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A Composite Structure of Interfacial Composite Connected High-Performance Steel-UHPC Thin Plates

A combined structure and composite technology, used in bridge materials, architecture, bridge construction, etc., can solve the problems of complex construction process and inconvenient implementation.

Active Publication Date: 2021-05-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these measures can reduce the self-weight of the structure to a certain extent, but at the same time make the construction process complicated and difficult to implement

Method used

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  • A Composite Structure of Interfacial Composite Connected High-Performance Steel-UHPC Thin Plates
  • A Composite Structure of Interfacial Composite Connected High-Performance Steel-UHPC Thin Plates
  • A Composite Structure of Interfacial Composite Connected High-Performance Steel-UHPC Thin Plates

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Embodiment

[0026] The present invention is an interface composite connection high-performance steel-UHPC thin plate combined structural system and an interface connection technology adapted thereto. The structural system mainly includes a UHPC thin plate 2 laid on a steel beam 1 and an The large-diameter short nails 3 and embedded high-strength bolts 4, and finally the large-diameter short nails 3 and high-strength bolts 4 are embedded in the UHPC sheet 2, and the UHPC sheet 2 and the steel beam 1 are connected as a whole, and the interface is horizontally , the connectors are symmetrically arranged about the longitudinal centerline, and finally the steel beam 1 and the UHPC thin plate 2 form a new composite structure system through the interfacial composite shear connectors.

[0027] The numbers of the short nails 3 and high-strength bolts 4 are obtained by calculation. The short nails 3 and bolts 4 are arranged at equal intervals along the axis of the beam. The direction spacing is not...

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Abstract

The invention discloses an interface composite connection high-performance steel-UHPC thin plate combined structure, including steel beams, UHPC thin plates, high-strength bolts, and short nails. The surface of the steel beam is provided with N rows of reserved holes, and the high-strength bolts pass through The holes are connected to the steel beam, the short nails and high-strength bolts are arranged at equal intervals, the UHPC sheet is poured above the steel beam, the short nails and high-strength bolts are evenly distributed inside the UHPC sheet, and the present invention uses UHPC as the bridge deck material , it can reduce the self-weight of the structure and enhance the spanning ability of the structure. At the same time, when the interface adopts large-diameter short nails and high-strength bolts as shear members, the synergistic advantages of studs and bolts can be used to enhance the stiffness of the structure during use and the ductility of the limit state.

Description

technical field [0001] The invention belongs to the field of combined structures in the field of civil engineering, and in particular relates to an interface composite connection high-performance steel-UHPC thin plate combined structure. Background technique [0002] The traditional steel-concrete composite structure mainly uses steel beams and ordinary concrete bridge decks to form a combined section through shear connectors such as studs to jointly bear the force. Compared with the steel bridge structure system, the composite structure bridge can reduce the structural cost, and compared with the concrete bridge, the composite structure bridge can effectively reduce the structural weight. Therefore, this structural system gives full play to the advantages of steel structure and concrete structure in terms of construction performance and mechanical performance, and at the same time has good economy. However, studies by domestic and foreign scholars have shown that ordinary ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12E01D101/26E01D101/30
Inventor 王景全徐启智姚一鸣曾永平殷惠光
Owner SOUTHEAST UNIV