A steel-uhpc composite structure shear connector and its production and installation method

A combined structure and connector technology, applied to building components, structural elements, welding equipment, etc., can solve the problems of easy cracking of stud nail caps, low material utilization rate, insufficient shear strength, etc., and achieve relative slippage of the interface The effect of small quantity, shortened construction period and high rigidity

Active Publication Date: 2022-07-01
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a traditional stud shear member with insufficient shear strength, weak stud root, low material utilization rate of steel and UHPC, and easy cracking at the stud cap. A steel-UHPC composite structure shear connector with high shear strength, high rigidity, simple construction process, and low engineering cost and its manufacturing and installation method

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  • A steel-uhpc composite structure shear connector and its production and installation method
  • A steel-uhpc composite structure shear connector and its production and installation method
  • A steel-uhpc composite structure shear connector and its production and installation method

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Embodiment Construction

[0046] The present invention is further described below with reference to specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0047] For the convenience of description, the relative positional relationship of each component, such as: upper, lower, left, right, etc., are described according to the layout direction of the drawings in the specification, and do not limit the structure of this patent.

[0048] like figure 1 - image 3 As shown, an embodiment of the steel-UHPC composite structural shear connector of the present invention includes four shaped steel bars 1 formed by bending high-ductility hot-rolled ribbed steel bars, and the two ends of the shaped steel bars 1 are straight sections 11. The middle part is an arc section 13, the straight section 11 and the arc section 13 are smoothly connected by a transition section 12, and the four shaped steel bars 1 are spliced ​​orthogonally to each other to form a mouth-sha...

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Abstract

The invention discloses a steel-UHPC composite structure shear connector and a manufacturing and installation method thereof. The steel-UHPC composite structure comprises a forming steel bar and a stud. The straight section and the arc section are smoothly connected by a transition section, the shaped steel bars are four, and the four shaped steel bars are mutually orthogonally spliced ​​to form a mouth-shaped structure, and the four shaped steel bars are straight. The segments are located in the same horizontal plane, the arc-shaped segments are arranged vertically upward, and the pegs are symmetrically arranged on the four corners of the inner side of the mouth-shaped structure. The upper surface of the steel beam is provided with a U-shaped groove, the straight section of the shaped steel bar is placed in the groove, and the straight section and the steel beam are connected by double-sided groove welding. The invention can realize the firm connection between the steel beam and the UHPC board, so that the material properties of steel and ultra-high performance concrete can be fully utilized.

Description

technical field [0001] The invention relates to bridge engineering, in particular to a steel-UHPC (ultra-high-performance concrete) composite structure shear connector and a manufacturing and installation method thereof. Background technique [0002] At present, most of the long-span bridge structures are steel-concrete composite structures, which fully combine the performance of steel bridges and concrete bridges. Pavement cracking and steel-concrete joint surface voids and other diseases will affect the safety and service life of the structure. Ultra-high performance concrete (UHPC for short) is a cement-based composite material based on the principle of maximum compaction. It has excellent mechanical properties (compressive strength is generally above 120MPa, tensile strength is generally 7-10MPa) and durability. Moreover, ultra-high performance concrete can effectively solve the cracking problem of steel bridge decks at the negative moment position, and is considered to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/01E01D19/00E01D21/00B23K37/00B23K31/02E01D101/24E01D101/30
CPCE01D19/00E01D21/00B23K37/00B23K31/02E01D2101/24E01D2101/30
Inventor 刘扬曾丹曹磊鲁乃唯陈方怀
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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