INVESTIGATION OF CURVE RADIUS AND POUNDING ON SEISMIC PERFORMANCE OF ISOLATED CONCRETE CANTILEVER CURVED VIADUCTS EQUIPPED WITH DECK UNSEATING PREVENTION CABLE RESTRAINERS

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SHAYANFAR MOHSENALI; MIRZAEE AKBAR

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Journal: ASAS Year:2009 | Volume:11 | Issue:24 Page(s): 14-27

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Title

INVESTIGATION OF CURVE RADIUS AND POUNDING ON SEISMIC PERFORMANCE OF ISOLATED CONCRETE CANTILEVER CURVED VIADUCTS EQUIPPED WITH DECK UNSEATING PREVENTION CABLE RESTRAINERS

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SHAYANFAR MOHSENALI | MIRZAEE AKBAR | Issue Writer Certificate

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Abstract

This paper presents an accurate analytical model to evaluate the efficiency of using longitudinal restrainer cables for preventing unseating of concrete cantilever curved viaducts. Since the dynamic behavior of bridge support and especially longitudinal restrainer cables are so complex and their results with linear analytical methods don't have enough accuracy, ANSYS software is used and different curve radiuses and different earthquake records are selected and then nonlinear time history analysis is conducted on the 3D finite element model of "Karoon" bridge. With this model, high concentration of seismic forces in some cables is observed. Also it is found that the nonsymmetrical distribution of impact forces, because of not synchronizing movements of spans close to the expansion joints, increases the probability of vulnerability in the cables and isolation bearing supports.In general, longitudinal restrainer cables decrease the probability of deck unseating. Also these cables prevent the effect of high amount of impact forces on the spans close to expansion joints. On the other hand, to avoid the failure of restrainer cables, much attention is needed to nonlinear behavior of bridge regarding its geometric properties such as curve radius and characteristics of isolation bearings.

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APA: Copy

SHAYANFAR, MOHSENALI, & MIRZAEE, AKBAR. (2009). INVESTIGATION OF CURVE RADIUS AND POUNDING ON SEISMIC PERFORMANCE OF ISOLATED CONCRETE CANTILEVER CURVED VIADUCTS EQUIPPED WITH DECK UNSEATING PREVENTION CABLE RESTRAINERS. ASAS, 11(24), 14-27. SID. https://sid.ir/paper/226872/en

Vancouver: Copy

SHAYANFAR MOHSENALI, MIRZAEE AKBAR. INVESTIGATION OF CURVE RADIUS AND POUNDING ON SEISMIC PERFORMANCE OF ISOLATED CONCRETE CANTILEVER CURVED VIADUCTS EQUIPPED WITH DECK UNSEATING PREVENTION CABLE RESTRAINERS. ASAS[Internet]. 2009;11(24):14-27. Available from: https://sid.ir/paper/226872/en

IEEE: Copy

MOHSENALI SHAYANFAR, and AKBAR MIRZAEE, “INVESTIGATION OF CURVE RADIUS AND POUNDING ON SEISMIC PERFORMANCE OF ISOLATED CONCRETE CANTILEVER CURVED VIADUCTS EQUIPPED WITH DECK UNSEATING PREVENTION CABLE RESTRAINERS,” ASAS, vol. 11, no. 24, pp. 14–27, 2009, [Online]. Available: https://sid.ir/paper/226872/en

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