scholarly journals EFFECT OF SHEAR WALL ON PERFORMANCE OF MULTISTOREY BUILDING

2020 ◽  
Vol 4 (5) ◽  
pp. 26-39
Author(s):  
MIRZA AAMIR BAIG ◽  
Rizwan Rashid
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Inertia Force ◽  
High Rise ◽  
Coupled Shear Wall ◽  
Wall Structures ◽  
Seismic Force ◽  
Structural Configurations ◽  
Seismic Forces ◽  
Physical Phenomena

Seismic force, predominantly being an inertia force depends on the mass of the structure. As the mass of the structure increases the seismic forces also increase causing the requirement of even heavier sections to counter that heavy forces. And these heavy sections further increase the mass of the structure leading to even heavier seismic forces. Structural designers are met with huge challenge to balance these contradictory physical phenomena to make the structure safe. The structure no more can afford to be rigid. This introduces the concept of ductility. The structures are made ductile, allowing it yield in order to dissipate the seismic forces. A framed structure can be easily made ductile by properly detailing of the reinforcement. But again, as the building height goes beyond a certain limit, these framed structure sections (columns) gets larger and larger to the extent that they are no more practically feasible in a structure. There comes the role of shear walls. Shear walls provide ample amount of stiffness to the building frame resisting loads through in plane bending. But they inherently make the structure stiffer. So, there must be a balance between the amount of shear walls and frame elements present in a structure for safe and economic design of high-rise structures. Here an attempt has been made to study the behavior of different structures of reinforced concrete with different heights with and without shear walls. Coupled shear walls have also been studied to understand the comparative merit or demerit of framed structures with shear wall structures. Studies have been carried out on sample model structures and analysis has been carried out by ETABS software. It has been ensured to consider sample models that represent the current practices in structural design to include different structural configurations. Models having varied structural configurations like framed, shear wall, coupled shear wall, central core shear wall, core in core etc. have been taken into consideration. The inherent asymmetry present in the structures have also been dealt. The results have been tabulated and plotted to study their comparative behavior and interaction with each other. The findings of the study have been summarized and discussed.

Study on the shear wall structure with combined form of replaceable devices

2017 ◽  
Vol 21 (9) ◽  
pp. 1327-1348
Author(s):  
Cong Chen ◽  
Renjie Xiao ◽  
Xilin Lu ◽  
Yun Chen
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Performance Comparison ◽  
Wall Structure ◽  
Structural Part ◽  
Coupled Shear Wall ◽  
Wall Structures ◽  
Strength And Stiffness ◽  
Energy Dissipated ◽  
Resilient Structure

Structure with replaceable devices is a type of earthquake resilient structure developed to restore the structure immediately after strong earthquakes. Current researches focus on one type of the replaceable device located in the structural part that is most likely to be damaged; however, plastic deformation would not be limited in a specific part but expand to other parts. To concentrate possible damage in shear wall structures, combined form of replaceable devices was introduced in this article. Based on previous studies, combined form of replaceable coupling beam and replaceable wall foot was used in a coupled shear wall. Influences of the dimension and location of the replaceable devices to the strength and stiffness of the shear wall were investigated through numerical modeling, which was verified by experimental data. Performance comparison between the shear walls with one type and combined form of replaceable devices and the conventional coupled shear wall was performed. In general, the shear wall with combined form of replaceable devices is shown to be better energy dissipated, and proper dimensions and locations of the replaceable devices should be determined.

The Analytical Study for Seismic Performance of Coupled Steel Plate Shear Wall

2013 ◽  
Vol 831 ◽  
pp. 149-152
Author(s):  
Kang Min Lee ◽  
Keun Yeong Oh ◽  
Rui Li ◽  
Liu Yi Chen ◽  
Woo Seok Kim
Keyword(s):  
Seismic Performance ◽  
Parametric Analysis ◽  
Analytical Study ◽  
Steel Plate ◽  
Shear Walls ◽  
Shear Wall ◽  
Structural System ◽  
Steel Plate Shear Wall ◽  
High Rise ◽  
Coupled Shear Wall

In the last several decades, coupled shear wall have become recognized as efficient lateral load resisting systems for high-rise structures, increasingly. Coupled shear walls give considerable lateral stiffness and strength as well as providing an architecturally practical structural system. In this paper, in order to observe seismic performance of coupled steel plate shear wall, models of previous study was verified, and coupled shear wall with steel plate was carried out with various parametric analysis. Parametric analysis was performed with various width of bay. As a result, model that aspect ratio of steel plate was close to 1 was the most structurally safe.

Investigations of RC Shear Wall-Frame Structures with Various Openings in Walls under Earthquake Loading

2014 ◽  
Vol 1020 ◽  
pp. 242-247
Author(s):  
Tigran Dadayan ◽  
Ehsan Roudi
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Frame Structures ◽  
High Rise ◽  
Frame Buildings ◽  
Computer Analyses ◽  
The Republic ◽  
Rc Shear Wall ◽  
Almost All ◽  
Seismic Forces

Almost all high-rise buildings have been constructed in the Republic of Armenia for past twenty-five years are Reinforced Concrete (RC) shear wall–frame structures, where shear walls provide most of the stiffness of buildings. The walls in these buildings are designed to sustain earthquake and wind loads. Vulnerability of them during earthquake action depends on many different factors. Some of them are the openings and its location in the walls. Usage of ground stories as parking and garages is demanded large openings in shear walls therefore determination of ultimate sizes of openings is important problems for designers. In this paper, FEM (Finite Element Method) models are used for investigation of stress-strain state of RC wall–frame buildings with various openings in the walls under action of seismic forces. Limitation of size and position of openings are considered in the paper taking into account of building code of Armenia. Various schemes of openings are considered in the article. The existing experimental data of shear walls were performed in various laboratories have been compared with our numerical investigation of RC models based on nonlinear computer analyses. Dynamic analyses of structures using accelerograms are showed sequence of damages in RC wall-frame models. The recommendations for limitation of ratio area of an opening to the whole area of a wall are proposed at the end of the article.

Optimization Design for Coupling Beam Dampers of Shear Walls

2013 ◽  
Vol 444-445 ◽  
pp. 115-121 ◽  
Author(s):  
Zhe Zhang ◽  
Jin Ping Ou ◽  
Zheng He
Keyword(s):  
Carrying Capacity ◽  
Optimization Design ◽  
Shear Walls ◽  
Shear Wall ◽  
Hysteretic Behavior ◽  
Coupling Beam ◽  
Kriging Surrogate Model ◽  
Coupled Shear Wall ◽  
Wall Structures ◽  
High Level

The couple shear wall structures are well known for their anti-lateral stability, they have a promising future in macro complex high-level structures. Coupling beam dampers are the key components of coupled shear wall structures. In this manuscript, metallic in plane yield coupling beam damper with four types of poration and different pore areas are analyzed by Finite Element Method. It is found that the hourglass-shaped poring coupling beam damper has superior hysteretic behavior and higher carrying capacity comparing to other types of poring damper. In addition, the optimized poration parameters are further obtained by using Kriging surrogate model, which maximize the carrying capacity and enhance hysteretic behavior of the hourglass-shaped coupling beam damper.

scholarly journals Shear Wall Design within the Light of Prominent Standards

2020 ◽  
Vol 1 (4) ◽  
pp. 13-19
Author(s):  
Mahyar Maali
Keyword(s):  
Reinforced Concrete ◽  
Shear Walls ◽  
Shear Wall ◽  
Behavioral Differences ◽  
Rc Structures ◽  
Wall Structures ◽  
Load Effects ◽  
Live Loads ◽  
Lateral Rigidity ◽  
Seismic Forces

Reinforced concrete (RC) structures have their own weight, earthquake, wind, dead loads, live loads, creep, etc. throughout their service life. They are exposed to internal and external load effects. In order to meet the horizontal forces such as earthquake and wind from these loads affecting the structure, shear wall structures with high lateral rigidity are needed. Therefore, shear walls are one of the most important structural elements that can resist earthquake forces due to their high lateral rigidity and load bearing capacities. Most of the buildings today are designed according to the old regulations. Therefore, the shear wall was sized and reinforced according to these old regulations. However, to date, standards have been renewed in certain periods. Despite this, shear walls designed according to the old regulations continue to resist seismic forces. In this study, the design and behavioral differences of the reinforced concrete shear walls between the Turkish Regulation that came into force in 2019, and the old regulation were compared. In addition, RC shear walls were evaluated according to ACI-318-19 and EuroCode-2 regulations.

scholarly journals Experimental Comparison Study on Cyclic Behavior of Coupled Shear Walls with Two-Level-Yielding Steel Coupling Beam and RC Coupling Beam

2018 ◽  
Author(s):  
Guoqiang LI ◽  
Mengde PANG ◽  
Feifei Sun ◽  
Liulian LI ◽  
Jianyun SUN
Keyword(s):  
Energy Dissipation ◽  
Lateral Displacement ◽  
Shear Walls ◽  
Shear Wall ◽  
Cyclic Behavior ◽  
Experimental Comparison ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Coupled Shear Wall ◽  
Steel Coupling Beam

Coupled shear walls are widely used in high rise buildings, since they can not only provide efficient lateral stiffness but also behave outstanding energy dissipation ability especially for earthquake-resistance. Traditionally, the coupling beams are made of reinforced concrete, which are prone to shear failure due to low aspect ratio and greatly reduce the efficiency and ability of energy dissipation.  For overcoming the shortcoming of concrete reinforced coupling beams (RCB), an innovative steel coupling beams called two-level-yielding steel coupling beam (TYSCB) is invented to balance the demand of stiffness and energy dissipation for coupled shear walls. TYSCBs are made of two parallel steel beams with yielding at two different levels.  To verify and investigate the aseismic behaviour improvement of TYSCB-coupled shear walls, two 1/3 scale, 10-storey coupled shear wall specimens with TYSCB and RCB were tested under both gravity and lateral displacement reversals. These two specimens were designed with the same bearing capacity, thus to be easier to compare. The experimental TYSCB specimen demonstrated more robust cyclic performance. Both specimens reached 1% lateral drift, however, the TYSCB-coupled shear wall showed minimal strength degradation. Additionally, a larger amount of energy was dissipated during each test of the TYSCB specimen, compared with the RCB specimen. Based on the experimental results, design recommendations are provided.

scholarly journals Evaluation of Steel Plate Shear Wall Performance with Different Sections and Arrangements of Stiffeners and its Effect on Project Management during Construction and Improvement of the Building

2021 ◽  
Vol 11 (1) ◽  
pp. 6043-6063
Author(s):  
Ali Jafarian ◽  
Seyed Babak Jafarian
Keyword(s):  
Steel Plate ◽  
Nonlinear Dynamic Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Economic Benefits ◽  
Lateral Loads ◽  
Steel Plate Shear Wall ◽  
High Rise ◽  
Earthquake Force ◽  
The Future

Considering the increase in the current construction process and the future needs of Iran, the necessity to use high-rise buildings for reduction in urbanization costs and optimal use of land will be inevitable in the future. The performance of steel plate shear wall system as a modern global system, which has an effective application in high-rise buildings and also brings economic benefits compared to previous systems, is evaluated in this study. Steel Plate Shear Walls (SPSW) are a new type of system resistant to wind and earthquake lateral loads, which dates back to the 1970s. In this research, eight samples of shear wall with various stiffening arrangements and sections with ST37 and ST52 alloys are modeled. To evaluate the nonlinear dynamic analysis, the samples are subjected to the San Fernando earthquake force and are modeled and analyzed by ABAQUS software based on the finite element theory. The results of analyzing the samples indicate better performance of the system with stiffener in both vertical and horizontal directions. Also, the use of sections with ST52 alloy has improved the performance of the shear wall by approximately 40%.

scholarly journals Influence of Shear Wall on Seismic Response of a Structure

2021 ◽  
Vol 9 (9) ◽  
pp. 1054-1060
Author(s):  
Siddhesh Bisane
Keyword(s):  
Structural Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Main Concern ◽  
Structural Members ◽  
Lateral Loads ◽  
Comprehensive Understanding ◽  
High Rise ◽  
Story Drift ◽  
Wall Following

Abstract: Structural analysis is the science of determining the effects of different loads on structures. Structural stability and stiffness are a main concern in any high-rise structures. Shear walls are structural members that are mainly responsible for resisting lateral loads predominant on structures. They are mainly responsible to increase the stiffness, reduce story drift and displacement. In order to have a comprehensive understanding about the contribution of shear wall, following research is carried out. This research involves comparing two G+16 structures; one without a shear wall and one with it. The structure has 4 bays of 3m each along X direction and Z direction. In this, we will see how shear wall resists lateral sway and reduces story drift and increases stiffness. As the height increases, the shear wall absorbs more lateral load than the frame. The software to be used for analysis is STAADPro. Keywords: STAADPro, Stiffness, storey displacement, storey drift.

Analysis of Effective Location of Shear Wall for High Rise Building with U – Configuration

2021 ◽  
Vol 23 (2) ◽  
pp. 167-176
Author(s):  
Sekar Mentari ◽  
Rosi Nursani
Keyword(s):  
Lateral Displacement ◽  
Center Of Mass ◽  
Shear Walls ◽  
Shear Wall ◽  
Rotational Axis ◽  
Moment Frame ◽  
Earthquake Loads ◽  
High Rise ◽  
Live Loads ◽  
Special Moment Frame

Indonesia is one of the countries that is prone to earthquakes. In addition to the dead loads, superimposed dead loads, and live loads, the design of buildings in Indonesia must be concerned with earthquake loads. Installing shear walls in the building structure as the Special Moment Frame Dual System is one of a solution to withstand earthquake loads. However, the location of shear walls must be considered, especially in buildings with horizontal irregularities. This study aims to determine the optimum location of the shear walls in a 10-storey building that has U-configuration with dynamic earthquake loads. This research is a numerical simulation ran by modelling the structure with software. To know the effect of the shear wall’s location on a building, several variations of the shear wall configuration with different positions have been conducted. It can be seen the lateral displacement of each floor and the shear force are the response structure to withstand the dynamic earthquake loads. Shear walls that are located close to the center of mass of the building are the optimum variation because the position of the shear wall is the closest to the core area of the building, which is the rotational axis of the building.

Sign in / Sign up

Export Citation Format

Share Document