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Non-welding-connecting-key steel-concrete combined structure of outwards-folded lug plates

A combined structure, no welding technology, applied in building structures, buildings, etc., can solve the problems of stress concentration, easy fatigue, welding deformation, etc., and achieve the effect of strong fatigue resistance and excellent shear resistance.

Active Publication Date: 2013-12-04
HANGZHOU BOSHU CIVIL ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of welding deformation, stress concentration, and easy fatigue in the conventional steel-concrete joints in the prior art, which are mostly welded, the invention provides a method of directly turning the lug plate on the steel plate and turning the hole left As a through hole for concrete and through steel bars, the everted steel plate acts as a baffle for resisting shear force. The entire connection does not use any welding or any auxiliary steel plate, which has strong fatigue resistance, shear resistance and excellent economy. Unique outward-turned lug plate without welding connection key steel concrete composite structure

Method used

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  • Non-welding-connecting-key steel-concrete combined structure of outwards-folded lug plates
  • Non-welding-connecting-key steel-concrete combined structure of outwards-folded lug plates
  • Non-welding-connecting-key steel-concrete combined structure of outwards-folded lug plates

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The steel-concrete composite structure without welded connection key of the turned-out lug plate, such as figure 1 , 2 As shown, it includes a steel plate 2, an everted lug 3 and concrete 1. The said everted lug 3 is formed by cutting the steel plate 2 and then turning it out. , the eversion ear plate 3 is more than two pieces, and the eversion ear plate 3 is poured in the concrete.

[0024] The everted lugs 3 are located on both sides of the steel plate 1 . A through hole 31 is provided on the everted ear plate 3 . The through hole 31 is pierced with a through steel bar 5 . Surplus hole reinforcing bar 4 is worn in surplus hole 21.

[0025] The remaining hole 21 is pierced with the reinforcing bar 4 for the remaining hole, and the reinforcing bar 5 and the reinforcing bar 4 for the remaining hole are intersected.

[0026] The radius of the corner between the everted ear plate and the steel plate is 5 times the thickness of the plate. The eversion ear plate is for...

Embodiment 2

[0029] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the minimum included angle between the plane where the eversion ear plate is located and the plane where the steel plate is located is 0°-90°. If calculated according to the angle of 180°, the optimal angle between the plane of the everted lug plate and the plane of the steel plate is 30°-150°.

[0030] The minimum included angle between the plane where the lugs are turned outward and the horizontal plane is 0°-90°. The turning direction of the everted ear plate 3, except for the part that needs to pass through the steel bar 5 and the remaining hole steel bar 4, is regularly distributed. The rules are in any orientation. Such irregular random arrangement is more conducive to the eversion lug plate 3 to improve the connection strength between the steel plate and the concrete, and to play a better shear resistance effect.

[0031] The radius of the corner between the everted ear ...

Embodiment 3

[0033] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the steel plate 2 is a corrugated steel web. The radius of the corner between the everted ear plate and the steel plate is 18 times the thickness of the plate. If the corner radius is too small, the steel plate will be severely damaged, and if the corner radius is too large, it will not be able to effectively resist shear force or directly shear concrete.

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Abstract

The invention relates to huge civil engineering and discloses a non-welding-connecting-key steel-concrete combined structure of outwards-folded lug plates. The non-welding-connecting-key steel-concrete combined structure of the outwards-folded lug plates comprises a steel plate (2), the outwards-folded lug plates (3) and concrete (1), wherein the outwards-folded lug plates (3) are formed by outwards folding the steel plate (2) after a part of the steel plate (2) is cut, remaining holes (21) formed after the lug plates are folded outwards are reserved in the steel plate (2), the number of the outwards-folded lug plates (3) is more than two, and the outwards-folded lug plates (3) are poured in the concrete. According to the non-welding-connecting-key steel-concrete combined structure, the steel plate is directly folded outwards to form the lug plates, the holes reserved by outward folding serve as penetrating holes for concrete and penetrating of steel bars, the outwards-folded steel plate serves as a baffle for resisting to shearing force, no welding or assisting steel plate is adopted in the whole combined structure, and the combined structure has strong fatigue resistance, shearing resisting capacity and good economical efficiency.

Description

technical field [0001] The invention relates to large civil engineering, in particular to a steel-concrete composite structure of an outward-turned lug plate without a welding connection key. Background technique [0002] Most of the traditional connectors are connected by welding, and its welding deformation, stress concentration and fatigue are all important reasons for the deformation, stress concentration and fatigue of the connection key and its steel-concrete composite structure. Contents of the invention [0003] Aiming at the disadvantages of welding deformation, stress concentration, and easy fatigue in the conventional steel-concrete joints in the prior art, which are mostly welded, the invention provides a method of directly turning the lug plate on the steel plate and turning the hole left As a through hole for concrete and through steel bars, the everted steel plate acts as a baffle for resisting shear force. The entire connection does not use any welding or a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/41
Inventor 孙天明喻文杰
Owner HANGZHOU BOSHU CIVIL ENG TECH
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