Determination of abutment support conditions in an 80-year-old RC bridge

Nicholas Haritos; Tom J. Chalko

doi:10.1117/12.259148

13 November 1996 Determination of abutment support conditions in an 80-year-old RC bridge

Nicholas Haritos, Tom J. Chalko

Proceedings Volume 2946, Nondestructive Evaluation of Bridges and Highways; (1996) https://doi.org/10.1117/12.259148
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

Abstract

This paper presents an application of experimental modal analysis testing technique for evaluating the structural properties of Fuge's bridge--a reinforced concrete (RC) bridge continuous over three spans which has been in-service since 1915 and later widened in 1939. The technique was able to identify the departure from the encastre support condition at the abutments and the damping properties for most significant modes of vibration. Result for the experimentally identified modal characteristics enabled the construction of a reliable finite element method model that could then be used with some degree of confidence for the prediction of the structural behavior of the bridge and its load carrying capacity. The advantages of dynamic testing as a tool for the identification of the in-service conditions of ageing bridge superstructures has been clearly demonstrated from this experience.

Citation Download Citation

Nicholas Haritos and Tom J. Chalko "Determination of abutment support conditions in an 80-year-old RC bridge", Proc. SPIE 2946, Nondestructive Evaluation of Bridges and Highways, (13 November 1996); https://doi.org/10.1117/12.259148

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