防灾减灾工程学报2025，Vol.45Issue(2)：271-281,11.DOI:10.13409/j.cnki.jdpme.20241114002
爆炸荷载下基于子结构的RC框架抗连续倒塌分析
A Substructure Based Analysis of Progressive Collapse Resistance for RC Frame Structures Under Blast Loading
摘要
Abstract
This study investigated the blast damage range and computational efficiency of progressive collapse analysis for reinforced concrete(RC)frame structures by combining investigations of blast damage to building structures with refined numerical simulations.The validity of the RC frame struc-ture model based on LS-DYNA was verified,and a substructure-based method for collapse resistance analysis of RC frame structure under blast loading was proposed,including selecting substructures from blast-damaged regions and properly calculating their boundary conditions.By conducting collapse resistance analysis on a typical 5-story RC frame structure under blast loading using full-structure and the proposed substructure methods,the effectiveness and efficiency of the proposed substructure meth-od were examined.The results showed that the proposed substructure method could accurately predict the damage range and collapse behavior of RC frame structures under given blast loading,while reduc-ing computational time by 72.7%compared with the full-structure method.关键词
爆炸荷载/钢筋混凝土子结构/数值模型/连续倒塌/计算效率Key words
blast loading/reinforced concrete substructure/numerical model/progressive collapse/computational efficiency分类
建筑与水利引用本文复制引用
蒋认,师燕超,黄宏,张季,董晶亮,庄海洋..爆炸荷载下基于子结构的RC框架抗连续倒塌分析[J].防灾减灾工程学报,2025,45(2):271-281,11.基金项目
江西省自然科学基金(20242BAB25307)、国家自然科学基金(52468070)资助 （20242BAB25307）
