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Design of Built Up Compression Members for Long Span Bridge Structures

by Raymond J. McCabe, Howard Needles Tammen &, Bergendoff, Fairfield, United States,



Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation

Abstract:

This paper discusses the design of built up compression members for long span bridge structures including trusses and arches. Provisions of load factor design and use of high strength steels (up to Fy = 100 ksi) will be presented. Two bridge projects will be discussed; Cooper River Bridge, a three span parallel chord steel truss (400'-800'-400') utilizing A514 steel (Fy = 100 ksi) and the Roosevelt Lake Bridge, a steel box rib arch with a span of 1,080 feet.

Subject Headings: Arch bridges | Steel bridges | Truss bridges | Span bridges | Steel structures | Trusses | Load factors

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