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Structural Health Monitoring Based Time- Dependent Reliabilityanalysis of Concrete Bridge

Khairul Anuar, Shahid and Mohammad Amirulkhairi, Zubir and Aizat, Alias (2012) Structural Health Monitoring Based Time- Dependent Reliabilityanalysis of Concrete Bridge. In: International Conference on Civil Engineering 2012, 28-30 August 2012 , Park Royal Penang. . (Unpublished)

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Abstract

The presence of chloride ions in concrete is the most important cause of steel reinforcing corrosion. Corrosion can lead to structural damage and needs to be managed effectively for better allocation of resources and effective bridge management. The application of de-icing salt or atmospheric exposure in marine environment could be the cause of corrosion initiation. This paper reviews chloride ingress prediction model and presents methodology to improve confidence in predicting corrosion concentration taking into account time dependent reliability analysis. Modeling uncertainty is often associated with limited knowledge which it can be reduced by increasing the availability of data. Additional information through bridge inspection and monitoring will increase confidence in prediction models. Monte Carlo simulation with Latin Hypercube Sampling is used to estimate prior and posterior performance prediction for chloride concentration. Bayesian Updating is used to incorporate prior beliefs about the condition and performance of the bridge together with data obtained through inspections and health monitoring to produce more quantitative data. The application of Bayesian Updating is shown to considerably reduce uncertainties associated with performance prediction. By using this approach, it will lead to the prediction of structural performance with increased confidence.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Concrete Bridge; Corrosion; Chloride; Time- dependent Reliability; Monte- Carlo; Bayesian Updating
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty/Division: Faculty of Civil Engineering & Earth Resources
Depositing User: Siti Aishah Ghani
Date Deposited: 08 Nov 2012 02:04
Last Modified: 19 Feb 2018 07:17
URI: http://umpir.ump.edu.my/id/eprint/3021
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