Experimental study on seismic performance of hollow shear walls with different precast boundary element constructions

被引：0

作者：

Zhang W. ^{[1
]}

Shan H. ^{[1
]}

Qian J. ^{[2
]}

Zhang Y. ^{[3
]}

机构：

[1] Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing

[2] Department of Civil Engineering, Tsinghua University, Beijing

[3] Beijing Everest Green Building Technology Co., Ltd, Beijing

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷

关键词：

hollow shear wall; keyway; precast boundary element; quasi-static test; seismic performance;

D O I：

10.14006/j.jzjgxb.2023.S1.0008

中图分类号：

学科分类号：

摘要：

In order to study the effect of keyways in the precast boundary elements on the seismic performance of hollow shear walls, quasi-static tests were carried out on four specimens with different axial compression ratios and with or without keyways in the precast boundary element of hollow shear walls. The results show that the failure modes of the hollow shear wall specimens with boundary elements of different configurations are all flexural-compression failure, with full of cracks on the wall body and many short cracks on both sides of the vertical hole. The concrete at both ends of the bottom wall crushes, the reinforcement bars are buckled, and part of longitudinal reinforcement fractures. The hysteresis curves of hollow plate shear walls are obviously different with or without a keyway. The hysteresis curves of the shear walls with the keyway are full, while the hysteretic curve of the shear wall without the keyway appears slip. The ultimate drift ratio is 1. 5% -2. 3% . Due to the precast hollow panel has support legs at both ends, the ‘swaying wall’ phenomenon appears when the axial load is relatively low. The keyway in the precast boundary elements can avoid the this phenomenon of hollow shear walls. The load-carrying capacity of shear wall is increased by 15% -19%, and the stiffness and energy dissipation capacity are also improved to a certain extent. Therefore, it is suggested to set a keyway in the precast boundary elements of the hollow shear wall and increase the length of the support legs at both ends of the hollow panel. © 2023 Science Press. All rights reserved.

引用

页码：67 / 74

页数：7

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