建筑钢结构进展2025，Vol.27Issue(12)：41-50,10.DOI:10.13969/j.jzgjgjz.20240715001
高原日照辐射对大跨异形钢结构温度场的影响研究
Study on the Influence of Solar Radiation on the Temperature Field of Large-Span Special-Shaped Steel Structures in High-Altitude Areas
摘要
Abstract
In order to study the distribution patterns of solar temperature field for large-scale spatial structures in plateau areas,based on measured meteorological parameters of plateau areas and heat transfer theories,the boundary condition calculation method for simulating the solar temperature field in plateaus was elucidated.Taking a large-span special-shaped steel structure as an engineering background,a transient temperature field calculation program considering inter-element occlusion effects was developed using ray tracing algorithms.By combining with structural temperature monitoring data,the temporal variation patterns and spatial distribution characteristics of the solar temperature field in the structure were analyzed.The results show that the shadow recognition method based on ray tracing can accurately reflect the actual shadow distribution of the structure,and the simulated values of the structure's solar temperature field are basically consistent with the monitored values.The shadow effect has a significant impact on the time-varying and non-uniformity of the structure's temperature distribution,with a maximum cooling rate of 33.5%in the shadowed area.At 14 o'clock,the temperature in the shadowed area on the surface of the rod member decreased by 53.7%compared to the direct sunlight area.For the whole structure,the occlusion effects between elements reduce the temperature difference between the sun-facing and back-facing sides of the structure.This effect significantly influences the distribution of structural temperatures and cannot be ignored in simulating solar temperature fields.The findings of this study provide a basis and reference for researching the solar temperature field and temperature effects of large-scale spatial structures in high-altitude regions.关键词
大型空间结构/高原地区/非均匀温度场/边界条件/日照阴影/光线追踪算法/杆件间遮蔽效应Key words
large-scale spatial structure/plateau area/non-uniform temperature field/boundary condition/sunlight shadow/ray tracing algorithm/inter-element occlusion effect分类
建筑与水利引用本文复制引用
古松,蒋广,林晓宇,吕勇康,顾颖..高原日照辐射对大跨异形钢结构温度场的影响研究[J].建筑钢结构进展,2025,27(12):41-50,10.基金项目
国家自然科学基金(52108385,51708467) （52108385,51708467）
