双腹板角钢-顶底角钢连接半刚性梁柱节点的滞回性能模拟分析

Numerical analysis of the hysteretic behavior for the semi-rigid connections with top and seat angle and double web angle in beam-to-column joints

利用ANSYS软件对双腹板角钢-顶底角钢连接半刚性梁柱节点进行了非线性有限元分析。分析考虑了几何、材料和接触非线性,获得了连接在循环荷载作用下的应力分布、塑性变形以及弯矩-转角滞回曲线,并与试验结果进行了对比。研究结果表明:双腹板角钢-顶底角钢连接梁柱节点具有稳定的滞回性能、良好的延性和耗能能力;ANSYS可用于模拟角钢连接半刚性节点的受力性能。

Nonlinear finite element analyses are carried out using ANSYS software for semi-rigid beam-to-column joints with top and seat angle and double web angle connection. Geometric nonlinearity, material nonlinearity, and contact nonlinearity are considered in analyses. The stress distribution, plastic deformation and hysteretic curve of the connection under cyclic loading are acquired from the analyses. The analytical results, which are compared with the test results, show that top and seat angle and double web angle connection exhibits stable hysteretic behavior, good ductility and good energy dissipation capacity. It also shows that ANSYS can be used to simulate the perform- ance of the semi-rigid joints with angle connection.