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    Modal Analysis and Condition Evaluation of Substructures for Simply Supported High-Speed Railway Bridge Based on a Simplified Model

    Source: Journal of Bridge Engineering:;2022:;Volume ( 027 ):;issue: 008::page 04022058
    Author:
    Jiawang Zhan
    ,
    Chuang Wang
    ,
    Yuzhi Yan
    ,
    Lu Deng
    ,
    Wenjun Zhu
    ,
    Jianlei Liu
    DOI: 10.1061/(ASCE)BE.1943-5592.0001900
    Publisher: ASCE
    Abstract: The condition of substructures in high-speed railway (HSR) bridges is crucial to the safety of the railway operation. However, research on the condition evaluation of substructures in HSR bridges is very limited. In this paper, a simplified model for a single pier that considers the effect of a pier–beam coupling will be proposed to simulate the multiorder vibrations in the local pier–beam system by distributing the mass of the beam to the top of the adjacent piers. A systematic procedure that is based on the simplified model and finite-element (FE) model updating will be adopted for the modal analysis and condition evaluation of the bridge substructures. Numerical simulations will be conducted on a 10-span simply supported HSR bridge to validate the proposed model and method. Furthermore, field measurements will be conducted on an HSR bridge to assess the health condition of the substructures. The results show that the modal frequencies and damage that were identified with the simplified model agreed well with those of the local pier–beam system. The proposed simplified model could be suitable for the modal analysis and condition evaluation of HSR bridge substructures.
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      Modal Analysis and Condition Evaluation of Substructures for Simply Supported High-Speed Railway Bridge Based on a Simplified Model

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4286631
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    • Journal of Bridge Engineering

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    contributor authorJiawang Zhan
    contributor authorChuang Wang
    contributor authorYuzhi Yan
    contributor authorLu Deng
    contributor authorWenjun Zhu
    contributor authorJianlei Liu
    date accessioned2022-08-18T12:26:33Z
    date available2022-08-18T12:26:33Z
    date issued2022/05/25
    identifier other%28ASCE%29BE.1943-5592.0001900.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4286631
    description abstractThe condition of substructures in high-speed railway (HSR) bridges is crucial to the safety of the railway operation. However, research on the condition evaluation of substructures in HSR bridges is very limited. In this paper, a simplified model for a single pier that considers the effect of a pier–beam coupling will be proposed to simulate the multiorder vibrations in the local pier–beam system by distributing the mass of the beam to the top of the adjacent piers. A systematic procedure that is based on the simplified model and finite-element (FE) model updating will be adopted for the modal analysis and condition evaluation of the bridge substructures. Numerical simulations will be conducted on a 10-span simply supported HSR bridge to validate the proposed model and method. Furthermore, field measurements will be conducted on an HSR bridge to assess the health condition of the substructures. The results show that the modal frequencies and damage that were identified with the simplified model agreed well with those of the local pier–beam system. The proposed simplified model could be suitable for the modal analysis and condition evaluation of HSR bridge substructures.
    publisherASCE
    titleModal Analysis and Condition Evaluation of Substructures for Simply Supported High-Speed Railway Bridge Based on a Simplified Model
    typeJournal Article
    journal volume27
    journal issue8
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001900
    journal fristpage04022058
    journal lastpage04022058-12
    page12
    treeJournal of Bridge Engineering:;2022:;Volume ( 027 ):;issue: 008
    contenttypeFulltext
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