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对于有大型室外构件或大面积透光性屋面的大跨钢结构,在时变太阳强烈辐射作用下,结构经历的温度效应实质是在辐射-热-流多物理场耦合作用下的非均匀时变温度效应,往往会在结构中引起较大的温度变形和温度应力,成为结构的控制荷载之一。从钢材表面太阳辐射吸收系数、太阳辐射下钢结构温度实测以及数值模拟方法、典型结构形式和工程的太阳辐射非均匀温度效应研究等方面,总结和分析了空间结构太阳辐射非均匀温度问题的研究进展,提出低吸收高反射的新型涂料研发、结构太阳辐射非均匀温度作用简化模型、地基-基础-混凝土结构-钢结构协同太阳辐射非均匀温度效应的精细化研究等3项亟待解决的关键课题,为进一步研究空间结构太阳辐射非均匀温度效应提供了一定的思路和参考。
For large-span steel structures with large outdoor components or large-area translucent roofs, under the strong solar radiation, the temperature effect experienced by the structure is essentially non-uniform under the coupled coupling of radiation-heat-flow multiphysics Variable temperature effects, tend to cause greater temperature deformation and temperature stress in the structure, as one of the structural control load. From the solar radiation absorption coefficient of the steel surface, the measured temperature of the steel structure under the solar radiation and numerical simulation methods, the typical structural forms and engineering non-uniform temperature effects of solar radiation, the paper summarizes and analyzes the non-uniform temperature of the solar radiation in the space structure This paper presents three key issues to be solved, such as the research and development of new coatings with low absorption and high reflection, the non-uniform temperature effect of structured solar radiation, and the study of the fine foundation of the non-uniform temperature effect of the foundation-concrete-steel structure coordination and solar radiation , Which provided some ideas and references for further study on the non-uniform temperature effect of solar radiation in space structure.