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논문 기본 정보

자료유형
학술저널
저자정보
Ahmet C. Altunışık (Karadeniz Technical University) Süleyman Adanur (Karadeniz Technical University) Kurtuluş Soyluk (Gazi University) A. Aydın Dumanoğlu (Karadeniz Technical University)
저널정보
국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.22 No.5
발행연도
2016.1
수록면
1,001 - 1,018 (18page)

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초록· 키워드

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The purpose of this paper is to compare the structural responses obtained from the stochastic analysis of a suspension bridge subjected to uniform and partially correlated seismic ground motions, using different spatial correlation functions commonly used in the earthquake engineering. The spatial correlation function employed in this study consists of a term that characterizes the loss of coherency. To account for the spatial variability of ground motions, the widely used four loss of coherency models in the literature has been taken into account in this study. Because each of these models has its own characteristics, it is intended to determine the sensitivity of a suspension bridge due to these losses of coherency models which represent the spatial variability of ground motions. Bosporus Suspension Bridge connects Europe to Asia in Istanbul is selected as a numerical example. The bridge has steel towers that are flexible, inclined hangers and a steel box-deck of 1074 m main span, with side spans of 231 and 255 m on the European and Asian sides, respectively. For the ground motion the filtered white noise model is considered and applied in the vertical direction, the intensity parameter of this model is obtained by using the S16E component of Pacoima Dam record of 1971 San Fernando earthquake. An analytically simple model called as filtered white noise ground motion model is chosen to represent the earthquake ground motion. When compared with the uniform ground motion case, the results obtained from the spatial variability models with partial correlation outline the necessity to include the spatial variability of ground motions in the stochastic dynamic analysis of suspension bridges. It is observed that while the largest response values are obtained for the model proposed by Harichandran and Vanmarcke, the model proposed by Uscinski produces the smallest responses among the considered partially correlated ground motion models. The response values obtained from the uniform ground motion case are usually smaller than those of the responses obtained from the partially correlated ground motion cases. While the response values at the flexible parts of the bridge are totally dominated by the dynamic component, the pseudo-static component also has significant contributions for the response values at the rigid parts of the bridge. The results also show the consistency of the spatial variability models, which have different characteristics, considered in this study.

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참고문헌 (33)

참고문헌 신청
Abrahamson, N. A. / 1993 / Spatial variation of multiple support inputs / Proceedings of the 1st U.S. Seminar, Seismic Evaluation and Retrofit of Steel Bridges google schola Adanur, S. / 2003 / Stochastic analysis of suspension bridges for different correlation functions / Proceedings of the 9th International Conference on Civil and Structural Engineering Computing 86:207~208 google schola Adanur, S. / 2016 / Multiple-support seismic response of bosporus suspension bridge for various random vibration methods / Case Studies in Structural Engineering 5:54~67 google schola Ateş, Ş. / 2006 / The effect of spatially varying earthquake ground motions on the stochastic response of bridges isolated with friction pendulum systems / Soil Dyn. Earthq. Eng 26(1):31~44 google schola Barbaros Atmaca / 2012 / Construction stage analysis of three-dimensional cable-stayed bridges / Steel and Composite Structures, An International Journal 12(5):413~426 dbpia

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