Selection of optimal alternative for bridge monitoring: Weighted objective decision analysis

B. Dubey, A. Bagchi, S. Alkass

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Advanced monitoring techniques can help identifying problems in a structure so that appropriate maintenance and management decisions can be taken to deal with deteriorating infrastructure. But due to the scarcity of financial resources it is not always possible to use the best technology available, at the same time the safety and reliability of the structure can not be compromised. To satisfy these goals, the decision makers and owners need to select a solution which is optimal. In this paper a comparison is made among three monitoring methods (alternatives), (1) Visual Inspection, (2) Periodic Structural Health Monitoring (SHM) and (3) Continuous SHM. Using the information provided by each monitoring method, a Reliability Index (P) is calculated. This index is related to the structure's probability of failure. The reliability index provides important guidance on the condition of a structure, which can be used by the decision makers to decide on appropriate maintenance and rehabilitation strategies. The goal of this paper is to achieve the following two objectives: (a) minimization of the cost of monitoring, and (b) extracting the best value of the information provided by the monitoring system. To achieve the best balance of meeting these two objectives, Weighted Objective Decision Analysis approach has been used. The proposed methodology has been applied to an existing steel free deck continuous bridge in Canada. The periodic SHM is found to be the optimal alternative as it has the maximum relative utility.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2007
Subtitle of host publicationQuantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
EditorsFu-Kuo Chang
PublisherDEStech Publications
Pages1997-2005
Number of pages9
ISBN (Electronic)9781932078718
Publication statusPublished - 2007
Externally publishedYes
Event6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007 - Stanford, United States
Duration: Sep 11 2007Sep 13 2007

Publication series

NameStructural Health Monitoring 2007: Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
Volume2

Conference

Conference6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007
Country/TerritoryUnited States
CityStanford
Period9/11/079/13/07

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Information Management

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