Techno Press
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Structural Monitoring and Maintenance   Volume 3, Number 1, March 2016, pages 51-69
DOI: http://dx.doi.org/10.12989/smm.2016.3.1.051
 
Structural monitoring and identification of civil infrastructure in the United States
Satish Nagarajaiah and Kalil Erazo

 
Abstract     [Full Text]
    Monitoring the performance and estimating the remaining useful life of aging civil infrastructure in the United States has been identified as a major objective in the civil engineering community. Structural health monitoring has emerged as a central tool to fulfill this objective. This paper presents a review of the major structural monitoring programs that have been recently implemented in the United States, focusing on the integrity and performance assessment of large-scale structural systems. Applications where response data from a monitoring program have been used to detect and correct structural deficiencies are highlighted. These applications include (but are not limited to): i) Post-earthquake damage assessment of buildings and bridges; ii) Monitoring of cables vibration in cable-stayed bridges; iii) Evaluation of the effectiveness of technologies for retrofit and seismic protection, such as base isolation systems; and iv) Structural damage assessment of bridges after impact loads resulting from ship collisions. These and many other applications show that a structural health monitoring program is a powerful tool for structural damage and condition assessment, that can be used as part of a comprehensive decision-making process about possible actions that can be undertaken in a large-scale civil infrastructure system after potentially damaging events.
 
Key Words
    structural health monitoring; system identification; civil infrastructure systems; structural damage assessment
 
Address
Satish Nagarajaiah and Kalil Erazo: Department of Civil and Environmental Engineering, Rice University, Houston TX 77005, USA
 

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