Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Practical Steel Confinements for Wildly Spaced Clustered Large Stud Shear Connectors in Composite Bridge Deck Panel Systems
Composite bridge deck systems consist of concrete deck panels supported on top of steel girders. Clustered stud shear connectors are utilized for transferring composite actions between these members. In the last 10 years, some attempts have been made to increase the spacing of clustered large shear studs in this system from 24 inches to 48 inches, which can benefit in reducing cost and time for new and replacement bridge construction. Nevertheless, increasing the spacing of clustered studs causes high concentrated composite action and requires effective confinement to prevent local failures and separation of members. This paper presents the experimental and analytical investigation of different types of steel confinements for clustered large shear studs with 48-inch spacing in the full-depth precast concrete panel supported on steel girders. Different types of steel confinements including steel tubes and layers of steel bars were developed and tested with sixteen push-off specimens and two full-scale beams for static and fatigue loads. The experimental investigation has shown the suitability of steel confinements for widely spaced clustered large shear studs to maintain full composite action between the deck and the girders. Finite Element Analyses (FEA) of the push-off and full-scale beam models were utilized for investigating the behaviors of steel confinement and the concrete surrounding.
Practical Steel Confinements for Wildly Spaced Clustered Large Stud Shear Connectors in Composite Bridge Deck Panel Systems
Composite bridge deck systems consist of concrete deck panels supported on top of steel girders. Clustered stud shear connectors are utilized for transferring composite actions between these members. In the last 10 years, some attempts have been made to increase the spacing of clustered large shear studs in this system from 24 inches to 48 inches, which can benefit in reducing cost and time for new and replacement bridge construction. Nevertheless, increasing the spacing of clustered studs causes high concentrated composite action and requires effective confinement to prevent local failures and separation of members. This paper presents the experimental and analytical investigation of different types of steel confinements for clustered large shear studs with 48-inch spacing in the full-depth precast concrete panel supported on steel girders. Different types of steel confinements including steel tubes and layers of steel bars were developed and tested with sixteen push-off specimens and two full-scale beams for static and fatigue loads. The experimental investigation has shown the suitability of steel confinements for widely spaced clustered large shear studs to maintain full composite action between the deck and the girders. Finite Element Analyses (FEA) of the push-off and full-scale beam models were utilized for investigating the behaviors of steel confinement and the concrete surrounding.
Practical Steel Confinements for Wildly Spaced Clustered Large Stud Shear Connectors in Composite Bridge Deck Panel Systems
Sriboonma, Krissachai (Autor:in) / Badie, Sameh S. (Autor:in)
Structures Congress 2010 ; 2010 ; Orlando, Florida, United States
Structures Congress 2010 ; 3216-3227
18.05.2010
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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