剪力墙非线性宏观单元的研究与单元开发.pdfVIP

第 28 卷第 5 期 Vol.28 No.5 工 程 力 学 2011 年 5 月 May 2011 ENGINEERING MECHANICS 111 文章编号：1000-4750(2011)05-0111-06 剪力墙非线性宏观单元的研究与单元开发 *陈学伟 1,2，韩小雷 1,2 (1. 华南理工大学高层建筑结构研究所，广东，广州 510640 ；2. 华南理工大学亚热带建筑科学国家重点实验室，广东，广州 510640) 摘 要：罕遇地震作用下剪力墙构件易进入塑性阶段而发生弹塑性损伤，准确地模拟剪力墙构件进入非线性状态 后的力学行为对评价剪力墙结构的抗震安全性及基于性能的抗震设计具有重要的意义。通过面向对象语言编制了 基于宏观单元的结构弹塑性分析软件平台MESAP 及多竖向弹簧剪力墙单元(MVLEM)，采用材料本构及Fischinger 学者提出的轴向弹簧本构对按我国规范设计的剪力墙低周往复荷载试验进行分析，其滞回曲线吻合程度较高，表 明该单元能够反映剪力墙构件的强非线性行为，且精度较高。 关键词：宏观单元；剪力墙；本构关系；低周往复荷载试验；弹塑性分析；滞回法则 中图分类号：TU355; O241.82 文献标识码：A RESEARCH AND DEVELOPMENT OF THE SHEAR WALL NONLINEAR MACRO-ELEMENT *CHEN Xue-wei1,2 , HAN Xiao-lei1,2 (1. Tall Building Structure Research Institute, South China University of Technology, Guangzhou, Guangdong 510640, China; 2. State Key Laboratory of Subtropical Architecture Science, South China University of Technology, Guangzhou, Guangdong 510640, China) Abstract: Since the elastoplastic damage occurs in the plastic stage of shear walls under a severe earthquake, the accurate modeling of the inelastic response of shear walls is primary to assess the aseismic safety and performance-based aseismic design. A structural elastoplastic analysis program MEASP which bases on macro elements is developed with object oriented language and the multiple-vertical-line-element model (MVLEM) is implemented in MESAP. The nonlinear macro element MVLEM is adopted to simulate the nonlinear behavior of shear walls designed according to Chinese code under a cyclic reverse loading test，and according to incorporating material constitutive relations as well as the uniaxial spring constitutive relation proposed by Fischinge. The h