钢框架结构抗连续倒塌设计方法研究进展

Research progress on the design method against progressive collapse of steel frame structure

近年来,频繁发生的一系列建筑物连续倒塌事件,造成了重大的人员伤亡和巨大的经济损失,增强结构抗连续倒塌能力的分析研究具有重要意义.针对国内外钢框架结构的抗连续倒塌设计方法的研究进展进行了综述,分析了概念设计法、拉接强度设计法、拆除构件法以及关键构件法的特点和不足之处,并对拆除构件法的分析步骤及改进措施进行了分析,以期为钢框架抗连续倒塌的工程应用提供参考.

In recent years,frequent occurrence of a series of building progressive collapse has caused the worst loss of life and property,the research of increasing building collapse-resistance is of great significance.This paper,in review of the research progress of design methods of steel frame structure against progressive collapse,makes an analysis of the characteristics and shortcomings of the concept design method,tie force method,alternate path method and key component method,in order to provide a reference for the engineering application of steel frame structure against progressive collapse.