Experimental Reseasch on Structural Performance of Double-Faced Superposed Shear Walls Under Large Eccentric Compression Loading

CHEN Junda; GU Qian; DUAN Pan; WANG Xiang; TIAN Shui; TAN Yuan

doi:10.13204/j.gyjzG23012801

Volume 53 Issue 11

Nov. 2023

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CHEN Junda, GU Qian, DUAN Pan, WANG Xiang, TIAN Shui, TAN Yuan. Experimental Reseasch on Structural Performance of Double-Faced Superposed Shear Walls Under Large Eccentric Compression Loading[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(11): 117-124,174. doi: 10.13204/j.gyjzG23012801

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Experimental Reseasch on Structural Performance of Double-Faced Superposed Shear Walls Under Large Eccentric Compression Loading

doi: 10.13204/j.gyjzG23012801

1. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China;
2. Myhome Prefabricated Building and Technological Co., Ltd., Wuhan 430071, China

Received Date: 2023-01-28

Abstract

Abstract

In order to study the influence of the connection forms and positions of truss rebars and steel meshes on the performance of double-faced superposed shear walls under large eccentric compression loading, three double-faced superposed shear wall specimens were tested. The failure mode, deformability, bearing capacity and stiffness of each specimen under large eccentric loading were compared and analyzed. The test results showed that all specimens exhibited typical ductile failure characteristics under large eccentric compression. Under large eccentric compression, the failure modes, bearing capacity and stiffnesses of specimens with the lower stringed tendons and the steel mesh fully tied but the upper stringed tendons and the steel mesh tied only at two ends (DPCW-1) or the upper and lower stringed tendons and steel mesh fully tied (DPCW-2) were the same. The ultimate bearing capacity and stiffness of the specimen with truss rebars and steel meshes welded (DPCW-3) were higher than those of the specimen DPCW-2.The upper and lower stringed tendons of all the truss rebars yielded, and the strain variations of the upper and lower stringed tendons was were roughly similar to that of the vertical rebars, which indicated that the upper and lower strings of the truss rebars participated in the force when the double-faced superposed shear wall bore large eccentric compression loading. On the basis of the experimental study, the finite element software ABAQUS was used to model and analyze the specimens, and the calculated results were in good agreement with the experimental results. The results of parameter analysis showed that the ultimate bearing capacity of all specimens decreased and the ultimate deflection increased with the increase of eccentric distance. The bond coefficient of concrete superimposed surface had little effect on the ultimate bearing capacity and stiffness of superimposed shear walls under large eccentric compression.
- double-faced superposed shear wall,
- large eccentric compression,
- truss rebar,
- connection method,
- connection position,
- finite element

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References

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