基于CMR方法的钢框架二次设计研究

英文篇名：The second design study based on the steel frame of the CMR method
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：吴亚进 ; 何若全 ; 冯进
英文作者：WU Yajin ; HE Ruoquan ; FENG Jin(School of Civil Engineering ; SUST ; Suzhou 215011 ; China)
中文关键词：二次设计 ; 倒塌储备系数(CMR) ; 梁柱线刚度比 ; 应力比
英文关键词：second design ; Collapse Margin Ratio(CMR) ; linear stiffness ratio of beam to column ; stress ratio
出版日期：2012-12-15
机构：苏州科技学院土木工程学院;
年：2012
期：04
出版单位：苏州科技学院学报(工程技术版)

摘要

采用美国ATC委员会提出的CMR分析方法对大量钢框架模型的抗倒塌储备能力进行分析,通过比较发现梁柱线刚度比和压弯构件的设计应力比是影响钢框架抗倒塌储备系数CMR最主要的两个因素。并对这些模型进行pushover分析,发现合理的梁柱线刚度比能很好地改善结构的超强和延性,而柱强度应力比只对超强影响显著;总结了钢框架二次设计的过程,并通过实例来验证了此方法的可行性。
CMR analysis methods proposed by ATC are used to analyze the collapse-prevention margin of the many steel frames.Through comparison,the paper presents that the linear stiffness ratio of beam to column and the design stress ratio of the flexure and compression component are the two major important factors affecting the steel frame with collapse-prevention margin ratio.Based on the pushover analysis of the model,it is found that the reasonable linear stiffness ratio of beam to column can greatly improve the super and ductility,but the column strength stress obviously impacts the super.Finally,the secondary process is summed up,and an example is used to verify the feasibility of this method.

引文

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