Analysis on progressive collapse resistance of long complicated isolated structures
Du Yongfeng1 Zhu Xiang2 Lu Xinzheng3 Song Xiang1 Tan Zhihong1
1. Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, China
2. Department of Civil Engineering, Shanxi University, Taiyuan 030013, China
3. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China
To study the progressive collapse resistance of the long period complicated isolated structure, an actual hospital building was analyzed and discussed comprehensively. Two finite element models, viz. refined 3D FE model with slab and simplified 3D FE model without slab, were established for this hospital building. Nonlinear dynamic alternate path method was performed for the two models to investigate the progressive collapse resistance. The results show that the progressive collapse does not occur for the case of removing only one vertical structural member of the long period complicated isolated structure. The corner column has big influence on this isolated structures’ progressive collapse. For the case of removing two vertical structural members, the simplified 3D FE model without slab collapsed progressively, while the refined 3D FE model with slab stay standing. So the simplified 3D FE model without considering the effect of slab may lead to too conservative results. The effect of slab should be considered when studying the structures progressive collapse resistance.
杜永峰 朱翔 陆新征 宋翔 谈志鸿. 超长复杂隔震结构抗连续倒塌性能分析[J]. 土木工程学报, 2016, 49(S1): 90-95.
Du Yongfeng Zhu Xiang Lu Xinzheng Song Xiang Tan Zhihong. Analysis on progressive collapse resistance of long complicated isolated structures. 土木工程学报, 2016, 49(S1): 90-95.
