楼板对结构抗连续倒塌能力的影响  

Influence of slabs on the progressive collapse behavior of structures

作　　者：梁益[1] 陆新征[1] 李易[1] 叶列平[1] 江见鲸[1] 

机构地区：[1]清华大学土木工程系清华大学结构工程与振动教育部重点实验室,北京100084

出　　处：《四川建筑科学研究》2010年第2期5-10,共6页Sichuan Building Science

基　　金：国家"十一五"科技支撑计划(2006BAJ03A02-01;2006BAJ06B06);清华大学基础研究基金(JC2007003)

摘　　要：建筑结构在意外事件情况时的连续倒塌问题,已成为国内外土木工程学科的研究热点。楼板作为主要的结构构件,对结构的整体性有重要贡献,对结构的抗连续倒塌能力产生较大影响,但现有建筑结构抗连续倒塌研究往往并没有考虑楼板的影响。本文参考美国国防部编制的DoD 2005《结构抗连续倒塌设计》提供的设计流程,对按照我国现行规范设计的8层钢筋混凝土框架进行了连续倒塌仿真分析,通过比较带楼板和不带楼板的2栋框架结构倒塌仿真计算结果,研究了楼板对整体结构抗连续倒塌能力的影响,得到了楼板可对框架结构的抗连续倒塌能力有较大提高的结论。The progressive collapse of the building structures due to accidents has become a hot research topic of civil engineering all around the world.Floor or roof slab,as one of major structural elements,has important contribution to the integration of structures,and therefore could greatly enhance the progressive collapse resistance of structures.But the influence of slabs was not taken into consideration in the existing research work or design specifications.In this paper,mainly referring to the design process proposed in DoD 2005,the collapse processes of two typical Chinese 8-story reinforced concrete（RC） frames with and without slabs respectively are simulated and compared.Then the influence of slabs on the progressive collapse behavior of structures is studied and the result proofs that the slabs can greatly improve the progressive collapse resistance of structures.

关 键 词：连续倒塌 楼板 混凝土框架 仿真分析 

分 类 号：TU312[建筑科学—结构工程]