Field Testing of Railroad Flatcar Bridges (TR-498)

Project Details
STATUS

Completed

START DATE

06/01/03

END DATE

08/31/07

RESEARCH CENTERS InTrans, BEC, CTRE
SPONSORS

Iowa Department of Transportation
Iowa Highway Research Board

Researchers
Principal Investigator
Wayne Klaiber

Faculty Affiliate

Co-Principal Investigator
Terry Wipf

Faculty Affiliate

Student Researcher(s)
Holly Boomsma
Kristine Palmer

About the research

Based on the conclusions of IHRB Project TR-444, Demonstration Project Using Railroad Flat Car Bridges for Low Volume Road Bridges, additional research on the use of RRFC bridges was undertaken. This portion of the project investigated the following: –Different design and rating procedures –Additional single span configurations plus multiple span configurations –Different mechanisms for connecting adjacent RRFCs and the resulting lateral load distribution factors –Sheet pile abutments –Behavior RRFCs that had been strengthened so that they could be used on existing abutments. A total of eight RRFC bridges were tested (five single span bridges, two two-span bridges, and one three-span bridge). Based on the results of this study a simplified design and rating procedure has been developed for the economical replacement bridge alternative. In Volume 1, this volume, the results from the testing of four single span RRFC bridges are presented, while in Volume 2 the results from the testing of the strengthened single span bridge plus the three multiple span bridges are presented.

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