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针对钢框架腹板双角钢梁柱半刚性节点连接受力复杂、强度和刚度影响因素多等问题,应用非线性有限元软件ANSYS对带有支撑和无支撑的这种半刚性节点进行了数值模拟,分析比较了支撑对梁柱节点区域应力分布的影响,应力应变分布特征以及承载力的变化。结果表明:钢框架腹板双角钢梁柱半刚性节点加上支撑后,较大幅度的提高了节点的刚度和承载力,有效的转移了塑性铰,反复荷载作用下的滞回曲线更加饱满,拥有更好的抗震性能。
Aiming at the problems that the connection of the semi-rigid nodes of the double-angle steel beam and column of steel frame webs is complicated, the factors of strength and stiffness are many and so on, the nonlinear finite element software ANSYS is used to calculate the semi-rigid nodes with and without support The influence of the support on the stress distribution in the node area of the beam-column joint, the distribution of stress-strain and the change of bearing capacity were simulated and analyzed. The results show that the stiffness and the bearing capacity of the double-angle steel beam-column semi-rigid joints of steel frame webs with the support increase greatly, and the plastic hinges are effectively transferred. The hysteresis curve is more full under the repeated load , Have better seismic performance.