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    Shake Table Studies of a Concrete Bridge Pier Utilizing Pipe-Pin Two-Way Hinges

    Source: Journal of Bridge Engineering:;2011:;Volume ( 016 ):;issue: 005
    Author:
    Arash E. Zaghi
    ,
    Saiidi M. Saiid
    ,
    Saad El-Azazy
    DOI: 10.1061/(ASCE)BE.1943-5592.0000191
    Publisher: American Society of Civil Engineers
    Abstract: Pipe-pin two-way hinge details were recently developed by California Department of Transportation (Caltrans) to eliminate moments while transferring shear and axial loads from integral bridge bent caps to reinforced concrete bridge columns. The hinges consist of a steel pipe that is anchored in the column with an extended segment into the cap beam. There is no specific design guideline for these hinges, and the current design method is primeval and only controls shear failure of the steel pipe. In this study, a rational method is proposed on the basis of the possible limit states to obtain the lateral capacity of these hinges. To validate the proposed method, a large-scale two-column bridge pier model utilizing pipe-pin hinges was tested on a shake table. The model was subjected to increasing levels of one of the Sylmar-Northridge 1994 earthquake records. A comprehensive analytical modeling of the pier was also performed using OpenSees; for this purpose, a macro model was developed for pipe-pin hinges in this study. The experimental results confirmed that the hinges designed on the basis of the proposed guideline remain elastic with no damage. The good correlation between the analytical and experimental data indicated that the macro model and other modeling assumptions were appropriate.
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      Shake Table Studies of a Concrete Bridge Pier Utilizing Pipe-Pin Two-Way Hinges

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    • Journal of Bridge Engineering

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    contributor authorArash E. Zaghi
    contributor authorSaiidi M. Saiid
    contributor authorSaad El-Azazy
    date accessioned2017-05-08T21:35:03Z
    date available2017-05-08T21:35:03Z
    date copyrightSeptember 2011
    date issued2011
    identifier other%28asce%29be%2E1943-5592%2E0000193.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/56725
    description abstractPipe-pin two-way hinge details were recently developed by California Department of Transportation (Caltrans) to eliminate moments while transferring shear and axial loads from integral bridge bent caps to reinforced concrete bridge columns. The hinges consist of a steel pipe that is anchored in the column with an extended segment into the cap beam. There is no specific design guideline for these hinges, and the current design method is primeval and only controls shear failure of the steel pipe. In this study, a rational method is proposed on the basis of the possible limit states to obtain the lateral capacity of these hinges. To validate the proposed method, a large-scale two-column bridge pier model utilizing pipe-pin hinges was tested on a shake table. The model was subjected to increasing levels of one of the Sylmar-Northridge 1994 earthquake records. A comprehensive analytical modeling of the pier was also performed using OpenSees; for this purpose, a macro model was developed for pipe-pin hinges in this study. The experimental results confirmed that the hinges designed on the basis of the proposed guideline remain elastic with no damage. The good correlation between the analytical and experimental data indicated that the macro model and other modeling assumptions were appropriate.
    publisherAmerican Society of Civil Engineers
    titleShake Table Studies of a Concrete Bridge Pier Utilizing Pipe-Pin Two-Way Hinges
    typeJournal Paper
    journal volume16
    journal issue5
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0000191
    treeJournal of Bridge Engineering:;2011:;Volume ( 016 ):;issue: 005
    contenttypeFulltext
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