System Reliability Analysis on the Cable-stayed Bridge Considering Cable Breakage and Resistance Degradation

YAN Banfu,SUN Yanfeng, ZOU Qiqi


The is paper employed the stage critical strength-considered branch-bound method to explore the major failure mode of a cable-stayed bridge, and investigated the variations of major failure mode and system reliability in the cases of cable breakage and resistance deterioration. The study indicates that, in the case of without cable breakage, the correlation among the major failure modes of the structure is high, while the correlation appears to clear grouping characteristics in the case of a sudden failure of a cable. The system reliability decreased with the resistance deterioration of the cable. Moreover, the remaining structural system reliability indices decreased remarkably in the case of the breakage of the outside cable, and the dominant cable that has the greatest impact on the system reliability was captured to guide the further structural design.



Keywords: cable-stayed bridge,  cable breakage,  system reliability,  branch-bound method,  failure mode

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MOZOS С M. APARICIO A C. Parametric study on the dynamic response of cable bridges to the sudden failure of a stay. Part I: Bending moment acting on the deck [J]. Engineering Structures 2010, 32( 10): 3288- 3300.

MOSES F. System reliability developments in structural engineering [J]. Struct. Safety. 1982(1):3—13.

GHARAIBEH F. SFRANGOPOL D M.OONUFRIOU T. Reli-ability-based importance assessment of structural members with applications to complex structures [J]. Computers & Structures, 2002,80 (12): 1113—1131.

DENG L. CAI С S. BARBATO M. Reliability-based dynamic load allowance for capacity rating of prestressed concrete girder bridges[J J. Journal of Bridge Engineering. 2011. 16 (6): 872 -880.

LIU Jianhua.DONG Cong. ZHANG Yuling. System reliability of cable-stayed bridge based on ANSYS. [J]. Engineering Mechanics. 2003 (Suppl):74 —78.(In Chnese)

WANG Chunsheng. CHEN Weizhen, CHEN Airong. System fatigue reliability assessment of riveted steel bridges [J].China Journal of Highway and Transport. 2008. 21 (5): 45 — 49. (In Chinese)

YAN D. CHANG С С. Vulnerability assessment of cable-stayed bridges in probabilistic domain [J]. Journal of Bridge Enginering,2014.14(14):270-278.

LIU Xiaoluan. Structural system reliability evaluation of long-span cable-stayed bridges[J]. Journal of Jiangsu University; Natural Science Edition.2011,6(6) :732 — 735. (In Chinese)

DONG Cong. The theory and application of modem structural system reliability [M]. Beijing: Science Press, 2001. (In Chinese)

GAO Xin. Analysis methods for suspender damage and system reliability of existing concrete filled steel tubular arch bridge . D].Harbin; College of Civic Enginccving, Harbin Institute of Tethnology ,2011.(In Chnese)

GAO Xin. OU Jinping. Branch and bound method for bridge failure mode approach [J]. Journal of Huazhong University of Science and Technology,2008.25(4):227—231.(In Chinese)


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