Effects of added mass on indirect Structural Health Monitoring of bridges

Rich May*, Thomas Reynolds, Hwa Kian Chai, Robert Corbally, Abdollah Malekjafarian, Yong Lu

*Corresponding author for this work

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

Abstract / Description of output

The concept of using vehicles as dynamic exciters and sensor carriers for indirect Structural Health Monitoring (iSHM) of bridges has gained considerable interest in recent years. Proposed frameworks typi- cally rely on the assumption that there will be a time and cost benefit in comparison to the temporary or permanent installation of sensors fixed directly to the subject bridge structure. However, the indirect approach suffers from drawbacks including artefacts related to environmental and operational variation (EOV), the mitigation of which is a major ongo- ing research effort worldwide. The presence of other vehicles during the traversal of the sensor-carrying vehicle contributes to EOV but has re- ceived little attention to date. Acting as sprung masses, these additional vehicles can change the effective and observable modal parameters of the bridge. Mitigating this with temporary road closures is contrary to the low-cost high-value minimal-interruption goal of iSHM.
This paper presents initial outcomes from a programme of laboratory- scale physical testing and Finite Element (FE) modelling, aiming to in- crease knowledge of the effects of additional vehicles on the visibility of bridge modal parameters and damage.
Original languageEnglish
Title of host publicationExperimental Vibration Analysis for Civil Engineering Structures
Subtitle of host publicationEVACES 2023 - Volume 2
ISBN (Electronic)978-3-031-39117-0
ISBN (Print)978-3-031-39116-3, 978-3-031-39119-4
Publication statusPublished - 29 Aug 2023

Publication series

NameLecture Notes in Civil Engineering
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565


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