CN213952205U

CN213952205U - CFG pile composite foundation construction device

Info

Publication number: CN213952205U
Application number: CN202022463524.8U
Authority: CN
Inventors: 刘壮; 吴家欢; 胡鹏; 张龙; 王锦前
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-08-13
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a CFG stake composite foundation construction equipment, among the device: finding a pile point on a foundation soil layer at the bottom of a foundation pit, splicing the sizing pipe and the base together, and enabling the sizing pipe to form a cylinder and align the pile point; rivets are arranged on the base, and the rivets penetrate through the base and are inserted into the base soil layer to fix the base; the bottom of the spiral drill rod extends into the shaping pipe, a drill hole is formed by driving the spiral drill rod to rotate downwards, the mixture is fed into the drill hole, and the spiral drill rod is drawn out; drilling a hole and solidifying a mixed material in the sizing pipe to form a pile body, removing the rivet, and separating the sizing pipe from the base; and backfilling a first layer of sealing soil above the foundation soil layer, arranging a pile cap at the top of the pile body, backfilling a second layer of sealing soil above the pile cap, paving a mattress layer above the second layer of sealing soil, and paving a filler above the mattress layer. The utility model discloses need not to clear up soil between the stake again, need not to cut the operation, improved security and efficiency of construction, the setting installation with dismantle more convenient and safety.

Description

CFG pile composite foundation construction device

Technical Field

The utility model relates to a CFG stake construction technical field especially relates to a CFG stake composite foundation construction equipment.

Background

The CFG pile is a cement fly ash gravel pile, which is a variable-strength pile with certain strength and is prepared by mixing gravel, stone chips, sand and fly ash with cement and adding water and mixing the mixture by various pile forming machines. The CFG pile is a low-strength concrete pile, can fully utilize the combined action of bearing capacity of soil among the piles, can transmit load to a deep foundation and has better technical performance and economic effect.

The main construction sequence of the existing CFG pile composite foundation is as follows: measuring and lofting, positioning a drilling machine, drilling and forming holes, pouring and pulling a mixture, cleaning soil among piles, building a pile cap, backfilling the soil among the piles, and paving a filler.

According to the construction method, the initial building height of the pile body exceeds the preset height of the pile top, so that soil between piles needs to be cleaned, the top of each pile body is exposed to the required height, and then a cutter is manually used for cutting off the excessive part of the pile body; in the whole process of cleaning the soil between the piles, the digging depth is not easy to be controlled, the operation space between the piles is limited, and the cleaning construction is time-consuming and labor-consuming; during subsequent cutting operation, the situation that people are injured by cutting equipment often occurs due to severe collision between the cutting machine and the pile body, and the cut cement column needs to be transferred out of a construction site.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a CFG stake composite foundation construction equipment to the defect among the prior art.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a CFG stake composite foundation construction equipment, the device includes: the device comprises a shaping pipe, a base, a spiral drill rod, rivets, a foundation soil layer, a first layer of sealing soil, a second layer of sealing soil, a mattress layer, a filler, a pile body and a pile cap; wherein:

pile points are arranged on a foundation soil layer at the bottom of a foundation pit, and the sizing pipes and the base are spliced together to form a cylinder and align the pile points; rivets are arranged on the base, and the rivets penetrate through the base and are inserted into the base soil layer to fix the base; the bottom of the spiral drill rod extends into the shaping pipe, a drill hole is formed by driving the spiral drill rod to rotate downwards, the mixture is fed into the drill hole, and the spiral drill rod is drawn out;

drilling a hole and solidifying a mixed material in the sizing pipe to form a pile body, removing the rivet, and separating the sizing pipe from the base; and backfilling a first layer of sealing soil above the foundation soil layer, arranging a pile cap at the top of the pile body, backfilling a second layer of sealing soil above the pile cap, paving a mattress layer above the second layer of sealing soil, and paving a filler above the mattress layer to form the CFG pile composite foundation construction device.

Further, the utility model discloses a structure of sizing pipe is: the device consists of two semicylinders, and the two semicylinders are spliced together to form a complete cylinder.

Further, the utility model discloses a structure of base is: constitute by two cuboids, all seted up a semicircle through-hole on every cuboid, two semicylinders of calibrator pipe are fixed respectively in the semicircle through-hole top on two cuboids.

Further, the rivet is provided with a plurality of, and the symmetry sets up respectively on the both sides of base.

Further, auger stem is hollow structure, and the top is equipped with the feed valve, and the bottom is equipped with the bleeder valve, the slow upwards rotation of auger stem, and the mixture is discharged from auger stem's bottom.

Further, the pile cap of the utility model is of a reinforced concrete structure.

The utility model discloses the beneficial effect who produces is: the utility model discloses a CFG stake composite foundation construction equipment and construction method: 1. the method can realize that the soil between piles does not need to be cleaned again by digging the foundation pit and backfilling for many times; 2. the shaping pipe can enable the pile body to be poured into the required pile top height at one time, cutting operation is not needed, and safety and construction efficiency are improved; 3. the shaping pipe can block and restrain the spiral drill rod from the outside, so that the spiral drill rod is prevented from shaking to influence the verticality of the drilled hole; 4. the setting part is more convenient and safer to mount and dismount.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a sizing tube and a base according to an embodiment of the present invention;

fig. 2 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 3 is a schematic diagram of a backfill structure according to an embodiment of the present invention;

in the figure: 1. shaping pipes; 2. a base; 3. a auger stem; 4. riveting; 5. a base soil layer; 6. a first layer of sealing soil; 7. sealing soil on the second layer; 8. a mattress layer; 9. a filler; 10. a pile body; 11. and (4) pile caps.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1-3, the utility model discloses CFG stake composite foundation construction equipment, the device includes: the method comprises the following steps that (1) a shaping pipe, a base 2, a spiral drill rod 3, rivets 4, a foundation soil layer 5, a first layer of sealing soil 6, a second layer of sealing soil 7, a mattress layer 8, a filler 9, a pile body 10 and a pile cap 11 are arranged; wherein:

pile points are arranged on a foundation soil layer 5 at the bottom of a foundation pit, and the sizing pipes 1 and the base 2 are spliced together, so that the sizing pipes 1 form a cylinder and are aligned with the pile points; the base 2 is provided with a rivet 4, the rivet 4 penetrates through the base 2 and is inserted into the foundation soil layer 5, and the base 2 is fixed; the bottom of the spiral drill rod 3 extends into the shaping pipe 1, a drill hole is formed by driving the spiral drill rod 3 to rotate downwards, a mixture is fed into the drill hole, and the spiral drill rod 3 is drawn out;

drilling and solidifying the mixture in the shaping pipe to form a pile body 10, removing the rivet 4, and separating the shaping pipe 1 and the base 2; backfilling a first layer of sealing soil 6 above the foundation soil layer 5, arranging a pile cap 11 at the top of a pile body 10, backfilling a second layer of sealing soil 7 above the pile cap 11, paving a mattress layer 8 above the second layer of sealing soil 7, and paving a filler 9 above the mattress layer 8.

The structure of the sizing pipe 1 is as follows: the device consists of two semicylinders, and the two semicylinders are spliced together to form a complete cylinder. The base 2 has the structure that: constitute by two cuboids, all seted up a semicircle through-hole on every cuboid, the semicircle through-hole top on two cuboids is fixed respectively to two semicylinders of setting pipe 1.

The rivets 4 are provided in plurality and are respectively symmetrically arranged on two sides of the base 2. Auger stem 3 is hollow structure, and the top is equipped with the feed valve, and the bottom is equipped with the bleeder valve, and auger stem 3 slowly upwards rotates, and the mixture is discharged from auger stem 3's bottom. The pile cap 11 is of a reinforced concrete structure.

The utility model discloses CFG stake composite foundation construction equipment's construction method, including following step:

1. pile point arrangement:

digging a foundation pit according to a construction drawing; compacting and flattening a foundation soil layer at the bottom of the foundation pit; finding a pile point;

2. the installation device comprises:

splicing the bases of the device together to form a cylindrical shaping pipe, fixing the base at the bottom of the positioning piece on the foundation soil layer by using rivets according to a construction drawing, and ensuring that the base is in a horizontal state;

3. drilling to form a hole:

the bottom end of the spiral drill rod extends into the shaping pipe, the distance between the spiral drill rod and each position of the shaping pipe is measured, and the spiral drill rod is adjusted until the spiral drill rod and the shaping pipe are located at the same center line;

the spiral drill rod is driven to rotate downwards, the shaping pipe blocks and positions the spiral drill rod outside, and the spiral drill rod stops when a drill hole with the required depth is drilled in the foundation soil layer;

conveying the stirred mixture into an inner hole of an auger stem, opening a discharge valve after the inner hole is filled, slowly rotating the auger stem upwards, and discharging the mixture from the bottom end of the auger stem;

stopping conveying the mixture after the auger stem leaves the shaping pipe, and filling the drill hole and the shaping pipe with the mixture;

standing and maintaining for many days, drilling holes, and solidifying the mixed material in the shaping pipe into a pile body;

4. dismantling the device:

pulling out the rivet, and separating the base from the shaping pipe;

5. backfilling a first soil sealing layer:

disassembling each positioning piece to expose the pile body originally arranged in the shaping pipe;

carrying out performance test on the pile body;

backfilling soil into the foundation pit, leveling and compacting the backfilled soil to form a first soil sealing layer, wherein the top end of the pile body extends out of the first soil sealing layer;

6. building pile caps:

building a pile cap of a reinforced concrete structure above the pile body, and embedding the top end of the pile body into the pile cap;

7. and (3) laying of fillers:

backfilling soil to the pile caps, sealing each pile cap by the soil, and flattening and compacting the backfilled soil to form a second soil sealing layer;

paving a mattress layer above the second soil sealing layer;

and paving roadbed filling above the mattress layer.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A CFG pile composite foundation construction device is characterized in that the device comprises: the device comprises a shaping pipe (1), a base (2), a spiral drill rod (3), rivets (4), a foundation soil layer (5), a first layer of sealing soil (6), a second layer of sealing soil (7), a mattress layer (8), a filler (9), a pile body (10) and a pile cap (11); wherein:

pile points are arranged on a foundation soil layer (5) at the bottom of a foundation pit, and the sizing pipes (1) and the base (2) are spliced together to enable the sizing pipes (1) to form a cylinder and align to the pile points; the base (2) is provided with a rivet (4), the rivet (4) penetrates through the base (2) and is inserted into the foundation soil layer (5), and the base (2) is fixed; the bottom of the spiral drill rod (3) extends into the shaping pipe (1), a drill hole is formed by driving the spiral drill rod (3) to rotate downwards, the mixture is fed into the drill hole, and the spiral drill rod (3) is drawn out;

drilling and solidifying the mixture in the shaping pipe to form a pile body (10), removing the rivet (4), and separating the shaping pipe (1) from the base (2); backfilling a first layer of sealing soil (6) above a foundation soil layer (5), arranging a pile cap (11) at the top of a pile body (10), backfilling a second layer of sealing soil (7) above the pile cap (11), paving a mattress layer (8) above the second layer of sealing soil (7), and paving a filler (9) above the mattress layer (8) to form the CFG pile composite foundation construction device.

2. The CFG pile composite foundation construction device of claim 1, wherein the sizing pipe (1) has a structure of: the device consists of two semicylinders, and the two semicylinders are spliced together to form a complete cylinder.

3. A CFG pile composite foundation construction device according to claim 2, characterized in that the base (2) is structured as: constitute by two cuboids, all seted up a semicircle through-hole on every cuboid, the semicircle through-hole top on two cuboids is fixed respectively to two semicylinders of setting pipe (1).

4. A CFG pile composite foundation construction device according to claim 1, wherein the rivets (4) are provided in plural numbers, respectively symmetrically provided on both sides of the base (2).

5. A CFG pile composite foundation construction device according to claim 1, characterized in that the auger stem (3) is hollow, the top is provided with a feed valve, the bottom is provided with a discharge valve, the auger stem (3) is slowly rotated upwards, and the mixture is discharged from the bottom of the auger stem (3).

6. A CFG pile composite foundation construction device according to claim 1, characterized in that the pile cap (11) is a reinforced concrete structure.