变壁厚钢筒仓在太阳辐射下结构热响应研究

Structural Thermal Response of Steel Silo with Variable Wall Thickness under Solar Radiation

以某实际工程中的钢筒仓为研究对象,分析其在太阳辐射下的结构响应。先应用ANSYS APDL语言编制壳体结构在太阳辐射作用下温度场的分析程序,研究变壁厚壳体结构在辐射作用下的温度场分布,并分析辐射参数对温度场的影响。然后以不同太阳辐射下壳体结构的温度场为边界条件,基于ANSYS通用有限元平台构建热-结构耦合分析模型,探究钢筒仓在空仓和满仓两种工况下壳体结构的应力场分布。最后通过壳体结构应力场的分析结果,提出太阳辐射作用下温度应力最大区域,即钢筒仓薄壁壳体与顶部桁架连接部位及与混凝土基础连接部位的设计建议。

Taking the steel silo in a practical project as the research object,the structural response of the silo under solar radiation is analyzed thoroughly.Firstly,the temperature field analysis progran of shell structure under solar radiation is complied by using ANSYS APDL language,the temperature field distribution of shell structure with variable wall thickness under radiation is studied,and the influence of radiation parameters on temperature field is analyzed.Then,taking the temperature field of the shell structure under different solar radiation as the boundary condition,a thermal-structural coupling analysis model is constructed based on the ANSYS general finite element platform to explore the stress field distribution of the shell structure of the steel silo under two working conditions:empty silo and full silo.Finally,based on the analysis results of the stress field of the shell structure,the design suggestions are put forward for the maximum temperature stress area under the action of solar radiation,that is,the connection between the thin-walled shell of the steel silo and the top truss and the connection with the concrete foundation.