太阳辐射下钢板筒仓温度场与温度效应研究
|
摘要
综合使用光线追踪法和点盒位置判断理论,提出了一种高效的钢板筒仓太阳辐射阴影区计算方法,并通过试验验证了该方法的计算精度。分析了钢板筒仓加盖和不加盖、满仓和空仓时太阳辐射非均匀温度场的时空分布规律,其中不加盖空仓时的太阳辐射非均匀温度场对结构最为不利。不加盖空仓时钢板筒仓结构正温差温度效应最大,与不考虑太阳辐射均匀温度作用工况相比,最大温度变形、最大温度应力、支座最大径向反力分别增加了135%、85%、85%,支座环向反力从0k N增加到132 k N,建议在工程设计中合理考虑太阳辐射非均匀温度效应。
Based on the theory of ray tracing and point box position estimation,an efficient method to calculate the solar radiation shadow of steel silo is presented,and the calculation accuracy of the method is verified by experiments.The temporal and spatial distributions of the non-uniform temperature field of steel silo when the steel silo has lid or not and if the steel silo is full or empty has been analyzed. It is found that the solar radiation non uniform temperature field is the most disadvantageous when the steel silo is empty and has no lid. At the same time,the analysis results show the positive temperature effect is the most adverse when the steel silo is empty and has no lid. Compared with the condition without considering the solar radiation uniform temperature,the maximum temperature deformation has increased by135%,the maximum temperature stress has increased by 85%,the maximum support reaction in radial direction has increased by 85% and the maximum support reaction in peripheral direction has increased to 132 k N. It is suggested that the non-uniform temperature effect of steel silos should be considered in the design.
Based on the theory of ray tracing and point box position estimation,an efficient method to calculate the solar radiation shadow of steel silo is presented,and the calculation accuracy of the method is verified by experiments.The temporal and spatial distributions of the non-uniform temperature field of steel silo when the steel silo has lid or not and if the steel silo is full or empty has been analyzed. It is found that the solar radiation non uniform temperature field is the most disadvantageous when the steel silo is empty and has no lid. At the same time,the analysis results show the positive temperature effect is the most adverse when the steel silo is empty and has no lid. Compared with the condition without considering the solar radiation uniform temperature,the maximum temperature deformation has increased by135%,the maximum temperature stress has increased by 85%,the maximum support reaction in radial direction has increased by 85% and the maximum support reaction in peripheral direction has increased to 132 k N. It is suggested that the non-uniform temperature effect of steel silos should be considered in the design.
引文
[1]Reimbert M L,Reimbert A M.Silos theory and practice[M].Clausthal,Germany:Trans Tech Publications Inc,1976:1-7.
[2]滕锦光,赵阳.大型钢筒仓的结构行为与设计[J].土木工程学报,2001,34(4):46-55.(TENG Jinguang,ZHAO Yang.Structural behavior and design of large steel silos[J].China Civil Engineering Journal,2001,34(4):46-55.(in Chinese))
[3]ZHANG Pan,ZHAO Yang.Seismic behavior of steel silos considering granular material-structure interaction:research advances and natural vibration property analysis[J].Spatial Structures,2014,20(3):88-96.
[4]夏冬桃,徐礼华.环境温度作用对巨型贮煤筒仓的内力影响分析[J].工业建筑,2006,36(3):80-82.(XIA Dongtao,XU Lihua.Effects of temperature load on giant reinforced concrete coal silo[J].Industrial Construction,2006,36(3):80-82.(in Chinese))
[5]Gallego E,González-Montellano C,Ramírez A,Ayuga F.A simplified analytical procedure for assessing the worst patch load location on circular steel silos with corrugated walls[J].Engineering Structures,2011,33:1940-1954.
[6]Eugeniusz Hotala,Lukasz Skotny.Experimental investigations on the stability of stiffened cylindrical shells of steel silos[J].Journal of Constructional Steel Research,2014,96:81-94.
[7]Liu Hongbo,Chen Zhihua,Zhou Ting.Theoretical and experimental study on the temperature distribution of Hshaped steel members under solar radiation[J].Applied Thermal Engineering,2012,37:329-335.
[8]范重,王喆,唐杰.国家体育场大跨度钢结构温度场分析与合拢温度研究[J].建筑结构学报,2007,28(2):32-40.(FAN Zhong,WANG Zhe,TANG Jie.Analysis on temperature field and determination of temperature upon healing of large-span steel structure of the Nationnal Stadium[J].Journal of Building Structures,2007,28(2):32-34.(in Chinese))
[9]陈志华,肖骁,刘红波.太阳辐射作用下钢管温度计算简化方法[J].天津大学学报,2014,47(增刊1):1-7.(CHEN Zhihua,XIAO Xiao,LIU Hongbo.Simplified method for calculating temperature of steel tubes considering solar radiation[J].Journal of Tianjin University,2014,47(Suppl.1):1-7.(in Chinese))
[10]陈志华,陈滨滨,刘红波.钢结构常用涂料太阳辐射吸收系数试验研究[J].建筑结构学报,2014,35(5):81-87.(CHEN Zhihua,CHEN Binbin,LIU Hongbo.Experimental research on solar radiation absorptance of commonly used coatings for steel structures[J].Journal of Building Structures,2014,35(5):81-87.(in Chinese))
[2]滕锦光,赵阳.大型钢筒仓的结构行为与设计[J].土木工程学报,2001,34(4):46-55.(TENG Jinguang,ZHAO Yang.Structural behavior and design of large steel silos[J].China Civil Engineering Journal,2001,34(4):46-55.(in Chinese))
[3]ZHANG Pan,ZHAO Yang.Seismic behavior of steel silos considering granular material-structure interaction:research advances and natural vibration property analysis[J].Spatial Structures,2014,20(3):88-96.
[4]夏冬桃,徐礼华.环境温度作用对巨型贮煤筒仓的内力影响分析[J].工业建筑,2006,36(3):80-82.(XIA Dongtao,XU Lihua.Effects of temperature load on giant reinforced concrete coal silo[J].Industrial Construction,2006,36(3):80-82.(in Chinese))
[5]Gallego E,González-Montellano C,Ramírez A,Ayuga F.A simplified analytical procedure for assessing the worst patch load location on circular steel silos with corrugated walls[J].Engineering Structures,2011,33:1940-1954.
[6]Eugeniusz Hotala,Lukasz Skotny.Experimental investigations on the stability of stiffened cylindrical shells of steel silos[J].Journal of Constructional Steel Research,2014,96:81-94.
[7]Liu Hongbo,Chen Zhihua,Zhou Ting.Theoretical and experimental study on the temperature distribution of Hshaped steel members under solar radiation[J].Applied Thermal Engineering,2012,37:329-335.
[8]范重,王喆,唐杰.国家体育场大跨度钢结构温度场分析与合拢温度研究[J].建筑结构学报,2007,28(2):32-40.(FAN Zhong,WANG Zhe,TANG Jie.Analysis on temperature field and determination of temperature upon healing of large-span steel structure of the Nationnal Stadium[J].Journal of Building Structures,2007,28(2):32-34.(in Chinese))
[9]陈志华,肖骁,刘红波.太阳辐射作用下钢管温度计算简化方法[J].天津大学学报,2014,47(增刊1):1-7.(CHEN Zhihua,XIAO Xiao,LIU Hongbo.Simplified method for calculating temperature of steel tubes considering solar radiation[J].Journal of Tianjin University,2014,47(Suppl.1):1-7.(in Chinese))
[10]陈志华,陈滨滨,刘红波.钢结构常用涂料太阳辐射吸收系数试验研究[J].建筑结构学报,2014,35(5):81-87.(CHEN Zhihua,CHEN Binbin,LIU Hongbo.Experimental research on solar radiation absorptance of commonly used coatings for steel structures[J].Journal of Building Structures,2014,35(5):81-87.(in Chinese))