1. Study on wind-resistant design of structures based on load effects.
- Author
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Chen Kai, Fu Longbiao, Qian Jihong, and Jin Xinyang
- Subjects
- *
WIND resistant design , *WIND pressure , *WIND tunnels , *CONSTRUCTION - Abstract
Through a comprehensive analysis on the fundamental theory of the equivalent static wind load (ESWL), it is pointed out that the ESWL derived from the wind-induced vibration factor in Chinese Load Code will lead to the equivalent results for all the load effects provided that only the first vibration mode needs to be considered. But on the condition that several vibration modes are involved, the ESWL satisfying all the load effects doesn' t exist unless these modes are completely correlated. So in general cases, an ESWL given by different analysis methods including the gust loading factor method is only effective for one or more specific equivalent targets. Other load effects may be overestimated or underestimated under the action of such ESWL. In order to overcome the limit of the conventional methods, a new approach was proposed to make wind-resistant design based on load effects. The envelope of various load effects was obtained first through wind tunnel tests and it was combined directly with the corresponding effects induced by other loads. This design method was demonstrated by an engineering case. It is shown that the ESWL derived from the gust loading factor overestimated significantly some load effects while the wind-resistant design using the load effects envelop is accurate and convenient to carry out. [ABSTRACT FROM AUTHOR]
- Published
- 2012