框架结构不同刚度节点抗连续性倒塌性能分析

应用线性静力分析和非线性力分析的方法,对框架结构连续性倒塌性能进行分析计算,结果表明:线性静力分析时,全刚性节点的结构发生连续性倒塌需要的荷载是半刚性节点结构的1.167倍;非线性动力分析时,半刚性节点结构在3.0s时发生连续性倒塌,而全刚性节点结构未发生连续性倒塌.

Analysis of Anti-Progressive with Different Collapse of Frame Structures Joint Stiffness

There are corresponding conceptual requirements for anti-progressive collapse of structures in foreign countries, but no practical modified designs have been developed yet. And the research related to this is still at the preliminary stage in China. On the basis of the linear static procedure and nonlinear dy- namic procedure,the principle of progressive collapse of frame structures was analyzed and calculated. The results show that the progressive collapse load of full-rigid node structures is 1. 167 times that of semi-rigid node structures in the linear static analysis, and in nonlinear dynamic analysis, the continuous collapse of semi-rigid node structures occurs at 3.0s,and the progressive collapse of the full- rigid node structures does not take occur.