X形钢板剪力墙受力性能分析  

Mechanical performance analysis of X shape steel plate shear wall

作　　者：吴笑 李启才[1] 张萍 许开礼 WU Xiao;LI Qi-cai;WANG Yang;ZHANG Ping(Jiangsu Province Key Laboratory of Structure Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州科技大学江苏省结构工程重点实验室,江苏苏州215011

出　　处：《广西大学学报（自然科学版）》2019年第1期85-98,共14页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金项目(51378326);江苏省结构工程重点实验室基金项目(ZD1204)

摘　　要：提出一种适用于自复位结构的新型X形钢板剪力墙,给出X形钢板剪力墙简化受力模型,推导了初始抗侧刚度、屈曲后刚度和极限承载力,并通过数值分析验证了公式的有效性。以跨高比和高厚比为主要参数,对不同参数的模型进行了有限元模拟,结果表明:与两边连接钢板剪力墙相比,X形钢板剪力墙腰部削弱对刚度和承载力影响不大,但滞回曲线更加捏缩;墙板腰部削弱并未影响拉力带倾斜角;当参数跨高比,板厚分别增大时,初始弹性刚度、屈曲后刚度、承载力、等效粘滞阻尼比均有不同程度增大; X形钢板剪力墙能够为自复位结构提供稳定耗能; X形钢板剪力墙破坏模式主要为拉力带受拉破坏。An innovative X shape steel plate shear wall was proposed which is suitable for the selfcentering structure.A simplified mechanical model for X shape steel plate shear wall was put forward.Theoretical strength,flexibility,elastic initial stiffness and post buckled stiffness of X shape steel plate shear wall were formulated,and then verified by numerical analysis.Finite element analysis of the X shape steel plate shear wall was conducted for parameters of spanwidth ratio and height thickness ratio.Research results show that the proposed X shape steel plate with dent of waist possesses pretty close load capacity to the steel plate shear wall with two side connection,but more pinching hysteresis loop.The dent of waist doesn't change the angle of tension field.The initial elastic stiffness,elastic post buckling stiffness,equivalent viscous damp ratio and theoretic strength all increase in different extent with respective raising of spanwidth and thickness of plate X shape steel plate shear wall can provide stable energy consumption for selfcentering structure.The failure mode of X shape steel plate shear wall is mainly caused by tension field which is in tension state.

关 键 词：钢板剪力墙 理论分析 有限元分析 受力性能 破坏模式 

分 类 号：TU398.9[建筑科学—结构工程] TU394