某常规岛厂房在地震火灾作用下的反应分析

英文篇名：Response analysis of a conventional island powerhouse under post-earthquake fire
中文刊名：建筑结构
英文刊名：Building Structure
作者：金靖 ; 张志谦 ; 陈适才
英文作者：Jin Jing ; Zhang Zhiqian ; Chen Shicai ; State Nuclear Electric Power Planning Design and Research Institute ; College of Architecture and Civil Engineering of Beijing University of Technology
中文关键词：地震次生火灾 ; 地震损伤 ; 薄弱部位 ; 连续性倒塌
英文关键词：post-earthquake fire ; earthquake damage ; weak part ; progressive collapse
出版日期：2015-05-25
机构：国核电力规划设计研究院;北京工业大学建筑工程学院;
年：2015
期：10
出版单位：建筑结构

摘要

为研究地震引发的次生火灾对常规岛厂房结构的作用和影响,利用ABAQUS软件预定义场和重启动分析功能,对一钢结构厂房在地震作用后的模型进一步进行热力耦合分析。通过分析结构在不同地震损伤以及火灾场景下的结构反应规律,得出了结构的薄弱部位,并与未考虑地震作用时结构的热力耦合分析结果进行了对比。分析结果表明,考虑地震作用后的钢结构在火灾下的破坏形态可发生改变,地震引发的次生火灾更容易造成结构的破坏甚至产生连续性倒塌。
In order to study the action and influence of post-earthquake fire to a conventional island powerhouse structure,coupled thermal-stress response of a steel structure plant model after earthquake was analyzed by ABAQUS with predefined field and restart function.The weak part of the structure was obtained through the reaction rules of the structure in different seismic damage states and fire cases,and the result was compared with coupled thermal-stress analysis of the structure without earthquake action.Analysis result reveals that failure patterns of steel structure under post-earthquake fire could change,and the post-earthquake fire may easily cause the failure even the progressive collapse of the structure.

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