Underwater steel pipe pile sinking and connecting device and construction method therefor

Abstract

Disclosed in the present invention are an underwater steel pipe pile sinking and connecting device and a construction method therefor. The device comprises a steel pipe pile driven into underwater ground, and further comprises an auxiliary pile arranged above the steel pipe pile and detachably connected to the steel pipe pile, a first flange fixedly welded to the top opening of the steel pipe pile, a second flange fixedly welded to the bottom opening of the auxiliary pile, screws passing through first through holes formed in the first and second flanges, connecting blocks fitted to the bottom end of the first flange and matched with the screws, and driving motors connected to the tops of the screws and used for rotating the screws to be threadedly connected to or separated from the connecting blocks. An input end of each driving motor is connected to an external hydraulic station. In the present invention, the steel pipe pile and the auxiliary pile are detachably connected, and the steel pipe pile and the auxiliary pile can be automatically separated underwater, thereby realizing an unmanned underwater cutting process, thereby avoiding the safety risks of deep-water operations by personnel, and also preventing the problems such as poor cutting accuracy and uneven positioning caused by manual underwater cutting of steel pipe piles.

Description

Underwater steel pipe pile sinking connecting device and construction method thereof TECHNICAL FIELD

[0001] The present application relates to a connecting device and a construction method thereof, in particular to an underwater steel pipe pile sinking connecting device and a construction method thereof. BACKGROUND

[0002] In water transportation and water conservancy engineering, the safety and stability of underwater pile foundation structure is very important for the safety and service life of the entire water transportation and water conservancy project. During the construction of underwater steel pipe pile sinking, due to the influence of rivers, lakes and seas, the steel pipe pile cannot be directly sunk to the designed elevation, or the traditional manual diving cutting process is used after the whole steel pipe pile is sunk into the pile position. This process has high requirements for personnel, poor environmental adaptability, poor cutting precision, high cost, and great safety hazards in deep water construction. SUMMARY

[0003] The first object of the present application is to provide an underwater steel pipe pile sinking connecting device which can effectively control the sinking elevation precision of the steel pipe pile and ensure the safety of the operation.

[0004] The second object of the present application is to provide a construction method of the underwater steel pipe pile sinking connecting device.

[0005] Technical scheme: The present application discloses an underwater steel pipe pile sinking connecting device, which comprises a steel pipe pile sunk into water, an auxiliary pile arranged above the steel pipe pile and detachably connected with the steel pipe pile, a first flange fixedly welded on the top pipe opening of the steel pipe pile, a second flange fixedly welded on the bottom pipe opening of the auxiliary pile, a screw rod penetrating a first through hole formed in the first flange and the second flange, a connecting block arranged at the bottom end of the first flange and matched with the screw rod, and a driving motor connected with the top of the screw rod for rotating the screw rod to threadedly connect or separate the connecting block.

[0006] Further, an oil cylinder for assisting in separating the connecting block and the screw rod is installed on the second flange, and a second through hole is formed in the second flange for the piston of the oil cylinder to pass through. In the initial state, the piston passes through the second through hole and is in contact with the top end of the connecting block.

[0007] Further, the oil cylinder is symmetrically arranged on both sides of the screw rod.

[0008] Further, a plurality of pull-out rods for pulling out the auxiliary pile are fixedly installed on the inner wall of the auxiliary pile in annular array.

[0009] Further, a cross-shaped reinforcing structure is integrally formed on the inner wall of the first flange.

[0010] Further, the inner wall of the auxiliary pile is fixedly welded with a support ring frame, and the driving motor is installed on the support ring frame.

[0011] Further, the number of the screw rods, the driving motors and the connecting blocks is consistent and each of them is provided with a plurality of screw rods, driving motors and connecting blocks, and the plurality of screw rods, driving motors and connecting blocks are respectively arranged in a ring array with the center of the auxiliary pile.

[0012] Based on the same inventive concept, the application further discloses a construction method of the underwater steel pipe pile sinking connecting device, which comprises the following steps:

[0013] S1. Preparing to assemble the steel pipe pile and the auxiliary pile;

[0014] S2. Connecting the steel pipe pile and the auxiliary pile to form an integral component;

[0015] S3. Making the steel pipe pile face downward and sinking the integral component into the water surface until the top of the auxiliary pile reaches a preset elevation, and stopping piling;

[0016] S4. Separating the auxiliary pile and the steel pipe pile, adjusting and controlling the driving motor to drive the screw rod to rotate, so that the screw rod is separated from the connecting block, and the connecting block is separated due to gravity; when the screw rod or the driving motor cannot normally operate, adjusting and controlling the oil cylinder to make the piston of the oil cylinder elongate downward, and the piston pushes the connecting block to move downward until the connecting block is separated from the screw rod and falls off;

[0017] S5. Pulling out the auxiliary pile by pulling the pulling rod upward.

[0018] Further, in the step S1, the preparing to assemble the steel pipe pile refers to welding the first flange at the pipe opening at the top of the steel pipe pile;

[0019] The step S1 of preparing to assemble the auxiliary pile comprises the following steps:

[0020] The support ring frame and the pulling rod are fixedly welded on the inner wall of the auxiliary pile;

[0021] The second flange is welded at the pipe opening at the bottom of the auxiliary pile, and the auxiliary pile is placed on the top of the steel pipe pile;

[0022] The top of the screw rod is fixedly connected with the output end of the driving motor, the driving motor is installed on the support ring frame, and the screw rod is aligned with the first through hole of the second flange;

[0023] The oil cylinder is installed on the second flange, the oil cylinder is symmetrically arranged on the two sides of the screw rod, and the piston of the oil cylinder is aligned with the second through hole of the second flange.

[0024] Further, in the step S2, the connecting the steel pipe pile and the auxiliary pile comprises the following steps:

[0025] Aligning the second through holes of the steel pipe pile and the auxiliary pile;

[0026] The oil cylinder is regulated to pass the piston through the second through hole of the second flange, and the bottom end of the piston of the oil cylinder is flush with the bottom of the first flange;

[0027] The connecting block is placed on the bottom of the first flange, and the driving motor is regulated to rotate the screw rod through the first through hole of the second flange and the first flange and be screwed with the connecting block.

[0028] Beneficial effects: Compared with the prior art, the steel pipe pile and the auxiliary pile are detachably connected through the screw rod, the connecting block and the driving motor, and the steel pipe pile and the auxiliary pile can be automatically separated underwater, realizing the underwater unmanned cutting process, avoiding the safety risks of personnel deep water operation, avoiding safety hazards, avoiding the problems of poor cutting precision and uneven positioning caused by manual diving cutting of the steel pipe pile, effectively controlling the underwater sinking pile elevation precision of the steel pipe pile, and reducing the construction cost.

[0029] The piston rod of the oil cylinder is extended to push the connecting block away to provide protection for realizing the underwater unmanned cutting process. The steel pipe pile and the auxiliary pile form an integral member, the elevation and length of the auxiliary pile are controlled to indirectly control the elevation of the steel pipe pile, which is beneficial to improve the positioning precision of the steel pipe pile under deep water conditions. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a structural schematic diagram of the present application;

[0031] Fig. 2 is a structural schematic diagram of the present application;

[0032] Fig. 3 is a structural schematic diagram of the support ring frame and the driving motor of the present application;

[0033] Fig. 4 is a front view of Fig. 3 of the present application;

[0034] Fig. 5 is a sectional view of Fig. 3 of the present application;

[0035] Fig. 6 is a top view of the first flange of the present application;

[0036] Fig. 7 is a top view of the second flange of the present application. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be further described below with reference to the drawings.

[0038] Example 1

[0039] As shown in FIG. 1 and FIG. 2, the underwater steel pipe pile sinking connecting device of the application comprises a steel pipe pile 1 sunk into water, a first flange 2, an auxiliary pile 3, a second flange 4, a driving motor 5, an oil cylinder 6, a screw rod 7 and a connecting block 8. The first flange 2 is fixedly welded at the top pipe opening of the steel pipe pile 1. Preferably, as shown in FIG. 3, a cross-shaped reinforcing structure is integrally formed on the inner wall of the first flange 2. The second flange 4 is fixedly welded at the bottom pipe opening of the auxiliary pile 3. As shown in FIG. 3 to FIG. 5, a support ring frame 10 is fixedly welded on the inner wall of the auxiliary pile 3 and located above the second flange 4. The driving motor 5 is installed on the support ring frame 10. The top of the screw rod 7 is fixedly connected with the output end of the driving motor 5. The input end of the driving motor 5 is connected with an external hydraulic station. During pile driving, the hydraulic station is arranged on land, which is convenient for the operator to control the driving motor 5. As shown in FIG. 6 and FIG. 7, a first through hole 11 is formed in the first flange 2 and the second flange 4 for the screw rod 7 to pass through. The connecting block 8 is arranged at the bottom end of the first flange 2. The driving motor 5 drives the screw rod 7 to rotate, so that the screw rod 7 is threadedly connected with the connecting block 8 after passing through the first flange 2 and the second flange 4. The screw rod 7 and the connecting block 8 are arranged to connect the steel pipe pile 1 and the auxiliary pile 3 into a whole, and the steel pipe pile 1 and the auxiliary pile 3 are detachably connected. When the driving motor 5 drives the screw rod 7 to rotate reversely, the screw rod 7 is separated from the connecting block 8, so that the steel pipe pile 1 and the auxiliary pile 3 can be separated. The number of the screw rod 7, the driving motor 5 and the connecting block 8 is consistent and each of them is provided with multiple ones. The multiple screw rods 7, driving motors 5 and connecting blocks 8 are respectively arranged in a ring array around the center of the auxiliary pile 3. The number of the screw rod 7, the driving motor 5 and the connecting block 8 is preferably 4.

[0040] The oil cylinder 6 is installed on the second flange 4. As shown in FIG. 4, a second through hole 12 is formed in the second flange 4 for the piston of the oil cylinder 6 to pass through. In the initial state, the piston passes through the second through hole 12 and is in abutment with the top end of the connecting block 8. Preferably, the oil cylinder 6 is symmetrically arranged on both sides of the screw rod 7. When the driving motor 5 and the screw rod 7 fail, the piston of the oil cylinder 6 pushes the connecting block 8 downward, so that the connecting block 8 is separated from the screw rod 7, and the steel pipe pile 1 and the auxiliary pile 3 are separated.

[0041] A plurality of ring array distributed pull-out rods 9 for pulling out the auxiliary pile 3 are fixedly installed on the inner wall of the auxiliary pile 3. The number of the pull-out rods 9 is preferably 4. When the steel pipe pile 1 and the auxiliary pile 3 are separated, the pull-out rods 9 are pulled upward to pull out the auxiliary pile 3. Preferably, a horizontal rod is fixedly welded on the top inner wall of the pull-out rod 9, which is convenient for connecting the hoisting equipment or lifting equipment with the pull-out rod 9 when the pull-out rod 9 is pulled out upward.

[0042] In summary, the embodiment utilizes the screw rod 7 to connect the driving motor 5 and the connecting block 8, so that the steel pipe pile 1 and the auxiliary pile 3 are connected to form a whole, and are driven into water according to the actual construction requirements, and the driving is stopped when the top of the auxiliary pile 3 reaches the preset height, that is, the steel pipe pile 1 reaches the preset position. After the screw rod 7 is separated from the connecting block 8 by starting the land hydraulic station to rotate the hydraulic drive device, the auxiliary pile 3 is removed, the underwater steel pipe pile 1 sinking construction is completed, and the driving motor 5 or the oil cylinder 6 can realize the automatic separation of the steel pipe pile 1 and the auxiliary pile 3 under water, which eliminates the risk of manual deep water operation, effectively controls the steel pipe pile underwater sinking elevation accuracy, and provides effective measures for the underwater steel pipe pile construction in actual engineering.

[0043] Embodiment 2

[0044] The construction method of the underwater steel pipe pile sinking connecting device comprises the following steps:

[0045] S1. Assembling the steel pipe pile 1 and the auxiliary pile 3. Specifically, the first flange 2 is welded at the pipe opening at the top of the steel pipe pile 1; the support ring frame 10 and the pulling rod 9 are fixedly welded on the inner wall of the auxiliary pile 3; the second flange 4 is welded at the pipe opening at the bottom of the auxiliary pile 3, and the auxiliary pile 3 is placed on the top of the steel pipe pile 1; the top of the screw rod 7 is fixedly connected with the output end of the driving motor 5, the driving motor 5 is installed on the support ring frame 10, and the screw rod 7 is aligned with the first through hole 11 of the second flange 4; the oil cylinder 6 is installed on the second flange 4, the oil cylinder 6 is symmetrically arranged on both sides of the screw rod 7, and the piston of the oil cylinder 6 is aligned with the second through hole 12 of the second flange 4.

[0046] S2. Connecting the steel pipe pile 1 and the auxiliary pile 3 to form a whole component; specifically, the second through holes 12 of the steel pipe pile 1 and the auxiliary pile 3 are aligned; the oil cylinder 6 is controlled so that the piston of the oil cylinder 6 passes through the second through hole 12 of the second flange 4, and the bottom end of the piston of the oil cylinder 6 is flush with the bottom of the first flange 2; the connecting block 8 is placed on the bottom of the first flange 2, the driving motor 5 is controlled to rotate the screw rod 7 to pass through the first through hole 11 of the second flange 4 and the first flange 2, and then the screw rod 7 is threadedly connected with the connecting block 8, that is, the steel pipe pile 1 and the auxiliary pile 3 are connected to form a whole; wherein the internal diameters of the steel pipe pile 1 and the auxiliary pile 3 are large enough for a person to pass through, which facilitates the installation of the steel pipe pile 1 and the auxiliary pile 3.

[0047] S3. The steel pipe pile 1 is made to face downward and the whole component is sunk into the water surface until the top of the auxiliary pile 3 reaches the preset elevation, and the driving is stopped; in actual operation, the top elevation of the steel pipe pile 1 in water is not easy to control, the top elevation and the length of the auxiliary pile 3 are convenient to control, therefore the top elevation of the steel pipe pile 1 is controlled by controlling the top elevation of the auxiliary pile 3, and the top elevation of the steel pipe pile 1 in water is fixed after the separation, and the top elevation of the underwater steel pipe pile 1 is optimized; wherein the preset elevation is set by the actual construction conditions, and preferably, the preset elevation of the steel pipe pile 1 is twenty meters or less under water.

[0048] S4. Separate the auxiliary pile 3 and the steel pipe pile 1, and control the driving motor 5 to drive the screw rod 7 to rotate, so that the screw rod 7 is separated from the connecting block 8, and the connecting block 8 is separated due to gravity; when the screw rod 7 or the driving motor 5 cannot normally operate, the oil cylinder 6 is controlled to make the piston extend downward, and the piston pushes the connecting block 8 to move downward until the connecting block 8 is separated from the screw rod 7 and falls off.

[0049] S5. Pull out the auxiliary pile 3 by pulling the pull rod 9 upward.

Claims

1. A pile driving connection for underwater steel pipe piles, comprising a steel pipe pile (1) driven into the water, characterized in that: The utility model also includes an auxiliary pile (3) arranged above the steel pipe pile (1) and detachably connected with the steel pipe pile (1), a first flange (2) fixedly welded on the top pipe opening of the steel pipe pile (1), a second flange (4) fixedly welded on the bottom pipe opening of the auxiliary pile (3), a screw rod (7) penetrating through the first through hole (11) formed on the first flange (2) and the second flange (4), a connecting block (8) arranged on the bottom end of the first flange (2) and matched with the screw rod (7), and a driving motor (5) connected with the top of the screw rod (7) and used for rotating the screw rod (7) to make the screw rod (7) threadedly connected with or separated from the connecting block (8).

2. A pile sinking connection for underwater steel pipe piles as claimed in claim 1, characterised in that: The second flange (4) is provided with an oil cylinder (6) used for assisting in separating and connecting the connecting block (8) and the screw rod (7), and the second flange (4) is provided with a second through hole (12) through which a piston of the oil cylinder (6) penetrates, and the piston is in abutment with the top end of the connecting block (8) after penetrating through the second through hole (12) in the initial state.

3. A pile sinking connection for underwater steel pipe piles as claimed in claim 2, characterised in that: The oil cylinder (6) is symmetrically arranged on both sides of the screw rod (7).

4. A pile sinking attachment for underwater steel pipe piles according to claim 1, characterised in that: The inner wall of the auxiliary pile (3) is fixedly provided with a plurality of pull-out rods (9) arranged in a ring array and used for pulling out the auxiliary pile (3).

5. A pile driving connection for underwater steel pipe piles (1) according to claim 1, characterized in that: The inner wall of the first flange (2) is integrally formed with a cross-shaped reinforcing structure.

6. A pile sinking attachment for underwater steel pipe piles according to claim 1, characterised in that: The inner wall of the auxiliary pile (3) is fixedly welded with a support ring frame (10), and the driving motor (5) is arranged on the support ring frame (10).

7. A pile sinking attachment for underwater steel pipe piles according to claim 1, characterised in that: The number of the screw rod (7), the driving motor (5) and the connecting block (8) is consistent, and a plurality of the screw rod (7), the driving motor (5) and the connecting block (8) are arranged in a ring array with the center of the auxiliary pile (3) as the center.

8. A method of installing a pile connection device according to any one of claims 1 to 7, characterised in that: The method comprises the following steps: S1. preparing the steel pipe pile (1) and the auxiliary pile (3); S2. connecting the steel pipe pile (1) and the auxiliary pile (3) to form an integral component; S3. making the steel pipe pile (1) face downward and sinking the integral component into the water surface until the top of the auxiliary pile (3) reaches a preset elevation, and stopping piling; S4. separating the auxiliary pile (3) and the steel pipe pile (1), controlling the driving motor (5) to drive the screw rod (7) to rotate, so that the screw rod (7) is separated from the connecting block (8), and the connecting block (8) is separated due to gravity; when the screw rod (7) or the driving motor (5) cannot normally operate, the oil cylinder (6) is controlled to make the piston of the oil cylinder (6) extend downward, the piston pushes the connecting block (8) to move downward until the connecting block (8) is separated from the screw rod (7) and falls off; S5. pulling out the auxiliary pile (3) by pulling the auxiliary pile (3) upward through the pull-out rod (9).

9. A method of installing a pile connection apparatus for underwater steel pipe piles as claimed in claim 8, characterised in that: In the step S1, the preparation of the steel pipe pile (1) comprises the following steps: S1. preparing the steel pipe pile (1) and the auxiliary pile (3); S1. preparing the steel pipe pile (1) and the auxiliary pile (3); S1. preparing the steel pipe pile (1) and the auxiliary pile (3); S1. preparing the steel pipe pile (1) and the auxiliary pile (3); S1. preparing the steel pipe pile (1) and the auxiliary pile (3); S1. preparing the steel pipe pile (1) and the auxiliary pile (3); The oil cylinder (6) is installed on the second flange (4), the oil cylinder (6) is symmetrically arranged on both sides of the screw rod (7), and the piston of the oil cylinder (6) is aligned with the second through hole (12) of the second flange (4).

10. The method of installing a pile connector for an underwater steel pipe pile according to claim 8, wherein: The step of connecting the steel pipe pile (1) and the auxiliary pile (3) in the S2 step comprises the following steps: Align the second through hole (12) of the steel pipe pile (1) and the auxiliary pile (3); The oil cylinder (6) is adjusted so that the piston passes through the second through hole (12) of the second flange (4), and the bottom end of the piston of the oil cylinder (6) is flush with the bottom of the first flange (2); The connecting block (8) is placed on the bottom of the first flange (2), and the driving motor (5) is adjusted to make the screw rod (7) rotate through the first through hole (11) of the second flange (4) and the first flange (2) and be screwed with the connecting block (8).

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