露天日照条件下钢结构构件的温度场分析  

ANALYSIS OF THE TEMPERATURE FIELD OF STEEL MEMBERS IN SUNSHINE

作　　者：林错错[1] 王元清[1] 石永久[1] 

机构地区：[1]清华大学土木工程系土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《钢结构》2010年第8期38-43,31,共7页Steel Construction

基　　金：KGE研究基金资助项目(200802)

摘　　要：在钢结构设计中,分析结构温度效应、确定施工合拢温度的难点在于确定温度场分布。为了提出一种计算露天日照条件下钢结构构件温度场分布的方法,采用CFD数值模拟,运用Gambit软件进行建模,Fluent软件进行有限元求解,计算出工字型、箱形构件在北京2009年5月12日各个测温时刻的温度场。通过数值模拟计算结果与相应试验测温数据的对比,验证了所提分析方法的有效性。通过算例,分析讨论了影响钢结构构件温度场的各个因素,为工程设计提供参考。In the design of steel structure,it＇s difficult to determine the distribution of temperature,which is the base to calculate the effect of temperature and determine the temperature of closure operation.For proposing a method of calculating the temperature field of steel members in sunshine,computation fluid dynamics（CFD） method is employed to calculate the temperature field of the I-section and box specimens at every measuring time in Beijing on May 12th 2009,using the Gambit software to model and using the Fluent software to do finite element analysis.The effectiveness of the performed CFD was verified by the comparison between the CFD results and the test results.Influencing factors of the temperature field of steel members were analyzed,which is helpful to the design of steel structure.

关 键 词：钢结构构件 日照 温度场 CFD方法 Fluent软件 

分 类 号：TU391[建筑科学—结构工程]