scholarly journals Hysteretic Behavior of Conventionally Reinforced Concrete Coupling Beams in Reinforced Concrete Coupled Shear Wall

2017 ◽  
Vol 11 (4) ◽  
pp. 599-616 ◽  
Author(s):  
Soo-Yeon Seo ◽  
Hyun-Do Yun ◽  
Young-Soo Chun
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Hysteretic Behavior ◽  
Coupling Beams ◽  
Coupled Shear Wall

Application of Steel Plates on the Retrofitting of Current Reinforced Concrete Coupling Beams

2013 ◽  
Vol 721 ◽  
pp. 714-719
Author(s):  
Cheng Bei ◽  
Shi Wei Li ◽  
Ray K.L. Su
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Steel Plates ◽  
Structural Elements ◽  
Lateral Loads ◽  
Coupling Beams ◽  
Coupled Shear Wall

Coupling beams are essential structural elements of reinforced concrete coupled shear wall to resist earthquakes and other lateral loads. But many current reinforced concrete coupling beams are insufficient in resisting lateral loads due to their bad ductility. So a test of retrofitting methods of deep coupling beams with steel plates since their good performance in the ductility and deformation was made to find ways of improving the ductility of the beams, and the results of this retrofitting method prove good because of the incensement of the ductility, deformation and strength of the beams.

Hysteretic Behavior of Reinforced Concrete Coupling Beams with Diagonal Headed-Bars

2013 ◽  
Vol 351-352 ◽  
pp. 734-737
Author(s):  
Wan Shin Park ◽  
Young Soo Chun ◽  
Hyun Do Yun ◽  
Soo Yeon Seo ◽  
Jin Kyu Song ◽  
...  
Keyword(s):  
Seismic Behavior ◽  
Shear Wall ◽  
Hysteretic Behavior ◽  
Test Results ◽  
Coupling Beam ◽  
Reinforcing Bars ◽  
Coupling Beams ◽  
Coupled Shear Wall ◽  
Test Variable ◽  
Wall System

This paper addresses the seismic behavior of coupling beams with headed reinforcing bars in coupled shear wall system. Test variable included the replacement ratios of headed reinforcing bars. The results show that Specimen HB 50 exhibits a better stable behavior in comparison with Specimens Specimen CON and Specimen HB 30. Test results showed that the amount of diagonal reinforcing bars in the coupling beam may be reduced when headed reinforcing bars are utilized.

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.

Investigation of the behavior of reinforced concrete-coupled shear wall with opening using IDA analysis

2018 ◽  
Vol 19 (3) ◽  
pp. 319-332 ◽  
Author(s):  
Safoura Darabi ◽  
Reza Aghayari
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Coupled Shear Wall

A METHOD FOR DETERMINING OPTIMUM LOCATIONS AND NUMBER OF STIFFENING COUPLING BEAMS IN COUPLED SHEAR WALL STRUCTURE

2005 ◽  
Author(s):  
QINGSHAN LIU ◽  
XINGWEN LIANG ◽  
MINGKE DENG
Keyword(s):  
Shear Wall ◽  
Wall Structure ◽  
Coupling Beams ◽  
Coupled Shear Wall

scholarly journals Experimental Study and Numerical Simulation on Hybrid Coupled Shear Wall with Replaceable Coupling Beams

2019 ◽  
Vol 11 (3) ◽  
pp. 867
Author(s):  
Yun Chen ◽  
Junzuo Li ◽  
Zheng Lu
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Response Strength ◽  
Middle Part ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Element Analysis ◽  
Retention Capacity ◽  
Coupled Shear Wall ◽  
Replaceable Fuse

The coupled shear wall with replaceable coupling beams is a current research hotspot, while still lacking comprehensive studies that combine both experimental and numerical approaches to describe the global performance of the structural system. In this paper, hybrid coupled shear walls (HSWs) with replaceable coupling beams (RCBs) are studied. The middle part of the coupling beam is replaced with a replaceable “fuse”. Four ½-scale coupled shear wall specimens including a conventional reinforced concrete shear wall (CSW) and three HSWs (F1SW/F2SW/F3SW) with different kinds of replaceable “fuses” (Fuse 1/Fuse 2/Fuse 3) are tested through cyclic loading. Fuse 1 is an I-shape steel with a rhombic opening at the web; Fuse 2 is a double-web I-shape steel with lead filled in the gap between the two webs; Fuse 3 consists of two parallel steel tubes filled by lead. The comparison of seismic properties of the four shear walls in terms of failure mechanism, hysteretic response, strength degradation, stiffness degradation, energy consumption, and strain response is presented. The nonlinear finite element analysis of four shear walls is conducted by ABAQUS software. The deformation process, yielding sequence of components, skeleton curves, and damage distribution of the walls are simulated and agree well with the experimental results. The primary benefit of HSWs is that the damage of the coupling beam is concentrated at the replaceable “fuse”, while other parts remain intact. Besides, because the “fuse” can dissipate much energy, the damage of the wall-piers is also alleviated. In addition, among the three HSWs, F1SW possesses the best ductility and load retention capacity while F2SW possesses the best energy dissipation capacity. Based on this comprehensive study, some suggestions for the conceptual design of HSWs are further proposed.

Identification of the dynamic properties of a reinforced concrete coupled shear wall residential high-rise building

2012 ◽  
Vol 39 (6) ◽  
pp. 631-642 ◽  
Author(s):  
Natthapong Areemit ◽  
Michael Montgomery ◽  
Constantin Christopoulos ◽  
Agha Hasan
Keyword(s):  
Reinforced Concrete ◽  
State Of The Art ◽  
Dynamic Properties ◽  
Shear Wall ◽  
Full Scale ◽  
Design Parameters ◽  
High Rise ◽  
Coupled Shear Wall ◽  
Current State

As high-rise buildings increase with height and slenderness, they become increasingly sensitive to dynamic vibrations, and therefore the natural frequency of vibration and damping ratio are very important design parameters, as they directly impact the design wind forces. Recent advances in sensing and computing technology have made it possible to monitor the dynamic behaviour of full-scale structures, which was not possible in the past. Full-scale validation of the dynamic properties is useful for high-rise designers to verify design assumptions, especially since recent measurements have shown that damping decreases as the height of the building increases, and in situ damping measurements have been lower than many currently assumed design values, potentially leading to unconservative designs. A 50-storey residential building in downtown Toronto, with a reinforced concrete coupled shear wall lateral load resisting system with outriggers was monitored using current state-of-the-art sensing technologies and techniques to determine, in situ, the dynamic properties under real wind loads. The in situ measurements were then compared with results obtained using current state-of-the-art computer modelling techniques.

Analysis on the Ductility Performance of Reinforced Concrete Coupling Beams in Shear Wall Structure

2013 ◽  
Vol 788 ◽  
pp. 538-541
Author(s):  
Peng Zhang ◽  
Fu Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Strength ◽  
Shear Wall ◽  
Wall Structure ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Element Analysis ◽  
Reinforcement Scheme

Coupling beam, the first line resisting earthquake, is directly related to the overall performance of the shear wall structure. Using the large general finite element analysis software ANSYS, the coupling beam span-depth ratio is 2~3 different reinforcement scheme in finite element analysis. Analysis on the ductility performance of reinforced concrete coupling beams in shear wall structure in three fields: the concrete strength grade, the longitudinal reinforcement ratio and the stirrup ratio, provides a basis for the design of the structure and to provide a reference for similar studies.

Calibration of Parameters for Predicting Hysteretic Behavior of Diagonally Reinforced Concrete Coupling Beams

2017 ◽  
Vol 21 (6) ◽  
pp. 303-310 ◽  
Author(s):  
Hyeyoung Koh ◽  
◽  
Sang Whan Han ◽  
Chang Dae Heo ◽  
Chang Seok Lee
Keyword(s):  
Reinforced Concrete ◽  
Hysteretic Behavior ◽  
Coupling Beams

Accurate and Efficient Simulation of Cyclic Behavior of Diagonally Reinforced Concrete Coupling Beams

2019 ◽  
Vol 35 (1) ◽  
pp. 361-381 ◽  
Author(s):  
Sang Whan Han ◽  
Hyeyoung Koh ◽  
Chang Seok Lee
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Behavior ◽  
Empirical Equations ◽  
Coupling Beams ◽  
Backbone Curve ◽  
Seismic Performance Evaluation ◽  
Coupled Shear Wall ◽  
Forward Stepwise ◽  
Strength And Stiffness ◽  
Proper Values

Diagonally reinforced concrete coupling beams (DRCB) play an important role in coupled shear wall systems since these members dissipate most seismic input energy during earthquakes. For reliable seismic performance evaluation using nonlinear response history analyses, it is important to use an accurate analytical model for DRCBs. In this study, the Pinching4 model is used as a base model to simulate the cyclic behavior of DRCBs. To simulate the cyclic behavior of DRCBs using the Pinching4 model, the constituent modeling parameters for backbone curve, pinching, and cyclic deterioration in strength and stiffness should be computed. To determine the proper values of the constituent modeling parameters accurately and efficiently, this study proposes empirical equations for the modeling parameters using forward stepwise regression analyses. This study shows that the cyclic behavior of DRCBs is accurately simulated using the Pinching4 model with constituent parameters calculated from the proposed empirical equations.

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