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为了得到露天日照条件下钢结构构件温度、太阳辐射升温的实测数据以及变化规律,对工字形、箱形两种截面的钢结构试件进行了温度试验。试验从2009年4月下半月至9月上半月对各个试件进行了连续的温度测量记录,得到了每一天日间试件上各测点在各个测温时刻的温度数据以及环境温度数据。通过整理,得到了两种截面试件的各块钢板在每半个月内的平均日间温度-时间变化规律和在每半个月最高温度日内的日间温度-时间变化规律。通过统计数据的分析对比得出结论:试件整体的最高温度可达56℃,最大温升可达16℃;单块钢板的最高温度可达60℃,最大温升可达22℃;天气状况对试件的辐射升温影响很大;钢板沿厚度方向温度梯度可以忽略;日间试件的温度场分布不均匀,各钢板间最大温差可达10℃,相邻测点间最大温差可达5℃。
In order to obtain the measured data of the temperature of the steel structure components and the solar radiation temperature rise under the open sun conditions, the temperature test was carried out on the steel structure specimens of the I-shaped and the box-shaped sections. The test recorded the temperature of each specimen continuously from the second half of April to the first half of September, and obtained the temperature data and the ambient temperature data of each measuring point at each measuring point during the day. Through finishing, the average daytime temperature-time variation of each steel plate in two cross-section specimens and the daytime temperature-time variation in each half month maximum temperature day were obtained. The statistical analysis shows that the maximum temperature of the specimen can reach 56 ℃ and the maximum temperature can reach 16 ℃. The maximum temperature of a single steel plate reaches 60 ℃ and the maximum temperature can reach 22 ℃. The temperature gradient of the steel plate along the thickness direction can be neglected; the temperature field of the test piece during the daytime is unevenly distributed, the maximum temperature difference between the steel plates can reach 10 ° C, and the maximum temperature difference between adjacent measuring points can reach 5 ℃.