Cited by 58Structural Health Monitoring TechniquesStructural Engineering and Materials AnalysisInfrastructure Maintenance and Monitoring

Regression models for structural health monitoring of welded bridge joints based on temperature, traffic and strain measurements

Farreras-Alcover, Isaac, Chryssanthopoulos, Marios K, Andersen, Jacob Egede·2015·Structural Health Monitoring

Abstract

A modelling platform based on regression analysis is developed as a novel approach to structural health monitoring of welded joints of orthotropic bridge steel decks. Monitoring outcomes from the Great Belt Bridge (Denmark) are used to develop regression models following a weighted least squares approach to characterize the normal correlation pattern between environmental conditions (daily-averaged pavement temperatures), operational loads (daily-aggregated heavy traffic counts) and a strain-based performance indicator. The developed models can be used within a structural health monitoring–based asset management framework for performance assessment (i.e. diagnosis of structural performance changes) and performance prediction (i.e. prognosis of structural performance leading to service life estimates). The main novelty of the work presented consists of the development of an algorithm based on statistical control charts related to the prediction bands of the regression models. The algorithm enables the interpretation of new monitoring data and the identification of potentially abnormal behaviours via outlier detection, as part of an envisaged ‘real-time’ performance assessment application. The proposed approach to outlier detection through structural health monitoring is finally illustrated considering actual monitoring outcomes from the bridge. This highlights the applicability of the developed modelling platform and contributes to bridging the gap between monitoring data and monitoring-based information that can lead to more effective asset management decisions.

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Crossref · 10.1177/1475921715609801

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Authors
Farreras-Alcover, I., Chryssanthopoulos, M. K., & Andersen, J. E.
Affiliations
  • COWI A/S, Kongens Lyngby, Denmark
  • University of Surrey (GB)
  • Cowi (Denmark) (DK)
Venue
Structural Health Monitoring
Published
2015-10-16
Volume
14
Issue
6
Pages
648-662
ISSN
  • 1475-9217 (ISSN-L)
  • 1741-3168
OpenAlex
W2418057341
Cited by
58
References
30
Citations by year
2026: 3 · 2025: 6 · 2024: 5 · 2023: 12 · 2022: 7 · 2021: 8 · 2020: 1 · 2019: 1 · 2018: 7 · 2017: 5 · 2016: 2 · 2013: 1
FWCI
7.72
Type
journal article
Language
en
Open access
closed
Locations
  • Structural Health Monitoring (publishedVersion)
  • Surrey Research Insight Open Access (The University of Surrey) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Structural Health Monitoring Techniques
  • Physical Sciences › Engineering › Civil and Structural Engineering › Structural Engineering and Materials Analysis
  • Physical Sciences › Engineering › Civil and Structural Engineering › Infrastructure Maintenance and Monitoring
Keywords
orthotropic steel deck, regression models, weighted least squares, pavement temperature, asset management, service life prediction, control charts, outlier detection, Great Belt Bridge

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