装配式钢结构变电站新型梁柱节点参数化分析

Parametric Analysis of Beam-Column Joints of Substations with Prefabricated Steel Structure

为加快装配式钢结构变电站的建设,研究了一种带C形悬臂段的新型装配式梁柱节点,并进行有限元单调加载分析。讨论了翼缘板厚度、宽度和盖板长度等对节点性能的影响,结果表明:增加翼缘板厚能有效改善悬臂段根部的应力集中;减小翼缘板宽度会使节点出现不同程度的刚体转动,对节点的极限承载力和初始刚度影响较大,下降幅值最大达13.1%和18.9%。

In order to speed up the construction of the substation of prefabricated steel structure A new type of fabricated beam-column connection with a C-shaped cantilever section is studied,and the finite element monotonic loading analysis is carried out.The impacts of flange thickness,width and cover length on the joint performance are discussed.The results show that increasing the thickness of the flange plate can effectively improve the stress concentration at the root of the cantilever section,while reducing the width of the flange plate can cause different degrees of rigid body rotation of the joint,which has a greater impact on the ultimate bearing capacity and initial stiffness of the joint,causing an amplitude reduction up to 13.1%and 18.9%respectively.