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Universal centering bracket and anchor rod adopting same

A technology for centering brackets and anchor rods, which is applied in construction, sheet pile walls, foundation structure engineering, etc., can solve problems such as endangering engineering safety, weakening of contact neps, and lying on the hole wall, etc., to achieve rapid installation and fixing, The effect of small contact pressure and large contact area

Pending Publication Date: 2019-06-07
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole process not only produces cumbersome construction procedures, requires a lot of manpower, but also consumes a lot of non-renewable steel
In addition, because the welded steel support slides on the hole wall when the anchor rod is put into the hole, it is very easy to cut the hole wall soil again and sink into the soil, and then it is difficult to ensure the centering of the anchor rod body
The plastic clasp method can better isolate multiple anchor rods, but because the clasp is soft and the anchor rods are distributed on the periphery of the clasp, it is easy to cause the anchor rods to lie on the hole wall as a whole, which cannot guarantee the safety of the anchor rods. The centering of the rod body greatly weakens the contact neps between the anchor rod body and the grouting body, resulting in a greatly reduced bonding force between the anchor rod body and the grouting body, endangering the safety of the project

Method used

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  • Universal centering bracket and anchor rod adopting same
  • Universal centering bracket and anchor rod adopting same
  • Universal centering bracket and anchor rod adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] refer to Figure 1 to Figure 12, the present invention proposes a universal centering bracket, including a boat-shaped bracket, a first universal plug 24, a second universal plug 25, a first locking ring 26 and a second locking ring 27. The boat-shaped bracket includes an outer cylinder 21, an inner cylinder 22 coaxially arranged at both ends of the outer cylinder 21, and a rib 23 connected between the outer cylinder 21 and the inner cylinder 22. The inner cylinder 22 is provided with a first deadbolt cone at both ends along the axial direction. The cylindrical portion 211 and the second locking bolt cone portion 212, from the free end to the center direction of the inner cylinder 22, the outer diameter of the first locking bolt cone portion 211 and the outer diameter of the second locking bolt cone portion 212 gradually increase. Large, the first universal plug 24 is embedded in the first lock bolt cone portion 211, the second universal plug 25 is embedded in the secon...

Embodiment 2

[0023] refer to Figure 13 to Figure 23 , an assembled centering bracket, including a boat-shaped bracket and an assembly plug 40. The boat-shaped bracket includes an outer cylinder 21, an inner cylinder 22 coaxially arranged in the outer cylinder 21, and a rib 23 connected between the outer cylinder 21 and the inner cylinder 22. The inner wall of the cylinder 22 is provided with an inner thread portion 225, the outer wall of the assembly plug 40 is provided with an outer thread portion 43 that cooperates with the inner thread portion 225, the assembly plug 40 is screwed into the inner cylinder 22, and the assembly plug 40 is provided with The rib hole 41 for the bolt body 10 to pass through and the grouting pipe through hole 42 for grouting are respectively provided at both ends of the assembly plug 40 in the axial direction for restricting the movement of the assembly plug 40 on the bolt body 10 the first limiting member 51 and the second limiting member 52. As a preferred ...

Embodiment 3

[0030] refer to Figures 24 to 27 , the present invention also proposes an expansion shell bearing plate, including a conical bearing plate, the center of the conical bearing plate is axially provided with a through hole 611 for the anchor rod body 10 to pass through, the conical bearing plate The plate has a flat plate portion 61 and a tapered portion 62 formed on the flat plate portion 61. The flat plate portion 61 and the tapered portion 62 are integrally formed. The diameter is larger than the outer diameter of the free end, and an annular pressing table 63 is formed at the connection between the connecting end and the flat plate portion 61 , and the annular pressing table 63 is provided with a first annular pressure pad 64 . As a preferred mode of the present invention, a second annular pressure pad 65 is fixed on the end surface of the free end.

[0031] As a preferred embodiment of the present invention, the length of the tapered portion 62 in the axial direction is 0....

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Abstract

The invention relates to a universal centering bracket, which comprises a ship-shaped bracket, a first universal plug, a second universal plug, a first locking ring and a second locking ring; the ship-shaped bracket comprises an outer barrel, an inner barrel and a rib plate connected between the outer barrel and the inner barrel; the two ends in the axial direction of the inner barrel are providedwith a first lock tongue cone barrel part and a second lock tongue cone barrel part; the first universal plug is provided with a first bar penetrating hole allowing an anchor rod body to penetrate, and a first grouting pipe penetrating hole for grouting; and the second universal plug is provided with a second bar penetrating hole allowing the anchor rod body to penetrate, and a second grouting pipe penetrating hole for grouting. The universal centering bracket has the advantages that universality is good, centering of the anchor rod body can be effectively guaranteed, and construction is convenient.

Description

technical field [0001] The invention relates to a universal centering support and an anchor rod using the centering support, and belongs to the technical field of foundation engineering. Background technique [0002] With the development of national infrastructure, engineering construction and underground space, bolt support technology, as an efficient and economical support technology, has been widely used in engineering. In the process of bolt design and construction, the bolt body is required to be in the center position in the borehole. On the one hand, it can ensure the bonding force between the bolt body and the grouting body, and on the other hand, it can ensure that the bolt body has sufficient protective layer thickness. . Therefore, the centering of the bolt body directly affects the pullout bearing capacity and durability of the bolt. However, the tension anchoring section of the tension-compression composite anchor directly affects the pullout bearing capacity ...

Claims

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Application Information

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IPC IPC(8): E02D5/74
Inventor 涂兵雄董帆王海涛贾金青张丽华许国平
Owner HUAQIAO UNIVERSITY