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    Integrated Approach to Simultaneously Determine 3D Location and Size of Rebar in GPR Data

    Source: Journal of Performance of Constructed Facilities:;2020:;Volume ( 034 ):;issue: 005
    Author:
    Zhongming Xiang
    ,
    Ge Ou
    ,
    Abbas Rashidi
    DOI: 10.1061/(ASCE)CF.1943-5509.0001502
    Publisher: ASCE
    Abstract: The precise determination of reinforcement rebar information of constructed facilities is a significant challenge faced by many practitioners in the areas of structural health monitoring (SHM), facility management (FM), and building maintenance and operation. Practitioners commonly use ground penetrating radar (GPR) to determine the horizontal location, depth, and size of rebar based on the reflections in GPR data. However, due to inherent difficulties within the GPR data, such as the unknown time zero, the existence of strong noise, and the blurry signals, simultaneously and accurately determining all three parameters is a challenging task. To tackle this issue, this paper proposes an integrated approach based on pattern recognition and curve-fitting principles to simultaneously determine rebar’s horizontal location, depth, and size. The presented method has been validated on several scanning trials of a shear wall in an in-service concrete structure. Results of conducting the experiments are promising and reveal that (1) the proposed method can identify the zero offset within the GPR scan, eliminate the noise impact in the GPR signal, and extract critical rebar information from the attenuated signal; (2) by implementing through a real-world application, this integrated method could successfully solve the coupling issue and simultaneously determine rebar’s horizontal location, depth, and size; (3) the rebars’ horizontal locations in the test scenarios are consistent, with mean absolute errors of measured depths and sizes of 6.73% and 6.19%, respectively; and (4) considering a range of each rebar size, all rebars are measured correctly.
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      Integrated Approach to Simultaneously Determine 3D Location and Size of Rebar in GPR Data

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    contributor authorZhongming Xiang
    contributor authorGe Ou
    contributor authorAbbas Rashidi
    date accessioned2022-01-30T21:27:31Z
    date available2022-01-30T21:27:31Z
    date issued10/1/2020 12:00:00 AM
    identifier other%28ASCE%29CF.1943-5509.0001502.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4268234
    description abstractThe precise determination of reinforcement rebar information of constructed facilities is a significant challenge faced by many practitioners in the areas of structural health monitoring (SHM), facility management (FM), and building maintenance and operation. Practitioners commonly use ground penetrating radar (GPR) to determine the horizontal location, depth, and size of rebar based on the reflections in GPR data. However, due to inherent difficulties within the GPR data, such as the unknown time zero, the existence of strong noise, and the blurry signals, simultaneously and accurately determining all three parameters is a challenging task. To tackle this issue, this paper proposes an integrated approach based on pattern recognition and curve-fitting principles to simultaneously determine rebar’s horizontal location, depth, and size. The presented method has been validated on several scanning trials of a shear wall in an in-service concrete structure. Results of conducting the experiments are promising and reveal that (1) the proposed method can identify the zero offset within the GPR scan, eliminate the noise impact in the GPR signal, and extract critical rebar information from the attenuated signal; (2) by implementing through a real-world application, this integrated method could successfully solve the coupling issue and simultaneously determine rebar’s horizontal location, depth, and size; (3) the rebars’ horizontal locations in the test scenarios are consistent, with mean absolute errors of measured depths and sizes of 6.73% and 6.19%, respectively; and (4) considering a range of each rebar size, all rebars are measured correctly.
    publisherASCE
    titleIntegrated Approach to Simultaneously Determine 3D Location and Size of Rebar in GPR Data
    typeJournal Paper
    journal volume34
    journal issue5
    journal titleJournal of Performance of Constructed Facilities
    identifier doi10.1061/(ASCE)CF.1943-5509.0001502
    page12
    treeJournal of Performance of Constructed Facilities:;2020:;Volume ( 034 ):;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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