CN215669484U

CN215669484U - Pressure type anchor rod

Info

Publication number: CN215669484U
Application number: CN202121911023.XU
Authority: CN
Inventors: 曹辉; 杨昌亚; 郑凯; 黄婷
Original assignee: Shenzhen Baiqin Construction Engineering Co ltd
Current assignee: Shenzhen Baiqin Construction Engineering Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-01-28
Anticipated expiration: 2031-08-13

Abstract

The application relates to a pressure type stock relates to the technical field of anti-floating anchor construction, including the body of rod, the outside of the body of rod is provided with the pile body, be equipped with the slip casting body between the body of rod and the pile body, be equipped with the anticorrosive coating between slip casting body and the body of rod. The method has the effect of overcoming the technical problem that the conventional pore-forming method cannot form pores or cannot anchor in complex stratum.

Description

Pressure type anchor rod

Technical Field

The application relates to the technical field of anti-floating anchor rod construction, in particular to a pressure type anchor rod.

Background

In recent years, with the increasing population of cities and the increasing number of high-rise buildings, the building space is more and more limited, and the buildings must be developed into underground buildings. In order to fully utilize the underground space, when the foundation bottom plate is buried deeply, the basement bottom plate with higher underground water level bears larger buoyancy. When the weight of the structure and the upper load are not enough to resist the buoyancy of underground water, the bottom plate arch of the underground chamber is easy to occur, so that the building is damaged, and a vertical anti-floating measure needs to be taken.

The anti-floating anchor rod is a common equal-diameter tension type soil anchor rod, later improvement is performed for improving the anti-pulling force, the high-pressure injection enlarged head anti-pulling anchor rod and the mechanical reaming rock stratum anti-pulling anchor rod are produced, and the anti-pulling force of the anchor rod is obviously improved.

However, no matter the ordinary anchor rod or the enlarged head anchor rod, when meeting complicated stratum conditions, such as the soil layers of alluvial mud soil, silt, fine sand, coarse gravel sand and the like, the problems of difficult pore-forming, hole collapse, necking down and even impossible pore-forming can be caused, the pipe locking can be realized by adopting the sleeve pipe for pore-forming in serious conditions, and when the enlarged head anchor rod is adopted, the expanded head rod body cannot be placed because of the too compact sand layer grouting mixture after hole expansion.

Disclosure of Invention

In order to overcome the technical problem that the conventional hole forming is frequently carried out in a complex stratum, the hole forming cannot be carried out or the anchor cannot be put down, the pressure type anchor rod is provided.

The application provides a pressure type stock adopts following technical scheme:

the pressure type anchor rod comprises a rod body, wherein a pile body is arranged outside the rod body, grouting bodies are arranged between the rod body and the pile body, and an anti-corrosion layer is arranged between the grouting bodies and the rod body.

By adopting the technical scheme, the anchor rod body is implanted into the pile body through the hole again and grouting is carried out, so that the rod body transmits force to the grouting body with the hole, the grouting body is transmitted to the pile body, and the side friction resistance of the pile body is the anti-pulling force of the anchor rod; meanwhile, the technology of arranging the pile body is not only suitable for common stratum, but also suitable for construction of the anchor rod in stratum with various complex stratum conditions such as washing laminated mucky soil, mucky silt, fine sand and coarse gravel, thereby not only overcoming the problems of difficult hole forming and difficult anchoring in the complex stratum, but also leading the anchor rod to have the anti-pulling effect equivalent to full-section hole expansion.

Optionally, the bottom end of the rod body is provided with a bearing plate.

Through adopting above-mentioned technical scheme, body of rod bottom end installation bearing plate, bearing plate are as withdrawal resistance pressure-bearing core component, can form the interaction force with the slip casting body, promote the withdrawal resistance of the body of rod.

Optionally, a supporting body is mounted at the lower end of the rod body.

Through adopting above-mentioned technical scheme, at the lower tip installation supporting body of the body of rod to the mutual acting force of dispersion body of rod and slip casting body, thereby further improve the withdrawal resistance of the body of rod.

Optionally, the pile body is a mixing pile.

Optionally, the pile body is a jet grouting pile.

Optionally, the corrosion protection layer is filled with asphalt.

Optionally, the corrosion-resistant layer is sleeved with an isolation pipe.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of a rock bolt in embodiment 1 of the application.

Fig. 2 is a cross-sectional view of the overall structure of the anchor rod of the embodiment 2 of the application.

Fig. 3 is a cross-sectional view of the overall structure of the anchor rod of the embodiment 3 of the application.

Fig. 4 is a cross-sectional view of the overall structure of the anchor rod of the embodiment 4 of the application.

Description of reference numerals:

100. stirring the piles; 200. carrying out jet grouting pile; 2. grouting; 3. a rod body; 31. an anticorrosive layer; 33. a pressure bearing plate; 34. a spiral rib; 35. a water stop ring; 36. a steel backing plate; 37. finish rolling the nut; 38. positioning a nut; 39. a carrier; 4. a base plate; 41. and (5) cushion coating.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Example 1:

the embodiment of the application discloses pressure type stock. Referring to fig. 1, the pressure type anchor rod includes a mixing pile 100, the mixing pile 100 is vertically disposed, and the mixing pile 100 is disposed at a designed hole site of the anchor rod in a collapse-prone hole and a necking stratum and is generated by using construction cement soil.

The trompil has been seted up in the center department of stirring stake 100, and the trompil mode can adopt geological drilling rig, roofbolter or luoyang shovel pore-forming, and the vertical extension setting of trompil, trompil and stirring stake 100 are with high.

Be provided with the body of rod 3 in the trompil, the body of rod 3 adopts the finish rolling reinforcing bar material, 3 vertical settings in the trompil of the body of rod are in, the bottom of the body of rod 3 extends to the bottom of stirring stake 100, bearing plate 33 is installed to the bottom end of the body of rod 3, bearing plate 33 is the platelike of level setting, bearing plate 33 cover is located on the body of rod 3, bearing plate 33 bottom surface is equipped with the pressure-bearing lantern ring that the body of rod 3 was located to the cover, the external diameter of the pressure-bearing lantern ring diminishes gradually from top to bottom, the external diameter of bearing plate 33 is greater than the external diameter of the body of rod 3 and is less than the internal diameter of stirring stake 100.

The top of the body of rod 3 extends to the top of stirring stake 100, and the part outside that the body of rod 3 extends stirring stake 100 top is provided with spiral muscle 34, and spiral muscle 34 middle part is provided with the seal ring 35 of being connected with the body of rod 3, and spiral muscle 34 top is equipped with the steel tie plate 36 of being connected with the body of

rod

3, and 36 bottom surfaces of steel tie plate butt joint have with the body of rod 3 threaded connection's set

nut

38, and 36 top surfaces of steel tie plate butt joint have with the body of rod 3 threaded connection's finish rolling nut 37. A bottom plate 4 is arranged outside the part of the rod body 3 extending out of the upper part of the mixing pile 100, a cushion layer 41 is arranged on the bottom surface of the bottom plate 4, and the cushion layer 41 is abutted against the top surface of the mixing pile 100.

The outer wall of the rod body 3 is coated with an anticorrosive coating 31, the anticorrosive coating 31 is filled with asphalt or anticorrosive lubricating grease, an isolating pipe is sleeved outside the anticorrosive coating 31, and the isolating pipe is an isolating PVC sleeve. According to the requirement of the anticorrosion grade, the whole process is coated with filled asphalt or anticorrosion lubricating grease, the protective rod body 3 is fully covered, and the whole process of filling asphalt or anticorrosion lubricating grease is hermetically surrounded by an isolation PVC sleeve, so that the rod body 3 is completely isolated from underground water and soil media.

Pouring has slip casting body 2 in the trompil, and slip casting body 2 is located between isolation pipe outer wall and the 100 inner walls of mixing pile, and the bearing plate is connected with slip casting body 2, and bearing plate 33 is as anti-pulling force pressure-bearing core component, can form the interact power with slip casting body 2, promotes the anti-pulling force of the body of rod 3.

The implementation principle of the embodiment 1 of the application is as follows: and (3) re-drilling holes in the cement-soil mixing pile 100, implanting an anchor rod body 3 and grouting, so that the rod body 3 transmits force to the grouting body 2 with the holes, the grouting body 2 is transmitted to the cement-soil mixing pile 100, and the side friction resistance of the cement-soil mixing pile 100 is the uplift resistance of the anchor rod.

Meanwhile, the technology of setting the cement soil mixing pile 100 is not only suitable for common strata, but also suitable for construction of anchor rods in strata of mucky soil, mucky silt, fine sand and coarse gravel sand under various complex stratum conditions, thereby not only overcoming the problems of difficult hole forming and difficult anchoring in complex strata, but also enabling the anchor rods to have the anti-pulling force effect equivalent to full-section hole expansion.

Example 2:

referring to fig. 2, embodiment 2 is different from embodiment 1 in the type of the anchor rod, and embodiment 2 is a tension-compression combined type anchor rod, including: 2/3 section under the body of rod 3, a supporting body 39 is installed at every interval 1.5m, supporting body 39 is the platelike of horizontal arrangement, the body of rod 3 is located to the supporting body 39 cover, the supporting body 39 bottom surface is equipped with the cover and locates the lantern ring that bears of the body of rod 3, the external diameter that bears the lantern ring diminishes from top to bottom gradually, the external diameter of supporting body 39 is greater than the external diameter of the body of rod 3 and is less than the external diameter of bearing plate 33, utilize bearing plate 33 and a plurality of supporting body 39, make the body of rod 3 form a pressure dispersion type stock, with the interact power of dispersion body of rod 3 and slip casting 2, thereby further improve the withdrawal resistance of the body of rod 3.

Example 3:

referring to fig. 3, embodiment 3 is different from embodiment 1 in the type of the pile body arrangement, and embodiment 3 is a jet grouting pile 200.

Example 4:

referring to fig. 4, embodiment 4 is different from embodiment 3 in the type of the anchor rod, and embodiment 4 is a tension-compression combination type anchor rod, including: 2/3 sections under the body of rod 3, every interval 1.5m installs a supporting body 39, and supporting body 39 horizontal setting, the external diameter of supporting body 39 are greater than the external diameter of the body of rod 3 and are less than the external diameter of bearing plate 33, utilize bearing plate 33 and a plurality of supporting body 39, make the body of rod 3 form a pressure dispersion type stock to the interact's of dispersion body of rod 3 and slip casting 2 to the withdrawal resistance of further improvement body of rod 3.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A pressure type stock which characterized in that: including the body of rod (3), the outside of the body of rod (3) is provided with the pile body, be equipped with grout body (2) between the body of rod (3) and the pile body, be equipped with anticorrosive coating (31) between grout body (2) and the body of rod (3).

2. A pressure rock bolt according to claim 1, wherein: and a bearing plate (33) is arranged at the bottom end of the rod body (3).

3. A pressure rock bolt according to claim 2, wherein: the lower end part of the rod body (3) is provided with a bearing body (39).

4. A pressure rock bolt according to claim 1, wherein: the pile body is a stirring pile (100).

5. A pressure rock bolt according to claim 1, wherein: the pile body is a jet grouting pile (200).

6. A pressure rock bolt according to claim 1, wherein: the anti-corrosion layer (31) is filled with asphalt.

7. A pressure rock bolt according to claim 1, wherein: an isolation pipe is sleeved outside the anticorrosive layer (31).