T形短肢剪力墙弹塑性模型及地震反应分析  

Elastoplastic model and seismic analysis of T-Shaped short-leg shear wall

作　　者：李青宁[1] 王宁[1] 蔡卫宁[1] 

机构地区：[1]西安建筑科技大学土木学院,陕西西安710055

出　　处：《地震工程与工程振动》2004年第2期69-74,共6页Earthquake Engineering and Engineering Dynamics

基　　金：陕西省自然科学研究计划项目(2001C29);陕西省教育厅专项科研计划项目(01JK168)

摘　　要：根据短肢剪力墙结构的受力和变形特点,对多竖直杆模型进行了改进,建立了截面位移模型,摒弃了杆模型平截面假定的限制,有效地考虑了剪滞效应和翼缘的影响。利用变分原理导出了T形短肢剪力墙的空间单元刚度矩阵,研制了弹塑性时程分析程序,并输入三种不同的地震动进行了算例分析,计算结果表明,短肢剪力墙结构抗震性能较好,适合于在地震区推广使用。According to mechanical properties and deformation feature of short-leg shear wall, multi-component model is improved by introducing the cross section displacement function which considers the effect of shear-lag and flange plate, and thus it is free of the restriction of plane cross section assumption. Space stiffness matrix is derived by variational principle and program of elastoplastic time-histroy analysis is developed. Finally, an example is calculated by inputting three kinds of earthquake waves. The results show that short-leg shear wall is possessed of relatively good earthquake resistance performance. So it is worthy of using in earthquake zones.

关 键 词：短肢剪力墙 剪滞效应 弹塑性时程分析 抗震性能 

分 类 号：P315.9[天文地球—地震学]