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- W608642283 abstract "A curved girder bridge research study is currently being conducted at the Federal Highway Administration Turner-Fairbank Highway Research Center (TFHRC). As part of this project a full-scale bridge has been erected and is being tested in the TFHRC structures laboratory. The structure consists of three 90-ft (27-m) long curved steel bridge girders that are joined together with several cross frames. These cross frames were specifically designed for this project and are of a non-typical configuration. Steel pipes with an outer diameter of about 4.5 in. (11.4 cm) are bolted together to make up these cross frames. Each end of the various sections of pipe is welded to a flange that contains bolt holes for connection to the bridge girder. Installation of the cross frames between two girders is difficult due to alignment problems. As a result, the cross frame members have to be forced into place. This installation process causes unwanted stresses to be introduced into the cross frame members. As part of the bridge testing, a method to determine the amount of locked-in stresses in these cross frames was desired. Ultrasonic stress measurement techniques and Barkhausen noise stress measurement techniques were examined to measure the cross frame stresses. Both methods have the potential to allow for quick, convenient measurements at various points during the curved girder bridge testing. The results of applying both stress measurement techniques to the cross frame members are discussed in this paper." @default.
- W608642283 created "2016-06-24" @default.
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- W608642283 date "2000-01-01" @default.
- W608642283 modified "2023-09-27" @default.
- W608642283 title "ULTRASONIC STRESS MEASUREMENTS ON CURVED GIRDER BRIDGE CROSS FRAME MEMBERS" @default.
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