Development of a bio-inspired bridge health monitoring system

Tzu-Kang Lin*, C. A. Tsai, M. Y. Shen, K. C. Chang, C. S. Lin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A bio-inspired bridge structural health monitoring (SHM) system to evaluate the scouring depth of bridges by measuring the dynamic response of superstructure only is developed. The main objective of this research is develop an effective bridge SHM system to meet the urgent necessity of monitoring the large amount of old and aging bridges in the world. To solve the unique and complicated problem, the dynamic scouring effect is carefully considered in the bio-inspired bridge SHM system. The array expression data format is proposed for the development of the SHM algorithm to transplant the Deoxyribonucleic acid (DNA) array concept from molecular biology to the field of SHM. A two-tier auto-regression with exogenous (AR-ARX) process is used to extract the expression array from the recorded ambient vibration response. The scouring depth of the bridge is then determined by the proposed SHM algorithm based on Naïve Bayes (NB). To verify the performance and reliability of the SHM algorithm, a series of experiment on a scaled down single-column bridge model with dynamic scour impact under flooding was conducted with various settings of initial scour depth to clarify the complicated fluid-solid-coupling effect. Test results from the dynamic flooding test showed that the scouring depth of the bridge can be reliably identified by the proposed SHM system. The performance of the bio-inspired bridge SHM system has been successfully demonstrated.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2011
Subtitle of host publicationCondition-Based Maintenance and Intelligent Structures - Proceedings of the 8th International Workshop on Structural Health Monitoring
Pages1772-1779
Number of pages8
StatePublished - 1 Dec 2011
Event8th International Workshop on Structural Health Monitoring 2011: Condition-Based Maintenance and Intelligent Structures - Stanford, CA, United States
Duration: 13 Sep 201115 Sep 2011

Publication series

NameStructural Health Monitoring 2011: Condition-Based Maintenance and Intelligent Structures - Proceedings of the 8th International Workshop on Structural Health Monitoring
Volume2

Conference

Conference8th International Workshop on Structural Health Monitoring 2011: Condition-Based Maintenance and Intelligent Structures
CountryUnited States
CityStanford, CA
Period13/09/1115/09/11

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