Experimental Study of Seismic Behavior and Stiffness Analysis of Multi-Ribbed Sand Aerated Composite Walls

被引：1

作者：

Zhang X. ^{[1
,2
]}

Zhang Y. ^{[2
]}

Zhang Q. ^{[2
]}

Zhang T. ^{[2
]}

Wang L. ^{[3
]}

机构：

[1] Tianjin University Architectural Design Planning Research Institute Co., Ltd., Tianjin

[2] School of Civil Engineering, Tianjin University, Tianjin

[3] Tianjin Port(Group)Co., Ltd., Tianjin

来源：

Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2021年 / 54卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Initial stiffness; Multi-ribbed sand aerated composite wall; Quasi-static test; Seismic performance;

D O I：

10.11784/tdxbz202006037

中图分类号：

学科分类号：

摘要：

To study the seismic behavior and stiffness changes that occur in a multi-ribbed composite wall when used as an embedded infill wall of a steel frame with flexible connection, pseudo-static tests were performed on four full-scale composite walls, and the mechanical behaviors and failure mechanisms of the walls under horizontal reciprocating loads were studied. Comparing the stress processes, failure modes, and test results, the stiffness, ductility, energy dissipation, and other seismic performance indicators were analyzed, and influence of the reinforcement and density of the rib columns on the seismic behavior of the wall were studied. The results indicate that the failure mode of the walls under horizontal reciprocating load were shear failure. Due to mutual restraint of the blocks and ribs, the blocks were detached from the ribs. However, excluding corners of the blocks and joints of the ribs, only little flaking occurred. The cracks formed on the specimens were evenly distributed, and plastic hinges formed at the ends of the ribs. The hysteresis curves were relatively full, with good energy consumption capacity, and the displacement ductility coefficients exceeded 6.9. Thus, displaying excellent elastoplastic deformation performance. Increasing the reinforcement or number of rib columns can restrain the cracking development and improve the bearing capacity, stiffness, deformation, and energy consumption capacity of the specimens. The influence of the reinforcement was significant. Based on the test results, formulas were proposed to approximately calculate the wall stiffness using the fitting method. When the multi-ribbed sand aerated composite walls were used as a steel frame infill wall, the stiffness change due to the change in the frame was reasonable. Based on the analysis, we obtained the influence of the wall on the structure's rigidity when the elastic design was in accordance with frequently encountered earthquakes. © 2021, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.

引用

页码：719 / 727

页数：8

共 17 条

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