Field Test of a Multigirder Concrete Bridge of 25m Span

Abstract:

A load test on a multigirder concrete bridge of 25m Span having a noncomposite deck slab is described. The bridge was designed to have eight simple supported spans, each consisting of a cross section with six RC T beam. Through analyzing the static and dynamic character of bridge structures, calculating efficiency ratio of load test, pickign up the results of observation points, it was determined that the girders were acting non-compositely with the concrete deck and that significant restraint was being developed at the bearing supports. Results of analyses conducted using the numerical model were compared to the measured response and found to be quite similar. By comparing the various load ratings, and by considering the nature of the unintended composite action and support restraint, decisions regarding the determination of a safe bridge rating are discussed.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 2553-2556
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.2553
• Online since: May 2012
• Authors: Jian Rong Yang, Zuo Xiong Zheng, Xiao Dong Yang, Hong Da Bai
• Keywords: Bridge Load Test, Dynamic Amplification Factor, Efficiency Ratio, FEM Model, Multigirder Bridge, RC T Beam

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DOI: 10.1016/j.conbuildmat.2004.04.025