- Volume 51 Issue 6
DOI QR Code
Seismic design strategy of cable stayed bridges subjected to strong ground motions
- Xu, Yan (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
- Duan, Xinzhi (Shanghai Municipal Engineering Design and Research Institute) ;
- Li, Jianzhong (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
- Received : 2012.10.17
- Accepted : 2014.04.05
- Published : 2014.09.25
In this paper, we present an alternative seismic design strategy for cable stayed bridges with concrete pylons when subjected to strong ground motions. The comparison of conventional seismic design using supplemental dampers (strategy A) and the new strategy using nonlinear seismic design of pylon columns (strategy B) is exemplified by one typical medium span cable stayed bridge subjected to strong ground motions from 1999 Taiwan Chi-Chi earthquake and 2008 China Wenchuan earthquake. We first conducted the optimization of damper parameters according to strategy A in response to the distinct features that strong ground motions contain. And then we adopted strategy B to carry out seismic analysis by introducing the elastic-plastic elements that allowing plasticity development in the pylon columns. The numerical results show that via strategy A, the earthquake induced structural responses can be kept in the desired range provided with the proper damping parameters, however, the extra cost of unusual dampers will be inevitable. For strategy B, the pylon columns may not remain elastic and certain plasticity developed, but the seismic responses of the foundation will be greatly decreased, meanwhile, the displacement at the top of pylon seems to be not affected much by the yielding of pylon columns, which indicates the pylon nonlinear design can be an alternative design strategy when strong ground motions have to be considered for the bridge.
- Nakashima, M., Matsumiya, T. and Asano, K. (2000), "Comparison in earthquake responses of steel moment frames subjected to near-fault strong motions recorded in Japan, Taiwan and the US", Proceedings of the International Workshop on Annual Commemoration of Chi-Chi Earthquake, Technology Aspect, 2, Taiwan.
- Liao, W.I., Loh, C.H. and Lee, B.H. (2004), "Comparison of dynamic response of isolated and non-isolated continuous girder bridges subjected to near-fault ground motions", Eng. Struct., 26, 2173-2183. https://doi.org/10.1016/j.engstruct.2004.07.016
- Chopra, A.K. and Chintanapakdee, C. (2001), "Comparing response of SDOF systems to near-fault and farfault earthquake motions in the context of spectral regions", Earthq. Eng. Struct. Dyn., 30, 1769-1789. https://doi.org/10.1002/eqe.92
- Makris, N.B. and Cameron, J. (2004), "Evaluation of peak ground velocity as a "good" intensity measure for near-source ground motions", J. Eng. Mech., 130, 1032-1044. https://doi.org/10.1061/(ASCE)0733-9399(2004)130:9(1032)
- Park, S.W., Ghasemi, H., Shen, J.P.G., Somerville, P.G., Yen, W.P. and Yashinsky, M. (2004), "Simulation of the seismic performance of the Bolu viaduct subjected to near-fault ground motions", Earthq. Eng. Struct. Dyn., 33, 1249-1270. https://doi.org/10.1002/eqe.395
- Alavi, B. and Krawinkler, H. (2004), "Behavior of moment-resisting frame structures subjected to near-fault ground motions effects", Earthq. Eng. Struct. Dyn., 33, 687-706. https://doi.org/10.1002/eqe.369
- Combault, J. and Teyssandier, J.P. (2005), "The Rion-Antirion Bridge: concept, design and construction", Proceedings of the 2005 Structures Congress and the 2005 Forensic Engineering Symposium, New York.
- Okamoto, Y. and Nakamura, S. (2011), "Static and seismic studies on steel/concrete hybrid towers for multispan cable-stayed bridges", J. Construct. Steel Res., 67(2), 203-210. https://doi.org/10.1016/j.jcsr.2010.08.008
- Camara, A. and Astiz, M.A. (2012), "Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation", Eng. Struct., 41, 444-455. https://doi.org/10.1016/j.engstruct.2012.03.059
- Vader, T.S. and McDaniel, C.C. (2007), "Influence of dampers on seismic response of cable-supported bridge towers", J. Bridge Eng., 12(3), 373-379. https://doi.org/10.1061/(ASCE)1084-0702(2007)12:3(373)
- Miyamoto, H.K., Gilani, A.S.J., Wada, A. and Ariyaratana, C. (2010), "Limit states and failure mechanisms of viscous dampers and the implications for large earthquakes", Earthq. Eng. Struct. Dyn., 39, 1279-1297. https://doi.org/10.1002/eqe.993
- Ribakov, Y. (2011), "Using viscous and variable friction dampers for improving structural seismic response", Struct. Des. Tall Spec. Build., 5(20), 579-593.
- Chen, X.W., Li, J.X. and Cheng, J. (2010), "Seismic performance analysis of wenchuan hospital structure with viscous dampers", Struct. Des. Tall Spec. Build., 5(19), 397-419.
- Ministry of Transportation of the People's Republic of China, JTG/T B02-01-2008 (2008), Guidelines for Seismic Design of Highway Bridges, China Communications Press, Beijing. (in Chinese)
- AASHTO (2007), AASHTO Guide Specifications for LRFD Seismic Bridge Design, Washington, D.C., U.S.A.
- Chang, K.C., Mo, Y.L., Chen, C.C., Lai, L.C. and Chou, C.C. (2004), "Lessons learned from the damaged Chi-Lu cable-stayed bridge", J. Bridge Eng., 9, 343-352. https://doi.org/10.1061/(ASCE)1084-0702(2004)9:4(343)
- SAP2000, Version 9.1.6 (1999), Manual of Static and Dynamic Finite Element Analysis of Structures, Computers & Structures, Inc, California.
- Ren, W.X. and Makoto, O. (1999), "Elastic-plastic seismic behavior of long span cable-stayed bridges", J. Bridge Eng., 4, 194-203. https://doi.org/10.1061/(ASCE)1084-0702(1999)4:3(194)
- Xtract, Version 2.6.2 (2002), Cross-Sectional Structural Analysis of Components, Imbsen Software Systems, California.
- Lateral Isolation System of a Long-Span Cable-Stayed Bridge with Heavyweight Concrete Girder in a High Seismic Region vol.22, pp.1, 2017, https://doi.org/10.1061/(ASCE)BE.1943-5592.0000965