Autostress Design of Steel Bridges
Publication: Journal of Structural Engineering
Volume 109, Issue 1
Abstract
Current methods of steel‐bridge design, including the AASHTO Load Factor Design method, are based on elastic analyses with only limited implicit recognition of the ability of such members to adjust for. the effects of yielding. The Autostress method, which is an extension of the Load Factor method, explicitly considers these effects at Overload and Maximum Load. At Overload, autostresses and automoments caused by local plastic deformations assure elastic behavior; i.e., shakedown, after initial passages of heavy permit loads. Limit‐state criteria for riding quality and concrete cracking are considered. At Maximum Load, the strength of continuous bridge members is determined with a new plastic‐design method for noncompact members. The new design criteria can be used for the design of new bridges and for the rating of existing bridges.
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References
1.
Adams, P. F., Lay, M. G., and Galambos, T. V., “Experiments on High‐Strength Steel Members,” Fritz Laboratory Report No. 297.8, Lehigh Univ., Bethlehem, Pa., July, 1964.
2.
Carskaddan, P. S., “Autostress Design of Highway Bridges, Phase 3: Interior‐Support Model Test,” AISI Project 188, The American Iron and Steel Institute, Committee of Structural Steel Producers and Committee of Steel Plate Producers, Washington, D.C., Feb. 11, 1980.
3.
Carskaddan, P. S. and Leffler, R. E., “Autostress Design of Highway Bridges, Phase 2B: Design Studies,” AISI Project 18, The American Iron and Steel Institute, Committee of Structural Steel Producers and Committee of Steel Plate Producers, Washington, D.C., June 8, 1977.
4.
Carskaddan, P. S., and Mion, R. L. “Rating of Steel Bridges with the Autostress Method,” Proceedings of the Specialty Conference on Bridge Maintainance/Rehabilitation, Morgantwon, W.V., Aug. 13–16, 1980, pp. 63–83.
5.
Climenhaga, J. J., and Johnson, R. P., “Local Buckling in Continuous Composite Beams,” The Structural Engineer, Sept., 1972.
6.
Commentary on Plastic Design in Steel, Manual No. 41, 2nd ed., American Society of Civil Engineers, ASCE, Committee on Plasticity Related to Design, 1971.
7.
Grubb, M. A., and Carskaddan, P. S., “Autostress Design of Highway Bridges, Phase 3: Initial Moment‐Rotation Tests,” AISI Project 188, The American Iron and Steel Institute, Committee of Structural Steel Producers and Committee of Steel Plate Producers, Washington, D.C., Apr. 18, 1979.
8.
Grubb, M. A., and Carskaddan, P. S., “Autostress Design of Highway Bridges, Phase 3: Moment‐Rotation Requirements,” AISI Project 188, The American Iron and Steel Institute, Committee of Structural Steel Producers and Committee of Steel Plate Producers, Washington, D.C., May 14, 1981.
9.
Haaijer, G., and Carskaddan, P. S., “Autostress Design of Continuous Steel Bridge Members,” Proceedings of the Canadian Structural Enginerring Conference, Canadian Steel Industries Construction Council, Montreal, Feb., 1980, pp. 1–20.
10.
Haaijer, G., Carskaddan, P. S., and Grubb, M. A., “Plastic Design with Noncompact Sections Including Composite Bridge Members,” Proceedings of Structural Stability Research Council, Lehigh Univ., Bethlehem, Pa., 1980, pp. 29–31.
11.
Holtz, N. M., and Kulak, G. L., “Web Slenderness Limits for Compact Beams,” Structural Engineering Report No. 43, University of Alberta, Edmonton, Alberta, Canada, Mar., 1973.
12.
Holt, N. M., and Kulak, G. L., “Web Slenderness Limits for Non‐Compact Beams,” Structural Engineering Report No. 51, University of Alberta, Edmonton, Alberta, Canada, Aug., 1975.
13.
Lorin, P. A., “Optimization of Structures on the Basis of the Plastic Behavior of Material,” Final Report of the 8th Congress, International Association for Bridge and Structural Engineering, New York, N.Y., 1968.
14.
Lukey, A. F., and Adams, P. F., “Rotation Capacity of Beams Under Moment Gradient,” Journal of the Structural Division, ASCE, Vol. 95, No. ST6, June, 1969, pp. 1173–1188.
15.
Specifications for the Design, Fabrication, and Erection of Structural Steel for Buildings, American Institute of Steel Construction, Chicago, Ill., Feb. 19, 1969.
16.
Standard Specification for Highway Bridges, 12th, American Association of State Highway and Transportation Officials, Washington, D.C., 1977.
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Copyright © 1983 ASCE.
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Published online: Jan 1, 1983
Published in print: Jan 1983
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