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大气腐蚀作用下加劲波纹钢板剪力墙抗震性能研究

Study on the Seismic Performance of Stiffened Corrugated Steel Plate Shear Walls with Atmospheric Corrosion.

作者信息

Ma Xiaoming, Hu Yi, Jiang Liqiang, Jiang Lizhong, Nie Guibo, Zheng Hong

机构信息

Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China.

Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China.

出版信息

Materials (Basel). 2022 Jul 14;15(14):4920. doi: 10.3390/ma15144920.

DOI:10.3390/ma15144920
PMID:35888387
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9318355/
Abstract

Corrugated steel plate shear walls (CSPWs) with three different stiffening methods are proposed in this paper, including unstiffened CSPWs (USWs), cross stiffened CSPWs (CSWs) and asymmetric diagonal-stiffened CSPWs (ASWs). A numerical model was established by ABAQUS 6.13 based on the validation of an existing cyclic test on a CSPW. This paper presents an investigation of the lateral performance under monotonic loading, seismic performance under cyclic loading and seismic performance under atmospheric corrosion of USW, CSW and ASW. The results show that (1) Stiffeners can improve the elastic critical buckling load, the initial stiffness and the ultimate shear resistance of CSPWs, and the effect of asymmetric diagonal stiffeners is more significant than that of cross stiffeners; (2) Stiffeners can improve the energy dissipation capacity and ductility, delay stiffness degradation and reduce the out-of-plane deformation of CSPWs, and the hysteretic performance of ASWs is obviously better than that of CSWs; and (3) Under atmospheric corrosion, stiffeners are conducive to inhibiting buckling and improving the seismic performance of CSPWs, while the seismic performance of CSWs is significantly affected by corrosion, so asymmetric diagonal stiffeners are better than cross stiffeners in improving the seismic performance of CSPWs. Meanwhile, the formula of ultimate shear resistance of corroded specimens is also fitted in this paper, which can provide design suggestions for practical engineering.

摘要

本文提出了三种不同加劲方式的波纹钢板剪力墙（CSPW），包括无加劲波纹钢板剪力墙（USW）、交叉加劲波纹钢板剪力墙（CSW）和不对称斜向加劲波纹钢板剪力墙（ASW）。基于对一个CSPW现有循环试验的验证，利用ABAQUS 6.13建立了数值模型。本文对USW、CSW和ASW在单调加载下的横向性能、循环加载下的抗震性能以及大气腐蚀下的抗震性能进行了研究。结果表明：（1）加劲肋可以提高CSPW的弹性临界屈曲荷载、初始刚度和极限抗剪承载力，且不对称斜向加劲肋的效果比交叉加劲肋更显著；（2）加劲肋可以提高CSPW的耗能能力和延性，延缓刚度退化，减小CSPW的平面外变形，且ASW的滞回性能明显优于CSW；（3）在大气腐蚀作用下，加劲肋有利于抑制屈曲，提高CSPW的抗震性能，而CSW的抗震性能受腐蚀影响显著，因此在提高CSPW抗震性能方面，不对称斜向加劲肋优于交叉加劲肋。同时，本文还拟合了锈蚀试件的极限抗剪承载力公式，可为实际工程提供设计建议。

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