Study on Numerical Simulation for Failure Process of Girder Bridge under Seismic Influence

Abstract:

Based on the finite element analysis software Midas, it takes response spectrum analysis, and posts the failure mechanism and characteristics of Girder Bridge under intense earthquake. Through the seismic response spectrum displacement maps of Girder Bridge, it finds out that the abutment and foundation deformation is in evidence, especially the top of abutment foundation. Through the study of seismic internal force variation on girder and pier, it indicates that the longitudinal earthquake controls axial force, vertical shearing force and in-plane bending moment, transversal earthquake dominates transversal shearing force and out-planes bending moment. And it shows that the pier and mid-span section are seismic response sensitivity parts. The three parts, axial force, longitudinal shearing force and in-plane bending moment, becomes the controlling index of pier intensity. According to the seismic response spectrum displacement for pier and abutment, the transversal anti-seismic stiffness of pier is smaller than longitudinal one, longitudinal seismic force shows no effect on transversal displacement, and the transversal seismic force can augments longitudinal displacement. At the same condition, longitudinal seismic force changes the longitudinal distributing form of abutment and concaves it deeply, and the transversal seismic force can not change its shape, but augment its value.

• Periodical: Advanced Materials Research (Volume 530)
• Pages: 122-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.530.122
• Online since: June 2012
• Authors: Hong Kai Chen, Hong Mei Tang, Ting Hu, Yi Hu, Xiao Ying He
• Keywords: Action of Intense Earthquake, Breakage Characteristics, Bridge Engineering, Numerical Simulation, Stiffness Ratio

References

[1] Button, M. R., Cronin, C. J., and Mayes, R. L. Effect of vertical motions on seismic response of highway bridges. J. Struct. Eng. Vol. 128(2002), p.1551–1564.

DOI: 10.1061/(asce)0733-9445(2002)128:12(1551)

[2] Collier, C. J., and Elnashai, A. S. A procedure for combining vertical and horizontal seismic action effects. J. Earthquake Eng., Vol. 5(2001), p.521–539.

DOI: 10.1080/13632460109350404

[3] Elgamal,A., He, L. Vertical earthquake ground motion records: an overview. J. Earthquake Eng., Vol. 8(2004), p.663–697.

DOI: 10.1080/13632460409350505

[4] Kunnath S.K., Erduran,E., Chai, Y. H, and Yashinsky., M. (2008). Effect of near-fault vertical ground motions on seismic response of highway overcrossings. J. Bridge Eng., 13(3), 282–290.

DOI: 10.1061/(asce)1084-0702(2008)13:3(282)

[5] Zanardo G, Hao H, Modena C. Seismic response of multi-span simply supported bridges to a spatially varying earthquake ground motion. Earthquake Eng. Struct. Dyn. Vol. 31(2002), p.1325–1345.

DOI: 10.1002/eqe.166

[6] Lupoi A, Franchin P, Pinto PE, Monti G. Seismic Design of Bridges Accounting for Spatial Variability of Ground Motion, Earthquake Eng. Struct. Dyn. Vol. 34(2005), p.327–348.

DOI: 10.1002/eqe.444

[7] Zerva A. Response of multi-span beams to spatially incoherent seismic ground motions. Earthquake Eng. Struct. Dyn. Vol. 19 (1990), p.819– 832.

DOI: 10.1002/eqe.4290190604

[8] Zhiqiang Wang and George C. Lee. A comparative study of bridge damage due to the Wenchuan, Northridge, Loma Prieta and San Fernando earthquakes [J]. Earthquake Engineering and Engineering Vibration, Vol. 8(2009), pp.251-261.

DOI: 10.1007/s11803-009-9063-y

[9] Fabio F. Taucer, Carlo Paulotto and Gustavo Ayala. Hollow bridge-pier properties for response spectrum analysis [J]. Bulletin of Earthquake Engineering, Vol. 8(2010), pp.1397-1420.

DOI: 10.1007/s10518-010-9189-3

[10] DONG Shengli, LI Xiaojun and QI Xingjun. Study on seismic semi-active control algorithms for simply supported beam bridge [J]. Earthquake Engineering and Engineering Vibration, Vol. 27(2007), pp.156-160.

[11] WANG Jun-wen, LI Jian-zhong and FAN Li-chu. Parametric study of longitudinal seismic pounding response for continuous girder bridges [J]. China Journal of Highway and Transport, Vol. 18(2005), pp.42-47.