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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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This study investigates effects of partially earth anchored cable system on the structural safety for a long-span cable-stayed bridge under dynamic loads such as seismic and wind load. For a three span cable-stayed bridge with a main span length of 810 m, two models are analyzed and compared; one is a bridge model with a self anchored cable system, the other is a bridge model with a partially earth anchored cable system. By performing multi-mode spectrum analysis for a prescribed seismic load and multi-mode buffeting analysis for a fluctuating wind component, the structural response of two models are compared. From results, the partially earth anchored cable system reduce the maximum pylon moment by 66% since earth anchored cables affect the natural frequencies of girder vertical modes and pylon longitudinal modes. In addition, the girder axial forces are decreased, specially the decrement of the axial force is large in seismic load, while girder moment is slightly increased. Thus, the partially earth anchored cable system is effective system not only on reduction of girder axial forces but also improvement of structural safety of a cable-stayed bridge under dynamic loads such as seismic and wind loads.
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참고문헌 (11)
참고문헌 신청
N. J. Gimsing / 1997 / Cable Supported Bridges / Wiley West Sussex
N. J. Gimsing / 2006 / Evolution in Span Length of Cable-stayed Bridges / Challenges in the 21st Century: Proceedings of International Conference on Bridge Engineering
J. Müller / 1992 / The Bi-stayed Bridge Concept - Overview of Wind Engineering Problems / Proceedings of the 1st International Symposium on Aerodynamics of Large Bridges :237~245
X. Xie / 1997 / Static Behaviors of Self-anchored and Partially Earth-anchored Long-span Cable-stayed Bridges / Structural Engineering and Mechanics 5(6):767~774
B. Sun / 2009 / Trial Design of a Proposed Partially Ground-Anchored Cable-Stayed Bridge with a Main Span 1400 m / Bridge Construction
N. J. Gimsing / 2006 / Evolution in Span Length of Cable-stayed Bridges / Challenges in the 21st Century: Proceedings of International Conference on Bridge Engineering
J. Müller / 1992 / The Bi-stayed Bridge Concept - Overview of Wind Engineering Problems / Proceedings of the 1st International Symposium on Aerodynamics of Large Bridges :237~245
X. Xie / 1997 / Static Behaviors of Self-anchored and Partially Earth-anchored Long-span Cable-stayed Bridges / Structural Engineering and Mechanics 5(6):767~774
B. Sun / 2009 / Trial Design of a Proposed Partially Ground-Anchored Cable-Stayed Bridge with a Main Span 1400 m / Bridge Construction
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