Abstract
In design and analysis of seismic resistant structures and particularly the bridge structures vertical ground motion tends, in general, to be ignored or underestimated. However, during recent earthquakes high amplitude of motions were recorded in vertical direction near to the fault, invalidating such design assumptions of neglecting the vertical motion. This paper presents an analytical investigation on the effect of the near fault vertical ground motions on seismic response of a long span cable-stayed bridge. Responses of the bridge subjected to ground motions with and without vertical ground motion is carried using near fault ground motions on three dimensional bridge model. A suite of five near field ground motion with varying V/H (Vertical to Horizontal) ratio of peak ground acceleration is used. Influence of vertical motion on global and local structural response is presented. The study also takes into consideration the arrival time of peak vertical motion which has received little attention previously. Effects of coincidence of peak vertical motion with the peak horizontal motion in time domain are also analyzed. The study reveals that influence of vertical motion on the seismic response of the Karnali Bridge is slight and coinciding peak vertical motion with peak horizontal motion also have slighter effects compared to the motion without such coincidence.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Button, M. R., Cronin, C. J., and Mayes, R. L. (2002). “Effect of vertical motions on seismic response of bridges.” ASCE Journal of Structural Engineering, Vol. 128, No. 12, pp. 1551–1564.
Chen, W. F. and Duan, L. (1990) “A yield surface equation for doubly symmetrical section.” Structural Engineering, Vol. 12, No. 2, pp. 114–119.
Collier, C. J. and Elnashai, A. S. (2001). “A procedure for combining vertical and horizontal seismic action effects.” Journal of Earthquake Engineering, Vol. 5, No. 4, pp. 521–539.
Kalkan, E. and Graizer, V. (2007). “Multi component ground motion response spectra for coupled horizontal, vertical, angular acceleration and tilt.” ISET Journal of Earthquake Technology, Paper No. 485, Vol. 44, No. 1, pp. 259–284.
Kim, S. J., Holub, C., and Elnashai, A. S. (2011). “Analytical assessment of the effect of vertical earthquake motion on RC bridge piers.” Journal of Structural Engineering, ASCE, Vol. 137, No. 2, pp. 252–260
Kunnath, S., Abramson, N., Chai, Y. H., Erduran, E., and Yilmaz, Z. (2008). Development of guidelines for incorporation of vertical ground motion effects in seismic design of highway bridge, Technical Report CA/UCD-SESM-08-01, University of California at Davis.
Kunnath, S. K., Erduran, E., Chai, Y. H., and Yashinsky, M. (2007). “Near-fault vertical ground motions on seismic response of highway overcrossings.” Journal of Bridge Engineering, ASCE, Vol. 13, No. 3, pp. 282–290.
Li, X., Dou, H., and Zhu, X. (2007). “Engineering characteristics of near-fault vertical ground motions and their effect on the seismic response of bridges.” Earthquake Engineering and Engineering Vibration, Vol. 6, No. 4, pp. 345–350.
Nazmy, A. S. and Abdel Ghaffar, A. M. (1991). “Three dimensional nonlinear seismic behavior of cable-stayed bridges.” Journal of Structural Engineering, ASCE, Vol. 117, No 11, pp. 3456–3476.
Newmark, N. M., Blume, J. A., and Kapur, K. K. (1973). “Seismic design spectra for nuclear power plants.” Journal of the Power Division, Proceedings of ASCE, Vol. 99, No. 2, pp. 287–303.
Papazoglou, A. J. and Elnashai, A. S. (1996). “Analytical and field evidence of damaging effects of vertical earthquake ground motion.” Journal of Earthquake Engineering, Vol. 25, No. 10, pp. 1109–1137.
Ren, W. X. and Obata, M. (1999). “Elastic plastic seismic behavior of long-span cable-stayed bridges.” Journal of Bridge Engineering, ASCE, Vol. 4, No.3, pp. 194–203
Saadeghvaziri, M. A. and Foutch, D. A. (1991). “Dynamic behavior of R/C highway bridges under the combined effect of vertical and horizontal earthquake motions.” Earthquake Engineering and Structural Dynamics, Vol. 20, pp. 535–549.
Shrestha, B. and Tuladhar, R. (2012), “Response of Karnali Bridge, Nepal to near fault earthquakes.” Proceedings of ICE- Bridge Engineering, ICE, Vol. 165, No. 4, pp. 223–232.
Valdebenito G. E. and Aparicio, A. C. (2006), “Seismic behavior of cable-stayed bridges: The state of the art review.” 4th International Conference on Earthquake Engineering, Taiwan, paper No. 45.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Shrestha, B. Seismic response of long span cable-stayed bridge to near-fault vertical ground motions. KSCE J Civ Eng 19, 180–187 (2015). https://doi.org/10.1007/s12205-014-0214-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12205-014-0214-y