建筑钢结构抗连续性倒塌各国规范设计及分析

发布时间：2018-01-04 08:02

本文关键词：建筑钢结构抗连续性倒塌各国规范设计及分析　出处：《解放军理工大学学报(自然科学版)》2014年06期 　论文类型：期刊论文

【摘要】：为了给中国高层建筑钢结构抗连续性倒塌设计提供参考和思路,简要介绍了英国、欧洲、美国、日本等国家和地区抗连续性倒塌设计的构造措施、设计方法及流程等,重点针对各种规范关于分析方法、去除构件位置、荷载施加、破坏准则等关键问题,综合比较各种设计方法的优缺点和适用范围。分析表明,拉结强度法缺乏理论验证,去除构件法并未考虑构件失效时间和柱残余承载力对动力效应和内力重分配的影响,分析结果过于保守,关键构件法中偶然荷载的量化还存在争议。设计中应根据用途、重要性以及层数对结构进行分类,针对不同结构分类采取不同等级的抗连续性倒塌设计方法,同时应针对新建结构和已建结构区别对待。
[Abstract]:In order to provide references and ideas for the continuous collapse design of steel structures in China, this paper briefly introduces the structural measures of the anti-continuity collapse design in Britain, Europe, the United States, Japan and other countries and regions. Design methods and processes, focusing on various specifications on the analysis method, remove the location of the component, load, failure criteria and other key issues. Comprehensive comparison of the advantages and disadvantages of various design methods and the scope of application. The analysis shows that the tensile strength method is lack of theoretical verification. The effect of failure time and column residual bearing capacity on dynamic effect and internal force redistribution is not taken into account in the method of removing component, and the analysis results are too conservative. It is still controversial to quantify the accidental load in the key component method. In the design, the structure should be classified according to the use, importance and the number of floors, and different classes of continuous collapse design methods should be adopted for different structural classification. At the same time, the new structure and the existing structure should be treated differently.
【作者单位】：同济大学土木工程学院;同济大学土木工程防灾国家重点实验室;
【基金】：国家自然科学基金资助项目(51120185001,51408418) 中国博士后科学基金资助项目(2013M531216)
【分类号】：TU391-65
【正文快照】： 美国土木工程协会(the American Society ofCivil Engineers,ASCE)在ASCE 7-10中[1],对结构连续性倒塌的定义如下:在偶然荷载作用下结构发生局部破坏,这种破坏沿构件进行传递,并引发连锁反应,最终导致整体结构倒塌或者造成与初始局部破坏不成比例的结构大范围倒塌。英国规范Bu

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