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Wind tunnel test of snow loads on a stepped flat roof using different granular materials

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  • Xuanyi Zhou
  • Jinhai Hu
  • Ming Gu

Abstract

An accurate prediction of wind-induced redistribution of snow load on roof surfaces is vital to structural design. To represent the pattern of snow distribution caused by snowdrift in wind tunnel test, appropriate modeling particles should be selected. The particle density is the key to determine the values of several important similarity parameters. In this study, the redistribution of snow load on a stepped flat roof was simulated by means of wind tunnel test using low-density saw wood ash, medium-density polyfoam, and high-density silica sand, respectively. To ensure the comparability of the test results of the three modeling particles, the wind tunnel test results for comparison were performed under almost the same conditions of dimensionless wind velocity and dimensionless time. Then, the results of the present study were compared with those from field observations of prototypes in previous studies. The effects of wind duration, wind velocity, and roof span on the redistribution of snow on roof surfaces were investigated. The characteristics of erosion/deposition range and the location of maximum quantities of erosion/deposition under independent effects of wind duration, wind velocity, and roof span were also studied. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Xuanyi Zhou & Jinhai Hu & Ming Gu, 2014. "Wind tunnel test of snow loads on a stepped flat roof using different granular materials," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 74(3), pages 1629-1648, December.
    • Handle: RePEc:spr:nathaz:v:74:y:2014:i:3:p:1629-1648
    DOI: 10.1007/s11069-014-1296-z
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    Cited by:

    1. Xuetao Yu & Mengke Liu & Junyu Wang & Qingkuan Liu & Jianqing Bu, 2022. "Statistical characteristics of the spatial distribution of wind and snow in the Xinjiang Uygur Autonomous Region," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 111(2), pages 1977-2009, March.
    2. Zhenggang Cao & Mengmeng Liu & Pengcheng Wu, 2019. "Experiment Investigation and Numerical Simulation of Snowdrift on a Typical Large-Span Retractable Roof," Complexity, Hindawi, vol. 2019, pages 1-14, December.
    3. Jianshuo Wang & Hongbo Liu & Zhihua Chen & Kejian Ma, 2020. "Wind tunnel test of wind-induced snowdrift on stepped flat roofs during snowfall," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 104(1), pages 731-752, October.

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