Behavior of Horizontally Curved Steel Highway Bridges

by Michael A. Grubb, AISC Marketing, Inc, Pittsburgh, United States,
John M. Yadlosky, AISC Marketing, Inc, Pittsburgh, United States,
Andrew W. Herrmann, AISC Marketing, Inc, Pittsburgh, United States,

Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation


Horizontally curved highway bridges represent up to 25 percent of the market for new steel-bridge construction each year. However, unanswered questions remain concerning the fundamental behavior of horizontally curved steel girders that may not be adequately addressed in current design specifications. While there has been some isolated research, a coordinated large-scale effort to study curved-girder behavior has not been undertaken in over 20 years. The FHWA and the NCHRP are launching significant research programs on curved steel bridges in late 1992 and early 1993, respectively. However, additional research is recommended to supplement these programs to ensure coverage of areas these programs cannot address. One particular area of interest that may not be addressed is field instrumentation and testing of actual in-service curved steel bridges. Field measurements can provide valuable data to complement and verify previous research. The entire curved-girder research effort must be coordinated from the start to avoid needless repetition of effort. All projects must be overseen by technically competent individuals who are willing to devote the time needed to successfully overcome all barriers to success.

Subject Headings: Steel bridges | Highway bridges | Steel structures | Infrastructure construction | Structural behavior | Curvature | Steel beams | Girder bridges

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