Analytical Evaluation of Retrofit Strategies for Multicolumn Bridges
Publication: Journal of Bridge Engineering
Volume 4, Issue 2
Abstract
The objective of the work of this paper was to investigate analytically the feasibility and advantages of applying various combinations of steel jacket retrofit measures developed for single-column bent bridges to multicolumn bent bridges. To achieve the objective, an existing nonlinear dynamic bridge analysis program with elastic–perfectly plastic column behavior and a conventional hysteresis model was modified in order to include softening behavior from column damage and a more realistic hysteresis rule for cyclic loading. A 2D structural model of an actual bridge was used to evaluate column retrofitting measures by applying a typical seismic record. Both partial and full column retrofit strategies were shown to result in decreased maximum earthquake response and decreased plastic deformation of columns for the bridge bent compared to the case without retrofitting, but to varying degrees. However, for some partial retrofit strategies, the plastic hinge rotation at the unretrofitted columns was deemed to be unacceptable. Therefore, it was concluded that partial column retrofit strategies are viable only if combined with an evaluation of the ductility capacity of the bridge.
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References
1.
Buckle, I. G., and Friedland, I. M., eds. ( 1995). “Seismic Retrofitting Manual for Highway Bridges.” Publ. No. FHWA-RD-94-052, May, Fed. Hwy. Admin., U.S. Department of Transportation, Washington, D.C.
2.
Cooper, J. D., Friedland, I. M., Buckle, I. G., Nimis, R. B., and Bobb, N. M. ( 1994). “The Northridge earthquake: Progress made, lessons learned in seismic resistant bridge design.” Public Roads, 58(1), 27–36.
3.
Imbsen, R., Nutt, R. V., and Penzien, J. ( 1978). “Seismic response of bridges—case studies.” Rep. No. FHWA-RD-78-157, Earthquake Engrg. Res. Ctr., University of California, Berkeley, Calif.
4.
Imbsen, R., and Penzien, J. ( 1986). “Evaluation of energy absorption characteristics of highway bridges under seismic conditions.” UCB/EERC-84/17, Vol. I, Sept., Earthquake Engrg. Res. Ctr., University of California, Berkeley, Calif.
5.
Kawashima, K., and Penzien, J. ( 1976). “Correlative investigations on theoretical and experimental dynamic behavior of a model bridge structure.” Rep. No. FHWA-RD-77-57, Earthquake Engrg. Res. Ctr., University of California, Berkeley, Calif.
6.
Marsh, M. L. ( 1991). “Effects of flexural strength variations on the seismic performance of reinforced concrete multiple column bridge bents,” Doctoral thesis, University of Washington, Seattle.
7.
McGuire J. W., Cofer, W. F., McLean D. I., and Marsh, M. L. ( 1994). “Analytical modeling of spread footing foundations for seismic analysis of bridges.” Transp. Res. Rec. 1447, Transportation Research Board, Washington, D.C., 80–92.
8.
Powell, G. H. ( 1994). “Modeling of reinforced concrete bridge column.” 3rd Caltrans Workshop, Caltrans, Sacramento, Calif.
9.
Priestley, M. J. N., and Seible, F. ( 1991). “Seismic bridge damage and retrofit to date.” Seismic Assessment and Retrofit of Bridges, Rep. No. SSRP 91/03, Dept. of Appl. Mech. and Engrg. Sci., University of California, San Diego, 13–26.
10.
Priestley, M. J. N., and Seible, F. ( 1994). “Seismic assessment of existing bridges.” Seismic Design and Retrofitting of Reinforced Concrete Bridges, Proc., 2nd Int. Workshop, Earthquake Commission of New Zealand and New Zealand National Society for Earthquake Engineering, Queenstown, New Zealand, 447–471.
11.
Priestley, M. J. N., Seible, F., and Chai, Y. H. ( 1992). “Design guidelines for assessment retrofit and repair of bridges for seismic performance.” Rep. No. SSRP-92/01, Dept. of Appl. Mech. and Engrg. Sci., University of California, San Diego, 266.
12.
Tseng, W., and Penzien, J. ( 1973). “Analytical investigations of the seismic response of long multiple-span highway bridges.” Earthquake Engrg. Res. Ctr., University of California, Berkeley, Calif.
13.
Zhang, Y. ( 1996). “Analytical evaluation of retrofit strategies for multi-column bridges,” PhD dissertation, Dept. of Civ. and Envir. Engrg., Washington State University, Pullman, Wash.
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Received: Jul 1, 1997
Published online: May 1, 1999
Published in print: May 1999
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