修复后两边连接钢板剪力墙抗震性能研究

Study on seismic performance of steel plate shear wall connected on both sides after repair

使用带型钢加劲肋的内嵌钢板对震后受损的两边连接钢板剪力墙结构进行修复可以为两边连接钢板剪力墙结构的震后修复提供依据。通过有限元软件对修复后单跨2层钢板剪力墙结构进行了抗震性能研究,主要探讨了修复结构与未修复结构的面外变形、承载力、刚度和能量耗散量的差异。结果表明:用带型钢加劲肋的内嵌钢板修复两边连接钢板剪力墙是可行的,修复后的结构在遭遇第2次拟静力荷载时,内嵌钢板的面外变形得到了约束,十字加劲修复和斜加劲修复结构承载力分别提升了12.17%和23.10%,累积耗能分别提升了45.93%和57.22%;相较而言,2种修复结构中十字加劲修复结构刚度与未修复结构首次加载时更接近。

The use of embedded steel plate with stiffening rib made of section steel to repair the damaged steel plate shear wall structure on both sides can provide basis for the repair of steel plate shear wall structure on both sides after earthquake.The single-span two-story steel plate shear wall structure was studied by finite element software,and the difference in outof-plane deformation,bearing capacity,stiffness and energy dissipation of the repaired structure and unrepaired structure was mainly explored.The results show that it is feasible to repair the steel plate shear wall connected on both sides with embedded steel plate with stiffening rib made of section steel.When the repaired structure encounters the second pseudostatic loading,the out-of-plane deformation of the embedded steel plate is restrained,repaired with cross stiffeners and with diagonal stiffeners,the bearing capacity of the structure is increased by 12.17%and 23.10%,and the cumulative energy consumption of the structure is increased by 45.93%and 57.22%,respectively.In comparison,the stiffness of the repaired structure repaired with the cross stiffened plate wall is close to that of the unrepaired structure under the first loading.