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作者:

Yanli, He (Yanli, He.) | Xiaolin, Yan (Xiaolin, Yan.) | Xiongyan, Li (Xiongyan, Li.)

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EI Scopus

摘要:

The air supported membrane structure is a typical nonlinear flexible long-span space structure, the wind-induced drift and the resulting accumulation and distribution of snow particles on the structure may be the primary design concern among all loads in heavy-snowfall region. Thus, an accurate prediction of snow distribution on membrane surface is vital to structural design. A numerical simulation method is used to estimate snowdrift in this paper. Based on Euler-Euler method in multi-phase flow theory, this numerical model adopted Mixture model and combined with the snow deposition and erosion model, the snowdrift on an air-supported membrane coal shed is simulated, the distribution factor for roof snow load is given under different wind speed and different directions to estimate the worst load case, snow load on the air-supported membrane structure is significantly affected by snowdrift which causes significant non-uniform snow load. Furthermore, the response analysis of the air-supported membrane structure under snow load is studied, for comparison, uniform snow load case, non-uniform snow load case, and simulated snow load case under 0° wind direction are all considered. The results show that non-uniform snow load caused by snow drifting is more dangerous and should be considered. © The Author(s) 2022.

关键词:

Structural dynamics Snow Roofs Numerical methods Membrane structures Numerical models

作者机构:

  • [ 1 ] [Yanli, He]Faculty of Urban Construction, Beijing University of Technology, Beijing, China
  • [ 2 ] [Xiaolin, Yan]Faculty of Urban Construction, Beijing University of Technology, Beijing, China
  • [ 3 ] [Xiongyan, Li]Faculty of Urban Construction, Beijing University of Technology, Beijing, China

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来源 :

International Journal of Space Structures

ISSN: 0956-0599

年份: 2023

期: 1

卷: 38

页码: 4-19

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