T型钢半刚性连接节点的承载力分析

T型钢半刚性连接节点是一种组合节点,其承载力和初始刚度受到多种因素的影响。根据节点的传力特点,介绍了该类型连接节点承载力的计算方法,通过对节点各组成部分的强度计算,由其中的最小值来决定节点的承载力大小。在此基础上,提出了节点初始刚度的计算方法,采用小变形叠加原理,由节点的初始转角求出节点的初始刚度,并采用已有的三参数模型,对节点的弯矩-转角关系进行了模拟,同时对大量节点模型进行了计算,并与有限元计算结果做了比较。结果表明:该计算方法可靠,可用于结构的初步设计。

ANALYSIS OF THE LOAD-BEARING CAPACITY OF T-STUB SEMI-RIGID CONNECTIONS

T-stub connections are composite ones, whose load-bearlng capacity and initial stiffness are influenced by several factors. Based on its characteristic of transmitting force, the calculation methods of its load-bearing capacity are introduced. After calculating its all components, the load-bearing capacity of T-stub connections is determined by the minimum. Meanwhile, the calculation method of its initial stiffness is presented. The initial stiffness can be calculated through its initial rotation, and its moment-rotation relation is simulated by three-parameter power model. A large number of its models are calculated by these methods, which are compared with the results by finite element method. The results show that the presented methods are reliable and helpful to engineers in structural initial design.