Reliability Assessment for the Balanced Cantilever Construction Phases of Super Long-Span Cable-Stayed Bridges with Steel Box Girder

Abstract:

Balanced cantilever construction phases are of great importance for the total life cycle processes of super long-span cable-stayed bridges. For assessment purpose, a systematic study on the reliability evaluation of these phases is carried out. Taking Sutong bridge as the sample structure studied, a series of load and resistance models are then established on the basis of field measurement. Using all these achievements, a typical phase of girder segment 6# lifting is chosen for reliability evaluation. Results of the analysis show that the established models are quite representative and reflect actual random nature perfectly. Furthermore, compared with pylon and stay cables the stiffening girder seems more likely to fail in accordance with reliability index. The major failure mode of it in terms of present analysis is the stability failure due to the action of bending and axial load. Nonetheless, the components on the whole are still in a high level of reliability, which can guarantee the proceeding of construction with efficiency.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 1542-1550
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.1542
• Online since: July 2014
• Authors: Bing Bai*, Qing Hua Zhang, Qiao Li
• Keywords: Balanced Cantilever Construction, Components Resistance, Steel Box Girder, Structural Load during Construction, Structural Reliability, Super Long-Span Cable-Stayed Bridge

References

[1] M. Bruneau. Evaluation of system-reliability methods for cable-stayed bridge design. Journal of Structural Engineering, 1992; 118(4): 1106-1120.

DOI: 10.1061/(asce)0733-9445(1992)118:4(1106)

[2] Y. Liu. The research on time-dependent reliability of concrete cable-stayed bridges during construction. Ph.D. Thesis, Hunan University, Changsha, 2005. (in Chinese).

[3] Y. Liu, J.R. Zhang. System reliability for concrete cable-stayed bridge during construction. China Journal of Highway and Transport, 2006; 19(5): 53-58. (in Chinese).

[4] J. Cheng, Q.S. Li. Reliability analysis of a long span steel arch bridge against wind-induced stability failure during construction. Journal of Constructional Steel Research, 2009; 65(3): 552-558.

DOI: 10.1016/j.jcsr.2008.07.019

[5] T. Cho, T.S. Kim. Probabilistic risk assessment for the construction phases of a bridge construction based on finite element analysis. Finite Elements in Analysis and Design, 2008, 44(6-7): 383-400.

DOI: 10.1016/j.finel.2007.12.004

[6] J.R. Casas,. Reliability-based Partial safety factors in cantilever construction of concrete bridges. Journal of Structural Engineering, 1997, 123(3): 305-312.

DOI: 10.1061/(asce)0733-9445(1997)123:3(305)

[7] Y. Liu, J.R. Zhang. Calculation of time-variant reliability for concrete cable-stayed bridges during construction. China Journal of Highway and Transport, 2004, 17(3): 31-35. (in Chinese).

[8] M.H. Faber, S. Enelund, R. Rackwitz. Aspects of parallel wire cable reliability. Structural Safety, 2003, 25(2): 201-225.

DOI: 10.1016/s0167-4730(02)00057-7

[9] Wallodi Weibull. A statistical representation of fatigue failure in solids. Transactions on the Royal Institute of Technology, No. 27, Stockholm, (1949).

[10] H.E. Daniels. The statistical theory of the strength of bundles of threads. Part I. Proceedings of the royal society, Series A. London, 1945, 183: 405-435.

[11] A.S. Nowak, J.H. Zhou. System reliability models for bridges. Structural Safety, 1990, 7: 247-254.

[12] J.R. Zhang, G.D. Guan, W.J. Yang. Statistical analysis of live load on continuous beam bridge of cantilever casting during construction. Journal of Changsha Communications University, 2003, 19(2): 1-5. (in Chinese).

[13] Y.H. Li, W.G. Bao, X.W. Guo, X.Y. Cheng. Structural reliability and probabilistic limit state design for highway bridges. Beijing: China Communications Press; 1997. (in Chinese).

[14] Q.H. Zhang, Y.Z. Bu, Q. Li. Hybrid chaos algorithm of structural reliability analysis of cable-stayed bridge. China Journal of Highway and Transport, 2008, 21(3): 48-52. (in Chinese).

[15] C.M. Lan, H. Li, Y. Ju. Bearing capacity assessment for parallel wire cables. China Civil Engineering Journal, 2013, 46(5): 31-38. (in Chinese).