Effects of Column Stiffness on the Modal Contribution to Displacement Response of Singe-Column Bent Viaducts in the Transverse Direction

Abstract:

The influence of column stiffness on the modal contribution in the transverse direction of singe-column bent viaducts in the nonlinear range is investigated in this paper. The modal contribution ratio is introduced as a measure of the importance of a mode after a bridge yields. Three typical mathematical models of irregular singe-column bent viaducts are selected for analytical seismic response. The comparative evaluation of modal contribution ratios are carried out when columns with different stiffness yielded individually. Results show that yielding of a stiffer column affects the contribution of the fundamental mode as well as that of the higher modes significantly while the yielding of a more flexible column affects the modal contribution of the fundamental mode only.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 1711-1715
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.1711
• Online since: May 2011
• Authors: Liang Chen
• Keywords: Bridge, Modal Contribution, Seismic Analysis

References

[1] Kunnath, S.K.: Computer-Aided Civil and Infrastructure Engineering. Vol.19 (2004), p.282

[2] Reinhorn AM: Proceedings of the International Workshop on Seismic Design Methodologies for the Next Generation of Codes, Bled, Slovenia (1997), p.277

[3] De Rue GM:Nonlinear static procedure analysis of 3D structures for design applications. Master Thesis. University of New York, Buffalo (1998).

[4] Aydinoglu MN.: Proceedings of the International Workshop Performance-Based Seismic Design Concepts and Implementation, Bled, Slovenia ( 2004),p.345

[5] Chopra AK, Goel RK: Earthquake Engineering and Structural Dynamics. Vol.31 (2002), p.561

[6] Hazim Dwairi, Mervyn Kowalsky: 13th World Conference on Earthquake Engineering, Vancouver, B.C., Canada (2004), No.231