Experimental investigation on the thermal behavior of two typical stainless steel roof systems

The Structural Design of Tall and Special Buildings Pub Date : 2024-05-06 DOI:10.1002/tal.2121

Cholap Chong, Zhiyong Xin, Mingming Wang, Bao Chen, Jinghao Liang

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Abstract

SummaryUnder long‐term exposure to solar radiation and temperature difference, metal roof systems produce a noticeable thermal behavior. The thermal behavior experiment of two typical metal roof systems in engineering was studied. The temperature stress and displacement of the two typical metal roof systems under different influencing factors are compared and analyzed. The results show that the thermal behavior of the stainless steel roof system is significant. The peak stress accounts for about 69.9% of the stainless steel yield strength, and the peak displacement accounts for 3/3500 of the slab span. The loading rate and temperature difference greatly influence the thermal behavior of the two typical roof systems. The maximum influence of temperature difference and loading rate on the thermal behavior is 77.8% and 67.3%, respectively. The holding temperature time has a minor influence on the thermal behavior of the two typical roof systems, and the maximum influence range is less than 7%. The research conclusions provide a valuable reference for the thermal design of metal roof systems.

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两种典型不锈钢屋顶系统热行为的实验研究

摘要在太阳辐射和温差的长期作用下，金属屋顶系统会产生明显的热行为。研究了工程中两种典型金属屋面系统的热行为实验。对比分析了两种典型金属屋顶系统在不同影响因素下的温度应力和位移。结果表明，不锈钢屋顶系统的热行为显著。峰值应力约占不锈钢屈服强度的 69.9%，峰值位移约占板跨的 3/3500。荷载率和温差对两种典型屋顶系统的热行为影响很大。温差和加载速率对热行为的最大影响分别为 77.8% 和 67.3%。保温时间对两种典型屋顶系统的热行为影响较小，最大影响范围小于 7%。研究结论为金属屋顶系统的热设计提供了有价值的参考。

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The Structural Design of Tall and Special Buildings

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