Experimental and numerical investigations on seismic behavior of hybrid braced precast concrete shear walls

2019 ◽  
Vol 198 ◽  
pp. 109560 ◽  
Author(s):  
Hong-Nan Li ◽  
Ya-Chao Tang ◽  
Chao Li ◽  
Li-Ming Wang
Keyword(s):  
Seismic Behavior ◽  
Precast Concrete ◽  
Shear Walls ◽  
Numerical Investigations

Experimental Study on Seismic Behavior of Double-Wall Precast Concrete Shear Wall

2014 ◽  
Vol 919-921 ◽  
pp. 1812-1816 ◽  
Author(s):  
Quan Dong Xiao ◽  
Zheng Xing Guo
Keyword(s):  
Energy Dissipation ◽  
Seismic Behavior ◽  
Failure Modes ◽  
Precast Concrete ◽  
Shear Walls ◽  
Shear Wall ◽  
Initial Stiffness ◽  
Displacement Ductility ◽  
Energy Dissipation Capacity ◽  
Double Wall

To study the seismic behavior of Double-Wall Precast Concrete (DWPC) shear wall, three full scale specimens are tested and compared under low-cyclic reversed loading, including two DWPC shear walls and one normal Cast-In-Situ (CIS) shear wall. By observing their experimental phenomena and failure modes, contrasting their displacement ductility coefficients, hysteretic curves, skeleton curves and energy dissipation capacity, the seismic behavior were synthetically evaluated on aspects of strength, stiffness, ductility and energy dissipation. Compared with CIS specimen, DWPC specimens have higher initial stiffness, increased cracking loads by 43% to 47%, and the ultimate loads increased by 22% to 23%. The displacement ductility ratios also meet the ductility requirements with value of 5. The hysteretic curves of three specimens are plump, and the trend of skeleton curves is basically the same. The DWPC specimens demonstrated a good energy dissipation capacity. All the specimens had shown favorable seismic performance.

Experimental seismic behavior of squat shear walls with precast concrete hollow moulds

2019 ◽  
Vol 18 (4) ◽  
pp. 871-886 ◽  
Author(s):  
Wenlong Han ◽  
Zuozhou Zhao ◽  
Jiaru Qian ◽  
Yingbao Zhang ◽  
Tao Ma
Keyword(s):  
Seismic Behavior ◽  
Precast Concrete ◽  
Shear Walls

scholarly journals Comparative Study of Seismic Behavior between Monolithic Precast Concrete Structure and Cast-in-Place Structure

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Chao-gang Qin ◽  
Guo-liang Bai ◽  
Ya-zhou Xu ◽  
Ning-fen Su ◽  
Tao Wu
Keyword(s):  
Concrete Structure ◽  
Seismic Behavior ◽  
Precast Concrete ◽  
Shear Walls ◽  
Typical Feature ◽  
Seismic Intensity ◽  
Structure Model ◽  
Coupling Beam ◽  
Plastic Stage ◽  
Precast Elements

We doubt whether the monolithic precast concrete structure could be designed as the cast-in-place structure in high seismic intensity area. To solve the puzzle, the 1/5 scaled monolithic precast concrete structure model and cast-in-place structure model were designed and tested by shake table. Comparative analysis between them was made to better understand their seismic behavior. Based on the experimental results, the failure pattern and mechanism were different, which was concentrated damage in coupling beam and then extended to shear walls of CIPS, and the weak connections presented cracks between precast elements besides the damage coupling beam of MPCS. The natural frequency of MPCS possessed a typical feature for the weakness of connections, which was the initial one greater than that of CIPS and decreased fast after the first waves with PGA of 0.035 g. Acceleration amplifying factors presented variation trend under the different earthquake waves. The distribution of seismic response presented linearity along the height of models in plastic stage and turned into nonlinearity later for severe damage. In general, the MPCS and CIPS had similar seismic responses, except typical characteristics. And they were proven to have better seismic performance without collapse under the high-intensity earthquake waves.

Numerical Analysis of Seismic Behavior of a Concealed Bracing Connection for Precast Concrete Shear Walls

2014 ◽  
Vol 580-583 ◽  
pp. 1696-1699
Author(s):  
Qiao Jin ◽  
Wan Nan Guo ◽  
Wei Jian Zhao ◽  
Bin Zhang ◽  
De Peng Zhang
Keyword(s):  
Finite Element ◽  
Seismic Behavior ◽  
Precast Concrete ◽  
Shear Walls ◽  
Element Model ◽  
Shear Wall ◽  
Wall Structure ◽  
Element Analysis ◽  
Shear Connection ◽  
Precast Shear Wall

Aiming at the horizontal connection joint of the precast shear wall structure, this paper presents a new-type horizontal wall-to-wall connection. Based on the ABAQUS finite element analysis platform, an accurate finite element model of shear connection joints was built. By quasi-static numerical tests, the seismic behavior of the proposed connection of the precast shear wall system was analysed and compared with that of the traditional cast-in-place connection. The numerical results show that the seismic performance of the presented connection, such as deformability and energy-dissipation capacity, is slightly lower than that of its cast-in-place counterpart.

Effects of openings on the seismic behavior and performance level of concrete shear walls

2019 ◽  
Author(s):  
Hossein Alimohammadi ◽  
Mostafa Dalvi Esfahani ◽  
Mohammadali Lotfollahi Yaghin
Keyword(s):  
Static Analysis ◽  
Cross Section ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Shear Wall ◽  
Constant Cross Section ◽  
Added Resistance ◽  
Different Shapes ◽  
And Performance ◽  
Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

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