Abstract
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 language | English |
|---|---|
| Pages (from-to) | 251-261 |
| Number of pages | 11 |
| Journal | Journal of Wind Engineering and Industrial Aerodynamics |
| Volume | 83 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 1999 Nov |
| Event | Proceedings of the 1997 4th Asia Pacific Symposium on Wind Engineering - Gold Coast, QLD, Australia Duration: 1997 Jul 14 → 1997 Jul 16 |
Keywords
- 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