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Title: SIMPLIFIED ANALYSIS OF HEAT-CURVED STEEL GIRDERS
Accession Number: 00968537
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Heat curving is commonly used in the fabrication of curved structural steel bridge girders. A two-dimensional superposition analysis known as the Duhamel Analogy was used for numerical modeling in the development of the AASHTO code provisions. This iterative analysis can take into consideration multiple heating-cooling cycles, initial residual stresses, temperature-dependent material properties, and the nonlinear temperature distribution across the girder cross section. A simplified analysis based on the Duhamel Analogy that can be carried out by using hand calculations is described. The curvatures obtained by this method are within 15% of the measured curvatures, which are very comparable to the results obtained by using the Duhamel Analogy or the three-dimensional, nonlinear, finite element solution. The background, basis, and steps required for the proposed analysis are described; and an illustrative numerical example is presented. The proposed analysis may be used to estimate curvatures or to determine the maximum fabrication temperature and the heating width for a single heating-cooling cycle for steels such as high-performance steel not covered by the current AASHTO provisions.
Supplemental Notes: This paper appears in Transportation Research Record No. 1861, Construction 2003.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Gergess, A NSen, RPagination: p. 101-114
Publication Date: 2003
Serial: ISBN: 0309085985
Features: Figures
(7)
; References
(13)
; Tables
(4)
TRT Terms: Uncontrolled Terms: Subject Areas: Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls
Files: TRIS, TRB, ATRI
Created Date: Jan 9 2004 12:00AM
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