偶然荷载结构抗连续倒塌的设计方法

对于结构抗连续倒塌的设计研究,国外的设计规范中相继作了相关的抗倒塌要求规定,但是这些规范给出的只是概念性的要求,没有可操作可实施的设计方法,国内的设计规范此方面的研究还是空白。因此目前结构设计难以实现抗连续倒塌的性能设计。本文采用静力非线性有限元倒塌分析法,进行连续倒塌计算分析,提出与中国设计规范背景相适宜的、具有可操作性的抗连续倒塌设计方法。

Design method of structure for progressive collapse prevention by accidental load

There exist some articles in foreign design codes to prevent the progressive collapse,but these codes only give conceptual requirements,no practical and operable design method is presented.There still is a blank in national design code for progressive collapse prevention,so it is difficult currently to conduct performance design for progressive collapse prevention.Based on static nonlinear analysis of progressive collapse program,the design method of progressive collapse prevention is put forward,which is suitable to national design codes,and is also practical and operable.