CN218622235U - Auxiliary tool for post-grouting of cast-in-place pile - Google Patents

Abstract

The utility model relates to an equipment field is pour to the bored concrete pile, especially relates to a bored concrete pile back slip casting appurtenance. Grouting appurtenance behind bored concrete pile, its characterized in that, including main mud jacking pipe, install the many joints of main mud jacking socle portion and connect the mud jacking pipe that leads to on the joint that leads to more, the vertical setting of main mud jacking pipe is in bored concrete pile, and the one end of propping up the mud jacking pipe is connected with the many structure of leading the mud jacking socle portion, and the other end of propping up the mud jacking pipe extends to bored concrete pile's lateral wall department, prop up and be provided with the check valve on the mud jacking pipe, prop up the mud jacking pipe and include a plurality ofly, a plurality of grout outlet sets up along bored concrete pile's lateral wall interval.

Description

Auxiliary tool for post-grouting of cast-in-place pile

Technical Field

The utility model relates to an equipment field is pour to the bored concrete pile, especially relates to a bored concrete pile back slip casting appurtenance.

Background

The post-grouting of the cast-in-place pile is a construction process for performing secondary grouting operation by utilizing a pipeline pre-buried in the cast-in-place pile after concrete pouring of the cast-in-place pile is finished. The soil around the bored concrete pile is compacted and reinforced by the grouting liquid in the post-grouting process, and the bearing capacity of the whole bored concrete pile can be greatly improved.

In general post-grouting construction of a cast-in-place pile, one or more vertical pipes are fixed on a reinforcement cage when the cast-in-place pile is not cast, after the cast-in-place pile is cast, pressure grouting is performed by using the vertical pipes, grout breaks through the outer wall of the cast-in-place pile and permeates into soil around the cast-in-place pile, and a pile body of the cast-in-place pile and the surrounding soil are tightly fixed.

However, the post-grouting method has the problems that the grouting amount on the pile side is insufficient, and the grouting in each direction on the pile side is not uniform. The scheme that the grouting in all directions is uneven is also solved by arranging the annular hose in the vertical pipe in the prior art, but the mode is easy to block or the secret prescription of a grout overflow hole is not tight and is blocked by concrete of a cast-in-place pile.

SUMMERY OF THE UTILITY MODEL

The utility model discloses slip casting appurtenance behind bored concrete pile.

The technical problem to be solved is that: the mud jacking pipe is easy to block during grouting operation after the pile is poured, and the grout of the mud jacking pipe can only flow out from one side, so that the secondary grouting is not uniform.

In order to solve the technical problem, the utility model discloses bored concrete pile back slip casting appurtenance adopts following scheme.

Grouting appurtenance behind bored concrete pile, including main mud jacking pipe, install and connect a mud jacking pipe on connecting that lead to more of main mud jacking socle portion, the vertical setting of main mud jacking pipe is in bored concrete pile, and outside the bored concrete pile was stretched out at main mud jacking pipe's top, the one end of a mud jacking pipe and the structure connection that leads to more of main mud jacking socle portion, the other end of a mud jacking pipe extends to bored concrete pile's lateral wall department, be provided with the check valve on the mud jacking pipe, prop up the mud jacking pipe and include a plurality ofly, a plurality of grout outlet sets up along bored concrete pile's lateral wall interval.

Preferably, the main grouting pipe and the branch grouting pipes are hard pipes.

Preferably, the branch grouting pipes are horizontally arranged and bound and fixed with a reinforcement cage of the cast-in-place pile.

Preferably, the check valve is positioned at a grout outlet of the branch grouting pipe far away from the multi-way connector, and the check valve can prevent external impurities from entering the branch grouting pipe through the check valve.

Preferably the outlet of the one-way valve extends to the outside of the bored pile cage.

Preferably, the multi-way joint is a tee joint, two branch grouting pipes are arranged below one main grouting pipe and are coaxially arranged, and the branch grouting pipes and the main grouting pipe are inverted T-shaped.

Preferably, the main grouting pipe is arranged on the inner side of a reinforcement cage of the cast-in-place pile, and the main grouting pipe is fixedly connected with the reinforcement cage.

Preferably, a plurality of main grouting pipes are pre-buried in the cast-in-place pile.

The utility model discloses slip casting appurtenance behind bored concrete pile compares with prior art, has following beneficial effect:

the utility model discloses in set up a mud jacking pipe through the bottom at main mud jacking pipe, the top of main mud jacking pipe stretches out outside the bored concrete pile from the top of bored concrete pile, then the slip casting liquid is in a plurality of mud jacking pipes of shunting through many logical joints from main mud jacking pipe, spout at the grout outlet from a mud jacking pipe, the grout outlet of a mud jacking pipe can set up the lateral wall position at the bored concrete pile on the one hand, avoid the concrete jam of bored concrete pile, on the other hand concrete and mud when avoiding the bored concrete pile to pour enter into a mud jacking pipe and lead to blockking up, set up the check valve on a mud jacking pipe, it can only follow a mud jacking pipe outside flow can not reverse inflow in a mud jacking pipe to guarantee the thick liquid. And prop the grout pipe and set up a plurality ofly, the grout outlet of a plurality of grout pipes just can set up along the lateral wall interval of bored concrete pile, carries out the secondary slip casting from a plurality of directions, guarantees that the pearl slip casting is even.

Drawings

Fig. 1 is a schematic structural view of the auxiliary tool for post-grouting of a cast-in-place pile of the present invention;

fig. 2 is a top view of fig. 1.

Description of the reference numerals: 1-main grouting pipe, 2-multi-way joint, 3-branch grouting pipe, 4-one-way valve and 5-reinforcement cage.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to fig. 1; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Grouting pipe blocks up easily when slip casting operation behind the bored concrete pile, and the thick liquid of grouting pipe can only follow one side and flow, leads to the inhomogeneous problem of secondary slip casting, the utility model provides a slip casting appurtenance behind the bored concrete pile, as shown in figure 1 and figure 2.

Grouting appurtenance behind bored concrete pile, including main mud jacking pipe 1, install and lead to joint 2 and the connection more than leading to joint 3 on 2 in main mud jacking pipe 1 bottom, main mud jacking pipe 1 is vertical to be set up in the bored concrete pile, outside the bored concrete pile was stretched out at main mud jacking pipe 1's top, the one end of propping up mud jacking pipe 3 and the structure connection that leads to of main mud jacking pipe 1 bottom, the other end of propping up mud jacking pipe 3 extends to the lateral wall department of bored concrete pile, be provided with check valve 4 on propping up mud jacking pipe 3, prop up mud jacking pipe 3 and include a plurality ofly, a plurality of grout outlet sets up along the lateral wall interval of bored concrete pile.

The main grouting pipe 1 is a hard pipeline which is parallel to the cast-in-place pile and is pre-embedded in the cast-in-place pile, the top of the main grouting pipe 1 extends out of the cast-in-place pile, the ground of the main grouting pipe 1 is located in the cast-in-place pile, branch grouting pipes 3 which extend to the side wall positions of the peripheral cast-in-place pile are arranged below the main grouting pipe 1, and then grouting liquid of secondary grouting is sprayed out through the branch grouting pipes 3 located at the side wall positions of the cast-in-place pile. The main grouting pipe 1 can be provided with a plurality of grouting pipes or one grouting pipe, and is determined according to the actual grouting amount of the secondary grouting of the cast-in-place pile and the soil environment.

Preferably, the main grouting pipe 1 and the branch grouting pipes 3 are hard pipes. Specifically, the main grouting pipe 1 and the branch grouting pipes 3 may be made of metal pipes or hard PVC pipes. But flexible tubing cannot be used.

As shown in fig. 1, the branch grouting pipe 3 is horizontally arranged, and the branch grouting pipe 3 is bound and fixed with a reinforcement cage 5 of the cast-in-place pile. In the same way, the main grouting pipe 1 is also fixedly connected with the reinforcement cage 5 through connecting pieces such as iron wires or buckles.

The check valve 4 is positioned at a grout outlet of the branch grouting pipe 3 far away from the multi-way connector 2, and the check valve 4 can prevent external impurities from entering the branch grouting pipe 3 through the check valve 4.

The outlet of the one-way valve 4 extends outside the bored pile cage 5. This allows the outlet of the non-return valve 4 to be as close as possible to the edge of the cast-in-place pile. The unset cast-in-place pile concrete is broken by pressure during secondary grouting conveniently.

The multi-way joint 2 is a tee joint, two branch grouting pipes 3 are arranged below one main grouting pipe 1, the two branch grouting pipes 3 are coaxially arranged, and the branch grouting pipes 3 and the main grouting pipe 1 are inverted T-shaped.

The main grouting pipe 1 is arranged on the inner side of a reinforcement cage 5 of the cast-in-place pile, and the main grouting pipe 1 is fixedly connected with the reinforcement cage 5.

As shown in fig. 2. A plurality of main grouting pipes 1 are pre-buried in the cast-in-place pile.

The above-mentioned embodiments are merely described for the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (8)

1. Grouting auxiliary tool behind bored concrete pile, its characterized in that, including main mud jacking pipe (1), install and lead to joint (2) and connect branch mud jacking pipe (3) on leading to joint (2) more of main mud jacking pipe (1) bottom, main mud jacking pipe (1) is vertical to be set up in bored concrete pile, outside the top of main mud jacking pipe (1) stretches out bored concrete pile, the one end of branch mud jacking pipe (3) and the structure connection that leads to more of main mud jacking pipe (1) bottom, the other end of branch mud jacking pipe (3) extends to the lateral wall department of bored concrete pile, be provided with check valve (4) on branch mud jacking pipe (3), branch mud jacking pipe (3) include a plurality ofly, and a plurality of grout outlet sets up along the lateral wall interval of bored concrete pile.

2. The post-cast-in-place pile grouting auxiliary tool according to claim 1, characterized in that the main grouting pipe (1) and the branch grouting pipes (3) are hard pipes.

3. The auxiliary tool for post-grouting of the cast-in-place pile according to claim 1, wherein the branch grouting pipe (3) is horizontally arranged, and the branch grouting pipe (3) is bound and fixed with a reinforcement cage (5) of the cast-in-place pile.

4. The auxiliary tool for post-grouting of the cast-in-place pile according to claim 1, characterized in that the check valve (4) is located at a grout outlet of the branch grouting pipe (3) far away from the multi-way joint (2), and the check valve (4) can prevent external impurities from entering the branch grouting pipe (3) through the check valve (4).

5. A post-cast-in-place pile grouting aid according to claim 4, characterized in that the outlet of the non-return valve (4) extends outside the cast-in-place pile cage (5).

6. The auxiliary tool for post-grouting of a cast-in-place pile according to claim 1, wherein the multi-way joint (2) is a tee joint, two branch grouting pipes (3) are arranged below one main grouting pipe (1), the two branch grouting pipes (3) are coaxially arranged, and the branch grouting pipes (3) and the main grouting pipe (1) are in an inverted T shape.

7. The post-grouting auxiliary tool for the cast-in-place pile according to claim 1, characterized in that the main grouting pipe (1) is arranged inside a reinforcement cage (5) of the cast-in-place pile, and the main grouting pipe (1) is fixedly connected with the reinforcement cage (5).

8. The auxiliary tool for post-grouting of a bored concrete pile according to claim 1, wherein a plurality of main grouting pipes (1) are pre-buried in the bored concrete pile.

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