Experimental study on seismic performance of steel-connection precast shear walls with earthquake-damage reparability

被引：0
|
作者：
Yan G.-Y. [1 ]
Chen Y.-H. [1 ]
Wu Y.-X. [2 ]
Zhang P.-Q. [1 ]
Li J.-H. [3 ]
机构：
[1] Fujian Provincial Key Laboratory of Advanced Technology and Information in Civil Engineering, School of Civil Engineering, Fujian University of Technology, Fuzhou
[2] College of Civil Engineering, Fuzhou University, Fuzhou
[3] CSCEC Science & Technology（Fuzhou）Co.，Ltd., Fuzhou
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2023年 / 36卷 / 06期
关键词：
earthquake-damage reparability; precast shear walls; quasi static test; seismic performance; steel connection;
D O I：
10.16385/j.cnki.issn.1004-4523.2023.06.013
中图分类号：
学科分类号：
摘要：
To enhance the seismic performance of prefabricated shear walls and realize structural reparability after earthquake-induced damage，a repairable steel-connection precast shear wall（RS-PSW）is proposed. It could be achieved that the damage to the structure is concentrated on the steel connection by replacing the vulnerable bottom area of shear walls with steel-connection area. The function of reparability is implemented by replacing damaged steel-connection members after earthquakes. The ordinary concrete shear wall（SW0），specimen RS-PSW1（initial loaded），and specimen RS-PSW2（loaded after seismic damage）are subjected to low circumferential reciprocal loading tests to compare and analyze the failure modes，hysteretic behavior，stiffness and bearing capacity degradation，energy dissipation and seismic damage reparability of RS-PSW. The results show that compared with SW0，RS-PSW1 exhibits a sharp reduction of cracks in the upper precast concrete wall when the displacement angle reached 1.43%，and the deformation is concentrated in the steel-connection area. Compared with SW0，the bearing capacity and stiffness of repaired specimen RS-PSW2 have slightly decreased，but the ductility and energy dissipation have greatly improved，the failure displacement angle of RS-PSW2 reaches 2.67%，which is 66.7% higher than SW0. It indicates that RS-PSW2 presents a better deformation capacity. The seismic performance indexes of specimen RS-PSW2 under reloading are basically the same as those under initial loadign，which verifies that RS-PSW can realize the repairable function of earthquake-induced damage，and the seismic performance of the structure can be quickly restored by replacing the damaged steel connectors. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：1579 / 1589
页数：10
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