火灾下工程结构连续性倒塌分析与设计方法探讨

Discussion on Analysis and Design Methods of Preventing Structural Progressive Collapse in Case of Fire

给出了火灾下工程结构连续性倒塌的定义,分析了工程结构在火灾作用下的特点,并给出了火灾连续性倒塌判断流程。在介绍目前常用的工程结构抗连续性倒塌分析设计方法的基础上,提出了采用替代路径法中的非线性静力分析方法对建筑结构进行火灾作用下抗连续性倒塌设计的思路。

The definition of the structural progressive collapse in case of fire is presented. The structural characteristics in case of fire are analyzed and the judgment process of structural progressive collapse is given. On the basis of introduction of commonly used analysis and design methods of structural progressive collapse, a design idea for preventing structural progressive collapse in case of fire is put forward by means of nonlinear static analysis in alternative path method.