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논문 기본 정보

자료유형
학술저널
저자정보
Zhang, Wen-Ming (School of Civil Engineering, Southeast University) Ge, Yao-Jun (State Key Laboratory for Disaster Reduction in Civil Engineering, Department of Bridge Engineering, Tongji University) Levitan, Marc L. (Department of Civil and Environmental Engineering, Louisiana State University)
저널정보
테크노프레스 Wind & structures Wind & structures 제17권 제5호
발행연도
2013.1
수록면
553 - 564 (12page)

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By using the nonlinear aerostatic stability theory together with the method of mean wind decomposition, a method for nonlinear aerostatic stability analysis is proposed for long-span suspension bridges under yaw wind. A corresponding program is developed considering static wind load nonlinearity and structural nonlinearity. Taking a suspension bridge with three towers and double main spans as an example, the full range aerostatic instability is analyzed under wind at different attack angles and yaw angles. The results indicate that the lowest critical wind speed of aerostatic instability is gained when the initial yaw angle is greater than $0^{\circ}$, which suggests that perhaps yaw wind poses a disadvantage to the aerostatic stability of a long span suspension bridge. The results also show that the main span in upstream goes into instability first, and the reason for this phenomenon is discussed.

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