局部高温对结构Pushover分析的影响  

Influence of Local High Temperature on Pushover Analysis of Structures

作　　者：兰涛 丁敏[3] 庄金钊[3] 秦广冲 乔海洋[2] 姚亚明 张艳 LAN Tao;DING Min;ZHUANG Jinzhao;QIN Guangchong;QIAO Haiyang;YAO Yaming;ZHANG Yan(CSIC International Engineering Co.,Ltd.,Beijing 100121,China;Tianjin Xingang Shipbuilding Heavy Industry Co.,Ltd.,Tianjin 300452,China;College of Water Resources and Civil Engineering,China Agricultural University,Beijing 100083,China)

机构地区：[1]中国船舶重工集团国际工程有限公司,北京100121 [2]天津新港船舶重工有限责任公司,天津300452 [3]中国农业大学水利与土木工程学院,北京100083

出　　处：《工业建筑》2022年第7期93-97,共5页Industrial Construction

基　　金：国家自然科学基金项目(51279206);中国船舶重工集团科技创新与研发项目(201815k);首规委支持科研基金项目(2017-016)。

摘　　要：为研究火灾局部高温对高层建筑结构Pushover分析的影响,以钢-混凝土混合结构为研究对象,将侧向荷载以均匀分布的形式考虑,采用ABAQUS有限元软件建立数值模型,进行结构弹塑性响应分析,同时对比不同温度作用对分析结果的影响。研究结果表明:随着局部高温作用温度的升高,结构顶点位移和层间位移相对误差呈现逐渐增大的趋势,局部高温对结构Pushover分析结果有显著影响。研究结果为降低局部高温和侧向荷载同时作用给结构带来的破坏提供了参考。In order to study the influence of fire local high temperature on the Pushover analysis of high-rise building structures,the steel-concrete composite structure was taken as the research object,the lateral load was considered in the form of uniform distribution,and the numerical model was established by using ABAQUS finite element software to analyze the structural elastic-plastic response and compare the effects of different temperature effects on the analysis results.The results showed that with the increase of the local high temperature,the relative errors of the top displacement and interlayer displacement of the structure were gradually increasing,and the local high temperature had a significant effect on the Pushover analysis results of the structure.The research results could provide a reference for reducing the damage to the structure caused by the simultaneous action of local high temperature and lateral load.

关 键 词：PUSHOVER分析 高温 顶点位移 层间位移 

分 类 号：TU973[建筑科学—结构工程]