Analysis of overall stability bearing capacity of single-layer shell structures under high temperature condition  

作　　者：BAI Yin ZHAI JianLei SHI YongJiu WANG YuanQing 

机构地区：[1]School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics [2]Department of Civil Engineering,Key Laboratory of Structural Engineering and Vibration of China Education Ministry,Tsinghua University

出　　处：《Chinese Science Bulletin》2013年第7期749-755,共7页

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51208019);the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091102120034)

摘　　要：Based upon nonlinear analysis theories for single-layer reticulated shells under fire conditions,more than 800 FEA models for four types of single-layer reticulated shells(K8,Geodesic,Schwedler,and Lamella) with different geometric parameters were set,and nonlinear finite element complete-process analysis under fire condition were conducted on the two typical cases,i.e.,global non-uniform temperature distribution and localized high temperature.By analyzing the calculation results for elasto-plastic stability bearing capacity,the practical calculation formulae for calculating elasto-plastic stability bearing capacity under fire condition were obtained.Based upon nonlinear analysis theories for single-layer reticulated shells under fire conditions, more than 800 FEA models for four types of single-layer reticulated shells （K8, Geodesic, Schwedler, and Lamella） with different geometric parameters were set, and nonlinear finite element complete-process analysis under fire condition were conducted on the two typical cases, i.e., global non-uniform temperature distribution and localized high temperature. By analyzing the calculation results for elasto- plastic stability bearing capacity, the practical calculation formulae for calculating elasto-plastic stability bearing capacity un- der fire condition were obtained.

关 键 词：单层网壳结构 承载力分析 高温条件 整体稳定 非线性有限元 弹塑性稳定 计算结果 稳定承载力 

分 类 号：TU356[建筑科学—结构工程] TU375.302