Monitoring fatigue life in concrete bridge deck slabs

J. Newhook; V. Limaye

doi:10.1117/12.716970

19 April 2007 Monitoring fatigue life in concrete bridge deck slabs

J. Newhook, V. Limaye

Proceedings Volume 6531, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007; 65310R (2007) https://doi.org/10.1117/12.716970
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

Concrete bridge deck slabs are the most common form of bridge deck construction in short and medium span bridge structures in North America. Understanding and monitoring the condition of these bridge decks is an important component of a bridge management strategy. Progressive deterioration due to fatigue occurs in concrete decks due to the large number of cycles of heavy wheels loads and normally manifests itself as the progressive growth of cracks in the top and underside of the deck slab. While some laboratory fatigue testing programs have been reported in the literature, there is very little information on proposed techniques to monitor this phenomenon. This paper discusses the issue of how fatigue monitoring may be included as part of a structural health monitoring system for bridges. The paper draws upon previously published experimental results to identify the main characteristics of fatigue damage and structural response for concrete bridge deck slabs. Several means of monitoring this response are then evaluated and monitoring methods are proposed. A specific field structure monitoring program is used to illustrate the application of the concept. The cases study examines several sensor systems and discusses the various limitations and needs in this area. The results are of interest to both the general area of structural health monitoring as well as fatigue monitoring specifically.

Citation Download Citation

J. Newhook and V. Limaye "Monitoring fatigue life in concrete bridge deck slabs", Proc. SPIE 6531, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007, 65310R (19 April 2007); https://doi.org/10.1117/12.716970

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