Numerical Simulation for Progressive Collapse and Protection of a Multi-storey Building Due to an Explosion in Its Basement

摘要：

　　The progressive collapse of a multi-story building and its protective effect with aluminum foam under an explosion in its basement are numerically investigated in this paper.The three-dimensional coupling model composed of a multi-story frame structure with a basement and the surround soil is modeled using ANSYS/LS-DYNA.The progressive collapse of the entire structure under explosive impact and the protective effect of the aluminum foam are simulated using the proposed three-stage simulation method (TSSM).The result shows that, the aluminum foam as a protective layer can reduce the impact effects very well, and then can prevent progressive collapse effectively.The same model is also simulated by direct simulation method (DSM) and altemative load path method (ALPM).By comparison with the two methods, the TSSM is illustrated practical, accurate and economic for the analysis of progressive collapse.

关键词： Progressive collapse Blast load Basement Soil-structure dynamic interaction Aluminum foam

作者: Li Tian Zailong Li

作者单位: School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coast Civil St School of Civil Engineering,Tianjin University,Tianjin 300072,China

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 1034-1038

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）