波纹侧板-方钢管混凝土框架子结构抗连续倒塌性能模拟  

Analysis of progressive collapse of frame substructure with corrugated plate-square concrete filled steel tubular

作　　者：蒋俊玲 张祥 柯长仁 Jiang Jun-ling;Zhang Xiang;Ke Chang-ren(College of Civil Engineering and Environment,Hubei University of Technology,Wuhan 430068,China;Shanghai Electric Matechstone Engineering Group Co.LTD,Shanghai 200333,China)

机构地区：[1]湖北工业大学土木建筑与环境学院,湖北武汉430068 [2]上海电气研砼建筑科技集团有限公司,上海200333

出　　处：《工程抗震与加固改造》2023年第6期105-114,共10页Earthquake Resistant Engineering and Retrofitting

摘　　要：为了研究波纹侧板方钢管混凝土平面框架子结构抗连续倒塌的性能,选用双半跨单柱的平面子结构作为分析对象,基于ABAQUS/Explicit模块,引入了钢材的断裂准则,以显示准静态分析方法对结构进行拟静力计算,选取不同几何与物理参数,研究中柱失效工况下中柱位移-抗力曲线。研究表明,子结构的抗力-中柱失效位移(N-Δ)曲线有5个阶段:梁机制阶段、转换阶段、悬链线阶段、破坏阶段Ⅰ和破坏阶段Ⅱ。通过采用不同的参数进行分析,发现钢材强度等级和梁翼缘厚度对子结构的倒塌能力与延性的影响较为明显,工程中应该给予重视。In order to research the performance of frame substructure with corrugated plate-square concrete filled steel tubular against continuous collapse,the object of analysis is a plane frame substructure with double half span and single column,ABAQUS/Explicit module is used,the static force of the structure is calculated by quasi-static analysis method,different geometric and physical parameters are selected,the displacement-bearing capacity curve of middle column failure is reserched.The results show that,the displacementbearing capacity(N-Δ)curve of substructure has five stages:beam mechanism stage,transformation mechanismstage,catenary action stage,failure phase stageⅠand failure phase stageⅡ.Through the analysis of different parameters,it is found that steel strength grade and beam flange thickness have obvious influence on the collapse resistance and ductility of substructures,which should be paid more attention in engineering.

关 键 词：连续倒塌 ABAQUS 钢管混凝土 准静态分析 参数分析 

分 类 号：TU375[建筑科学—结构工程]