建筑结构学报2011，Vol.32Issue(11)：1-8,8.
基于能量方法的RC框架结构连续倒塌抗力需求分析Ⅰ：梁机制
Progressive collapse resistance demand of RC frame structures based on energy method I： beam mechanism
摘要
Abstract
The key issue of the progressive collapse（PC） design method is to determine the PC resistance demand of the structure with removed members due to accidental action.The empirical parameters that are adopted in the design methods of the existing codes are difficult to reasonably consider the effect of nonlinear and dynamic behavior during the PC process of building structures due to the weak theoretical basis.A theoretical framework for the PC resistance demand analysis of RC frame structures was established based on the energy conservation principle.In this framework,the relationship between the nonlinear dynamic and linear static PC resistance demands for RC frame structures with beam mechanism to resist PC was derived.The influences of nonlinear and dynamic behaviors were comprehensively considered so that the nonlinear dynamic PC resistance demands could obtained by using the linear static analysis.At last,the empirical parameters in existing codes were discussed and the proposed demand relationship based on the energy conservation principle was validated through numerical examples.关键词
RC框架结构/抗连续倒塌/梁机制/抗力需求/能量方法Key words
RC frame structure/progressive collapse/beam mechanism/resistance demand/energy conservation principle分类
建筑与水利引用本文复制引用
李易,叶列平,陆新征..基于能量方法的RC框架结构连续倒塌抗力需求分析Ⅰ：梁机制[J].建筑结构学报,2011,32(11):1-8,8.基金项目
国家科技支撑计划项目 （）
国家重点基础研究发展计划（973）项目 （）
教育部新世纪优秀人才支持计划项目 （）
