基于ABAQUS的钢筋混凝土框架火灾分析方法  

Method Analyzing Reinforced Concrete Frames in fire Based on ABAQUS

作　　者：王广勇[1,2] 薛素铎[2] 邱林波[2] 

机构地区：[1]清华大学土木水利学院,北京100084 [2]北京工业大学建筑工程学院,北京100124

出　　处：《北京工业大学学报》2010年第3期316-320,共5页Journal of Beijing University of Technology

基　　金：北京市自然科学基金资助项目(8082004)

摘　　要：提出了利用梁单元进行钢筋混凝土框架结构火灾分析的方法.以ABAQUS为基础,通过编制高温下混凝土材料子程序和用户自定义场变量子程序,确定了钢筋混凝土梁柱截面混凝土和钢筋的温度,并进一步确定了高温下混凝土的增量应力应变关系.计算结果与ABQUS混凝土模型的对比表明本文方法合理.A method analyzing reinforced concrete frames in fire by using beam element is presented in this paper. The temperature of the concrete and steel rebars of a reinforced concrete element cross-section is exactly decided by coding a user material subroutine and a user predefined field subroutine, and then the incremental strain-stress relation of concrete at elevated temperatures is determined. The comparison between the calculated results and ABAQUS concrete model results shows that the presented method is reasonable.

关 键 词：钢筋混凝土框架 用户材料子程序 增量应力应变关系 火灾 

分 类 号：TU375.4[建筑科学—结构工程]