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A structure and construction method of a perforated steel plate shear key

A technology of perforated steel plate and shear key, which is applied in the direction of building structure and construction, can solve the problems that the longitudinal shear force resistance of concrete tenons cannot be repeated, the construction difficulty of penetrating steel bars, and the integrity of damage are achieved, so as to achieve pull-out resistance The effect is good, the effect of increasing the longitudinal shear resistance and increasing the contact area

Active Publication Date: 2019-08-13
GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC
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  • Abstract
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Problems solved by technology

This type of steel plate shear key with openings has its own shortcomings. For example, the concrete tenon in the shear key cannot repeatedly play a role in the longitudinal shear resistance, and when it is applied to the bending moment area, it will cause the shear force of the concrete slab along the steel plate with the opening. Cracks in the main stress direction of the key will damage the integrity, and the construction of penetrating steel bars is difficult

Method used

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  • A structure and construction method of a perforated steel plate shear key
  • A structure and construction method of a perforated steel plate shear key
  • A structure and construction method of a perforated steel plate shear key

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Embodiment

[0017] see Figure 1~3 , the structure of a kind of perforated steel plate shear key of the present invention, comprises the steel beam that is made up of steel beam flange plate 1 and steel beam web 2, is welded with T-shaped shear force key on steel beam flange plate 1, described T Shaped shear key comprises shear key flange plate 4 and has the shear key web 5 of U-shaped groove, and the thickness of described shear key web 5 is 10mm, and height is 100mm, and the opening width of U-shaped groove is 20mm, and the spacing between U-shaped grooves is 200mm. The U-shaped groove on the shear key web 5 and the steel beam flange plate 1 form a closed "door opening", and a main reinforcement 6 is arranged in the "door opening", and a closed stirrup 7 is arranged on the main reinforcement 6 .

[0018] During construction, first lay the steel beam according to the design requirements, and then weld the T-shaped shear key on the flange plate 1 of the steel beam, such as figure 1 As s...

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Abstract

The invention discloses a structure and construction method of aperture steel plate shear keys. The structure comprises a steel beam composed of a steel beam flange plate (1) and a steel beam web (2), a T-shaped shear key is welded to the steel beam flange plate (1), the T-shaped shear key comprises a shear key flange plate (4) and a shear key web (5) with U-shaped grooves, each U-shaped groove and the steel beam flange plate (1) form a closed 'door hole' in which a main bar (6) is disposed, and the main bars (6) are provided with closed hoops (7). A concrete panel and the steel beam are integrated by using the T-shaped shear key, the structure not only has the advantages of simple structure, construction convenience and good integrity but also is good in pull resistance, high in longitudinal shear resistance and particularly applicable to hogging moment areas.

Description

technical field [0001] The invention relates to a structure and a construction method of a perforated steel plate shear key, belonging to the technical field of civil engineering construction. Background technique [0002] Open-hole plate shear key was proposed by eonhardt et al. in 1987. It is a shear key in which a steel plate with round holes is embedded in concrete along the direction of force. The shear key of the open-hole plate relies on the concrete in the round hole to resist the force between the steel and the concrete. The test shows that the concrete in the hole has a great pin effect, and its final failure is the shearing of the concrete in the hole. , and there is no fatigue problem. Therefore, the shear key of the perforated plate is the key structure that connects the concrete panel and the steel beam to form a whole, and works together with the concrete, and is one of the key components of the steel-concrete composite structure. [0003] The traditional op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/38E04B1/41
Inventor 漆松占玉林吴照海代志涛郭金玲邹赵勇薛登宇李清平李新刚
Owner GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC
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