A Damage Detection Method for Cable-Stayed Bridges Using Displacement Responses and Mahalanobis Distance

Articles in Press

Document Type : Regular Paper

Authors

1 Department of Civil Engineering, Faculty of Engineering, University of Qom, Qom, Iran.

2 Department of Civil Engineering, University of Qom, Qom, Iran

3 Department of Civil Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.

10.22075/jrce.2024.33273.1995

Abstract

Given the crucial role of cable-stayed bridges in infrastructure, continuous health monitoring throughout their lifespan is imperative. To achieve this purpose, a method for detecting damage in cable-stayed bridges under loading is presented, utilizing the Mahalanobis distance calculated from phase portraits of deck displacement responses. In this method, damage is identified by analyzing variations in the Mahalanobis distance index curve between intact and damaged states. This method is validated for effectiveness through a numerical case study. The case study involves damage design in the deck and cables of the Puqian cable-stayed bridge. The results demonstrate that this method can efficiently detect the damage location in the cable-stayed bridge and exhibits anti-noise capability in identifying the location of the damaged cables. This method can serve as a rapid and continuous monitoring tool for damage detection in cable-stayed bridges, ensuring minimal disruption to traffic, relying solely on the responses of the bridge deck displacements.

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Journal of Rehabilitation in Civil Engineering

Articles in Press, Accepted Manuscript
Available Online from 04 August 2024

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History

  • Receive Date: 12 February 2024
  • Revise Date: 26 May 2024
  • Accept Date: 01 August 2024

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