Plastic Hinge Analysis of Seismic Performance of High Bridge Pier

Abstract:

To analyze the second plastic hinge of high bridge pier formed in the earthquake and study the pier seismic performance, this paper takes the Kunming Slope Railway Bridge as an example. The simulation model was built by the elastic-plastic finite element ANSYS software. The buckling load of piers was calculated by buckling analysis capabilities of ANSYS software, a small enough initial offset given to the model, then the buckling load of piers put into the model. The deformation of non-linear model under the loads was calculated, the process was recorded that the reinforced concrete bridge piers initially yielding on the cross-section, continuously rotating around the neutral axis, and finally forming the eventually plastic hinges in certain parts of pier. The location of the plastic hinges can be inferred by final data of analysis software. By analyzing the calculated results, the seismic performance of the second plastic hinge in high bridge is studied.

• Periodical: Applied Mechanics and Materials (Volume 238)
• Pages: 765-768
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.238.765
• Online since: November 2012
• Authors: Rui Hong Gao, Rui Lin Chen, Su Gong Cao, Zhang Tang, Xin Qiang Xiao, Hong Bo Hu
• Keywords: ANSYS, High Bridge Pier, Second Plastic Hinge, Seismic Performance

References

[1] L. Fan, Bridge Seismic, Tongji University Press, Shanghai, (1997).

[2] Nelson Lam, John Wilson, Graham Hutchinson, The ductility reduction factor in the seismic design of buildings, Earthquake Engng. Struct. Dyn., 27 (1998) 749-769.

DOI: 10.1002/(sici)1096-9845(199807)27:7<749::aid-eqe761>3.0.co;2-l

[3] Tomaz Vidic, Peter Fajfar, Matej Fischinger, Consistent inelastic design spectra: strength and displace, Earthquake Engng. Struct. Dyn., 23 (1994) 507-521.

DOI: 10.1002/eqe.4290230504

[4] M. J. N. Priestley, R. Park, Strength and ductility of concrete bridge columns under seismic loading, ACI Structural Journal, 8 (1987) 61-76.

DOI: 10.14359/2800

[5] M. Berry, M. Eberhard, Performance models for flexural damage in reinforced concrete columns, University of California, Berkeley, PEER Report 2003/18.

[6] Q. Liu, L. Fan, Analysis of ductile reinforced concrete piers, Journal of Tongji University, 3 (1998) 245-249.

[7] Q. Liu, G. Yan, Y. Chen, Low seismic performance of reinforced concrete piers experimental study, Journal of Northern Jiaotong University, 5 (1996) 517-521.

[8] G. Yan, H. Xiang, Beam with a single-row pile pier seismic ductility practical method of checking, Journal of Civil Engineering, 2 (1993) 48-56.

[9] K. Zhang, T. Ma, B. Tong, One hundred meters high box-model test and analysis of pier, Bridge Construction, 2 (1997) 49-56.

[10] Z. Sun, J. Li, G. Yan, Reinforced concrete single column piers experimental study on seismic, Railway Engineering, 5 (2009) 36-39.