Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM).

    Research output: Contribution to conferencePaper

    Abstract

    In recent years, Structural Health Monitoring (SHM) systems have been developed to monitor bridge deterioration, assess real load levels and hence extend bridge life and safety. A road bridge is only safe if the stresses caused by the passing vehicles are less than the capacity of the bridge to resist them. Conventional SHM systems can be used to improve knowledge of the bridges capacity to resist stresses but generally give no information on the causes of any increase in stresses (based on measuring strain). The concept of in Bridge Weigh-in-Motion (B-WIM) is to establish axle loads, without interruption to traffic flow, by using strain sensors at a bridge soffit and subsequently converting the data to real time axle loads or stresses. Recent studies have shown it would be most beneficial to develop a portable system which can be easily attached to existing and new bridge structures for a specified monitoring period. The sensors could then be left in place while the data acquisition can be moved for various other sites. Therefore it is necessary to find accurate sensors capable of capturing peak strains under dynamic load and suitable methods for attaching these strain sensors to existing and new bridge structures. Additionally, it is important to ensure accurate strain transfer between concrete and steel, the adhesives layer and the strain sensor. This paper describes research investigating the suitably of using various sensors for the monitoring of concrete structures under dynamic vehicle load. Electrical resistance strain (ERS) gauges, vibrating wire (VW) gauges and fibre optic sensors (FOS) are commonly used for SHM. A comparative study will be carried out to select a suitable sensor for a bridge Weigh in Motion System. This study will look at fixing methods, durability, scanning rate and accuracy range. Finite element modeling is used to predict the strains which are then validated in laboratory trials.
    Original languageEnglish
    Publication statusPublished - 2013
    EventThe 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure - Hong Kong, China
    Duration: 09 Dec 201311 Dec 2013

    Conference

    ConferenceThe 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure
    CountryChina
    CityHong Kong
    Period09/12/201311/12/2013

    Fingerprint

    Weigh-in-motion (WIM)
    Structural health monitoring
    Sensors
    Axles
    Acoustic impedance
    Monitoring
    Fiber optic sensors
    Dynamic loads
    Strain gages
    Concrete construction
    Gages
    Deterioration
    Loads (forces)
    Data acquisition
    Adhesives
    Durability

    Cite this

    Lydon, M., Taylor, S., Robinson, D., & Doherty, C. (2013). Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM).. Paper presented at The 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Hong Kong, China.
    Lydon, Myra ; Taylor, Susan ; Robinson, Desmond ; Doherty, Ciaran. / Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM). Paper presented at The 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Hong Kong, China.
    @conference{67712075cb0e4242b7942a305d083174,
    title = "Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM).",
    abstract = "In recent years, Structural Health Monitoring (SHM) systems have been developed to monitor bridge deterioration, assess real load levels and hence extend bridge life and safety. A road bridge is only safe if the stresses caused by the passing vehicles are less than the capacity of the bridge to resist them. Conventional SHM systems can be used to improve knowledge of the bridges capacity to resist stresses but generally give no information on the causes of any increase in stresses (based on measuring strain). The concept of in Bridge Weigh-in-Motion (B-WIM) is to establish axle loads, without interruption to traffic flow, by using strain sensors at a bridge soffit and subsequently converting the data to real time axle loads or stresses. Recent studies have shown it would be most beneficial to develop a portable system which can be easily attached to existing and new bridge structures for a specified monitoring period. The sensors could then be left in place while the data acquisition can be moved for various other sites. Therefore it is necessary to find accurate sensors capable of capturing peak strains under dynamic load and suitable methods for attaching these strain sensors to existing and new bridge structures. Additionally, it is important to ensure accurate strain transfer between concrete and steel, the adhesives layer and the strain sensor. This paper describes research investigating the suitably of using various sensors for the monitoring of concrete structures under dynamic vehicle load. Electrical resistance strain (ERS) gauges, vibrating wire (VW) gauges and fibre optic sensors (FOS) are commonly used for SHM. A comparative study will be carried out to select a suitable sensor for a bridge Weigh in Motion System. This study will look at fixing methods, durability, scanning rate and accuracy range. Finite element modeling is used to predict the strains which are then validated in laboratory trials.",
    author = "Myra Lydon and Susan Taylor and Desmond Robinson and Ciaran Doherty",
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    language = "English",
    note = "The 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure ; Conference date: 09-12-2013 Through 11-12-2013",

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    Lydon, M, Taylor, S, Robinson, D & Doherty, C 2013, 'Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM).', Paper presented at The 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Hong Kong, China, 09/12/2013 - 11/12/2013.

    Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM). / Lydon, Myra; Taylor, Susan; Robinson, Desmond; Doherty, Ciaran.

    2013. Paper presented at The 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Hong Kong, China.

    Research output: Contribution to conferencePaper

    TY - CONF

    T1 - Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM).

    AU - Lydon, Myra

    AU - Taylor, Susan

    AU - Robinson, Desmond

    AU - Doherty, Ciaran

    PY - 2013

    Y1 - 2013

    N2 - In recent years, Structural Health Monitoring (SHM) systems have been developed to monitor bridge deterioration, assess real load levels and hence extend bridge life and safety. A road bridge is only safe if the stresses caused by the passing vehicles are less than the capacity of the bridge to resist them. Conventional SHM systems can be used to improve knowledge of the bridges capacity to resist stresses but generally give no information on the causes of any increase in stresses (based on measuring strain). The concept of in Bridge Weigh-in-Motion (B-WIM) is to establish axle loads, without interruption to traffic flow, by using strain sensors at a bridge soffit and subsequently converting the data to real time axle loads or stresses. Recent studies have shown it would be most beneficial to develop a portable system which can be easily attached to existing and new bridge structures for a specified monitoring period. The sensors could then be left in place while the data acquisition can be moved for various other sites. Therefore it is necessary to find accurate sensors capable of capturing peak strains under dynamic load and suitable methods for attaching these strain sensors to existing and new bridge structures. Additionally, it is important to ensure accurate strain transfer between concrete and steel, the adhesives layer and the strain sensor. This paper describes research investigating the suitably of using various sensors for the monitoring of concrete structures under dynamic vehicle load. Electrical resistance strain (ERS) gauges, vibrating wire (VW) gauges and fibre optic sensors (FOS) are commonly used for SHM. A comparative study will be carried out to select a suitable sensor for a bridge Weigh in Motion System. This study will look at fixing methods, durability, scanning rate and accuracy range. Finite element modeling is used to predict the strains which are then validated in laboratory trials.

    AB - In recent years, Structural Health Monitoring (SHM) systems have been developed to monitor bridge deterioration, assess real load levels and hence extend bridge life and safety. A road bridge is only safe if the stresses caused by the passing vehicles are less than the capacity of the bridge to resist them. Conventional SHM systems can be used to improve knowledge of the bridges capacity to resist stresses but generally give no information on the causes of any increase in stresses (based on measuring strain). The concept of in Bridge Weigh-in-Motion (B-WIM) is to establish axle loads, without interruption to traffic flow, by using strain sensors at a bridge soffit and subsequently converting the data to real time axle loads or stresses. Recent studies have shown it would be most beneficial to develop a portable system which can be easily attached to existing and new bridge structures for a specified monitoring period. The sensors could then be left in place while the data acquisition can be moved for various other sites. Therefore it is necessary to find accurate sensors capable of capturing peak strains under dynamic load and suitable methods for attaching these strain sensors to existing and new bridge structures. Additionally, it is important to ensure accurate strain transfer between concrete and steel, the adhesives layer and the strain sensor. This paper describes research investigating the suitably of using various sensors for the monitoring of concrete structures under dynamic vehicle load. Electrical resistance strain (ERS) gauges, vibrating wire (VW) gauges and fibre optic sensors (FOS) are commonly used for SHM. A comparative study will be carried out to select a suitable sensor for a bridge Weigh in Motion System. This study will look at fixing methods, durability, scanning rate and accuracy range. Finite element modeling is used to predict the strains which are then validated in laboratory trials.

    M3 - Paper

    ER -

    Lydon M, Taylor S, Robinson D, Doherty C. Assessment Of various sensors for structural health monitoring for bridge weigh-in-motion (B-WIM).. 2013. Paper presented at The 6th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Hong Kong, China.