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Steel-concrete composite structure shear connector, construction method and shear composite structure

A technology of shear connectors and composite structures, which is applied in the fields of building construction connectors, steel-concrete composite structure shear connectors, and shear composite structures, and can solve problems such as residual tensile stress and unfavorable fatigue safety of beam components , to achieve the effect of ensuring fatigue performance, ensuring welding and processing quality, and fixing and stabilizing

Active Publication Date: 2021-02-26
SHANGHAI RES INST OF BUILDING SCI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for members subjected to repeated tensile stress, such as beam members in bridges or high-speed rail station buildings, shear connectors such as welded studs will cause greater stress concentration, resulting in higher residual tensile stress, introducing inevitable welding Defects, which are extremely detrimental to the fatigue safety of beam members

Method used

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  • Steel-concrete composite structure shear connector, construction method and shear composite structure
  • Steel-concrete composite structure shear connector, construction method and shear composite structure
  • Steel-concrete composite structure shear connector, construction method and shear composite structure

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A steel-concrete composite structure shear connector, comprising an upper splint 1, a lower splint 2, a pin shaft 3, a high-strength bolt 4, a stud 5, and an H-shaped steel beam 6; each side of the upper splint 1 is connected to a The lower splint 2 is hinged, and the lower splint 2 is in the shape of a curved surface. After rotating inwardly around the hinge point, it encloses the flange 61 of the H-shaped steel beam 6; the upper splint 1 and the lower splint 2 are located on the wing. The corresponding parts on the outside of the edge 61 are connected and fastened by the high-strength bolts 4, so that the upper splint 1 and the lower splint 2 clamp the flange 61; Stud 5.

[0031] In this example, see Figure 1-4 , the middle part of the upper splint 1 has a downwardly concave radian, and the part corresponding to the high-strength bolt 4 has an upwardly convex radian, so that the gap between the upper splint 1 and the lower splint 2 at the corresponding part of the h...

Embodiment 2

[0043] In this embodiment, the part of the steel-concrete composite structure shear connector and its construction method are the same as the first embodiment.

[0044] For the part of the shear combined structure that is different from embodiment one, the specific description is as follows:

[0045] see Figure 4 , a shear composite structure, the above-mentioned steel-concrete composite structure shear connector is fixedly arranged on the flange 61 of the single end of the H-shaped steel beam 6, the upper splint 1, the stud 5, and the high-strength bolt 4 is pre-embedded and fixed in the concrete beam, so that the web 62 of the H-shaped steel beam is perpendicular to the concrete beam, and the flange 61 is attached to the concrete beam.

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Abstract

The invention relates to a steel-concrete composite structure shear connector. The shear connector comprises an upper clamping plate, lower clamping plates, hinge pins, high-strength bolts, studs andan H-shaped steel beam, wherein the two sides of the upper clamping plate are hinged to the two lower clamping plates respectively, the lower clamping plates are in a curved surface shape and clamp flanges of the H-shaped steel beam in a surrounding mode after rotating inwards around hinge points, the corresponding portions, located on the outer sides of the flanges, of the upper clamping plate and the lower clamping plates are connected and fastened through the high-strength bolts, so that the flanges are clamped by the upper clamping plate and the lower clamping plates and at least one anti-shearing stud is welded and fixed above the upper clamping plate. According to the shear connector, the anti-shearing and anti-pulling functions of the shear connector are achieved, meanwhile, a connecting piece is prevented from being directly welded to the surface of the steel beam, stress concentration is prevented, the fatigue life of the structure is prolonged, industrialized manufacturing can be achieved, welding and machining quality is guaranteed, and on-site installation is simple and convenient.

Description

technical field [0001] The invention relates to a building construction connector, specifically, a steel-concrete composite structure shear connector, a construction method and a shear composite structure, belonging to the technical field of civil engineering composite structures. Background technique [0002] The steel-concrete composite structure combines the advantages of the steel structure and the concrete structure, and has a series of advantages such as high bearing capacity, high rigidity, excellent seismic performance, good fire prevention and corrosion resistance, material saving, and rapid construction. has a wide range of applications. In order to ensure that steel and concrete work together, the combined connection between the two is particularly important. At present, in the composite structure, shear connectors such as studs are generally welded on the steel frame so as to work together with the concrete. However, for members subjected to repeated tensile st...

Claims

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Application Information

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IPC IPC(8): E04C3/293E01D19/00
CPCE04C3/293E01D19/00
Inventor 肖顺许清风高润东田坤陈玲珠
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD
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