基于ANSYS自定义单元的半刚性梁柱节点抗震滞回性能模拟分析  

Hysteretic behavior analysis of semi-rigid connection based on User element of ANSYS

作　　者：李冰洋 刘永华[1] 刘中宪[1] LI Bingyang, LIU Yonghua, LIU Zhongxian(Tianjin Key Laboratory of Civil structure protection and reinforcement, Tianjin ChengJian University, Tianjin 300384, Chin)

机构地区：[1]天津城建大学天津市土木建筑结构防护与加固重点实验室,天津300384

出　　处：《世界地震工程》2018年第1期98-104,共7页World Earthquake Engineering

基　　金：国家自然科学基金项目(51108300);国家自然科学基金项目(51678390)

摘　　要：采用峰值指向滞回模型模拟半刚性连接在循环荷载下的非线性行为,建立了能同时考虑几何、材料和连接非线性的精细塑性铰法平面梁柱单元模型,利用ANSYS用户可编程特性(UPFs),对自定义单元进行编译并嵌入到ANSYS平台中。利用试验数据拟合得到滞回模型参数,经自定义单元进行分析计算,得到节点的载荷-位移滞回曲线。通过与试验结果对比分析表明:模拟结果与试验结果吻合良好,该单元模型具有很大优势,可用于半刚性梁柱节点的滞回性能分析。In the paper, the peak pointing hysteretic model was used to simulate the nonlinear behavior of semi - rigid connections under cyclic loading, and the plane beam-column elements model with refined plastic hinge which consideres the geometrical, material and connection nonlinearity was established. The user element was compiled by the User Programmable Features （UPFs） of ANSYS and was embedded into the ANSYS element library. The pa- rameters of the hysteresis model were obtained by fitting the experiment data, and the load-displacement hysteresis curve was gotten by the analysis and calculatation with the user element. Compared with the experimental results, the simulation results show that the simulation results are in good agreement with the test experimental results, the user element has great advantages and can be used to analyze the hysteretic behavior of semi-rigid connection.

关 键 词：半刚性连接 滞回性能分析 ANSYS二次开发 精细塑性铰模型 

分 类 号：TU391[建筑科学—结构工程] TU323.5