基于位移控制多点加载的新型混合连肢墙结构非线性有限元分析

基于含型钢边缘构件混合连肢墙结构试验结果，采用ABAQUS有限元程序建立了结构的数值分析模型，考虑材料非线性和几何非线性，引入Python源程序编制了给定荷载模式下基于位移控制的加载程序，用以模拟循环加载的全过程。数值模拟结果与试验结果对比表明，二者在滞回曲线、骨架曲线、耗能等方面均吻合较好。在此基础上，研究了不同耦连比对结构整体抗震性能的影响，从而寻找适用于高地震烈度区的合理耦连比。分析结果表明：当轴压比为0。2时，耦连比为45%~60%的新型混合连肢墙结构具有良好的抗震性能，塑性铰分布合理，适用于高烈度地震区。

FEM ANALYSIS OF THE HYSTERETIC BEHAVIOR OF INNOVATIVE HYBRID COUPLED WALL SYSTEM BASED ON DISPLACEMENT CONTROLLED MULTI-PIONTS LOADING

Based on the experimental results of hybrid coupled wall system with steel boundary elements,nonlinear finite element analysis was performed to simulate the overall process under cyclic loading with FEM program ABAQUS,in which geometric and material nonlinearities were taken into account. By using Python language,a displacement-controlled loading program was put forward with the given lateral force pattern. The comparison of analytical results with test ones reveals that they agree well in hysteretic curve,skeleton curve and energy dissipation. Based on the proposed model,parametric analysis was carried out to study the effect of coupling ratio,to propose a suitable value in high earthquake intensity area. The results reveal that when the axial compression ratio is equal to 0.2,the innovative system has excellent seismic performance with the coupling ratio of 45% to 60%,and the distribution of plastic hinges is reasonable,so it is suitable to be used in high seismic regions.