由于端板连接节点的多样性,不同构造形式端板连接节点力学性能存在一定差异.有限元分析方法可以通过变化多组几何参数建立大量模型来研究连接节点受力性能,是有效的研究方法之一.在已有试验模型基础上,衍生了一系列端板连接节点有限元模型,考虑材料非线性、几何非线性以及构件之间接触引起的状态非线性影响,对有限元模型进行静力和低周往复荷载计算.计算结果与试验进行了比较,验证了有限元模型的可靠性和有效性,并研究了构造形式对端板连接节点力学性能的影响.
As end plate connection form is varied, the mechanical performance of end plate connections presents difference in different configuration. Numerous models can be made with different geometric parameters using finite element simulation methods that prove to be effective. Based on the test models,a series of finite element models under static loading and cycle loading are gotten by changing some geometric parameters. These models, considering the influence of state nonlinear, geometric nonlinear and material nonlinear, are most reliable and much close to the actual conditions of the project. The reliability of finite element simu- lation method is further validated by comparing the finite element data and obtained experi- ment data. And the influence of end plate configuration on behavior of connections is studied in the paper.