Wind-induced dynamic response and resultant load estimation of a circular flat roof

Yasushi Uematsu, Keisuke Watanabe, Akihiro Sasaki, Motohiko Yamada, Takeshi Hongo

Research output: Contribution to journalConference articlepeer-review

41 Citations (Scopus)


The design wind load for the structural frame of a circular flat roof has been investigated, based on a statistical analysis of the dynamic response to turbulent wind forces. The roof structure is supposed to act like an elastic plate under wind loading. Wind pressures were measured simultaneously at some hundred points on the roof of the model building in two kinds of turbulent boundary layers, which simulated the natural winds over typical open-country and urban terrains. The span-to-height ratio of the model was changed from 1 to 8. The dynamic response of the roof is analyzed in the time domain as well as in the frequency domain, using the experimental data of the wind pressures. In the analysis, both the deflection and the bending moment are considered as the most important load effects. The results indicate that the equivalent static pressure, which reproduces the maximum response, can be evaluated by using a gust loading factor approach. The effects of various parameters on the gust loading factor are investigated. Based on the results, an empirical formula for estimating the gust loading factor is provided.

Original languageEnglish
Pages (from-to)251-261
Number of pages11
JournalJournal of Wind Engineering and Industrial Aerodynamics
Issue number1-3
Publication statusPublished - 1999 Nov
EventProceedings of the 1997 4th Asia Pacific Symposium on Wind Engineering - Gold Coast, QLD, Australia
Duration: 1997 Jul 141997 Jul 16


  • Circular flat roof
  • Dynamic response analysis
  • Gust loading factor
  • Load effect
  • Wind load
  • Wind tunnel test

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering


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