直立锁边不锈钢屋面系统温度效应试验
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TU393

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南方电网公司科技项目(037700KK52190026)


Experiment study on the temperature field effect of standing seaming stainless steel roof system
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    摘要:

    金属屋面系统常用于各种重要的地标建筑中,经常受到周期性的太阳辐射、温度变化和其他环境影响。本文针对直立锁边445J2铁素体不锈钢屋面系统开展温度效应研究。考虑不同约束条件和温度等因素,分析屋面系统的力学性能。试验结果表明,温度作用下,直立锁边不锈钢屋面系统存在应力集中和热膨胀位移现象。屋面系统应力和位移随着温度增加而变大,温度每增加1 ℃应力和位移最大增加1.9 MPa。屋面板的水平位移要明显大于竖向位移,且在一端固定约束条件下水平位移最大约9.19 mm。板面应力随约束条件增强增加幅度最大分别为41.7%、30.6%。

    Abstract:

    Metal roof systems are often used in various important landmark buildings, and are often affected by periodic solar radiation, temperature changes and other environmental influences. In this paper, the temperature effect of standing seaming 445J2 ultrapure ferritic stainless steel roofing system is studied. Experiments were carried out under different constraints and temperature to analyze the mechanical properties of the roof system. The test results show that under the action of temperature, the standing seaming stainless steel roof system has obvious stress concentration and thermal expansion displacement. The stress and displacement of roof system increase with the increase of temperature, and the maximum increase of stress and displacement is 1.9 MPa for every 1 °C increase of temperature. The horizontal displacement of the roof slab is significantly greater than the vertical displacement, and the maximum horizontal displacement is about 9.19 mm under the fixed constraint condition at one end. The stress of the slab surface increases significantly with the increase of constraint conditions, increasing by 41.7% and 30.6%, respectively.

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吴小蕙,王彦峰,李嘉杰,等. 直立锁边不锈钢屋面系统温度效应试验[J]. 科学技术与工程, 2022, 22(1): 331-336.
Wu Xiaohui, Wang Yanfeng, Li Jiajie, et al. Experiment study on the temperature field effect of standing seaming stainless steel roof system[J]. Science Technology and Engineering,2022,22(1):331-336.

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  • 收稿日期:2021-04-09
  • 最后修改日期:2021-10-15
  • 录用日期:2021-09-03
  • 在线发布日期: 2022-01-11
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