基于地震损伤次生火灾概率研究  

Study on the Probability of Secondary Fire Based on Earthquake Damage

作　　者：李承玥 王宪杰 胡彪 王思文 赵颖 LI Cheng-yue;WANG Xian-jie;HU Biao;WANG Si-wen;ZHAO Ying(School of Architecture and Urban Planning, Yunnan University, Kunming 650500, China)

机构地区：[1]云南大学建筑与规划学院,昆明650504

出　　处：《科学技术与工程》2021年第18期7711-7716,共6页Science Technology and Engineering

基　　金：云南省教育厅科学研究基金(2020Y0020)。

摘　　要：地震的发生会破坏原有的自然平衡和社会稳定,易引起一系列二次破坏,这种破坏在空间上和时间上可能比地震本身更具危害性。其中,火灾是建筑物主要面临的地震次生灾害之一。云南大学新校区地处昆明市呈贡区,位于小江断裂带和普渡河断裂带之间,属地震多发区,且学校内部建有化学实验室和食堂,地震发生后极易引发次生火灾。为了研究校园区域地震次生火灾的发生率,通过MATLAB程序调用SAP2000对一幢RC框架结构进行非线性时程分析,基于Park-Ang双参数损伤模型求解结构在不同强度等级地震作用下的损伤D值,并结合实地调研构建适用于不同使用功能建筑的次生火灾起火概率模型,为云南大学震后火灾救援工作和基于性能的抗震防火设计提供参考。The occurrence of earthquake will destroy the original natural balance and social stability,which is easy to cause a series of secondary damage,this damage may be more harmful than the earthquake itself in space and time.Among them,fire is one of the main secondary disasters of buildings.The new campus of Yunnan University is located in Chenggong District of Kunming,between the Xiao-jiang Fault Zone and the Pu-du River Fault Zone,which is an earthquake prone area,and there are many chemical laboratories and canteens inside the campus,which can easily cause secondary fire after the earthquake.In order to study the occurrence rate of secondary fire in campus area,SAP2000 was used to analyze the nonlinear time history of the structure through MATLAB program,and based on the Park-Ang dual-parameter damage model,the damage D value of the structure under the action of earthquakes of different strength levels was solved,and combined with field investigations,a secondary fire probability model suitable for different functional buildings was constructed.The results provide a reference for Yunnan University's post-earthquake fire rescue work and performance-based seismic and fire protection design.

关 键 词：地震次生火灾 Park-Ang损伤模型 滞回耗能 极限位移 SAP2000 

分 类 号：TU375.4[建筑科学—结构工程]