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    Structural Parameter Identification of Ancient Stone Arch Bridge via Three-Dimensional Laser Ranger Scanning

    Source: Journal of Performance of Constructed Facilities:;2022:;Volume ( 036 ):;issue: 005::page 04022041
    Author:
    Yang Deng
    ,
    Yange Jia
    ,
    Yuhang Li
    ,
    Aiqun Li
    DOI: 10.1061/(ASCE)CF.1943-5509.0001752
    Publisher: ASCE
    Abstract: Stone arch bridges are symbols of a shared civil engineering heritage worldwide, but they suffer from damage caused by various natural disasters that have occurred during their long service. The basis of ancient bridge preservation is the current situation assessment. This study proposes a structural parameter identification method for stone arch bridges via three-dimensional (3D) laser scanning. An automatic algorithm of arch axis extraction from massive point cloud data is developed and applied to the 800-year-old Lugou Bridge (LGB) in Beijing, and its structural parameters are identified from the extracted arch axis. The results reveal that the LGB’s arch axis is close to the arc curve. The axis extraction is accurate and the identification method is reliable, when compared to field measurement. The relative deformation between the upstream and downstream sides of each arch and the relative deviations of the clear rise and span between two longitudinally symmetric arches are manifestly large. This study extends the current identification methods for bridge heritage based on a 3D point cloud and provides a useful basis upon which to protect ancient arch bridges.
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      Structural Parameter Identification of Ancient Stone Arch Bridge via Three-Dimensional Laser Ranger Scanning

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4286103
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    • Journal of Performance of Constructed Facilities

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    contributor authorYang Deng
    contributor authorYange Jia
    contributor authorYuhang Li
    contributor authorAiqun Li
    date accessioned2022-08-18T12:09:27Z
    date available2022-08-18T12:09:27Z
    date issued2022/07/13
    identifier other%28ASCE%29CF.1943-5509.0001752.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4286103
    description abstractStone arch bridges are symbols of a shared civil engineering heritage worldwide, but they suffer from damage caused by various natural disasters that have occurred during their long service. The basis of ancient bridge preservation is the current situation assessment. This study proposes a structural parameter identification method for stone arch bridges via three-dimensional (3D) laser scanning. An automatic algorithm of arch axis extraction from massive point cloud data is developed and applied to the 800-year-old Lugou Bridge (LGB) in Beijing, and its structural parameters are identified from the extracted arch axis. The results reveal that the LGB’s arch axis is close to the arc curve. The axis extraction is accurate and the identification method is reliable, when compared to field measurement. The relative deformation between the upstream and downstream sides of each arch and the relative deviations of the clear rise and span between two longitudinally symmetric arches are manifestly large. This study extends the current identification methods for bridge heritage based on a 3D point cloud and provides a useful basis upon which to protect ancient arch bridges.
    publisherASCE
    titleStructural Parameter Identification of Ancient Stone Arch Bridge via Three-Dimensional Laser Ranger Scanning
    typeJournal Article
    journal volume36
    journal issue5
    journal titleJournal of Performance of Constructed Facilities
    identifier doi10.1061/(ASCE)CF.1943-5509.0001752
    journal fristpage04022041
    journal lastpage04022041-10
    page10
    treeJournal of Performance of Constructed Facilities:;2022:;Volume ( 036 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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