Ultimate Behavior of Long-Span Cable-Stayed Bridges
Publication: Journal of Bridge Engineering
Volume 4, Issue 1
Abstract
The study described here investigates the nonlinear static and ultimate behavior of a long-span cable-stayed bridge up to failure and evaluates the overall safety of the bridge. Both geometric and material nonlinearities are involved in the analysis. The geometric nonlinearities come from the cable sag effect, axial force-bending interaction effect, and large displacement effect. Material nonlinearities arise when one or more bridge elements exceed their individual elastic limits. The example bridge is a long-span cable-stayed bridge of a 605 m central span length with steel box girder and reinforced concrete towers under construction in China. Based on the limit point instability concept, the ultimate load-carrying capacity analysis is done starting from the deformed equilibrium configuration due to bridge dead loads. The effects of the steel girder hardening and the girder support conditions on the ultimate load-carrying capacity of the bridge have been studied. The results show that the geometric nonlinearity has a much smaller effect on the bridge behavior than material nonlinearity. The overall safety of a long-span cable-stayed bridge depends primarily on the material nonlinear behavior of individual bridge elements. The critical load analysis based on the bifurcation point instability concept greatly overestimated the safety factor of the bridge. The ultimate load-carrying capacity analysis and overall safety evaluation of a long-span cable-stayed bridge should be based on the limit point instability concept and must trace the load-deformation path of the bridge from applied loads to failure.
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References
1.
Baron, F., and Venkatesan, M. S. (1971). “Nonlinear analysis of cable and truss structures.”J. Struct. Div., ASCE, 97(6), 1143–1166.
2.
Bathe, K. J., and Bolourchi, S. ( 1979). “Large displacement analysis of three-dimensional beam structures.” Int. J. Numer. Methods in Engrg., 14, 961–986.
3.
Boonyapinyo, V., Yamada, H., and Miyata, T. (1994). “Nonlinear structural instability of long-span cable-stayed bridges under gravity and wind loads.”J. Struct. Engrg., 40, 040A, 295–308 (in English).
4.
Como, M. ( 1985). “Static behavior of long span cable-stayed bridges.” Int. J. Solids and Struct., 21(8), 831–850.
5.
Ernst, J. H. ( 1965). “Der E-Modul von Seilen unter berucksichtigung des Durchhanges.” Der Bauingenieur, 40(2), 52–55 (in German).
6.
Fleming, J. F. ( 1979). “Nonlinear static analysis of cable-stayed bridge structures.” Comp. and Struct., 10(4), 621–635.
7.
Gimsing, N. J. ( 1983). Cable supported bridges: concept and design. Wiley, New York.
8.
Kanok-Nukulchai, W., and Guan, H. ( 1993). “Nonlinear modelling of cable-stayed bridges.” J. Struct. Steel Res., 26, 249–266.
9.
Krishna, P., Arya, S., and Agrawal, T. P. (1985). “Effect of cable stiffness on cable-stayed bridges.”J. Struct. Engrg., ASCE, 111(9), 2008–2020.
10.
Nakai, H., Kitada, T., Ohminami, R., and Nishimura, T. ( 1985). “Elasto-plastic and finite displacement analysis of cable-stayed bridges.” Mem. Fac. Engrg., Osaka University, 26, 251–271 (in English).
11.
Nazmy, A. S., and Abdel-Ghaffar, A. M. ( 1990a). “Three-dimensional nonlinear static analysis of cable-stayed bridges.” Comp. and Struct., 34(2), 257–271.
12.
Nazmy, A. S., and Abdel-Ghaffar, A. M. ( 1990b). “Nonlinear earthquake response analysis of long-span cable-stayed bridges: Applications.” Earthquake Engrg. Struct. Dyn., 19, 63–76.
13.
Podolny, W., and Fleming, J. F. (1972). “History development of cable-stayed bridges.”J. Struct. Div., ASCE, 98(9), 2079–2095.
14.
Ren, W. X. ( 1997). “Nonlinear static and seismic behavior of long span cable-stayed bridges.” Res. Rep. No. 2, Department of Civil Engineering, Nagoya Institute of Technology, Nagoya, Japan.
15.
Riks, E. ( 1979). “An incremental approach to the solution of snapping and buckling problems.” Int. J. Solids and Struct., 15, 529–551.
16.
Seif, S. P., and Dilger, W. H. (1990). “Nonlinear analysis and collapse load of P/C cable-stayed bridges.”J. Struct. Engrg., ASCE, 116(3), 829–849.
17.
Tang, M. C. (1976). “Buckling of cable-stayed girder bridges.”J. Struct. Div., ASCE, 102(9), 1675–1684.
18.
Washizu, K. ( 1982). Variational methods in elasticity and plasticity, 3rd Ed., Pergamon, U.K.
Information & Authors
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Published In
Journal of Bridge Engineering
Volume 4 • Issue 1 • February 1999
Pages: 30 - 37
History
Received: Jun 19, 1997
Published online: Feb 1, 1999
Published in print: Feb 1999
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