Study on performance of buckling restrained steel plate shear wall with sub-cover plates and its design method
Fan Zhong1 Li Yuanyuan2 Zhu Dan1 Liu Xuelin1 Wu Renmin3 Han Hua3
1. China Architecture Design & Research Group, Beijing 100044, China; 2. Southeast University, Nanjing 211189, China;
3. China Metallurgical Construction Group (Tianjin) Construction Engineering Co., Ltd.，Tianjin 300300, China
Abstract：The non-linear finite element analysis software ABAQUS is used to study the seismic performance of the buckling restrained steel plate shear wall (BRSPSW) with sub-cover plates. Taking the aspect ratio of the shear wall and the thickness ratio of the cover plates as variables, the seismic performance of BRSPSW under the horizontal cyclic loading is analyzed, and the out-of-plane deformation and stress of the steel plate, deformation of the cover plates and stress of the steel bar are studied. The hysteretic behavior and deformation characteristics of the steel plate obtained by nonlinear finite element simulation agree well with the experimental results. When the inter-story drift angle is about 1/300, the BRSPSW yields; when it reaches 1/50, the hysteresis curve is similar to the elastic perfectly-plastic one. When the thickness ratio of the cover plates tc/tw is not smaller than 7, the out-of-plane deformation of the steel plate can be effectively restrained, while the ratio of the buckling half-wave length of the steel plate to the steel plate thickness λ/tw remains basically unchanged. Simplified calculation model of the steel plate and the sub-cover plates are established, according to the principal compressive stress of the steel plate, the calculation formula for the extrusion stress of the steel plate is derived, which can easily determine internal force of the split bolt and bending moment of the sub-cover plates. The distribution of bending moment of the cover plates obtained by the simplified calculation method, which is relatively conservative, is very close to the finite element simulation result.
范重 李媛媛 朱丹 刘学林 武仁民 韩华. 分块盖板屈曲约束钢板剪力墙受力性能与设计方法研究[J]. 土木工程学报, 2021, 54(6): 1-13.
Fan Zhong Li Yuanyuan Zhu Dan Liu Xuelin Wu Renmin Han Hua. Study on performance of buckling restrained steel plate shear wall with sub-cover plates and its design method. 土木工程学报, 2021, 54(6): 1-13.
