Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2022, Vol. 58 ›› Issue (4): 591-596.DOI: 10.13209/j.0479-8023.2021.113

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A Reduced-order Sub-region Model for Structural Damage Analysis under Sudden Disasters

HAN Xudong, SUN Shuli†   

  1. Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871
  • Received:2021-07-23 Revised:2021-09-01 Online:2022-07-20 Published:2022-08-08
  • Contact: SUN Shuli, E-mail: sunsl(at)mech.pku.edu.cn

突发灾害下建筑结构破坏分析的子区域降阶模型

韩旭东, 孙树立†   

  1. 北京大学工学院力学与工程科学系, 北京 100871
  • 通讯作者: 孙树立, E-mail: sunsl(at)mech.pku.edu.cn
  • 基金资助:
    国家重点研发计划(2018YFC0809700, 2017YFC0803300)资助

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Abstract:

 A simplified order-reduced sub-region model and the analysis method are proposed to analyze structural damage caused by local failure under sudden disasters. The method firstly divides a complex building into sub-regions. Secondly it evaluates the failure degree of sub-regions according to the state of internal components, then analyzes the failure process from macro regional perspective. Finally it summarizes the law of collapse evolution so as to provide guidance for emergency management. 

Key words:  disaster emergency, local failure, progressive damage, sub-region model 

摘要：

 针对突发灾害下局部破坏引发的结构破坏问题, 提出一种简化的子区域降阶模型及分析方法。首先对复杂建筑结构进行子区域划分, 然后按照内部构件状态评估子区域的破坏失效程度, 最后从子区域宏观角度分析破坏过程, 归纳演化规律, 为灾害应急管理提供理论指导。

关键词: 灾害应急, 局部破坏, 连续破坏, 子区域模型 

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