【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。更多还原

【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 hysteretic curve agrees well with the test,which indicates that the MVLEM is suitable to simulate the strong nonlinear behavior of shear walls accurately.更多还原