Reliability of Highway Girder Bridges
Publication: Journal of Structural Engineering
Volume 117, Issue 8
Abstract
Reliablity procedures are developed for girder bridges. Load models are based on the available statistical data. The derivation of load models is described in other papers. Resistance models are developed by simulations using the available test results for materials and components. The girder behavior is described by a moment curvature relationship. Bridge capacity is determined in terms of the maximum truck load before failure. The analysis is performed for a single unit truck, a semitrailer, and combinations of these trucks. For a given truck position, the load is gradually increased until the deformation (maximum deflection) exceeds the critical level. The developed resistance models are used in the reliability analysis. Reliability indices are calculated for noncomposite and composite steel girders, reinforced concrete T‐beams, and prestressed concrete girders. The calculations are performed for girders and structural systems. Reliability indices for the system are higher than for girders. The effect of correlation between girder strengths is analyzed. Girder bridges behave as parallel systems. Sensitivity functions are developed for various parameters related to the considered girders. The developed approach is demonstrated on typical girder bridges.
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References
1.
Agarwal, A. C., and Wolkowicz, M. (1976). Interim report on 1975 commercial vehicle survey. Res. and Development Div., Ministry of Transp. and Communications, Downsview, Ontario.
2.
Ellingwood, B., Galambos, T. V., MacGregor, J. G., and Cornell, C. A. (1980). “Development of a probability based load criterion for American National Standard A58.” Report 577, Nat. Bureau of Standards, Washington, D.C.
3.
Hwang, E.‐S., and Nowak, A. S. (1991). “Simulation of dynamic load for bridges.” J. Struct. Engrg., ASCE, 117(5), 1413–1434.
4.
Kennedy, L. D. J., and Baker, K. A. (1984). “Resistance factors for steel highway bridges.” Can. J. Civ. Engrg., 11(2), 324–334.
5.
Moses, P., and Garson, R. (1973). “Probability theory for highway bridge fatigue stresses.” Report SMSMD No. 50, Div. of Solid Mech., Structures and Mech. Design, Case Western Reserve Univ., Cleveland, Ohio.
6.
Nowak, A. S., and Hong, Y.‐K. (1991). “Bridge live load models.” J. Struct. Engrg., ASCE, 117(9).
7.
Rackwitz, R., and Fiessler, B. (1978). “Structural reliability under combined random load sequences.” Comput. Struct., 9(5), 489–494.
8.
Siriaksorn, A. (1980). “Serviceability and reliability analysis of partially prestressed concrete beams,” thesis presented to the University of Illinois, at Chiago, Illinois, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
9.
Standard specification for highway bridges. (1989). American Association of State Highway and Transportation Officials, Washington, D.C.
10.
Tabsh, S. W. (1990). “Reliability‐based sensitivity analysis of girder bridges,” thesis presented to the University of Michigan, at Ann Arbor, Mich., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
11.
Tantawi, H. M. (1986). “Ultimate strength of highway girder bridges,” thesis presented to the University of Michigan, at Ann Arbor, Mich., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
12.
Thoft‐Christensen, P., and Baker, M. J. (1982). Structural reliability theory and its applications. Springer‐Verlag, New York, N.Y.
13.
Zhou, J.‐H., and Nowak, A. S. (1988). “Integration formulas to evaluate functions of random variables.” Struct. Saf., 5(4), 267–284.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 8 • August 1991
Pages: 2372 - 2388
Copyright
Copyright © 1991 ASCE.
History
Published online: Aug 1, 1991
Published in print: Aug 1991
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