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Reliability Evaluation of a PSC Highway Bridge Based on Resistance Capacity Degradation Due to a Corrosive Environment

School of Civil and Environmental Engineering, Yonsei University, 50 Yonsei-ro Seodaemun-gu, Seoul 03722, Korea
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Academic Editor: Stefano Invernizzi
Appl. Sci. 2016, 6(12), 423; https://doi.org/10.3390/app6120423
Received: 8 November 2016 / Revised: 6 December 2016 / Accepted: 7 December 2016 / Published: 10 December 2016
This paper presents a method for evaluating the reliability of an in-service highway bridge that considers the resistance capacity loss due to various corrosive environments. To demonstrate the application of the suggested method, a pre-stressed concrete-I (PSC-I) type girder was selected as a sample bridge. An analytical procedure was developed to quantitatively evaluate the performance degradation of a PSC-I girder bridge considering the traffic conditions, corrosive environment, and crack damage. The bridge performance was evaluated by considering traffic conditions, including the annual average daily traffic volume, heavy vehicle volume, and corrosive environment (mild, normal, and severe). To calculate the resistance capacity, all variables regarding the materials and sections were considered through probabilistic variances, Monte Carlo simulation, and the statistical characteristics of the resistance. The results showed that the performance degradation is sensitive to the important parameters of the traffic conditions and corrosive environment, which may decrease the structural reliability and lead to bridge failure. Cracks in a PSC-I girder may accelerate the performance degradation and affect the reliability level of the bridge. Therefore, a maintenance plan should be rationally considered depending on the site environment. View Full-Text
Keywords: reliability; resistance capacity; highway bridge; corrosive environment; traffic condition reliability; resistance capacity; highway bridge; corrosive environment; traffic condition
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Kim, S.-H.; Choi, J.-G.; Ham, S.-M.; Heo, W.-H. Reliability Evaluation of a PSC Highway Bridge Based on Resistance Capacity Degradation Due to a Corrosive Environment. Appl. Sci. 2016, 6, 423.

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