High Performance Steel Bridges for the Next Century

High Performance Steel Bridges for the Next Century
John W. Fisher and Robert J. Dexter

Modern processing techniques can produce high-strength low-alloy steel which is relatively inexpensive, very tough, and not susceptible to hydrogen cracking and can therefore cut fabrication costs. Hydrogen cracking of overmatching weld metal remains a problem but the use of undermatched welds may be a solution. High-performance steels are ideal for and readily implemented in applications involving one-sided welding and field welding, members requiring extraordinary ductility. and repair and retrofitting work. The challenges to extensive and efficient use of high-performance steel in bridges and other structures includedeflection, vibration. compression stability, and fatigue limit states. Changes in the form of individual members. the overall configuration of the structural system. and the method of construction may be required to overcome some of these challenges. The increase in reliability accrued from the remarkable toughness and ductility of these steels could be used to justify designs which are less redundant but are simple and economical.

This paper was a plenary presentation at the 1993 TMS Fall Meeting

Publisher: TMS
Product Format: PDF
Pages: 11-17
Date Published: September 1, 1993
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