基于非线性有限元的房屋建筑钢梁节点受力极限研究

Research on the Ultimate Stress of Steel Beam Joints in Building Based on Nonlinear Finite Element Method

为解决传统房屋建筑钢梁节点受力极限分析残差高的问题,基于非线性有限元分析房屋建筑钢梁节点受力极限。基于非线性有限元分析,模拟房屋建筑钢梁节点受力数值,通过建立房屋建筑钢梁节点受力应力-应变关系,运用非线性有限元分析房屋建筑钢梁节点受力规律,得出房屋建筑钢梁节点受力极限。设计实例分析,结果表明:设计方法分析残差明显低于对照组,能够解决传统房屋建筑钢梁节点受力极限分析残差高的问题。

In order to solve the problem of high residual error in limit analysis of steel beam joints in traditional buildings,the limit of steel beam joints in buildings is analyzed based on nonlinear finite element method.Based on the nonlinear finite element analysis,the stress value of the steel beam joint of the building is simulated.By establishing the stress-strain relationship of the steel beam joint of the building,the stress law of the steel beam joint of the building is analyzed by using the nonlinear finite element method,and the stress limit of the steel beam joint of the building is obtained.The results show that the residual error of the design method is significantly lower than that of the control group,which can solve the problem of high residual error of the limit analysis of the traditional building steel beam joints.