不同抗震设防标准下多层钢框架结构抗倒塌能力的研究

英文篇名：A study on the collapse-resistant capacity of multi-story steel frames with different seismic fortification levels
中文刊名：苏州科技学院学报(工程技术版)
英文刊名：Journal of Suzhou University of Science and Technology(Engineering and Technology)
作者：袁星 ; 何若全 ; 冯进
英文作者：YUAN Xing ; HE Ruoquan ; FENG Jin(School of Civil Engineering ; SUST ; Suzhou 215011 ; China)
中文关键词：倒塌储备系数 ; 增量动力分析 ; 多层钢框架 ; 抗震设防烈度
英文关键词：Collapse Margin Ratio(CMR) ; Incremental Dynamic Analysis(IDA) ; multi-story steel frames ; seismic fortification intensity
出版日期：2012-09-15
机构：苏州科技学院土木工程学院;
年：2012
期：03
出版单位：苏州科技学院学报(工程技术版)

摘要

为了评估多层钢框架在不同抗震设防标准下的抗倒塌能力,按我国现行规范设计了5个多层钢框架结构,采用美国ATC委员会提出的CMR分析方法对钢框架结构倒塌储备能力进行分析,得出了钢框架算例的相应倒塌储备系数和倒塌概率曲线。分析了不同抗震设防标准多层钢框架IDA计算的结果,评价了不同抗震设防烈度多层钢框架的抗倒塌能力和抗倒塌安全储备,讨论了不同抗震设防标准多层钢框架的倒塌概率,并且提出了抗震设防标准的有关建议。
In order to evaluate the seismic collapse margin of multi-story steel frames with different seismic fortification levels,this paper analyzes five different steel frames designed according to "Code for Seismic Design of Building"(GB50011-2001) by CMR analytical method which was proposed by ATC(Applied Technology Council) committee of America,and gets the corresponding collapse margin ratio and the collapse possibilities under different ground intensities.In this paper,the collapse-resistant capacities and safety margins against collapse of multi-story steel frames with different seismic fortification levels are quantitatively evaluated,with a collapse fragility analysis based on an incremental dynamic analysis(IDA).The collapse possibility of multi-story steel frames with different seismic fortification levels is discussed,and suggestions are proposed to improve the current design.

引文

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