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    Identifying Modal Parameters of a Multispan Bridge Based on High-Rate GNSS–RTK Measurement Using the CEEMD–RDT Approach

    Source: Journal of Bridge Engineering:;2021:;Volume ( 026 ):;issue: 008::page 04021049-1
    Author:
    Yanbo Niu
    ,
    Yun Ye
    ,
    Weijian Zhao
    ,
    Yuanfeng Duan
    ,
    Jiangpeng Shu
    DOI: 10.1061/(ASCE)BE.1943-5592.0001754
    Publisher: ASCE
    Abstract: This article aims to develop a hybrid approach of complementary ensemble empirical mode decomposition (CEEMD) and random decrement technique (RDT) for identifying the modal parameters (i.e., natural frequency and damping ratio) of structures using high-rate (50 Hz) global navigation satellite system and real-time kinematic (GNSS–RTK) measurement data. The framework of the proposed approach included two stages: (1) CEEMD was first used to derive a set of single-component signals, called intrinsic mode functions (IMFs); and (2) RDT was employed to extract the free decaying signals from the IMFs, including the main frequency information of structures. Subsequently, a three-story shear building model and an actual multispan bridge were used to validate the proposed approach. Additionally, a finite-element (FE) model of the bridge was built for comparing with the experimental case. Finally, the results indicated that the GNSS–RTK technique is capable of monitoring the dynamic displacements of multispan bridges with reliable accuracy. The proposed method performed better than the classical natural excitation technique—eigensystem realization algorithm (NExT–ERA) and stochastic subspace identification (SSI) algorithm—and was viable in practical applications.
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      Identifying Modal Parameters of a Multispan Bridge Based on High-Rate GNSS–RTK Measurement Using the CEEMD–RDT Approach

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4270679
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    contributor authorYanbo Niu
    contributor authorYun Ye
    contributor authorWeijian Zhao
    contributor authorYuanfeng Duan
    contributor authorJiangpeng Shu
    date accessioned2022-01-31T23:58:45Z
    date available2022-01-31T23:58:45Z
    date issued8/1/2021
    identifier other%28ASCE%29BE.1943-5592.0001754.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4270679
    description abstractThis article aims to develop a hybrid approach of complementary ensemble empirical mode decomposition (CEEMD) and random decrement technique (RDT) for identifying the modal parameters (i.e., natural frequency and damping ratio) of structures using high-rate (50 Hz) global navigation satellite system and real-time kinematic (GNSS–RTK) measurement data. The framework of the proposed approach included two stages: (1) CEEMD was first used to derive a set of single-component signals, called intrinsic mode functions (IMFs); and (2) RDT was employed to extract the free decaying signals from the IMFs, including the main frequency information of structures. Subsequently, a three-story shear building model and an actual multispan bridge were used to validate the proposed approach. Additionally, a finite-element (FE) model of the bridge was built for comparing with the experimental case. Finally, the results indicated that the GNSS–RTK technique is capable of monitoring the dynamic displacements of multispan bridges with reliable accuracy. The proposed method performed better than the classical natural excitation technique—eigensystem realization algorithm (NExT–ERA) and stochastic subspace identification (SSI) algorithm—and was viable in practical applications.
    publisherASCE
    titleIdentifying Modal Parameters of a Multispan Bridge Based on High-Rate GNSS–RTK Measurement Using the CEEMD–RDT Approach
    typeJournal Paper
    journal volume26
    journal issue8
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001754
    journal fristpage04021049-1
    journal lastpage04021049-14
    page14
    treeJournal of Bridge Engineering:;2021:;Volume ( 026 ):;issue: 008
    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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