Conceptual Superstructural Systems for Short Span Bridgesby Hota V.S. GangaRao, (M.ASCE), Assoc. Prof.; Dept. of Civ. Engrg., West Virginia Univ., Morgantown, W. Va.,
Narendra B. Taly, (M.ASCE), Asst. Prof.; Dept. of Civ. Engrg., California State Univ., Los Angeles, Calif.; formerly, Grad. Research Asst. at West Virginia Univ., Morgantown, W. Va.,
Serial Information: Transportation Engineering Journal of ASCE, 1978, Vol. 104, Issue 1, Pg. 15-29
Document Type: Journal Paper
Development and design of several innovative prefabricated superstructural systems for short span less than 75 ft (23 m) highway bridges, including the current state-of-the-art of construction, have been presented. These include cold-formed steel box girder, composite cold-formed steel box girder, prestressed T-box girder, waffle slab, space truss, and rigid frame (flat arch) systems, etc. A numerical rating scheme has been developed to evaluate the relative superiority of one bridge system over the other, and recommendations have been made accordingly. It is found that a superstructure formed from a stiffened plate supported over steel stringers is superior to several other systems considered herein. Prefabricated cold-formed box girder, prestressed concrete T-box girder, rigid frame (flat arch) bridge, and waffle slab systems are very efficient and economical systems that merit implementation as demonstration projects.
Subject Headings: Span bridges | Cold-formed steel | Superstructures | Girder bridges | Infrastructure construction | Box girders | Plate girders | Steel frames | Highway and road design | Bridge design
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