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    Modeling and Separation of Thermal Effects from Cable-Stayed Bridge Response

    Source: Journal of Bridge Engineering:;2019:;Volume ( 024 ):;issue: 005
    Author:
    Xiang Xu
    ,
    Qiao Huang
    ,
    Yuan Ren
    ,
    Dan-Yang Zhao
    ,
    Juan Yang
    ,
    De-Yi Zhang
    DOI: 10.1061/(ASCE)BE.1943-5592.0001387
    Publisher: American Society of Civil Engineers
    Abstract: This article presents a practical multivariate linear-based model for modeling and separation of thermal effects from the cable-stayed bridge response. First, the discrete typical thermal loadings, which are the variables in the linear model, are derived from the real-time recorded temperature measurements. Then, weight coefficients (i.e., normalized response corresponding to each type of temperature action) in the model are acquired by considering the simulation results of the numerical models. Finally, the Third Nanjing Yangtze River Bridge is employed as a case study to validate the effectiveness of the proposed methodology. The reliability of the proposed multivariate linear-based model is verified on the measurements of deflection and temperature during the bridge-closure time window. The maximum error between the predicted and measured deflection is 5.6 mm, which accounts for the resolution of the connected pipe system. This study not only helps to understand the thermal field of such large-span cable-stayed bridges but also develops an effective model that separates thermal response and can benefit real-time quasi-static-based anomaly detection for large-scale bridges.
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      Modeling and Separation of Thermal Effects from Cable-Stayed Bridge Response

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4259890
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    contributor authorXiang Xu
    contributor authorQiao Huang
    contributor authorYuan Ren
    contributor authorDan-Yang Zhao
    contributor authorJuan Yang
    contributor authorDe-Yi Zhang
    date accessioned2019-09-18T10:39:25Z
    date available2019-09-18T10:39:25Z
    date issued2019
    identifier other%28ASCE%29BE.1943-5592.0001387.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4259890
    description abstractThis article presents a practical multivariate linear-based model for modeling and separation of thermal effects from the cable-stayed bridge response. First, the discrete typical thermal loadings, which are the variables in the linear model, are derived from the real-time recorded temperature measurements. Then, weight coefficients (i.e., normalized response corresponding to each type of temperature action) in the model are acquired by considering the simulation results of the numerical models. Finally, the Third Nanjing Yangtze River Bridge is employed as a case study to validate the effectiveness of the proposed methodology. The reliability of the proposed multivariate linear-based model is verified on the measurements of deflection and temperature during the bridge-closure time window. The maximum error between the predicted and measured deflection is 5.6 mm, which accounts for the resolution of the connected pipe system. This study not only helps to understand the thermal field of such large-span cable-stayed bridges but also develops an effective model that separates thermal response and can benefit real-time quasi-static-based anomaly detection for large-scale bridges.
    publisherAmerican Society of Civil Engineers
    titleModeling and Separation of Thermal Effects from Cable-Stayed Bridge Response
    typeJournal Paper
    journal volume24
    journal issue5
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001387
    page04019028
    treeJournal of Bridge Engineering:;2019:;Volume ( 024 ):;issue: 005
    contenttypeFulltext
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