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Precast concrete mechanical joint and mixed connecting structure

A technology of mechanical joints and prefabricated concrete, which is applied in the direction of foundation structure engineering, construction, and sheet pile walls, etc., and can solve the problems of being unable to meet the pullout requirements of precast concrete components, unable to solve the problems of relying on pile head sealing, and reducing the pullout and shear performance , to achieve the effect of improving the success rate of plugging, improving the anti-pullout performance, and strong anti-pullout ability

Inactive Publication Date: 2018-11-23
智宏(大连)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of construction requirements in the construction industry, the butt joint of precast concrete components is an indispensable process. The traditional concrete pile butt joint method is welding of steel plates, and the steel parts are exposed, resulting in poor corrosion resistance. Solve the problem of sealing between pile heads
In recent years, mechanical connection joints have been gradually studied and used due to their rapid connection and corrosion resistance. However, when the existing mechanical joints receive pull-out force, the internal parts will deform under extrusion, resulting in the two piles being connected. Gaps between end faces reduce pull-out and shear performance
The circlips of the existing locking circlip mechanical joints are relatively thin, which cannot meet the pull-out requirements of precast concrete components. After the circlips are thickened, there is a problem that the circlips are not easy to rebound, resulting in failure of insertion

Method used

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  • Precast concrete mechanical joint and mixed connecting structure
  • Precast concrete mechanical joint and mixed connecting structure
  • Precast concrete mechanical joint and mixed connecting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1 to Figure 10 As shown, a prefabricated concrete mechanical joint includes a connector 3, a clip 5 and a retaining spring 4. The plug 3 includes a fixing seat 31 and a pin head 32 fixed on the fixing seat 31. The clip The inside of 5 is provided with the accommodation groove 51 that is used for accommodating jump ring 4, and described jump ring 4 can expand and contract in the accommodation groove, and the position corresponding to accommodation groove 51 on the side wall of described pin head 32 is provided with jump ring. 4, the matching slot 33, the pin head 32 can be inserted into the clip member 5 and pass through the clip spring 4, and cooperate with the clip slot 33 through the rebound of the clip spring 4, so that the pin head 32 is limited in the clip member 5. The clip spring 4 includes a clip spring main body 41 and a spring 42 threaded on the clip spring main body. One spring or multiple springs may be threaded on the clip spring 4 . The en...

Embodiment 2

[0049] Such as Figure 11 to Figure 15 As shown, a hybrid connection structure includes the prefabricated concrete mechanical joint described in Embodiment 1, and also includes an end plate I7 ​​and an end plate II. The end plate I7 ​​is provided with a fixing hole I71, and the corresponding end plate II8 The position is provided with a fixing hole II81, the positioning sleeve is fixed in the reinforcement sleeve I1, the accommodation groove 51 is arranged on the inner wall of the positioning sleeve, the fixing seat 31 is fixed in the reinforcement sleeve II2, and the reinforcement The bottoms of the sleeve I1 and the reinforcement sleeve II2 are provided with a limit end 11 capable of limiting the end of the steel bar inside, and the opening ends of the reinforcement sleeve I1 and the reinforcement sleeve II2 are provided with external threads and fixed respectively. On the threaded holes of the end plate I7 ​​and the end plate II8, the end plate I7 ​​and the end plate II8 ar...

Embodiment 3

[0051] Such as Figure 16 to Figure 22 As shown, a hybrid connection structure includes the prefabricated concrete mechanical joint described in Embodiment 1, and also includes end plates I7, end plates II8 and fixing sleeves 6, the accommodating groove 51 is arranged inside the fixing sleeves, and the end plates The plate I7 ​​is provided with a fixing hole I71, and the corresponding position of the end plate II8 is provided with a fixing hole II81. The fixing sleeve is a sleeve-shaped structure, and the opening end of the fixing sleeve is fixed at the fixing hole I71 and the fixing sleeve The open end of the opening faces the end plate II8, the fixing seat is fixed in the fixing hole II81, and the end plate I7 ​​and the end plate II8 are fixed to each other.

[0052] The fixed sleeve 6 is fixed with a cylindrical positioning sleeve, the receiving groove 51 is arranged on the inner wall of the positioning sleeve 6, the end plate I7 ​​is provided with a fixing hole I72 at the ...

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Abstract

The invention discloses a precast concrete mechanical joint. The precast concrete mechanical joint comprises a plug connector, a clamping part and a snap spring. The plug connector comprises a fixed seat and a pin head fixed to the fixed seat. An accommodating groove for accommodating the snap spring is formed in the clamping part. The snap spring can expand and shrink in the accommodating groove.A slot matched with the snap spring is formed in a position, corresponding to the accommodating groove, of the side wall of the pin head. The snap spring comprises a snap spring main body and a spring arranged on the snap spring main body in a penetrating manner. The invention also discloses a mixed connecting structure. The precast concrete mechanical joint and the mixed connecting structure areconnected and fixed by way of matching the snap spring and the slot, so that the anti-pull-out ability is high, and the connecting strength among concrete members is enhanced; by way of combining thesnap spring main body and the spring, the strength of the snap spring is enhanced, the anti-pull-out performance of the whole joint is improved, the stretching and rebounding flexibility of the snapspring are also kept, and the plugging success rate is improved.

Description

technical field [0001] The invention relates to a prefabricated concrete member connection structure, in particular to a prefabricated concrete mechanical joint and a hybrid connection structure. Background technique [0002] With the continuous improvement of construction requirements in the construction industry, the butt joint of precast concrete components is an indispensable process. The traditional concrete pile butt joint method is welding of steel plates, and the steel parts are exposed, resulting in poor corrosion resistance. Solve the problem of sealing between pile heads. In recent years, mechanical connection joints have been gradually studied and used due to their rapid connection and corrosion resistance. However, when the existing mechanical joints receive pull-out force, the internal parts will deform under extrusion, resulting in the two piles being connected. There is a gap between the end faces, which reduces the pull-out and shear performance. The circl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30E02D5/52
CPCE02D5/30E02D5/526
Inventor 郭宝利李荣芹
Owner 智宏(大连)科技有限公司