利用带缝钢板剪力墙耗能的自复位体系研究

Research on seismic performance of self-centering system with steel plate shear wall with slits

应用有限元分析软件ANSYS对利用带缝钢板剪力墙耗能的自复位体系进行模拟。通过改变结构中钢绞线的初始预拉力、钢绞线的面积、开缝钢板的厚度等参数来分析结构的刚度、承载能力、复位能力和耗能能力。模拟分析表明:钢绞线的面积和钢板的厚度对结构的性能影响非常大;而钢绞线的初始预拉力对梁柱自复位节点脱开时的荷载以及极限荷载影响明显;合理的参数设计会使结构的塑性变形集中在开缝钢板区域;而梁柱钢绞线等主体构件保持弹性,可以重复使用;地震作用过后,只需更换钢板,便可对结构体系进行快速的修复,同时结构的抗震性能还基本保持不变。

Finite element software ANSYS was used to simulate the self-centering system with steel plate shear wall with slits （SC-SPWS）. The structure for the lateral stiffness, bearing capacity, self-centering ability and en- ergy dissipation capacity were analyzed by changing the initial value of pretension, the areas of steel strand and the thickness of the steel plate shear wall. The results show that the area of steel strand and thickness of steel plate value greatly influenced the structure performance, and the initial value of pretension of steel strand had a clearly effect on the road from the connection decompression and ultimate load. The reasonable parameters will make inelastic deformations of the structure on the steel plate with slits, while the columns and beams remain e- lastic. After the earthquake, the structure can be quickly restored only by replacing the steel plate, and the seis- mic performance of the structure remains unchanged.