温度作用对钢筒仓结构影响的有限元分析  

The finite element analysis ot the steel silo structures under the temperature effect

作　　者：陈辉[1] 袁海庆[1] 李盛[1] 刘文龙[1] 高翔[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院

出　　处：《四川建筑科学研究》2006年第6期47-50,共4页Sichuan Building Science

摘　　要：利用大型有限元分析软件ANSYS建立了一个高22.2 m、直径15 m的钢筒仓三维空间模型。在日照作用下,筒仓表面温度由20℃升到50℃时,对此模型进行了瞬态热分析,求解出了温度场分布,并将其作为热荷载施加于结构中进行有限元计算,得出筒壁的温度应力分布规律。分析结果显示,筒仓薄壳由于温度变化而产生的变形在受到外来阻力约束时,会导致温度应力产生,工程设计中应充分考虑此变形对结构的影响。The text creates a steel silo 3D model which is 22. 2 m high and has a diameter of 15 m by using the FE software ANSYS. Under the sunlight, when the surface temperature of silo ascends from 20℃ to 50℃ , carry through the transient thermal analysis on the model ; get the distribution of temperature field, which is used as the thermal loads to apply on the FE model to get the disciplinarian of temperature stress on the wall of silo. The analysis result shows that the thin-wall of silo brings temperature stress, when it is constrained by exterior resistance, which is due to the change of temperature, and the distortion effect on the structures should be pay attention to in engineering design.

关 键 词：钢筒仓 温度应力 有限元分析 ANSYS 

分 类 号：TU111[建筑科学—建筑理论]