摘要
归纳总结汶川地震的典型受损建筑特征及采用的救援技术。应用ANSYS有限元方法计算施加顶撑荷载前、后震损建筑在地震荷载作用下的反应,数值模拟顶撑位移作用下的受损建筑。分析结果表明:施加顶撑后结构的抗连续倒塌能力显著提高;顶撑距离过大,可能拉断构件或发生剪切破坏,故顶撑位移应为可进行救援的最小位移。
The character of earthquake damaged structure and typical rescue technique in Wenchuan earthquake were summarized.Using ANSYS finite element analysis,seismic response of damaged models was analysed and the shoring displacement was numerically simulated.The results showed that shoring method can improve the progressive collapse behavior greatly;when the shoring displacement is too big,the member may be pulled off,or have shear stress damage,so the shoring displacement should be the minimum distance for rescuing.
出处
《消防科学与技术》
CAS
北大核心
2012年第4期404-407,共4页
Fire Science and Technology
基金
公安部应用创新项目"建筑倒塌事故救援中局部扰动诱发结构连续倒塌问题研究"(2008YYCXWJXY119)
关键词
顶撑法
数值模拟
震损建筑
连续倒塌
shoring method
numerical simulation
earthquake damaged structure
progressive collapse
