CN211621595U

CN211621595U - Quick grouting connecting device

Info

Publication number: CN211621595U
Application number: CN201922326445.XU
Authority: CN
Inventors: 黄汉成; 李连森; 牟兰超; 魏宏源
Original assignee: Yishan Beijing Geotechnical Engineering Co ltd
Current assignee: Yishan Beijing Geotechnical Engineering Co ltd
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2020-10-02
Anticipated expiration: 2029-12-21

Abstract

The utility model relates to a quick grouting connecting device, which relates to the technical field of post grouting process construction equipment and comprises a main grouting pipe, a first grouting branch pipe and a second grouting branch pipe which are connected through a first tee joint; a first grouting valve is arranged on the first grouting branch pipe, one end, far away from the first tee joint, of the first grouting branch pipe is connected with a first grout outlet pipe and a first water drain pipe through a second tee joint, and a first water drain valve is arranged on the first water drain pipe; and a second grouting valve is arranged on the second grouting branch pipe, one end of the second grouting branch pipe, which is far away from the first tee joint, is connected with a second grout outlet pipe and a second water drain pipe through a third tee joint, and a second water drain valve is arranged on the second water drain pipe. The utility model discloses can improve the efficiency of construction.

Description

Quick grouting connecting device

Technical Field

The utility model belongs to the technical field of the technique construction equipment of back mud jacking technology and specifically relates to a quick slip casting connecting device is related to.

Background

As a special deep foundation, the pile foundation has the advantages of high bearing capacity, small settlement, convenience in manufacturing, flexibility in arrangement, wide applicable conditions and the like, plays an increasingly important role in the field of civil engineering, but in actual engineering, due to the fact that sediment and soil at the bottom of a pile are not cleaned completely or a layer of mud skin is generated around the pile by adopting a mud retaining wall, the side friction resistance between the pile and a soil body is reduced, the bearing capacity of the pile foundation is insufficient, and adverse effects are generated on engineering quality and safety. The pile foundation post-grouting technology well makes up the defect, the post-grouting is a process in pile foundation construction, a post-grouting pipe pre-embedded in a pile foundation is plugged, cement paste with certain pressure is pressed into a pile end soil layer and a pile side soil layer by a grouting pump, the strength and the rigidity of the pile end soil layer and the pile side soil layer are enhanced by the functions of penetration, filling, compaction, splitting, consolidation and the like of the grout on the pile side soil body, the resistance and the roughness of a pile side shear section are increased, and therefore the effects of improving the bearing capacity of the pile end, the friction resistance of the pile side and reducing settlement are achieved.

In order to prevent the situation that the pre-buried back grouting pipes are difficult to open due to blockage, two back grouting pipes are pre-buried in a pile foundation generally, and cement slurry is injected into the two back grouting pipes respectively, so that the effective implementation of a back grouting process is guaranteed. In the existing construction mode, grouting operation is carried out on a grouting pipe and one of the rear grouting pipes through a joint, then the joint is disassembled, and grouting operation is carried out on the grouting pipe and the other rear grouting pipe through the joint.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a quick slip casting connecting device can improve the efficiency of construction.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a quick grouting connecting device comprises a main grouting pipe, a first grouting branch pipe and a second grouting branch pipe which are connected through a first tee joint; a first grouting valve is arranged on the first grouting branch pipe, one end, far away from the first tee joint, of the first grouting branch pipe is connected with a first grout outlet pipe and a first water drain pipe through a second tee joint, and a first water drain valve is arranged on the first water drain pipe; and a second grouting valve is arranged on the second grouting branch pipe, one end of the second grouting branch pipe, which is far away from the first tee joint, is connected with a second grout outlet pipe and a second water drain pipe through a third tee joint, and a second water drain valve is arranged on the second water drain pipe.

By adopting the technical scheme, the grouting main pipe is simultaneously connected with the first grout outlet pipe and the second grout outlet pipe through the first grouting branch pipe and the second grouting branch pipe, the first grout outlet pipe and the second grout outlet pipe are respectively connected with the first back grouting pipe and the second back grouting pipe which are preset in the foundation pile, and grouting can be respectively performed on the first back grouting pipe and the second back grouting pipe by controlling the opening and closing of the valve and grouting the grouting main pipe, so that the construction efficiency is improved; the grouting operation comprises the following processes: connecting a first grout outlet pipe and a second grout outlet pipe to a first rear grouting pipe and a second rear grouting pipe respectively, opening a first grouting valve, closing a first water escape valve and a second grouting valve, injecting water into a main grouting pipe to dredge the first rear grouting pipe, closing the first grouting valve to stop water injection, opening a first water escape valve to release water pressure, opening the first grouting valve to close the first water escape valve, injecting cement into the main grouting pipe, injecting the cement into the first rear grouting pipe through a first grouting branch pipe and a first grout outlet pipe, stopping grouting when the grouting amount reaches the standard or the grouting pressure meets the requirement, closing the first grouting valve, opening a second grouting valve, closing the second water escape valve, injecting water into the main grouting pipe to dredge the second rear grouting pipe, closing the second grouting valve to stop water injection, opening a second water escape valve to release water pressure, and opening a fifth water escape valve to release water pressure, And opening a second grouting valve, closing the second water escape valve, injecting cement paste into the grouting main pipe, injecting the cement paste into a second rear grouting pipe through a second grouting branch pipe and a second grout outlet pipe, stopping grouting when the grouting amount reaches the standard or the grouting pressure meets the requirement, and closing the second grouting valve.

The utility model discloses further set up to: the bottom end of the first slurry outlet pipe is provided with a first joint.

The utility model discloses further set up to: the first joint is connectable with a first post-grouting pipe.

The utility model discloses further set up to: and a second joint is arranged at the bottom end of the second slurry outlet pipe.

The utility model discloses further set up to: the second joint is connectable with a second post-grouting pipe.

The utility model discloses further set up to: and the grouting main pipe is provided with a backflow prevention pressure valve.

Through adopting above-mentioned technical scheme, prevent flowing backward the pressure valve and can prevent to pour into the water or the grout of the mud jacking pipe behind first back mud jacking pipe and the second and flow backward from the slip casting person in charge.

The utility model discloses further set up to: still include the recovery pond, first wash-out pipe and second wash-out pipe are connected to the recovery pond through the recovery tube respectively.

Through adopting above-mentioned technical scheme, the water of letting out in first wash-out pipe and the second wash-out pipe can carry out recycle in following recovery pipe flow to recovery water pond, has practiced thrift the water resource, accords with green development theory.

To sum up, the utility model discloses a beneficial technological effect does:

1. the grouting main pipe is provided with a first rear grouting pipe and a second rear grouting pipe which are connected with each other through a first rear grouting pipe and a second rear grouting pipe;

2. the backflow prevention pressure valve can prevent water or cement slurry injected into the first rear grouting pipe and the second rear grouting pipe from flowing backwards from the grouting main pipe;

3. the water of letting out in first outlet pipe and the second outlet pipe can carry out recycle in following recovery pipe flow to recovery water pond, has practiced thrift the water resource, accords with green development theory.

Drawings

Fig. 1 is a schematic view of the overall structure of the quick grouting connecting device.

Reference numerals: 1. grouting a main pipe; 2. first grouting branch pipe; 3. second grouting and pipe dividing; 4. a first tee joint; 5. a backflow prevention pressure valve; 6. a second tee joint; 7. a first slurry outlet pipe; 8. a first drain pipe; 9. a first grouting valve; 10. a first water drain valve; 11. a first joint; 12. a third tee joint; 13. a second slurry outlet pipe; 14. a second drain pipe; 15. a second grouting valve; 16. a second drain valve; 17. a second joint; 18. a pile foundation; 19. a first post-grouting pipe; 20. a second post-grouting pipe; 21. a recovery pipe; 22. a recovery water tank; 23. a water pipe joint.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a quick slip casting connecting device, include that the slip casting that connects through first tee bend 4 is responsible for 1, first slip casting and is in charge of 2 and second slip casting and is in charge of 3. The grouting main pipe 1 is provided with an anti-backflow pressure valve 5. The second tee joint 6 is installed to 4 one ends of keeping away from first tee joint of first slip casting branch pipe 2, two other interfaces of second tee joint 6 are connected with first grout outlet pipe 7 and first water-drain mast 8 respectively, first slip casting pipe installs first slip casting valve 9 between first tee joint 4 and second tee joint 6, install first water-drain mast 10 on the first water-drain mast 8, first 6 one ends of keeping away from second tee joint of first grout outlet pipe 7 are installed first joint 11, first grout outlet pipe 7 can be connected with the first back grout pipe 19 in the pile foundation 18 through first joint 11 with predetermineeing. The third tee joint 12 is installed to the one end of the second slip casting branch pipe 3 far away from the first tee joint 4, the other two interfaces of the third tee joint 12 are connected with a second grout outlet pipe 13 and a second water drain pipe 14 respectively, a second slip casting valve 15 is installed between the first tee joint 4 and the third tee joint 12 in the second slip casting branch pipe 3, a second water drain valve 16 is installed on the second water drain pipe 14, a second joint 17 is installed at one end, far away from the third tee joint 12, of the second grout outlet pipe 13, and the second grout outlet pipe 13 can be connected with a second rear grout pressing pipe 20 in a pile foundation 18 through the second joint 17.

The grouting operation comprises the following processes:

firstly, connecting a first slurry outlet pipe 7 to a first rear grouting pipe 19 through a first joint 11, and connecting a second slurry outlet pipe 13 to a second rear grouting pipe 20 through a second joint 17;

opening the first grouting valve 9, closing the first water escape valve 10 and the second grouting valve 15, injecting water into the grouting main pipe 1 to dredge the first back grouting pipe 19, then closing the first grouting valve 9 to stop water injection, and opening the first water escape valve 10 to release water pressure;

thirdly, opening a first grouting valve 9, closing a first water drain valve 10, injecting cement slurry into the grouting main pipe 1, injecting the cement slurry into a first rear grouting pipe 19 through a first grouting branch pipe 2 and a first slurry outlet pipe 7, stopping grouting when the grouting amount reaches the standard or the grouting pressure meets the requirement, and closing the first grouting valve 9;

fourthly, opening the second grouting valve 15, closing the second drain valve 16, injecting water into the grouting main pipe 1 to dredge the second rear grouting pipe 20, then closing the second grouting valve 15 to stop injecting water, and opening the drain pressure of the second drain valve 16;

and fifthly, opening the second grouting valve 15, closing the second drain valve 16, injecting cement slurry into the grouting main pipe 1, injecting the cement slurry into the second rear grouting pipe 20 through the second grouting branch pipe 3 and the second grout outlet pipe 13, stopping grouting when the grouting amount reaches the standard or the grouting pressure meets the requirement, and closing the second grouting valve 15.

Through controlling the opening and closing of the first grouting valve 9, the first water drain valve 10, the second grouting valve 15 and the second water drain valve 16, water injection and grouting can be successively performed on the first rear grouting pipe 19 and the second rear grouting pipe 20 through one-time installation, and compared with the existing construction mode, the installation frequency is reduced, so that the construction efficiency is improved.

Further, in order to reduce the waste of water resources, a recovery water tank 22 is additionally provided, the water outlet ends of the first water drain pipe 8 and the second water drain pipe 14 are respectively connected with a recovery pipe 21, and the two recovery pipes 21 are connected to the recovery water tank 22 through a water pipe joint 23. When the water pressure is released, the water released from the first water release pipe 8 and the second water release pipe 14 can flow to the recovery water tank 22 along the recovery pipe 21 for recovery and utilization, so that the water resource is saved, and the green development concept is met.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a quick slip casting connecting device which characterized in that: comprises a main grouting pipe (1), a first grouting branch pipe (2) and a second grouting branch pipe (3) which are connected through a first tee joint (4); a first grouting valve (9) is arranged on the first grouting branch pipe (2), one end, far away from the first tee joint (4), of the first grouting branch pipe is connected with a first grout outlet pipe (7) and a first water drain pipe (8) through a second tee joint (6), and a first water drain valve (10) is arranged on the first water drain pipe (8); and a second grouting valve (15) is arranged on the second grouting branch pipe (3), one end, far away from the first tee joint (4), of the second grouting branch pipe is connected with a second grout outlet pipe (13) and a second water drain pipe (14) through a third tee joint (12), and a second water drain valve (16) is arranged on the second water drain pipe (14).

2. The quick slip casting connection apparatus of claim 1, wherein: the bottom end of the first slurry outlet pipe (7) is provided with a first joint (11).

3. The quick slip casting connection apparatus of claim 2, wherein: the first joint (11) can be connected to a first post-grouting pipe (19).

4. The quick slip casting connection apparatus of claim 1, wherein: and a second joint (17) is arranged at the bottom end of the second slurry outlet pipe (13).

5. The quick slip casting connection apparatus of claim 4, wherein: the second joint (17) can be connected with a second post-grouting pipe (20).

6. The quick grouting connection as claimed in any one of claims 1 to 5, wherein: and the grouting main pipe (1) is provided with a backflow prevention pressure valve (5).

7. The quick grouting connection as claimed in any one of claims 1 to 5, wherein: the water recycling device further comprises a water recycling pool (22), and the first drain pipe (8) and the second drain pipe (14) are connected to the water recycling pool (22) through the water recycling pipes (21) respectively.