Deepwater lock catch steel pipe pile cofferdam structure and construction method

Abstract

The invention belongs to the technical field of lock catch steel pipe piles, and particularly relates to a deepwater lock catch steel pipe pile cofferdam structure and a construction method, the deepwater lock catch steel pipe pile cofferdam structure comprises a supporting plate, a supporting plate and a steel pipe pile, and further comprises a guiding device, an adjusting device and a supporting device which are installed outside the supporting plate. By arranging the supporting device, the steel pipe pile is fixed, a vertical groove of a guide groove can prevent a fixed block from deflecting in the inserting process of the steel pipe pile, the fixed block and a supporting rod are fixedly installed through a bolt, dismounting is convenient, when a movable rod moves, a movable block is driven to move, and therefore the distance between the movable block and the fixed block is adjusted; a worker can rotate the rotating pipe to enable the rotating pipe to move on the fixed arc pipe which is in threaded connection with the rotating pipe, and due to the fact that the inner wall of the rotating pipe makes contact with the arc plate of the fixed arc pipe, the arc plate is extruded and deflected through movement of the rotating pipe, and the movable rod is fixed.

Description

Technical Field

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

[0002] With the rapid development of my country's transportation industry, the construction speed of expressways, high-speed railways, national and provincial roads has become the fastest in the world. In 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 pedestals need to be buried in the riverbed and embedded in the rock layer. Deep-water foundation pit cofferdams need to be built during the construction of the pedestals. 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 materials need to be cut or modified. More maintenance and reinforcement are required during long-term use, increasing 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 docking cannot be guaranteed. Summary of the invention

[0004] Based on the technical problems that in the existing locking steel pipe pile cofferdam structure, the installation process of the support plate is complicated and time-consuming, and the fixing angle of the support plate is not suitable for certain construction scenarios, and the material needs to be cut or modified. 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 deepwater locking steel pipe pile cofferdam structure and construction method.

[0005] The present invention provides a deep-water locking steel pipe pile cofferdam structure, which comprises a support plate, a supporting plate and steel pipe piles, and also comprises a guiding device, an adjusting 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 support plate. The guide device includes a guide block, and a groove of the guide block guides the insertion of the support plate.

[0007] The adjusting device is located on the outer surface of the support plate and is used to adjust 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 block, the S-shaped plug 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 fixedly installed with the support plate to fix it, and the support plate is rotatably connected to the support plate. While fixing it, it does not affect the rotation, 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, guide grooves are provided on the outer surfaces of the support plate and the support plate, and inverted triangle plug blocks are 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 and the support plate are fixedly installed and fixed, 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 provided on the outside of the support plate and 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 adjusting device further comprises a driving gear, the driving gear is fixedly mounted on the inner wall of the groove of the supporting plate, the rotating gear is fixedly mounted on the outer surface of the supporting 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 fixedly installed 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, and the roller is in rolling contact with the inner wall of the arc-shaped groove. 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 rotatably connected to the roller to fix 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 to keep the relative angle between the two 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 a support rod is fixedly mounted on the outer surface of the fixing block by bolts.

[0018] Through the above technical scheme, the fixed block is slidably plugged into the guide groove, and holes larger than the fixed block are provided at both ends of the guide groove to facilitate the insertion and removal of the fixed block. When the fixed block moves into the vertical groove of the guide groove, the fixed block can be prevented 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 facilitates disassembly. At the same time, it is convenient for the storage of the fixed block and the moving block fixedly installed 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 mounted on the outer surface of the support rod, a moving rod is slidably connected to the inner wall of the support rod, and one end of the moving rod is fixedly mounted to the outer surface of the moving block.

[0020] Through the above technical scheme, the fixed arc tube with the arc plate is fixedly installed by the support rod, and the fixed arc tube is fixedly installed by the moving block and the moving rod. When the moving rod moves the inner wall of the support rod in the sliding connection, 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 with 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 respectively fixedly mounted with an arrowhead plug and a fixing plate with a slot.

[0022] Through the above technical scheme, the fixed arc tube is threadedly connected with the rotating tube, 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 to deflect it, thereby fixing the moving rod, and fixing it through the steel pipe pile and the arrowhead plug block. At the same time, the cross-sectional area of ​​the arrowhead plug block and the groove opened on the fixed plate are equal, ensuring that the arrowhead plug block can be accurately inserted into the slot. At the same time, due to the triangular design on the top of the arrowhead plug block, a certain gripping force will be generated on the fixed plate to prevent it from falling off.

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

[0024] Through the above technical scheme, 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 through 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 locking 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 installed on the support plate is fixedly connected with 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 consistent with the size of the S-shaped groove on the support plate, the S-shaped plug block fixedly installed 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 according to the required size, when they are surrounded into a square to form a closed structure, the bolts fixing the support plate and the supporting plate are removed, and the support plate at the required position is rotated. The roller connected to the support plate rolls with the arc groove provided on the supporting plate, and the rotating gear fixedly installed on the support plate is meshed with the driving gear fixedly installed 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 transports the adjusted support plate and the supporting plate to the required position of the cofferdam by means of a crane, and uses their own weight to insert the inverted triangular plugs fixed on the lower surface of the support plate and the supporting plate. If the required insertion depth does not meet the requirements, a piling device can be used to make it reach the required depth;

[0029] S4: When it is necessary to drive the 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 fixing of the fixed arc tube threaded with it on the moving rod, moves the moving block fixedly installed on 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, and hoists the steel pipe pile to the top by a crane, aligns it with the center of the space formed by the fixed block and the moving block, and uses itself to insert it downward and then uses the piling equipment to make it reach the required depth;

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

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

[0032] 1. By setting a guiding device, the plug-in 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 and the supporting plate are fixedly installed, 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 block can be smoothly and accurately inserted into the S-shaped groove of the supporting plate. The guide grooves provided outside the support plate and the supporting plate are used to guide the moving position of the fixed block. The inverted triangle plug block fixedly installed on the support 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 supporting plate fixedly installed with the driving gear rotates synchronously, thereby reducing the burden on the staff. The arc-shaped groove on the supporting 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 to keep the relative angle between the two in a stable state, which solves the technical problems in the existing locking steel pipe pile cofferdam structure that 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 the maintenance cost.

[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, the fixed block can be prevented 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 on the inner wall of the support rod connected by the sliding connection, 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 arrowhead block fixed on the steel pipe pile has the same cross-sectional area as the groove formed on the fixing plate on which the steel pipe pile is fixed, ensuring that the block can be accurately inserted into the slot. At the same time, after the arrowhead block is inserted into the fixing plate, it is fixed to the support block by bolts, thereby fixing the steel pipe piles to each other and fixing them through the support block and the support plate or between the support plates, solving the technical problem that in the existing locking steel pipe pile cofferdam structure, the matching between the block and the groove on the steel pipe pile is not completely accurate due to the existence of manufacturing tolerances, and a good docking cannot be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 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 three-dimensional diagram of a support plate structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

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

[0043] Fig. 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] Fig.10 A three-dimensional diagram of a moving rod structure for a deep-water locking steel pipe pile cofferdam structure proposed by the present invention;

[0045] Fig.11 A stereoscopic 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 described clearly and completely 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 Figure 1-Figure 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 fixedly installed with the support plate 1 to fix it, and the support plate 1 is rotatably connected to the support plate 11, and the rotation is not affected while it is fixed, so as to adjust the angle between the support plate 1 and the support plate 11.

[0051] Specifically, in order to smoothly and accurately insert the S-shaped plug block 2 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 the guide block 3. The cross-sectional area of ​​the guide groove 31 on the guide block 3 is from top to bottom. The guide groove 31 decreases gradually until it is the same size as the S-shaped groove on the support plate 11. The upper part of the guide block 3 can easily accommodate the S-shaped plug block 2. The cross-sectional area of ​​the guide groove 31 decreases gradually, providing a precise path so 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 groove 32 opened outside the support plate 1 and the support plate 11 is used to guide the moving position of the fixed block 6. The inverted triangle plug block 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, and the rotating gear 41 is meshed with the driving gear 4. When the staff rotates the support plate 1, the fixedly mounted rotating gear 41 is driven to rotate. Since the rotating gear 41 is meshed 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, and the fixed block 6 is slidably inserted into the guide groove 32. Both ends of the guide groove 32 are provided with insertion holes larger than the fixed block 6, which is convenient for 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 be prevented from deflecting during the insertion 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 and facilitates disassembly, and also 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, and 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 block 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 respectively fixedly installed with the arrowhead block 81 and the fixed plate 82 with a slot. The fixed arc tube 7 is threadedly connected with the rotating tube 8, and the staff can move the rotating tube 8 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 to deflect it, thereby fixing the moving rod 71. The steel pipe pile 12 is fixedly installed with the arrowhead block 81 to fix it. At the same time, the cross-sectional area of ​​the grooves opened on the arrowhead block 81 and the fixed plate 82 is equal, ensuring that the arrowhead block 81 can be accurately inserted into the slot. At the same time, due to the triangular design at the top of the arrowhead block 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 surfaces of the support plate 1 and the outer surfaces of the support plate 11 are fixedly installed with support blocks 9, the outer surfaces of the arrowhead block 81 and the outer surfaces of the fixing plate 82 are fixedly installed with the outer surfaces of the support blocks 9 by bolts, and the support plate 1 is fixedly installed with the support plate 11 and the support block 9 to fix them. At the same time, after the arrowhead block 81 is inserted into the fixing plate 82, it is fixedly installed with 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 Figure 1-Figure 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 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 with 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 consistent with the size of the S-shaped groove on the support plate 11, the S-shaped plug block 2 fixedly mounted on the support plate 1 can be guided when 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 a square according to the required size, when the support plate 1 and the support plate 11 are enclosed into a closed structure, the bolts fixing the support plate 1 and the support plate 11 are removed, and the support plate 1 at the required position is rotated, and the roller 51 connected to the support plate 1 rolls with the arc groove 5 provided on the support plate 11, and the rotating gear 41 fixedly installed on the support plate 1 is meshed 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;

[0063] 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 block 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 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 specified position, fixes the support rod 61 and 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 installed with 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 fixation 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 after adjusting the position of the moving block 72, the rotating tube 8 is twisted again to fix the moving rod 71. The staff aligns the arrowhead block 81 of the steel pipe pile 12 with the arrowhead groove on the fixing plate 82. After the insertion is completed, the arrowhead block 81 and the fixing plate 82 are fixed to the support block 9 by bolts to further improve the stability.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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); 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 support device is located on the outer surface of the support plate (1) and fixes the steel pipe pile (12). The support device comprises a moving block (72). The movement of the moving block (72) supports the steel pipe pile (12).

2. A deepwater lock steel pipe pile cofferdam structure according to claim 1, characterized in that: The guide device also includes an S-shaped plug block (2), wherein the S-shaped plug 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); a guide groove (31) is provided on the outer surface of the guide block (3); guide grooves (32) are provided on the outer surfaces of the support plate (1) and the support plate (11); and inverted triangular plug blocks (33) are fixedly mounted on the lower surfaces of the support plate (1) and the support plate (11).

4. A deepwater locking 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 supporting plate (11), and the rotating gear (41) is fixedly mounted on the outer surface of the supporting plate (1), and the rotating gear (41) is meshed with the driving gear (4).

5. A deepwater locking steel pipe pile cofferdam structure according to claim 4, characterized in that: The outer surface of the support plate (11) is provided with an arc-shaped groove (5), the inner wall of the groove of the support plate (1) is rotatably connected with a roller (51), the roller (51) is in rolling contact with the inner wall of the arc-shaped groove (5), and 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 locking steel pipe pile cofferdam structure according to claim 5, characterized in that: 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.

7. A deepwater locking steel pipe pile cofferdam structure according to claim 6, characterized in that: 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), and one end of the moving rod (71) is fixedly mounted on the outer surface of the moving block (72).

8. A deepwater locking steel pipe pile cofferdam structure according to claim 7, characterized in that: The outer surface of the fixed arc tube (7) is threadedly connected with a rotating tube (8), the inner wall of the rotating tube (8) contacts the outer surface of the arc plate of the fixed arc tube (7), and the outer surface of the steel pipe pile (12) is respectively fixedly mounted with an arrowhead plug (81) and a fixed plate (82) with a slot.

9. A deepwater locking steel pipe pile cofferdam structure according to claim 8, 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 with the outer surface of the support block (9) by means of bolts.

10. A construction method for a deepwater lock steel pipe pile cofferdam structure according to claim 1, using a deepwater lock steel pipe pile cofferdam structure according to any one of claims 1 to 9, 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 block (2) fixedly mounted on the support plate (1) can be guided when it is 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, so that the roller (51) connected to the support plate (1) rolls with the arc groove (5) provided on the support plate (11), and the rotating gear (41) fixedly installed on the support plate (1) is meshed 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 plugs (33) fixedly installed on the lower surfaces 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 specified position, fixes the support rod (61) and the fixed block (6) by bolts, twists the rotating tube (8), releases the fixing of 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, moves it on the fixed arc tube (7), and its inner wall presses 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 pile driving 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, and after adjusting the position of the moving block (72), 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 the stability.

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