Deep water lock hasp steel pipe pile cofferdam structure and construction method

Abstract

The application belongs to the technical field of lock steel pipe pile, in particular to a deep water lock steel pipe pile cofferdam structure and construction method, which comprises a support plate, a support plate and a steel pipe pile, and further comprises a guide device, an adjusting device and a supporting device installed outside the support plate. The deep water lock steel pipe pile cofferdam structure and construction method can fix the steel pipe pile by setting the supporting device. The vertical groove of the guide groove can prevent the fixed block from deflecting during the insertion of the steel pipe pile. The fixed block and the support rod are fixed and installed by bolts, which is convenient for disassembly. When the moving rod moves, the moving block moves, thereby adjusting the distance between the moving block and the fixed block. The staff can rotate the rotating pipe to move on the fixed arc pipe connected by threads. Since the inner wall of the rotating pipe is in contact with the arc plate of the fixed arc pipe, the movement of the rotating pipe extrudes the arc plate, causing it to deflect and fix the moving rod.

Description

Technical Field

[0001] The present invention relates to the technical field of locking steel pipe piles, and in particular to a cofferdam structure for deep-water locking steel pipe piles and a construction method. Background Art

[0002] During the process of road construction, more and more lines need to cross large rivers and reservoirs. Due to the limitations of navigation and flooding, the bridge piers need to be buried in the riverbed and embedded in the rock layer. During the pier construction, a deep-water foundation pit cofferdam needs to be built. At present, the domestic deep-water foundation pit cofferdams mainly include steel sheet pile cofferdams, locked steel pipe pile cofferdams, double-wall steel cofferdams, steel box cofferdams, etc. Steel pipe pile cofferdams have the advantages of high overall rigidity, high material utilization rate, and good economic benefits, so they are widely used.

[0003] In the existing locking steel pipe pile cofferdam structure, the installation process of the support plate is complicated and time-consuming, and it is impossible to ensure that the support plate is correctly in place, resulting in the connection being not tight enough. At the same time, the fixing angle of the support plate is not suitable for certain construction scenarios, and the material needs to be cut or modified. More maintenance and reinforcement are required during long-term use, which increases maintenance costs. In addition, due to the existence of manufacturing tolerances, the fit between the plug and the groove on the steel pipe pile is not completely accurate, and a good connection cannot be guaranteed. Summary of the Invention

[0004] Based on the technical problems in the existing locking steel pipe pile cofferdam structure, the installation process of the support plate is complicated and time-consuming. At the same time, the fixing angle of the support plate is not suitable for certain construction scenarios and requires cutting or modification of materials. In addition, due to the existence of manufacturing tolerances, the plugs and grooves on the steel pipe piles cannot ensure good docking. The present invention proposes a deep-water locking steel pipe pile cofferdam structure and construction method.

[0005] The present invention provides a deep-water lock steel pipe pile cofferdam structure, which includes a support plate, a supporting plate and steel pipe piles, and also includes a guide device, an adjustment device and a supporting device installed outside the support plate.

[0006] A guide device is located on the outer surface of the support plate and guides the insertion between the support plate and the supporting plate. The guide device includes a guide block, and the groove of the guide block guides the insertion of the support plate.

[0007] An adjusting device is located on the outer surface of the support plate and adjusts the angle between the support plate and the support plate. The adjusting device includes a rotating gear, and the rotation of the rotating gear adjusts the angle between the support plate and the support plate.

[0008] A supporting device is located on the outer surface of the support plate and fixes the steel pipe piles. The supporting device includes a moving block, and the movement of the moving block supports the steel pipe piles.

[0009] Preferably, the guide device further comprises an S-shaped plug-in block, wherein the S-shaped plug-in block is fixedly mounted on the outer surface of the support plate, and the outer surface of the support plate is rotatably connected to the inner wall of the groove of the support plate.

[0010] Through the above technical solution, the S-shaped plug is fixed to the support plate, and the support plate is rotatably connected to the support plate. While fixing it, the rotation is not affected, so that the angle between the support plate and the support plate can be adjusted.

[0011] Preferably, the guide block is fixedly mounted on the outer surface of the support plate, a guide groove is provided on the outer surface of the guide block, a guide groove is provided on the outer surface of the support plate and the outer surface of the support plate, and an inverted triangular plug is fixedly mounted on the lower surface of the support plate and the lower surface of the support plate.

[0012] Through the above technical solution, the guide block is fixedly installed on the support plate, and the cross-sectional area of ​​the guide groove on the guide block decreases from top to bottom until it is consistent with the size of the S-shaped groove on the support plate. The upper part of the guide block can easily accommodate the S-shaped plug-in block, and the cross-sectional area of ​​the guide groove decreases, providing a precise path so that the S-shaped plug-in block can be smoothly and accurately inserted into the S-shaped groove of the support plate. The guide grooves opened on the outside of the support plate are used to guide the moving position of the fixed block. The inverted triangular plug-in block fixedly installed on the support plate and the support plate can reduce the resistance during insertion due to its shape.

[0013] Preferably, the adjustment device further comprises a driving gear, the driving gear is fixedly mounted on the inner wall of the groove of the support plate, the rotating gear is fixedly mounted on the outer surface of the support plate, and the rotating gear is meshed with the driving gear.

[0014] Through the above technical solution, when the staff rotates the support plate, the fixed rotating gear is driven to rotate. Since the rotating gear is engaged with the driving gear, the support plate fixedly installed with the driving gear rotates synchronously, thereby reducing the burden on the staff.

[0015] Preferably, an arc-shaped groove is opened on the outer surface of the support plate, and a roller is rotatably connected to the inner wall of the groove of the support plate. The roller is in rolling contact with the inner wall of the arc-shaped groove, and the upper surface of the support plate and the upper surface of the support plate are fixedly installed by bolts.

[0016] Through the above technical solution, the arc-shaped groove on the support plate is a quarter of a circle, which limits the rotation angle of the support plate so that it can only rotate 90 degrees. The support plate is connected to the roller through rotation, which fixes it without affecting its rotation. The roller and the arc-shaped groove are in rolling contact to reduce friction. The support plate and the support plate are fixed and installed by bolts so that the relative angle between the two is in a stable state.

[0017] Preferably, the supporting device further comprises a fixing block, the outer surface of the fixing block is slidably plugged into the inner wall of the groove of the guide groove, and the outer surface of the fixing block is fixed with a support rod by bolts.

[0018] Through the above technical solution, the fixed block is slidably plugged into the guide groove, and insertion holes larger than the fixed block are provided at both ends of the guide groove, which facilitates the insertion and removal of the fixed block. When the fixed block moves into the vertical groove of the guide groove, it can prevent the fixed block from deflecting during the insertion of the steel pipe pile. The fixed block and the support rod are fixed and installed by bolts, which fixes the support rod and is convenient for disassembly. At the same time, it is convenient for the storage of the fixed block and the moving block fixed at one end of the moving rod slidably connected to the support rod.

[0019] Preferably, a fixed arc tube with an arc plate is fixedly installed on the outer surface of the support rod, and a moving rod is slidably connected to the inner wall of the support rod, and one end of the moving rod is fixedly installed on the outer surface of the moving block.

[0020] Through the above technical solution, the support rod is fixedly installed with the fixed arc tube with the arc plate, and the fixed arc tube is fixedly installed with the moving block and the moving rod. When the moving rod moves on the inner wall of the slidingly connected support rod, the moving block is driven to move, thereby adjusting the distance between the moving block and the fixed block.

[0021] Preferably, the outer surface of the fixed arc tube is threadedly connected to a rotating tube, the inner wall of the rotating tube contacts the outer surface of the arc plate of the fixed arc tube, and the outer surface of the steel pipe pile is fixedly installed with an arrowhead plug and a fixed plate with a slot.

[0022] Through the above technical solution, the fixed arc tube is connected to the rotating tube through threads, and the staff can move the rotating tube on the fixed arc tube by rotating it. Since the inner wall of the rotating tube contacts the arc plate of the fixed arc tube, the movement of the rotating tube squeezes the arc plate, causing it to deflect, thereby fixing the moving rod, and fixing it through the steel pipe pile and the arrow plug block. At the same time, the cross-sectional area of ​​the arrow plug block and the groove opened on the fixed plate are equal, ensuring that the arrow plug block can be accurately inserted into the slot. At the same time, due to the triangular design of the top of the arrow plug block, a certain gripping force will be generated on the fixed plate to prevent it from falling off.

[0023] Preferably, the outer surface of the support plate and the outer surface of the support plate are both fixedly mounted with support blocks, and the outer surface of the arrowhead insert block and the outer surface of the fixing plate are both fixedly mounted to the outer surface of the support block by bolts.

[0024] Through the above technical solution, the support plate is fixed to the support plate and the support block, and the arrowhead block is fixed to the support block by bolts after being inserted into the fixing plate. The steel pipe pile is fixed while being fixed between the support block and the support plate or the support plate, thereby enhancing the stability of the entire cofferdam structure.

[0025] The present invention proposes a construction method for a deep-water lock steel pipe pile cofferdam structure, comprising the following steps:

[0026] S1: When the staff is required to splice the guide device, the guide groove on the guide block fixedly mounted on the support plate is fixedly connected to the S-shaped groove on the support plate. Since the cross-sectional area of ​​the guide groove on the guide block decreases from top to bottom until it is the same size as the S-shaped groove on the support plate, the S-shaped plug fixedly mounted on the support plate can be guided when inserted into the S-shaped groove on the support plate;

[0027] S2: After the staff plugs the support plate and the supporting plate into the required size and forms a square to form a closed structure, the staff removes the bolts fixing the support plate and the supporting plate, rotates the support plate to the required position, and the roller connected to the support plate rolls in contact with the arc-shaped groove on the supporting plate. The rotating gear fixed on the support plate meshes with the driving gear fixed on the supporting plate, which can further reduce the resistance required for rotation. When the support plate and the supporting plate are in a vertical state, the removed bolts are used to fix the support plate and the supporting plate again;

[0028] S3: The staff uses a crane to transport the adjusted support plate and supporting plate to the required position of the cofferdam, and uses its own weight to push down the inverted triangle plugs fixed on the lower surface of the support plate and supporting plate. If the required insertion depth does not meet the requirements, pile driving equipment can be used to reach the required depth;

[0029] S4: When it is necessary to drive a steel pipe pile, the worker inserts the fixed block into the guide groove, moves it to the designated position, fixes the support rod and the fixed block with bolts, twists the rotating tube to release the fixed arc tube threaded with it from fixing the moving rod, moves the moving block fixed to the moving rod to a suitable distance, twists the rotating tube again to move it on the fixed arc tube, and its inner wall presses the arc plate on the fixed arc tube to fix it to the moving rod. The steel pipe pile is hoisted to the top by a crane and aligned with the center of the space formed by the fixed block and the moving block. It is then driven down by itself and then driven to the required depth by piling equipment.

[0030] S5: When the second or more piles need to be driven in, the fixed arc tube is released from the moving rod by twisting the rotating tube, the position of the moving block is adjusted, the fixed block is moved to the required position, and the position of the moving block is adjusted and the rotating tube is twisted again to fix the moving rod. The staff aligns the arrowhead insert of the steel pipe pile with the arrowhead groove on the fixing plate. After the insertion is completed, the arrowhead insert, the fixing plate and the support block are fixed by bolts to further improve stability.

[0031] The beneficial effects of the present invention are:

[0032] 1. By setting a guiding device, the plugging between the support plate and the supporting plate is guided, the support plate and the supporting plate are rotatably connected, the angle between the support plate and the supporting plate is adjusted, the guide block is fixedly installed on the supporting plate, and the cross-sectional area of ​​the groove on the guide block decreases from top to bottom until it is consistent with the size of the S-shaped groove on the supporting plate, providing a precise path so that the S-shaped plug can be smoothly and accurately inserted into the S-shaped groove of the supporting plate. The guide grooves opened on the outside of the support plate and the supporting plate are used to guide the moving position of the fixed block. The inverted triangular plug fixedly installed on the support plate and the supporting plate can reduce the resistance during insertion due to its shape, thereby solving the technical problem that the installation process of the support plate in the existing locking steel pipe pile cofferdam structure is complicated and time-consuming, and it is impossible to ensure that the support plate is correctly in place, resulting in the connection being not tight enough.

[0033] 2. By setting an adjustment device, the angle between the support plate and the supporting plate is adjusted. When the staff rotates the support plate, the fixed rotating gear is driven to rotate. Since the rotating gear is engaged with the driving gear, the support plate fixedly installed with the driving gear rotates synchronously, thereby reducing the burden on the staff. The arc-shaped groove on the support plate is a quarter of a circle, which limits the rotation angle of the support plate so that it can only rotate 90 degrees. The support plate is rotatably connected to the roller, and the roller is in rolling contact with the arc-shaped groove to reduce friction. The support plate and the supporting plate are fixed and installed by bolts so that the relative angle between the two is in a stable state. This solves the technical problem that in the existing locking steel pipe pile cofferdam structure, the fixed angle of the support plate is not suitable for certain construction scenarios, and the material needs to be cut or modified. More maintenance and reinforcement are required during long-term use, which increases maintenance costs.

[0034] 3. The steel pipe pile is fixed by setting a supporting device. When the fixed block moves into the vertical groove of the guide groove, it can prevent the fixed block from deflecting during the insertion of the steel pipe pile. The fixed block and the support rod are fixed and installed by bolts, which is easy to disassemble. When the moving rod moves on the inner wall of the sliding connected support rod, the fixed moving block moves, thereby adjusting the distance between the moving block and the fixed block. The staff can rotate the rotating tube to move it on the threaded fixed arc tube. Since the inner wall of the rotating tube contacts the arc plate of the fixed arc tube, the movement of the rotating tube squeezes the arc plate. The steel pipe piles are fixed to the support plate or the support plate, thereby solving the technical problem that the matching between the plug and the groove on the steel pipe pile is not completely accurate and cannot ensure good docking due to the existence of manufacturing tolerances in the existing locking steel pipe pile cofferdam structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0036] Figure 2 A three-dimensional diagram of a support plate structure for a deep-water lock steel pipe pile cofferdam structure proposed by the present invention;

[0037] Figure 3 A perspective view of a support plate structure for a deep-water lock steel pipe pile cofferdam structure proposed by the present invention;

[0038] Figure 4 A three-dimensional diagram of an inverted triangle plug-in structure for a deep-water lock steel pipe pile cofferdam structure proposed by the present invention;

[0039] Figure 5 A three-dimensional diagram of a guide groove structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0040] Figure 6 A perspective view of a rotating gear structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0041] Figure 7 A three-dimensional diagram of an arc-shaped groove structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0042] Figure 8 A perspective view of a roller structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0043] Figure 9 A three-dimensional diagram of an arrowhead plug structure for a deep-water lock steel pipe pile cofferdam structure proposed by the present invention;

[0044] Figure 10 A perspective view of a mobile rod structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0045] Figure 11 This is a three-dimensional diagram of a fixed arc tube structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention.

[0046] In the figure: 1. support plate; 11. support plate; 12. steel pipe pile; 2. S-shaped plug; 3. guide block; 31. guide groove; 32. guide groove; 33. inverted triangle plug; 4. drive gear; 41. rotating gear; 5. arc groove; 51. roller; 6. fixed block; 61. support rod; 7. fixed arc tube; 71. moving rod; 72. moving block; 8. rotating tube; 81. arrow plug; 82. fixed plate; 9. support block. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figures 1-11 A deep-water lock steel pipe pile cofferdam structure includes a support plate 1, a support plate 11 and a steel pipe pile 12, and also includes a guide device, an adjustment device and a support device installed outside the support plate 1.

[0049] like Figure 2-5 As shown, in order to guide the insertion of the support plate 1 and the support plate 11, a guiding device is provided. The guiding device is located on the outer surface of the support plate 1 and guides the insertion between the support plate 1 and the support plate 11. The guiding device includes a guiding block 3, and the groove of the guiding block 3 guides the insertion of the support plate 1.

[0050] Specifically, in order to fix the support plate 1 and the support plate 11 without affecting the rotation, the guide device also includes an S-shaped plug block 2, which is fixedly installed on the outer surface of the support plate 1, and the outer surface of the support plate 1 is rotatably connected to the inner wall of the groove of the support plate 11. The S-shaped plug block 2 is fixed to the support plate 1 to fix it, and the support plate 1 is rotatably connected to the support plate 11, and is fixed without affecting the rotation, so that the angle between the support plate 1 and the support plate 11 can be adjusted.

[0051] Specifically, in order to ensure that the S-shaped plug block 2 can be smoothly and accurately inserted into the S-shaped groove of the support plate 11, the guide block 3 is fixedly mounted on the outer surface of the support plate 11, and a guide groove 31 is provided on the outer surface of the guide block 3. The outer surface of the support plate 1 and the outer surface of the support plate 11 are both provided with a guide groove 32. The lower surface of the support plate 1 and the lower surface of the support plate 11 are both fixedly mounted with an inverted triangular plug block 33. The guide block 3 is fixedly mounted on the support plate 11 and fixed to it. The cross-sectional area of ​​the guide groove 31 on the guide block 3 is from top to bottom. The size of the guide block 3 gradually decreases until it is consistent with the size of the S-shaped groove on the support plate 11. The upper part of the guide block 3 can easily accommodate the S-shaped plug 2. The cross-sectional area of ​​the guide groove 31 decreases, providing a precise path so that the S-shaped plug 2 can be smoothly and accurately inserted into the S-shaped groove of the support plate 11. The guide groove 32 opened on the outside of the support plate 1 and the support plate 11 is used to guide the moving position of the fixed block 6. The inverted triangular plug 33 fixedly installed on the support plate 1 and the support plate 11 can reduce the resistance during insertion due to its shape.

[0052] like Figure 6-8 As shown, in order to adjust the angle between the support plate 1 and the support plate 11, an adjusting device is provided. The adjusting device is located on the outer surface of the support plate 1 and adjusts the angle between the support plate 1 and the support plate 11. The adjusting device includes a rotating gear 41. The rotation of the rotating gear 41 adjusts the angle between the support plate 1 and the support plate 11.

[0053] Specifically, in order to reduce the burden on the staff, the adjustment device also includes a driving gear 4, which is fixedly mounted on the inner wall of the groove of the support plate 11, and a rotating gear 41 is fixedly mounted on the outer surface of the support plate 1. The rotating gear 41 is engaged with the driving gear 4. When the staff rotates the support plate 1, the fixed rotating gear 41 is driven to rotate. Since the rotating gear 41 is engaged with the driving gear 4, the support plate 11 fixedly mounted with the driving gear 4 rotates synchronously, thereby reducing the burden on the staff.

[0054] Specifically, in order to make the relative angle between the support plate 1 and the support plate 11 in a stable state, an arc-shaped groove 5 is opened on the outer surface of the support plate 11, and the inner wall of the groove of the support plate 1 is rotatably connected with a roller 51, and the roller 51 is in rolling contact with the inner wall of the arc-shaped groove 5. The upper surface of the support plate 1 and the upper surface of the support plate 11 are fixedly installed by bolts. The arc-shaped groove 5 on the support plate 11 is a quarter of a circle, which limits the rotation angle of the support plate 1 so that it can only rotate 90 degrees. The support plate 1 is rotatably connected to the roller 51, which fixes it without affecting its rotation. The roller 51 is in rolling contact with the arc-shaped groove 5 to reduce friction. The support plate 1 and the support plate 11 are fixedly installed by bolts so that the relative angle between the two is in a stable state.

[0055] like Figure 9-11As shown, in order to fix the steel pipe pile 12, a supporting device is provided. The supporting device is located on the outer surface of the support plate 1 and fixes the steel pipe pile 12. The supporting device includes a moving block 72. The movement of the moving block 72 supports the steel pipe pile 12.

[0056] Specifically, in order to facilitate the storage of the fixed block 6 and the movable block 72, the supporting device also includes a fixed block 6, the outer surface of the fixed block 6 is slidably inserted into the inner wall of the groove of the guide groove 32, and the outer surface of the fixed block 6 is fixedly installed with a support rod 61 by bolts. The fixed block 6 is slidably inserted into the guide groove 32, and both ends of the guide groove 32 are provided with insertion holes larger than the fixed block 6, which facilitates the insertion and removal of the fixed block 6. When the fixed block 6 moves into the vertical groove of the guide groove 32, the fixed block 6 can prevent the fixed block 6 from deflecting during the insertion process of the steel pipe pile 12. The fixed block 6 and the support rod 61 are fixedly installed by bolts, which fixes the support rod 61 while facilitating disassembly, and at the same time facilitates the storage of the fixed block 6 and the movable block 72 fixedly installed at one end of the movable rod 71 slidably connected to the support rod 61.

[0057] Specifically, in order to adjust the distance between the moving block 72 and the fixed block 6, a fixed arc tube 7 with an arc plate is fixedly installed on the outer surface of the support rod 61, and a moving rod 71 is slidably connected to the inner wall of the support rod 61. One end of the moving rod 71 is fixedly installed on the outer surface of the moving block 72, and the support rod 61 is fixedly installed with the fixed arc tube 7 with an arc plate to fix it. The moving block 72 is fixedly installed with the moving rod 71. When the inner wall of the slidingly connected support rod 61 moves, the moving rod 71 drives the moving block 72 to move, thereby adjusting the distance between the moving block 72 and the fixed block 6.

[0058] Specifically, in order to ensure that the arrowhead plug 81 can be accurately inserted into the slot, the outer surface of the fixed arc tube 7 is threadedly connected with the rotating tube 8, and the inner wall of the rotating tube 8 contacts the outer surface of the arc plate of the fixed arc tube 7. The outer surface of the steel pipe pile 12 is fixedly installed with the arrowhead plug 81 and the fixed plate 82 with a slot. Through the threaded connection between the fixed arc tube 7 and the rotating tube 8, the staff can move it on the fixed arc tube 7 by rotating the rotating tube 8. Since the inner wall of the rotating tube 8 contacts the arc plate of the fixed arc tube 7, the movement of the rotating tube 8 squeezes the arc plate and deflects it, thereby fixing the moving rod 71. It is fixed and installed with the steel pipe pile 12 and the arrowhead plug 81. At the same time, the cross-sectional area of ​​the grooves opened on the arrowhead plug 81 and the fixed plate 82 is equal, ensuring that the arrowhead plug 81 can be accurately inserted into the slot. At the same time, due to the triangular design at the top of the arrowhead plug 81, a certain gripping force will be generated on the fixed plate 82 to prevent it from falling off.

[0059] Specifically, in order to enhance the stability of the entire cofferdam structure, the outer surface of the support plate 1 and the outer surface of the support plate 11 are fixedly installed with support blocks 9, the outer surface of the arrow block 81 and the outer surface of the fixing plate 82 are fixedly installed with the outer surface of the support block 9 by bolts, and the support plate 1 is fixed to the support plate 11 and the support block 9 to fix them. At the same time, after the arrow block 81 is inserted into the fixing plate 82, it is fixed to the support block 9 by bolts, and the steel pipe piles 12 are fixed while being fixed between the support block 9 and the support plate 1 or the support plate 11, thereby enhancing the stability of the entire cofferdam structure.

[0060] like Figures 1-11 As shown, the present invention proposes a construction method for a deep-water lock steel pipe pile cofferdam structure, comprising the following steps:

[0061] S1: When the staff needs to splice the guide device, the guide groove 31 on the guide block 3 fixedly mounted on the support plate 11 is fixedly connected to the S-shaped groove on the support plate 11. Since the cross-sectional area of ​​the guide groove 31 on the guide block 3 decreases from top to bottom until it is the same size as the S-shaped groove on the support plate 11, it can guide the S-shaped plug block 2 fixedly mounted on the support plate 1 when it is inserted into the S-shaped groove on the support plate 11;

[0062] S2: After the staff plugs the support plate 1 and the support plate 11 into each other according to the required size and forms a square to form a closed structure, the staff removes the bolts fixing the support plate 1 and the support plate 11, and rotates the support plate 1 to the required position. The roller 51 connected to the support plate 1 rolls in contact with the arc-shaped groove 5 provided on the support plate 11, and the rotating gear 41 fixedly mounted on the support plate 1 is engaged with the driving gear 4 fixedly mounted on the support plate 11, which can further reduce the resistance required for rotation. When the support plate 1 and the support plate 11 are in a vertical state, the removed bolts are used to fix the support plate 1 and the support plate 11 again;

[0063] S3: The staff uses a crane to transport the adjusted support plate 1 and support plate 11 to the required position of the cofferdam, and uses its own weight to insert the inverted triangular insert blocks 33 fixed on the lower surfaces of the support plate 1 and support plate 11. If the required insertion depth does not meet the requirements, a piling device can be used to make it reach the required depth;

[0064] S4: When it is necessary to drive the steel pipe pile 12, the staff inserts the fixed block 6 into the guide groove 32, moves it to the designated position, fixes the support rod 61 to the fixed block 6 with bolts, twists the rotating tube 8, releases the fixed arc tube 7 threadedly connected to the movable rod 71, moves the movable block 72 fixedly mounted on the movable rod 71 to a suitable distance, twists the rotating tube 8 again to move it on the fixed arc tube 7, and its inner wall squeezes the arc plate on the fixed arc tube 7 to fix it to the movable rod 71, and hoists the steel pipe pile 12 to the top by a crane, aligns it with the center of the space formed by the fixed block 6 and the movable block 72, and uses itself to insert it downward and then uses the piling equipment to make it reach the required depth;

[0065] S5: When it is necessary to drive in the second or more piles, the fixing of the fixed arc tube 7 to the moving rod 71 is released by twisting the rotating tube 8, the position of the moving block 72 is adjusted, the fixed block 6 is moved to the required position, and the position of the moving block 72 is adjusted and the rotating tube 8 is twisted again to fix the moving rod 71. The staff aligns the arrowhead plug 81 of the steel pipe pile 12 with the arrowhead groove on the fixing plate 82. After the insertion is completed, the arrowhead plug 81 and the fixing plate 82 are fixed to the support block 9 by bolts to further improve stability.

[0066] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A deepwater lock steel pipe pile cofferdam structure, comprising a support plate (1), a support plate (11) and steel pipe piles (12), characterized in that: It also includes a guide device, an adjustment device and a support device installed outside the support plate (1); A guide device, the guide device is located on the outer surface of the support plate (1) and guides the insertion between the support plate (1) and the support plate (11), the guide device comprises a guide block (3), and the groove of the guide block (3) guides the insertion of the support plate (1); The outer surface of the support plate (1) and the outer surface of the support plate (11) are both provided with guide grooves (32); an adjusting device, the adjusting device being located on the outer surface of the support plate (1) and adjusting the angle between the support plate (1) and the support plate (11), the adjusting device comprising a rotating gear (41), the rotation of the rotating gear (41) adjusting the angle between the support plate (1) and the support plate (11); A supporting device, the supporting device is located on the outer surface of the support plate (1) and fixes the steel pipe pile (12), the supporting device includes a moving block (72), and the movement of the moving block (72) supports the steel pipe pile (12); The supporting device further comprises a fixing block (6), the outer surface of the fixing block (6) being slidably plugged into the inner wall of the groove of the guide groove (32), and a support rod (61) being fixedly mounted on the outer surface of the fixing block (6) by means of bolts; A fixed arc tube (7) with an arc plate is fixedly mounted on the outer surface of the support rod (61); a moving rod (71) is slidably connected to the inner wall of the support rod (61); one end of the moving rod (71) is fixedly mounted on the outer surface of the moving block (72); The outer surface of the fixed arc tube (7) is threadedly connected to a rotating tube (8), and the inner wall of the rotating tube (8) is in contact with the outer surface of the arc plate of the fixed arc tube (7).

2. A deepwater lock steel pipe pile cofferdam structure according to claim 1, characterized in that: The guide device further comprises an S-shaped plug-in block (2), wherein the S-shaped plug-in block (2) is fixedly mounted on the outer surface of the support plate (1), and the outer surface of the support plate (1) is rotatably connected to the inner wall of the groove of the support plate (11).

3. A deepwater lock steel pipe pile cofferdam structure according to claim 2, characterized in that: The guide block (3) is fixedly mounted on the outer surface of the support plate (11), and a guide groove (31) is provided on the outer surface of the guide block (3). Inverted triangle insert blocks (33) are fixedly mounted on the lower surface of the support plate (1) and the lower surface of the support plate (11).

4. A deepwater lock steel pipe pile cofferdam structure according to claim 3, characterized in that: The adjusting device further comprises a driving gear (4), wherein the driving gear (4) is fixedly mounted on the inner wall of the groove of the support plate (11), and the rotating gear (41) is fixedly mounted on the outer surface of the support plate (1), and the rotating gear (41) is meshed with the driving gear (4).

5. The deepwater locking steel pipe pile cofferdam structure according to claim 4, characterized in that: An arc-shaped groove (5) is formed on the outer surface of the support plate (11), and a roller (51) is rotatably connected to the inner wall of the groove of the support plate (1). The roller (51) is in rolling contact with the inner wall of the arc-shaped groove (5). The upper surface of the support plate (1) and the upper surface of the support plate (11) are fixedly mounted by bolts.

6. A deepwater lock steel pipe pile cofferdam structure according to claim 5, characterized in that: An arrowhead insert (81) and a fixing plate (82) with a slot are fixedly mounted on the outer surface of the steel pipe pile (12).

7. The deepwater locking steel pipe pile cofferdam structure according to claim 6, characterized in that: The outer surface of the support plate (1) and the outer surface of the support plate (11) are both fixedly mounted with a support block (9), and the outer surface of the arrowhead insert block (81) and the outer surface of the fixing plate (82) are both fixedly mounted to the outer surface of the support block (9) via bolts.

8. The construction method for a deepwater lock steel pipe pile cofferdam structure according to claim 7, characterized in that: S1: When the staff is required to splice the guide device, the guide groove (31) on the guide block (3) fixedly mounted on the support plate (11) is fixedly connected to the S-shaped groove on the support plate (11). Since the cross-sectional area of ​​the guide groove (31) on the guide block (3) decreases from top to bottom until it is the same size as the S-shaped groove on the support plate (11), the S-shaped plug (2) fixedly mounted on the support plate (1) can be guided when inserted into the S-shaped groove on the support plate (11); S2: After the staff inserts the support plate (1) and the support plate (11) according to the required size, when they are enclosed into a square to form a closed structure, the bolts fixing the support plate (1) and the support plate (11) are removed, and the support plate (1) is rotated to the required position. The roller (51) connected to the support plate (1) rolls in contact with the arc groove (5) opened on the support plate (11), and the rotating gear (41) fixedly installed on the support plate (1) is engaged with the driving gear (4) fixedly installed on the support plate (11), which can further reduce the resistance required for rotation. When the support plate (1) and the support plate (11) are in a vertical state, the removed bolts are used to fix the support plate (1) and the support plate (11) again; S3: The staff transports the adjusted support plate (1) and the support plate (11) to the required position of the cofferdam by means of a crane, and uses their own weight to insert the inverted triangular plug (33) fixedly installed on the lower surface of the support plate (1) and the support plate (11). When the required insertion depth does not meet the requirements, a pile driving device is used to make it reach the required depth; S4: When it is necessary to drive the steel pipe pile (12), the staff inserts the fixed block (6) into the guide groove (32), moves it to the designated position, fixes the support rod (61) and the fixed block (6) by bolts, twists the rotating tube (8), releases the fixed arc tube (7) threadedly connected to the fixed arc tube (7) on the mobile rod (71), moves the mobile block (72) fixedly mounted on the mobile rod (71) to a suitable distance, twists the rotating tube (8) again, moves it on the fixed arc tube (7), and squeezes the inner wall of the rotating tube (8) against the arc plate on the fixed arc tube (7) to fix it to the mobile rod (71), and hoists the steel pipe pile (12) to the top by a crane, aligns it with the center of the space formed by the fixed block (6) and the mobile block (72), and uses itself to insert it downward and then uses the piling equipment to make it reach the required depth; S5: When the second or more piles need to be driven in, the fixing of the fixed arc tube (7) to the moving rod (71) is released by twisting the rotating tube (8), the position of the moving block (72) is adjusted, the fixed block (6) is moved to the desired position, the position of the moving block (72) is adjusted, and the rotating tube (8) is twisted again to fix the moving rod (71). The staff aligns the arrowhead insert (81) of the steel pipe pile (12) with the arrowhead groove on the fixing plate (82). After the insertion is completed, the arrowhead insert (81) and the fixing plate (82) are fixed to the support block (9) by bolts to further improve stability.

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