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    Experimental Study on Steel Jacket–Concrete Composite Connections

    Source: Journal of Bridge Engineering:;2017:;Volume ( 022 ):;issue: 004
    Author:
    Xin Nie
    ,
    Yue Yang
    ,
    Jiansheng Fan
    ,
    Y. L. Mo
    ,
    Jianguo Nie
    DOI: 10.1061/(ASCE)BE.1943-5592.0001007
    Publisher: American Society of Civil Engineers
    Abstract: Steel–concrete composite frame bridges have larger structural stiffness, lower cost, and faster construction speed than traditional bridges because a combination of steel–concrete composite girders, concrete piers, and steel–concrete composite connections is used. In this type of composite bridge, the most important part is the connection joint between the steel–concrete composite girder and the concrete pier, which is formed by a steel plate, core concrete, shear connectors, and rebars. Taking a five-opening (110 m × 5) steel–concrete composite frame bridge with five 40-m-high piers as a prototype structure, three specimens, including two steel jacket–concrete composite connections with different construction details and one traditional rebar connection, were designed to study the load transfer mechanism in different types of composite connections. Results of the reversed cyclic load tests on the three specimens indicated that the steel jacket composite connections have better structural performance than the rebar connection, and bending moments in steel–concrete composite girders can be directly transferred to concrete piers via steel jackets. Furthermore, the interrelationship between the anchorage length of longitudinal rebars in the core concrete and the length of the steel jacket is revealed by strains measured by strain gauges, from which the design method of the steel jacket–concrete composite connections is recommended.
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      Experimental Study on Steel Jacket–Concrete Composite Connections

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4241793
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    contributor authorXin Nie
    contributor authorYue Yang
    contributor authorJiansheng Fan
    contributor authorY. L. Mo
    contributor authorJianguo Nie
    date accessioned2017-12-16T09:21:38Z
    date available2017-12-16T09:21:38Z
    date issued2017
    identifier other%28ASCE%29BE.1943-5592.0001007.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4241793
    description abstractSteel–concrete composite frame bridges have larger structural stiffness, lower cost, and faster construction speed than traditional bridges because a combination of steel–concrete composite girders, concrete piers, and steel–concrete composite connections is used. In this type of composite bridge, the most important part is the connection joint between the steel–concrete composite girder and the concrete pier, which is formed by a steel plate, core concrete, shear connectors, and rebars. Taking a five-opening (110 m × 5) steel–concrete composite frame bridge with five 40-m-high piers as a prototype structure, three specimens, including two steel jacket–concrete composite connections with different construction details and one traditional rebar connection, were designed to study the load transfer mechanism in different types of composite connections. Results of the reversed cyclic load tests on the three specimens indicated that the steel jacket composite connections have better structural performance than the rebar connection, and bending moments in steel–concrete composite girders can be directly transferred to concrete piers via steel jackets. Furthermore, the interrelationship between the anchorage length of longitudinal rebars in the core concrete and the length of the steel jacket is revealed by strains measured by strain gauges, from which the design method of the steel jacket–concrete composite connections is recommended.
    publisherAmerican Society of Civil Engineers
    titleExperimental Study on Steel Jacket–Concrete Composite Connections
    typeJournal Paper
    journal volume22
    journal issue4
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001007
    treeJournal of Bridge Engineering:;2017:;Volume ( 022 ):;issue: 004
    contenttypeFulltext
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