TESTING AND EVALUATING THE FRP DECK SYSTEM FOR THE DOUGLAS COUNTY BRIDGE IN WASHINGTON STATE

摘要

This paper deals with the testing of the FRP deck system supplied by Martin Marietta for the load distribution and strength with wood stringers in the laboratory and evaluation of this system in the field. This system will be used for the rehabilitation of the Chief Joseph Dam Bridge in Douglas County, Washington State. This bridge has a main span of 126 ft. supported by wooden trusses with two approach spans on one side and three approach spans on the other side. All the old wood deck for all the spans will be replaced by the FRP system. The rehabilitation work on this bridge was completed in November 2003. This bridge will be monitored for two years using the latest data acquisition technology to evaluate this FRP deck system in the field especially supported by wood stringers. The laboratory test results and the field evaluation are expected to produce the load distribution of this deck system on wood stringers. This will help the consultant and transportation engineers to design in future this type of deck system supported by wood stringers.