is concluded that, the in-fill walls are needed to be considered while designing phase of the structures.
Keywords: Earthquake load, 3D RC Frame, Masonry In-Fill
Effect of infill walls on the seismic performance of the multistoried buildingseSAT Journals
Abstract The most commonly used structural system in our country for almost all types of building are multi-storey reinforced concrete frames with masonry infills. Therefore it is essential to understand the seismic behaviour of these structures when subjected to lateral forces. Several research works has been done on the masonry infilled reinforced concrete frames in the past decades. Mortar is used as a binder in normal brick construction in order to create continuous structural form and to bind together the individual units in brickwork. In the present study, analysis has been carried out by considering the increase in height of building from five to ten storied by using finite element software ANSYS 14.5. The seismic analysis of multi-storeyed building frames with infill walls and without infill walls are conducted. 3D analysis will give more realistic values of deflection and stresses. Since this type of study is not feasible in terms of analysis time taken, 2D model was adopted for the present study. A three bay two dimensional building frame is considered with the number of stories varying from 5 storied to 10 storied. The loading applied is as per IS 1893 (Part I): 2002. Equivalent diagonal strut method is adopted for modelling infill walls. The results showed that there is considerable decrease in deflection when infills are used in RC frames. Key Words: Deflection , Equivalent diagonal strut method, lateral load, Solid brick infills, Storey drift
EXPERIMENTAL MODELING OF IN FILLED RC FRAMES WITH OPENINGIAEME Publication
Reinforced concrete frames are usually infilled with masonry walls but, in most designs, both the shear strength capacity of these walls and the contribution of the infill panel openings on the shear strength of the infilled frame, especially in critical cases of seismic loading are generally ignored. This paper reports the results of an experimental study of the influence of central openings in the infill on the sway stiffness of reinforced concrete plane frames. A series of 1:4 scaled structural models with opening ratios from 0 to 50 percent in steps of 10 percent were designed, constructed and tested in the study to obtain the load - displacement profiles.
Influence of Modeling Masonry Infill on Seismic Performance of Multi-Storeyed...ijsrd.com
Masonry infilled RC frames are the most common type of structures used for multi-storeyed constructions in the developing countries, even in those which are located in seismically active regions also. Masonry infill walls are mainly used to increase the stiffness and strength of R C framed buildings. R C framed building with open first storey is known as soft storey, which performs poorly during earthquakes. A similar soft storey effect can also appear top storey level if it is used as service storey. The soft storey located in the upper part of the multistorey building does not significantly affect. To observe the effect of masonry infill panel, it is modeled as an equivalent double diagonal strut. In this study 7 models are taken were analyzed with two different techniques of modelling of masonry infill wall with L type of shear wall when subjected to earthquake loading. The results of masonry infill show more stiffness than the strut modeling technique. It is observed that, providing infill wall and shear wall improves earthquake resistant behavior of the structure and also the effect of water pressure, an attempt is made to develop relationship between strength and stiffness ratios for linear trend line.
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
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.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Quell Dispositivo Wearable Que Ayuda Ah Reducir El Dolor Crónico Con Un Diseño Delgado Y Ligero Es Tan Discreto Como Eficaz Diseñado Para La Comodidad Del Usuario
Analysis and design of high rise building frame using staad proeSAT Journals
Abstract The Aim of present study “Analysis and design of high rise building by staad pro 2008” is to define proper technique for creating Geometry, cross sections for column and beam etc, developing specification and supports conditions, types of Loads and load combinations. In this study a 30- storey high rise structure is analyzed for seismic and wind load combination using staad pro 2008 and comparison is drawn. Keywords: Analysis, Geometry, Structure, Wind load
Seismic analysis of vertical irregular multistoried buildingeSAT Journals
Abstract It is understood that buildings which are regular in elevation (regular building) perform much better than those which have irregularity in elevation (irregular building) under seismic loading. Irregularities are not avoidable in construction of buildings. However a detailed study to understand structural behaviour of the buildings with irregularities under seismic loading is essential for appropriate design and their better performance. The main objective of this study is to understand the effect of elevation irregularity and behaviour of 3-D R.C. Building which is subjected to earthquake load. In the present study, a 5 bays X 5 bays, 16 storied structure with provision of lift core walls and each storey height 3.2 m, having irregularity in elevation, is considered as the soft storey 3-D structure. An Irregular building is assumed to be located in all zones. Linear dynamic analysis using Response Spectrum method of the irregular building is carried out using the standard and convenient FE software package. To quantify the effect of different degrees of irregularities all the structures are analysed. In addition, the analysis carried out also enables to understand the behaviour that takes place in irregular buildings in comparison to that in regular buildings. For this the behaviour parameters considered are 1) Maximum displacement 2) Base shear, 3) Time period. Key Words: asymmetric building, soft story, base shear, displacement, soft storey, time period.
Performance Based Evaluation of Shear Walled RCC Building by Pushover AnalysisIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
“Comparison of Maximum Stress distribution of Long & Short Side Column due to...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Dynamic Analysis of RC Multi-storeyed Building - A Comparative Studyijsrd.com
In India with a seismic moderate zone, the equivalent static force method to estimate the seismic force, subsequent vulnerability and behavior of RC building under seismic load is inadequate. The main goal of this paper is to show how the modal analysis can contribute to the understanding the behavior of building using Response Spectrum Method. In this study, Dynamic Analysis of four storied Reinforced Concrete building was investigated using Staad pro and Etabs software packages. For this, Response Spectrum Method was used to evaluate the base shear, frequency, modal mass participation and the mode shapes of the building have been plotted for 15 frequencies. Seismic Zone 3 has been considered and base shear was calculated as per the procedure recommended by IS 1893-2002. The results shows that only slight variation in frequencies and modal participation factors was observed as each software has its own way of considering the mass.
EARTHQUAKE RESISTANT DESIGN OF OPEN GROUND STOREY BUILDING
DOC-20160401-WA0002
1. GLOBAL JOURNAL OF MULTIDISCIPLINARY STUDIES ISSN: - 2348-0459
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EARTHQUAKE ANALYSIS OF G+13MULTI-STOREY BUILDING WITH RESPONSE SPECTRUM
METHOD USING E-TABS
Siddharth Jain,
1
Currently Pursuing Master Degree Program in Structural Engineering in Gyan Ganga Institute of Technology &
Sciences Jabalpur, RGPV University Bhopal, India
Prof. Vijay Kumar Shrivastava,
2
Asst.Prof. Department of Civil Engineering in Gyan Ganga Institute of Technology & Sciences, Jabalpur
Prof. Yogesh Kumar Bajpai
3
HOD, Department of Civil Engineering Gyan Ganga Institute of Technology & Sciences , Jabalpur
Abstract— This paper explain the importance of shear wall frame structures in multi-storey building over bare frame structures.
In this work seismic analysis is presented with two cases first one is bare frame structures and second one is shear wall structure.
In this work a unsymmetrical plan is selected for seismic analysis in ZONE-III. This analysis produce the results such as
maximum lateral displacements, storey drift index and time period. The analysis is completely done by response spectrum
method using E-TABS 9.7.4 software packages.
Keywords— High rise building, Seismic analysis, Response spectrum method, Lateral displacements, Storey drift index, Time
period, Frequenc
I. INTRODUCTION
Shear walls are the structures which resists the lateral forces
such as wind and earthquake forces. When a shear wall-
frame structure is subjected to lateral loads, the different
free deflected forms of the walls and the frame cause them
to interact horizontally through the floor, slabs
consequently, the individual distribution of lateral loading
on the wall and the frame may be very different from the
distribution of lateral loading.
This paper represents the analysis of G+13-storey building
in zone –III , which is analysed by response spectrum
method using E-Tabs sowtware packages.This analysis
gives the comparative results between an unsymmetrical
planned building with and without shear wall. This analysis
gives comparison between different parameters such as –
maximum displacements , storey drift index, Time period
and Frequency.
II. PROBLEM FORMULATION
Details of size and geometry of various structural
components for both framing are shown in table no.1.1
Table-1.1
Sr.
No.
Structural Data Property
1 Concrete Grade M30
2 Type OF Material Isotropic
3
Mass Per Unit
Volume 2.5KN/m3
4
Modulus of
Elasticity 27 KN/m3
5 Poission's Ratio 0.2
6 Concret Strength 30 Mpa
7 Wall Thickness 200 mm
8
R C wall above door
in structural wall
system 200mmx900 mm
9 Slab Thickness 125 mm
10
Sunk Slab
Thickness 145 mm
11 Stair Slab Thickness 150 mm
12
Tensile
Reinforcement 500
13
Shear
Reinforcement 500
14 Number of Stories G+13
15 Depth of Foundation 2m
16 Storey Height 3m
17
Beam size in
Conventional
system (B1)
200mmx600 mm
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III. METHODOLOGY
(i). The complete analysis is done on E-tabs software
packages.
(ii). In this software a centerline drawing of plan which is
drawn on auto cad and imported in ETABS.
(iii). After the gridlines are made for different co-ordinates
system boundary conditions are assigned on the nodes.
(iv). Giving material properties for concrete and steel for
different beam column sections.
(v). Defining seismic parameters as stated in problem
formulation.
(vi). Defining Response Spectrum parameters as per seismic
consideration.
(vii). There are two models are used for the analysis as
shown below–
MODEL-1 BARE FRAME STRUCTURE
MODEL-2 SHEAR WALL STRUCTURE
Figure 1.1 MODEL-1 floor plan of Bare Frame
Structure
Table-1.2
Seismic , Wind , Dead,
Live Loading Parameters
Sr.
No.
Parameter Value
1
Seismic coefficient as per
IS :1893-2000
Seismic zone III
Seismic Zone Factor 0.16
Soil Type
II
(Medium)
Importance Factor (I) 1
Response Reduction Factor 3
2 Dead Load
SDL (Super imposed dead
load)on all Slabs 1.5 KN/m2
SDL (Super imposed dead
load) on sunk & Stair case 4 KN/m2
3 Live Load
Live Load on Slab or FLoors 2 KN/m2
Live Load on Sunk Slab,
Stair Slab
2 KN/m2
4. Thickness of shear wall 0.2m
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Figure 1.2 3D Model of G+13 Storied
Conventional Beam Column System Building. Figure 1.3 3D Model of G+13 Storied RC
Structural Wall System Building.
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Figure 1.4 MODEL-2 l floor plan showing Structure
having shear wall
-
Figure 1.5 l floor plan showing Dimensions of the
structures
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IV. RESULTS AND DISCUSSIONS
1. After the analysis following results obtained –(i)
Lateral Displacement (ii) Storey Drift Index (iii)
Time period and natural frequency.
2. Table shows the results of different parameters
such as lateral displacement and storey drift index .
Table-1.3
3. Comparative analysis of maximum lateral
displacements.
Figure1.6
4. Comparative analysis of storey drift index.
Figure-1.7
5. Generally first three fundamental modes are
considered(according to IS 1893(part-1):2002) for
consideration and corresponding natural period.
Table-1.4 shows the time period and natural
frequency of first 3 fundamental modes.
Table-1.4
MODE
NUMBE
R
MODEL-1 MODEL-2
PERIOD
(TIME)
FREQUENCY
(CYCLES/TIM
E)
PERIOD
(TIME)
FREQUENCY
(CYCLES/TIM
E)
Mode 1 4.69875 0.21282 0.36521 2.73818
Mode 2 3.39534 0.29452 0.24933 4.01071
Mode 3 2.7739 0.3605 0.18149 5.51009
6. STOREY SHEAR.
Table 1.7 Shows variation of storey shear for both
the type of system.
Table 1.4 Storey No. and Storey Shear
COMPARATIVE RESULTS OF OF DIFFERENT MODELS
SUBJECTED TO EARTHQUAKE FORCES
S.NO.
MODEL
NO.
MODE
L
TYPE
MAXIMUM
DISPLACE
MENT AT
TOP IN mm
STOREY
DRIFT
INDEX AT
TOP
1
MODEL-
1
BARE
FRAM
E
16.1 0.00325733
2
MODEL-
2
SHEAR
WALL
STRUC
TURE
0.9 0.00005065
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Fig. 1.8
V. CONCLUSION
1.The maximum lateral displacement at top in the case of
bare frame structure is about 94% greater than shear wall
structure.
2.At top of bare frame structure system is having about
90% greater storey drift index than shear wall system.
3.All the values of storey drift index is in safe limit
according to IS 1893(part-1)-2002.
4. The time period for bare frame is greater than to shear
wall structure. Difference in both the system time period is
about 92.22%.
5.Natural frequency of shear wall structure is 93% greater
than to bare frame structure.
6.From the above results it is obtained that shear wall
structures are more safe compare with bare frame in the case
of worst loading.
7.As shown from the result base shear value of shear wall
system is less than beam column frame (bare frame)
structure.
REFERENCES
1.IS 1893(part-1) – 2002, ― Indian standard criteria of
practice for Earthquake Resistant Design of Structures‖,
Bureau of Indian Standards, New Delhi,India.
2.Bryan Stafford Smith and Alex Coull ― Tall Building
Structures: Analysis and Design‖ 2011 Reprint Edition ,
Wiley India Pvt. Ltd.
3.Pankaj Agrawal & Manish Shrikhande ― Earthquake
Resistant Design of Structures‖ 11th
Edition ,PHI Learning
Private Limited Delhi-110092 2013.
Storey
Storey Shear (KN)
Beam coloumn system
RC Structural Wall
System
13 1139.78 517.78
12 1171.04 527.95
11 2171.18 1229.82
10 3015.05 1829.98
9 3749.52 2338.58
8 4296.48 2735.29
7 4780.92 3060.81
6 5109.09 3284.58
5 5359.12 3467.68
4 5546.65 3589.57
3 5624.79 3671.12
2 5687.29 3701.64
1 5718.29 3752.5
0 5765.43 3732.16
7. GLOBAL JOURNAL OF MULTIDISCIPLINARY STUDIES ISSN: - 2348-0459
www.gjms.co.in
Volume-5, Issue-4, March- 2016 Impact Factor: 2.389
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309-318.
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9.Prof. S.S. Patil, Miss. S.A. Ghadge, Prof. C.G. Konapure,
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Building by Response Spectrum Method‖
International Journal of Computational Engineering
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