An underwater steel pipe pile driving and connecting device and its construction method

Abstract

The present invention discloses an underwater steel pipe pile sinking connection device and a construction method thereof, comprising a steel pipe pile driven underwater, an auxiliary pile arranged above the steel pipe pile and detachably connected thereto, a first flange fixedly welded to the pipe opening at the top of the steel pipe pile, a second flange fixedly welded to the pipe opening at the bottom of the auxiliary pile, a screw rod penetrating a first through hole opened on the first flange and the second flange, a connecting block fitted at the bottom end of the first flange and matched with the screw rod, and a drive motor connected to the top of the screw rod for rotating the screw rod to threadably connect or separate it from the connecting block, wherein the input end of the drive motor is connected to an external hydraulic station. The steel pipe pile and the auxiliary pile of the present invention are detachably connected, and the steel pipe pile and the auxiliary pile can be automatically separated underwater, realizing an underwater unmanned cutting process, which not only avoids the safety risks of personnel working in deep water, but also avoids the problems of poor cutting accuracy and uneven positioning caused by manual diving to cut steel pipe piles.

Description

Technical Field

[0001] The present invention relates to a connection device and a construction method thereof, and in particular to an underwater steel pipe pile sinking connection device and a construction method thereof. Background Art

[0002] Water transport and water conservancy projects are crucial components of my country's highway transportation system. The safety and stability of underwater pile foundations directly impact the safety and service life of the entire project. During underwater steel pipe pile construction, due to the influence of rivers, lakes, and oceans, the piles cannot be driven directly to the designed elevation. Alternatively, the piles are driven into position and then cut manually using traditional diving techniques. This process requires high professional expertise, poor environmental adaptability, low cutting accuracy, and high costs. Furthermore, deep-water construction poses significant safety risks. Summary of the Invention

[0003] Purpose of the invention: The first purpose of the present invention is to provide a steel pipe pile sinking connection device that can effectively control the underwater sinking height accuracy of steel pipe piles and ensure safe operation.

[0004] The second object of the present invention is to provide a construction method capable of lowering a steel pipe pile sinking connection device.

[0005] Technical solution: The present invention discloses an underwater steel pipe pile sinking connection device, which includes a steel pipe pile driven underwater, and also includes 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 pipe mouth of the steel pipe pile, a second flange fixedly welded to the bottom pipe mouth of the auxiliary pile, a screw passing through a first through hole opened on the first flange and the second flange, a connecting block fitted at the bottom end of the first flange and matched with the screw, and a driving motor connected to the top of the screw for rotating the screw to threadably connect or separate it from the connecting block.

[0006] Furthermore, a cylinder for assisting in separating the connecting block and the screw is installed on the second flange, and a second through hole for the piston of the cylinder to pass through is opened on the second flange. In the initial state, the piston fits with the top of the connecting block after passing through the second through hole.

[0007] Furthermore, the oil cylinders are symmetrically arranged on both sides of the screw.

[0008] Furthermore, a plurality of pull rods distributed in a circular array and used for pulling out the auxiliary piles are fixedly installed on the inner wall of the auxiliary pile.

[0009] Furthermore, a cross with a reinforcement structure is integrally formed on the inner wall of the first flange.

[0010] Furthermore, a support ring frame is fixedly welded to the inner wall of the auxiliary pile, and the drive motor is installed on the support ring frame.

[0011] Furthermore, the number of the screw rods, drive motors and connecting blocks is the same and multiple screw rods, drive motors and connecting blocks are provided, and the multiple screw rods, drive motors and connecting blocks are distributed in a circular array with the center of the auxiliary pile.

[0012] Based on the same inventive concept, the present invention also discloses a construction method of an underwater steel pipe pile sinking connection device, comprising the following steps:

[0013] S1. Prepare and assemble steel pipe piles and auxiliary piles;

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

[0015] S3. Direct the steel pipe pile downward and sink the entire component into the water until the top of the auxiliary pile reaches the preset elevation, then stop piling.

[0016] S4. Separate the auxiliary pile and the steel pipe pile, and adjust the drive motor to rotate the screw, causing the screw to separate from the connecting block, and the connecting block to detach due to gravity. If the screw or drive motor fails to operate normally, adjust the oil cylinder so that its piston extends downward, and the piston pushes the connecting block downward until the connecting block detaches from the screw and falls.

[0017] S5. Pull out the auxiliary pile by pulling the pull rod upwards to pull out the auxiliary pile.

[0018] Furthermore, the preparatory assembly of the steel pipe pile in step S1 includes: welding the first flange to the pipe opening at the top of the steel pipe pile;

[0019] The preparatory assembly of auxiliary piles in step S1 includes the following steps:

[0020] Fix and weld the support ring frame and the pull rod to the inner wall of the auxiliary pile;

[0021] Weld the second flange to the pipe mouth at the bottom of the auxiliary pile and place the auxiliary pile on top of the steel pipe pile;

[0022] The top of the screw is fixedly connected to the output end of the drive motor, and the drive motor is installed on the support ring frame, and the screw 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 both sides of the screw rod, and the piston of the oil cylinder is aligned with the second through hole of the second flange.

[0024] Furthermore, the connecting of the steel pipe piles and the auxiliary piles in step S2 includes the following steps:

[0025] Aligning the first through hole of the steel pipe pile with the first through hole of the auxiliary pile;

[0026] Adjust the oil cylinder so that its piston passes through the second through hole of the second flange and the bottom end of the oil cylinder piston 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 adjusted to rotate the screw through the first through holes of the second flange and the first flange and then threadedly connected to the connecting block.

[0028] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the steel pipe pile and the auxiliary pile are detachably connected by a screw, a connecting block and a driving motor, and the steel pipe pile and the auxiliary pile can be automatically separated underwater, realizing an underwater unmanned cutting process, which not only avoids the safety risks of personnel working in deep water and avoids potential safety hazards, but also avoids the problems of poor cutting accuracy and uneven positioning caused by manual diving cutting of steel pipe piles, can effectively control the elevation accuracy of underwater sinking of steel pipe piles, and reduces construction costs;

[0029] The present invention adopts the setting of the oil cylinder. If the connecting block and the screw become stuck during the disengagement process, the piston rod of the oil cylinder can be adjusted to extend and push the connecting block to be removed, thereby providing a guarantee for the realization of underwater unmanned cutting technology. The present invention forms an integral component by forming a steel pipe pile and an auxiliary pile, and indirectly controls the elevation of the steel pipe pile by controlling the elevation and length of the auxiliary pile, which is beneficial to improving the positioning accuracy of the steel pipe pile under deep water conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0031] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0032] Figure 3 The structure of the support ring frame and the drive motor of the present invention is shown in FIG. Figure 2 ;

[0033] Figure 4 For the present invention Figure 3 The main view;

[0034] Figure 5 For the present invention Figure 3 sectional view of

[0035] Figure 6 is a top view of the first flange of the present invention;

[0036] Figure 7 It is a top view of the second flange of the present invention. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0038] Example 1

[0039] like Figure 1 and Figure 2 As shown, the underwater steel pipe pile sinking connection device of the present invention comprises a steel pipe pile 1 driven into the water, a first flange 2, an auxiliary pile 3, a second flange 4, a driving motor 5, an oil cylinder 6, a screw 7 and a connecting block 8. The first flange 2 is fixedly welded to the top pipe mouth of the steel pipe pile 1. Preferably, as shown in FIG. Figure 3 As shown, the inner wall of the first flange 2 is integrally formed with a cross of a reinforcement structure, and the second flange 4 is fixedly welded to the bottom pipe opening of the auxiliary pile 3, as shown in FIG. Figures 3 to 5 As shown, the inner wall of the auxiliary pile 3 is fixedly welded with a support ring frame 10, the support ring frame 10 is located above the second flange 4, the drive motor 5 is installed on the support ring frame 10, the top of the screw 7 is fixedly connected to the output end of the drive motor 5, and the input end of the drive motor 5 is connected to the external hydraulic station. When piling, the hydraulic station is set on land to facilitate the staff to control the drive motor 5, as shown in FIG. Figure 6 and Figure 7 As shown, the first flange 2 and the second flange 4 are both provided with a first through hole 11 for the screw 7 to pass through, and the connecting block 8 is fitted at the bottom end of the first flange 2. The driving motor 5 drives the screw 7 to rotate, so that the screw 7 passes through the first flange 2 and the second flange 4 and is threadedly connected to the connecting block 8. The setting of the screw 7 and the connecting block 8 connects the steel pipe pile 1 and the auxiliary pile 3 to form a whole, and the steel pipe pile 1 and the auxiliary pile 3 are detachably connected. When the driving motor 5 drives the screw 7 to rotate in the opposite direction, the screw 7 is separated from the connecting block 8, and the steel pipe pile 1 and the auxiliary pile 3 can be disassembled; wherein the number of the screw 7, the driving motor 5 and the connecting block 8 is the same and there are multiple of them, and the multiple screws 7, the driving motor 5 and the connecting block 8 are respectively distributed in a circular array with the center of the auxiliary pile 3, and the number of the screw 7, the driving motor 5 and the connecting block 8 is preferably 4.

[0040] The second flange 4 is provided with an oil cylinder 6. Figure 4 As shown, a second through hole 12 is provided on the second flange 4 for the piston of the oil cylinder 6 to pass through. In the initial state, the piston fits against the top of the connecting block 8 after passing through the second through hole 12. Preferably, the oil cylinder 6 is symmetrically arranged on both sides of the screw 7; when the drive motor 5 and the screw 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 7, thereby realizing the separation of the steel pipe pile 1 and the auxiliary pile 3.

[0041] The inner wall of the auxiliary pile 3 is fixedly installed with multiple pulling rods 9 distributed in a circular array for removing the auxiliary pile 3. The number of pulling rods 9 is preferably 4. When separating the steel pipe pile 1 and the auxiliary pile 3, the auxiliary pile 3 is pulled out by pulling the pulling rod 9 upward; preferably, a cross bar is fixedly welded to the inner wall of the top of the pulling rod 9, which is convenient for connecting the lifting equipment or hoisting equipment to the pulling rod 9 when pulling the pulling rod 9 upward.

[0042] In summary, this embodiment utilizes a screw 7 to connect the drive 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 then driven underwater according to actual construction requirements. Pile driving is stopped when the top of the auxiliary pile 3 reaches a preset height, that is, the steel pipe pile 1 reaches the preset position. After the onshore hydraulic station is started to rotate the hydraulic drive device to separate the screw 7 from the connecting block 8, the auxiliary pile 3 is removed, and the underwater steel pipe pile 1 construction is completed. The drive motor 5 or the oil cylinder 6 can be adjusted to automatically disengage the steel pipe pile 1 and the auxiliary pile 3 underwater, eliminating the risks of artificial deep-water operations while effectively controlling the underwater sinking elevation accuracy of the steel pipe pile, providing an effective measure for underwater steel pipe pile construction in actual projects.

[0043] Example 2

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

[0045] S1. Prepare to assemble the steel pipe pile 1 and the auxiliary pile 3. Specifically, weld the first flange 2 to the pipe opening at the top of the steel pipe pile 1; fix and weld the support ring frame 10 and the pull rod 9 to the inner wall of the auxiliary pile 3; weld the second flange 4 to the pipe opening at the bottom of the auxiliary pile 3, and place the auxiliary pile 3 on top of the steel pipe pile 1; fix the top of the screw rod 7 to the output end of the drive motor 5, install the drive motor 5 on the support ring frame 10, and align the screw rod 7 with the first through hole 11 of the second flange 4; install the oil cylinder 6 on the second flange 4, symmetrically arranged on both sides of the screw rod 7, and align the piston of the oil cylinder 6 with the second through hole 12 of the second flange 4.

[0046] S2. Connect the steel pipe pile 1 and the auxiliary pile 3 to form an integral component; specifically, align the first through hole 11 of the steel pipe pile 1 and the first through hole 11 of the auxiliary pile 3; adjust the oil cylinder 6 so that its piston passes through the second through hole 12 of the second flange 4, and make the bottom end of the piston of the oil cylinder 6 flush with the bottom of the first flange 2; place the connecting block 8 in a fit manner on the bottom of the first flange 2, adjust the drive motor 5 so that the screw 7 rotates through the first through holes 11 of the second flange 4 and the first flange 2 and then is threadedly connected to 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 an adult to pass through, so as to facilitate the installation and connection of the steel pipe pile 1 and the auxiliary pile 3.

[0047] S3. Point the steel pipe pile 1 downward and sink the entire component into the water surface until the top of the auxiliary pile 3 reaches the preset elevation, and then stop piling. During actual operation, the elevation of the top of the steel pipe pile 1 is difficult to control in water, while the elevation and length of the top of the auxiliary pile 3 are easy to control. Therefore, the elevation of the top of the steel pipe pile 1 is controlled by controlling the elevation of the auxiliary pile 3. After the two are separated, the elevation of the top of the steel pipe pile 1 in the water is fixed, and the control of the elevation of the top of the underwater steel pipe pile 1 is also optimized. The preset elevation is set by the actual construction conditions. Preferably, the preset elevation of the steel pipe pile 1 is 20 meters or less underwater.

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

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

Claims

1. An underwater steel pipe pile sinking connection device, comprising a steel pipe pile (1) driven underwater, characterized in that: The invention also includes an auxiliary pile (3) arranged above the steel pipe pile (1) and detachably connected thereto, a first flange (2) fixedly welded to the top pipe opening of the steel pipe pile (1), a second flange (4) fixedly welded to the bottom pipe opening of the auxiliary pile (3), a screw (7) passing through a first through hole (11) provided on the first flange (2) and the second flange (4), a connecting block (8) fitted at the bottom end of the first flange (2) and cooperating with the screw (7), and a driving motor (5) connected to the top of the screw (7) for rotating the screw (7) to threadably connect or separate the screw with the connecting block (8).

2. The underwater steel pipe pile sinking connection device according to claim 1, characterized in that: The second flange (4) is provided with an oil cylinder (6) for assisting in separating the connecting block (8) and the screw rod (7), and the second flange (4) is provided with a second through hole (12) for the piston of the oil cylinder (6) to pass through. In an initial state, the piston passes through the second through hole (12) and fits against the top end of the connecting block (8).

3. The underwater steel pipe pile sinking connection device according to claim 2, characterized in that: The oil cylinder (6) is symmetrically arranged on both sides of the screw (7).

4. The underwater steel pipe pile sinking connection device according to claim 1, characterized in that: A plurality of pull rods (9) distributed in an annular array and used for pulling out the auxiliary piles (3) are fixedly mounted on the inner wall of the auxiliary pile (3).

5. The underwater steel pipe pile (1) sinking and connecting device according to claim 1, characterized in that: The inner wall of the first flange (2) is integrally formed with a cross having a reinforcement structure.

6. The underwater steel pipe pile sinking connection device according to claim 1, characterized in that: A support ring frame (10) is fixedly welded to the inner wall of the auxiliary pile (3), and the drive motor (5) is mounted on the support ring frame (10).

7. The underwater steel pipe pile sinking connection device according to claim 1, characterized in that: The screw rods (7), drive motors (5) and connection blocks (8) are of the same number and are all provided in plurality, and the plurality of screw rods (7), drive motors (5) and connection blocks (8) are respectively distributed in a circular array around the center of the auxiliary pile (3).

8. A construction method for the underwater steel pipe pile sinking connection device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Prepare the assembled steel pipe piles (1) and auxiliary piles (3); S2 connects the steel pipe pile (1) and the auxiliary pile (3) to form an integral member; S3. The steel pipe pile (1) is downward and the entire component is sunk into the water until the top of the auxiliary pile (3) reaches the preset elevation and the piling is stopped; S4. Separate the auxiliary pile (3) and the steel pipe pile (1), adjust the drive motor (5) so that it drives the screw (7) to rotate, so that the screw (7) is separated from the connecting block (8), and the connecting block (8) is detached due to gravity; when the screw (7) or the drive motor (5) cannot operate normally, adjust the oil cylinder (6) so that its piston extends downward, and the piston pushes the connecting block (8) to move downward until the connecting block (8) is detached from the screw (7) and falls off; S5. Pull out the auxiliary pile (3) by pulling the auxiliary pile (3) upwards through the pulling rod (9).

9. The construction method of the underwater steel pipe pile sinking connection device according to claim 8, characterized in that: The preparatory assembly of the steel pipe pile (1) in step S1 includes: welding the first flange (2) to the pipe opening at the top of the steel pipe pile (1); The preparation for assembling the auxiliary pile (3) in step S1 includes the following steps: The supporting ring frame (10) and the pulling rod (9) are fixedly welded to the inner wall of the auxiliary pile (3); Welding the second flange (4) to the pipe opening at the bottom of the auxiliary pile (3), and placing the auxiliary pile (3) on top of the steel pipe pile (1); The top of the screw rod (7) is fixedly connected to the output end of the driving motor (5), and the driving motor (5) is installed on the supporting 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 mounted 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 construction method of the underwater steel pipe pile sinking connection device according to claim 8, characterized in that: The connecting of the steel pipe pile (1) and the auxiliary pile (3) in step S2 comprises the following steps: Aligning the first through hole (11) of the steel pipe pile (1) and the first through hole (11) of the auxiliary pile (3); Regulating the oil cylinder (6) so that its piston passes through the second through hole (12) of the second flange (4), and so that 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 snugly on the bottom of the first flange (2), and the driving motor (5) is adjusted to rotate the screw (7) through the second flange (4) and the first through hole (11) of the first flange (2) and then threadedly connected to the connecting block (8).

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