Jacket for cast-in-place pile

Abstract

The jacket for the cast-in-place pile comprises a base and a supporting frame, the base is placed at a pile casing opening of a construction platform, the interior of the base is hollow and communicated with the pile casing opening, the supporting frame is placed on the base, and a plurality of placing units used for vertically placing cast-in-place pile guide pipes are arranged on the supporting frame. The shelving unit is located in the hollow-out interior of the base, and the cast-in-place pile guide pipe is led into a pile casing opening. The construction platform is built on a seabed surface, and a space for placing at least three spliced cast-in-place pile guide pipes is reserved between the construction platform and the seabed surface; the utility model has the advantages that the utilization rate of the construction site is improved, the transition is quick and convenient, and the construction is efficient and safe.

Description

Technical Field

[0001] The utility model belongs to the technical field of jacket, and particularly relates to a jacket for cast-in-place piles. Background Art

[0002] During the pouring process of cast-in-place piles, a conduit is required. However, some cast-in-place piles have a large diameter and a long length. For example, the pile foundation diameter of the bored cast-in-place piles in the third bid section of the north navigation channel of the Hangzhou Bay Sea-Crossing Bridge is 2.5 m, the total number of pile foundations is 84, and the pile length is 126 m, which are divided into the main tower No. 9 pier, the auxiliary pier No. 10 pier, and the side pier No. 11 pier. Since the rotary drilling rig is used for drilling construction and the hole-forming speed is relatively fast, in order to ensure the bottom quality of the cage lowering and pouring, the hole needs to be cleaned twice, resulting in complicated procedures. In addition, the existing conduit length is generally 3 m. If the conduits are placed one by one and spliced during the construction process, the construction efficiency is very low. Since the construction platform is on the seabed surface, so many conduits are placed horizontally on the construction platform, which will lead to the disadvantages of unsafe storage and large occupation of the construction site. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and to provide a jacket for cast-in-place piles that can improve the utilization rate of the construction site, is fast and convenient for transfer, and has high construction efficiency and safety.

[0004] The purpose of the utility model is achieved by the following technical solutions. This jacket for cast-in-place piles includes a base and a support frame. The base is placed at the casing opening of the construction platform. The inside of the base is hollow and communicates with the casing opening. The support frame is placed on the base, and several placing units for vertically placing the cast-in-place pile conduits are provided on the support frame. The placing units are located inside the hollow part of the base, and the cast-in-place pile conduits are led into the casing opening. The construction platform is built on the seabed surface, and a space for placing at least three spliced cast-in-place pile conduits is left between the construction platform and the seabed surface.

[0005] The beneficial effects of the utility model are as follows: compared with the prior art, through the above structural arrangement, multiple sections of cast-in-place pile conduits can be spliced and placed on the support frame, and the cast-in-place pile conduits are vertically placed without horizontal placement, thus changing the existing storage position and placement method of cast-in-place piles, having the advantages of improving the utilization rate of the construction site, being fast and convenient for transfer, safer for conduit storage, greatly improving the construction efficiency, and having a low manufacturing cost.

[0006] Preferably, standing platforms are provided at the four corners of the support frame, and twelve placing units are evenly distributed on the support frame. Through the above structural arrangement, it is convenient for construction workers to stand on the standing platforms to operate and construct the cast-in-place pile conduits on the placing units.

[0007] Preferably, the shelving unit includes two symmetrically distributed shelving plates. Both shelving plates are mounted on the support frame through a connecting shaft and a hinge seat. Each shelving plate is provided with a semi-circular hole, and the two holes are symmetrically distributed to form a shelving hole for shelving the cast-in-place pile conduit. With the above structure, through the hinge connection between the two shelving plates and the support frame, it is more convenient to shelve and remove the cast-in-place pile conduit through the shelving hole.

[0008] Preferably, the hinge seat is fixed on the support frame. One end of the connecting shaft is inserted into the hinge seat, and the other end is fixed on the shelving plate. Each shelving plate is provided with two hinge seats. Each shelving plate is provided with two symmetrically distributed lifting handles. Through the connection between the connecting shaft and the hinge seat, the installation between the shelving plate and the support frame is convenient and the manufacturing cost is lower. At the same time, the lifting handles are provided to facilitate the construction personnel to lift and place the shelving plate.

[0009] Preferably, the support frame is formed by horizontally and vertically splicing a plurality of I-beams, and through holes equal in number to the shelving units are provided inside the support frame. With the above structure, the support frame is more convenient to manufacture, and the through holes are provided to facilitate the vertical storage of the cast-in-place pile conduit.

[0010] Preferably, the base is formed by horizontally and vertically splicing a plurality of I-beams to form a rectangular frame in a cross shape. Limit plates are respectively fixed on two symmetric sides of the base, and two lifting lugs are welded on each of the two limit plates. With the above structure, the base is more convenient to manufacture. The limit plates can limit the movement and position of the support frame. By providing the lifting lugs, it is convenient to hoist the base.

[0011] Preferably, diagonal braces are fixed at the four corners inside the base, so that the strength of the base is better. Description of the Drawings

[0012] Figure 1 is a three-dimensional structural schematic diagram of the conduit rack for cast-in-place piles of the present invention.

[0013] Figure 2 is a schematic diagram of the actual application structure of the conduit rack for cast-in-place piles of the present invention.

[0014] The reference numerals in the drawings are respectively: 1, base; 2, support frame; 3, construction platform; 4, casing opening; 5, shelving unit; 6, limit plate; 7, lifting lug; 11, diagonal brace; 21, standing platform; 22, through hole; 51, shelving plate; 52, connecting shaft; 53, hinge seat; 54, shelving hole; 55, lifting handle. Detailed Embodiment

[0015] The following will introduce the present utility model in detail with reference to the accompanying drawings: As shown in the attached Figure 1 , 2 As shown, the present utility model includes a base 1 and a support frame 2. The base 1 is placed at the casing opening 4 of the construction platform 3. The inside of the base 1 is hollow and communicates with the casing opening 4. The support frame 2 is placed on the base 1, and a number of placing units 5 for vertically placing the cast-in-place pile conduit are provided on the support frame 2. The placing units 5 are located inside the hollow part of the base 1, and the cast-in-place pile conduit passes into the casing opening 4. The construction platform 3 is built on the seabed surface, and there is a space between the construction platform 3 and the seabed surface for placing at least three spliced cast-in-place pile conduits.

[0016] Station platforms 21 are provided at the four corners of the support frame 2, and there are twelve placing units 5 which are evenly distributed on the support frame 2.

[0017] The placing unit 5 includes two symmetrically distributed placing plates 51. Both placing plates 51 are installed on the support frame 2 through a connecting shaft 52 and a hinge seat 53, and both placing plates 51 are provided with semi-circular holes. The two holes form a placing hole 54 for placing the cast-in-place pile conduit by being symmetrically distributed with each other. A raised ring is provided on the outer radial wall of the cast-in-place pile conduit. This is a common cast-in-place pile conduit in the construction industry. The cast-in-place pile conduit is placed on the placing hole 54 through the raised part.

[0018] The hinge seat 53 is fixed on the support frame 2. One end of the connecting shaft 52 is inserted into the hinge seat 53, and the other end is fixed on the placing plate 51. And each placing plate 51 is provided with two hinge seats 53; two symmetrically distributed lifting handles 55 are provided on each placing plate 51. When it is necessary to place the cast-in-place pile conduit, the spliced conduit is lifted into the through hole 22 by a crane. At this time, the two placing plates 51 are turned open through the lifting handles 55; if it is necessary to place, the two placing plates 51 are closed through the lifting handles 55, and the raised part of the cast-in-place pile conduit is placed on the placing hole 54.

[0019] The support frame 2 is formed by horizontally and vertically splicing a number of I-beams, and through holes 22 equal in number to the placing units 5 are provided inside the support frame 2.

[0020] The base 1 is formed by horizontally and vertically splicing a number of I-beams to form a rectangular frame in the shape of a Chinese character "tian", and limiting plates 6 are respectively fixed on two symmetric sides of the base 1, and two lifting lugs 7 are welded on both limiting plates 6.

[0021] Oblique supports 11 are fixed at the four corners inside the base 1.

[0022] The drilling depth of this project to the construction platform 3 is 148 m, and the distance from the construction platform 3 to the seabed surface is about 14 m. Place the pre-assembled conduit rack at the casing mouth 4 and open 12 storage holes 54, namely storage openings; splice 4 sections of 3-m-long cast-in-place pile conduits on each storage hole 54. It is confirmed by the actual construction on site that when the conduits are not pre-assembled, the lowering time of 50 conduits with a total length of 148.5 m is 4 h; after pre-assembling the conduits, the lowering time of 12 sections of conduits is 1 - 2 h. The lifting rate exceeds 100%. It can be seen that pre-assembling the conduits in advance can greatly shorten the conduit lowering time and is convenient for storage after disassembling the conduits.

[0023] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A pipe frame for cast-in-place piles, comprising a base (1) and a support frame (2), characterized in that: The base (1) is placed at the casing opening (4) of the construction platform (3). The interior of the base (1) is hollow and communicates with the casing opening (4). The support frame (2) is placed on the base (1), and a number of placing units (5) for vertically placing the cast-in-place pile conduits are provided on the support frame (2). The placing units (5) are located inside the hollow part of the base (1), and the cast-in-place pile conduits are inserted into the casing opening (4). The construction platform (3) is built on the seabed surface, and a space for placing at least three spliced cast-in-place pile conduits is left between the construction platform (3) and the seabed surface.

2. The pipe frame for cast-in-place piles according to claim 1, characterized in that: Station platforms (21) are provided at the four end corners of the support frame (2), and there are twelve placing units (5) which are evenly distributed on the support frame (2).

3. The pipe frame for cast-in-place piles according to claim 1 or 2, characterized in that: The placing unit (5) includes two symmetrically distributed placing plates (51). Both of the two placing plates (51) are installed on the support frame (2) through a connecting shaft (52) and a hinge seat (53). Both of the two placing plates (51) are provided with semi-circular holes, and the two holes form a placing hole (54) for placing the cast-in-place pile conduit by being symmetrically distributed with each other.

4. The pipe frame for cast-in-place piles according to claim 3, characterized in that: The hinge seat (53) is fixed on the support frame (2). One end of the connecting shaft (52) is inserted into the hinge seat (53), and the other end is fixed on the placing plate (51). Each placing plate (51) is provided with two hinge seats (53). Two symmetrically distributed lifting handles (55) are provided on each placing plate (51).

5. The pipe frame for cast-in-place piles according to claim 1, characterized in that: The support frame (2) is formed by horizontally and vertically splicing a number of I-beams, and through holes (22) equal in number to the placing units (5) are provided inside the support frame (2).

6. The pipe frame for cast-in-place piles according to claim 1, characterized in that: The base (1) is formed by horizontally and vertically splicing a number of I-beams to form a rectangular frame in a cross shape. Limit plates (6) are respectively fixed on two symmetric sides of the base (1), and two lifting lugs (7) are welded on both of the two limit plates (6).

7. The pipe frame for cast-in-place piles according to claim 1, characterized in that: Diagonal braces (11) are fixed at the four end corners inside the base (1).

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