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Drive-by bridge damage detection using non-specialized instrumented vehicle

Drive-by bridge damage detection using non-specialized instrumented vehicle Bridge structures are subject to continuous degradation, which requires an ongoing screening to give an early warning if the bridge becomes unsafe. In recent years, many authors have investigated a shift of the instrumentation from the bridge to a passing vehicle to collect indirect measurements for the bridge responses. This approach is known by ‘drive-by’ bridge inspection. This paper introduces a new method in the drive-by bridge inspection concept which employs acceleration measurements of a non-specialized vehicle to identify the change in the bridge responses due to structural damage. Two damage indices are included in the study, the vehicle acceleration spectra and the change in the bridge displacement. The paper will use an explicit approach for solving the Vehicle-Bridge Interaction (VBI) problem to give a more accurate representation of the truck/bridge interaction. The VBI problem will be solved using LS-Dyna Finite Element Analysis (FEA) program. The bridge is represented by discretized one-dimensional (1D) FE beam elements, and by discretized two-dimensional (2D) plate bending elements. Damage is defined in this study as a change in the damping ratio and/or gradual decrease in structure stiffness. Two vehicle models are used in the study, the two-degree-of-freedom quarter car model and the four-degree-of-freedom half car model. Both smooth and rough profiles are considered in the study. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Drive-by bridge damage detection using non-specialized instrumented vehicle

ElHattab, Ahmed; Uddin, Nasim; OBrien, Eugene
Bridge Structures , Volume 12 (3-4): 12 – Jan 1, 2017
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Publisher
IOS Press
Copyright
Copyright © 2017 IOS Press and the authors. All rights reserved
ISSN
1573-2487
eISSN
1744-8999
DOI
10.3233/BRS-170106
Publisher site
See Article on Publisher Site

Abstract

Bridge structures are subject to continuous degradation, which requires an ongoing screening to give an early warning if the bridge becomes unsafe. In recent years, many authors have investigated a shift of the instrumentation from the bridge to a passing vehicle to collect indirect measurements for the bridge responses. This approach is known by ‘drive-by’ bridge inspection. This paper introduces a new method in the drive-by bridge inspection concept which employs acceleration measurements of a non-specialized vehicle to identify the change in the bridge responses due to structural damage. Two damage indices are included in the study, the vehicle acceleration spectra and the change in the bridge displacement. The paper will use an explicit approach for solving the Vehicle-Bridge Interaction (VBI) problem to give a more accurate representation of the truck/bridge interaction. The VBI problem will be solved using LS-Dyna Finite Element Analysis (FEA) program. The bridge is represented by discretized one-dimensional (1D) FE beam elements, and by discretized two-dimensional (2D) plate bending elements. Damage is defined in this study as a change in the damping ratio and/or gradual decrease in structure stiffness. Two vehicle models are used in the study, the two-degree-of-freedom quarter car model and the four-degree-of-freedom half car model. Both smooth and rough profiles are considered in the study.

Journal

Bridge Structures – IOS Press

Published: Jan 1, 2017

References

  • Using diagnostic load tests for accurate load rating of typical bridges
    Chajes
  • Enhancement of bridge live loads using weigh-in-motion data
    Sivakumar
  • Enhancement of bridge live loads based on West Virginia weigh-in-motion data
    Shoukry
  • Theoretical investigation of the use of a moving vehicle to identify bridge dynamic parameters
    McGetrick
  • The use of a dynamic truck-trailer drive-by system to monitor bridge damping
    Keenahan
  • Identification of damping in a bridge using a moving instrumented vehicle
    González
  • Drive-by damage detection in bridges using the apparent profile
    OBrien
  • Keyword User’s Manual
    LSTC