A steel sheet pile cofferdam support structure in the sea

Abstract

This application discloses a steel sheet pile cofferdam support structure in the sea, relating to the technical field of cofferdam support. It includes a corbel support plate disposed on the inner wall of the cofferdam; multiple support columns arranged circumferentially to form a frame-like structure; a straightening plate forming an installation space between the straightening plate and the inner wall of the cofferdam for installing the support columns; a control component controlling the straightening plate to slide towards the inner wall of the cofferdam during the process of the support column abutting against the corbel support plate; multiple filler plates stacked towards the inner wall of the cofferdam, with adjacent filler plates sliding vertically connected, and filler plates adjacent to support columns sliding vertically connected to the support columns; diagonal bracing columns, with both ends connected to the inner walls of adjacent support columns; a fixing component detachably fixing adjacent support columns; and a connecting component detachably fixing the diagonal bracing columns to the support columns. This application can reduce the possibility of safety hazards in the cofferdam structure.

Description

Technical Field

[0001] This application relates to the technical field of cofferdam support, and in particular to a steel sheet pile cofferdam support structure in the sea. Background Technology

[0002] In the field of marine engineering construction, projects such as cross-sea bridges, deep-water wharves, and artificial islands are constantly being advanced and developed. As a widely used temporary retaining structure, offshore steel sheet pile cofferdams provide crucial safe and reliable working spaces for the construction of underwater structures such as piers and columns. They greatly improve the efficiency and quality of marine engineering construction, promoting the expansion of marine engineering into deeper and wider sea areas, and have an undeniable value and impact on promoting the development and utilization of marine resources. With the expansion of the scale and increasing complexity of marine engineering projects, higher requirements are being placed on the performance and stability of offshore steel sheet pile cofferdams.

[0003] Currently, the industry commonly uses an internal support system composed of steel sections or steel pipes for the support structure of sheet pile cofferdams in the sea. To construct a stable structure capable of resisting external water and soil pressure, various methods are employed, such as on-site welding, bolting, or through-hole installation, to connect multiple horizontal supports to the inner wall of the sheet piles and the walers into a unified whole. In practice, the connection of traditional support structures mainly relies on on-site welding and manual drilling for positioning. A stable load-bearing frame is formed by rigidly fixing the ends of the support members to the walers or sheet piles. These methods, to a certain extent, meet construction requirements and have been widely used in past engineering practices.

[0004] However, the marine environment is characterized by harsh features such as high salt spray, high humidity, and strong winds and waves, posing serious challenges to the construction quality of the supporting structure. Welding operations, in particular, are highly susceptible to defects such as porosity, slag inclusions, and incomplete fusion due to sea winds, waves, and high humidity. This results in poor weld quality stability and poses a serious safety hazard to the cofferdam structure. Therefore, the existing connection methods for the supporting structure are ill-suited to the harsh marine environment and urgently need improvement. Summary of the Invention

[0005] To reduce the possibility of safety hazards in cofferdam structures, this application provides a steel sheet pile cofferdam support structure for offshore areas.

[0006] This application provides a steel sheet pile cofferdam support structure for marine cofferdams, employing the following technical solution: A marine steel sheet pile cofferdam support structure includes corbel support plates, which are arranged at equal intervals along the horizontal direction on the inner wall of the cofferdam. Support columns are provided on the corbel support plate, and there are multiple support columns that form a frame-like structure around the perimeter. The straightening plate is slidably connected to the corbel support plate, and an installation space is formed between the straightening plate and the inner wall of the cofferdam for the installation of the support column. A control component is disposed on the corbel support plate. During the process of the support column abutting against the corbel support plate, the control component controls the straightening plate to slide towards the inner wall of the cofferdam. A filling plate is disposed on the side of the support column facing the inner wall of the cofferdam. There are multiple filling plates stacked together in the direction of the inner wall of the cofferdam. Adjacent filling plates are slidably connected vertically. Filling plates adjacent to the support column are slidably connected vertically to the support column. Multiple diagonal bracing columns are provided between adjacent support columns, and the two ends of each diagonal bracing column are respectively connected to the inner wall of the adjacent support column. A fixing component is disposed on the support column, and adjacent support columns are detachably fixed together by the fixing component; A connecting component is disposed on the diagonal brace and the support column, and the diagonal brace and the support column are detachably fixed together by the connecting component.

[0007] By adopting the above technical solution, multiple corbel support plates are evenly spaced horizontally on the inner wall of the cofferdam, providing a support foundation for the support columns; multiple support columns form a circumferential frame structure, enhancing structural stability; straightening plates are slidably connected to the corbel support plates, forming an installation space with the inner wall of the cofferdam, facilitating the installation of the support columns; the control component controls the sliding of the straightening plate when the support column abuts the corbel support plate, which can assist in adjusting the position of the support column; multiple filling plates are stacked towards the inner wall of the cofferdam and are slidably connected to each other and to the support columns, adapting to different working conditions; multiple diagonal bracing columns are set between adjacent support columns, enhancing the overall structural strength; the fixing component allows adjacent support columns to be detachably fixed, facilitating installation and disassembly; the connecting component uses connecting discs, connecting plates, connecting bolts, and connecting nuts to achieve detachable fixing of the diagonal bracing columns and support columns, reducing the welding quality problems caused by the harsh marine environment of traditional welding methods, and improving the reliability and stability of the connection.

[0008] Optionally, the connecting assembly includes a connecting disc, a connecting plate, a connecting bolt, and a connecting nut; The connecting plates are arranged on the support column at equal intervals, and the connecting plates are provided with multiple connecting holes at equal intervals. The connecting discs are arranged at even intervals at the ends of the inclined support columns. The connecting discs abut against the top of the connecting plate. The connecting discs are provided with a plurality of through holes at even intervals, and the connecting holes correspond one-to-one with the through holes. The connecting bolts are multiple and pass through the through hole and the connecting hole respectively, and the connecting nut is threaded onto the connecting bolt.

[0009] By adopting the above technical solution, the connecting assembly consisting of connecting discs, connecting plates, connecting bolts, and connecting nuts enables the diagonal bracing column and the support column to be detachably fixed, reducing the impact of the harsh marine environment on traditional welding methods, ensuring connection quality, facilitating installation and disassembly, and improving construction efficiency.

[0010] Optionally, the fixing component includes a fixing block, a fixing disc, a fixing bolt, and a fixing nut; The fixing block is disposed at one end of the support column, and the fixing plate is disposed vertically opposite to the other end of the support column. When adjacent support columns are connected to each other, the fixing block is located between the vertically opposite fixing plates and abuts against each other. The fixing block has multiple fixing holes, the fixing plate has multiple connecting holes, and there are multiple fixing bolts that pass through the connecting holes and the fixing holes respectively. The fixing bolts are threaded onto the fixing bolts.

[0011] By adopting the above technical solution, a fixing component consisting of fixing blocks, fixing discs, fixing bolts, and fixing nuts is used, which reduces the traditional welding connection method, effectively avoids the impact of the harsh marine environment on welding quality, and enables detachable fixing between adjacent support columns, which facilitates installation and disassembly and improves the construction efficiency and stability of the support structure.

[0012] Optionally, positioning pins are slidably provided on the fixed plate and the connecting plate respectively, and insertion slots for the positioning pins are respectively opened on the fixed plate and the connecting plate.

[0013] By adopting the above technical solution, the setting of the positioning pin further facilitates the mutual alignment between the connecting hole and the through hole, as well as the mutual alignment between the connecting hole and the fixing hole.

[0014] Optionally, the filling plate away from the support column is an outer filling plate, and a driving column extending in the horizontal direction is provided on the outer filling plate, the driving column being slidably connected to the support column; The filling plate between the outer filling plate and the support column has an oblong hole for the drive column to pass through, and the oblong hole extends vertically downward to the outside of the filling plate; A limiting block is provided at one end of the drive column away from the filling plate, and a drive spring is sleeved on the outer periphery of the drive column. One end of the drive spring abuts against the limiting block, and the other end abuts against the support column.

[0015] By adopting the above technical solution, when the support column abuts the corbel support plate, the drive spring pushes the limiting block to make the drive column slide, which drives the outer filling plate to move towards the inner wall of the cofferdam. Multiple filling plates are stacked and can slide up and down, which can adapt to different installation requirements, better fill the gap between the support column and the inner wall of the cofferdam, enhance the stability of the support structure, and reduce the problem of support instability caused by gaps.

[0016] Optionally, the top of the outer filling plate and the top of the support column are respectively provided with mounting plates, and a telescopic column is provided between the mounting plates, the telescopic column passing through the waist-shaped hole.

[0017] By adopting the above technical solution, a telescopic column is set between the support column and the mounting plate of the outer filling plate, and the telescopic column passes through the waist-shaped hole. This allows the filling plate to be better adjusted in position with the installation of the support column under the action of the telescopic column, ensuring the stability of the stacked filling plate and enhancing the supporting effect of the support structure on the cofferdam.

[0018] Optionally, the top of the filler plate is formed with an arc-shaped guide surface.

[0019] By adopting the above technical solution, when installing the support column, the arc-shaped guide surface at the top of the filling plate can guide the support column to slide smoothly into the installation space, which facilitates the installation operation of the support column and improves the installation efficiency.

[0020] Optionally, the control assembly includes a control sleeve, a control block, a control coil spring, a control lead screw, a control rope, a control spring, and a control plate; The control sleeve is fitted onto the cow leg support plate, and the correction plate is disposed on the top of the control sleeve; The control block is disposed on the bottom inner wall of the control sleeve, and the bottom of the bracket support plate is provided with a control groove for the control block to slide. The control screw is rotatably connected to the bracket support plate and located in the control groove. The control block is threadedly connected to the control screw. The control coil spring is wrapped around the outer periphery of the control screw. One end of the control coil spring is engaged with the control screw, and the other end is engaged with the bracket support plate. The top of the support plate of the corbel is provided with a receiving groove, which is located below the support column and close to the filling plate. The control plate slides up and down in the receiving groove, and the control spring is installed in the receiving groove. The control spring drives the control plate to slide upward and protrude out of the receiving groove. The control rope is slidably threaded through the bracket support plate, the control rope is wrapped around the outer periphery of the control screw, one end of the control rope is connected to the outer periphery of the control screw, and the other end is connected to the control plate; When the control plate slides into the receiving groove, the control rope drives the control screw to rotate, and at this time the control sleeve slides towards the support column.

[0021] By adopting the above technical solution, when the support column abuts the corbel support plate, the control plate slides into the receiving groove, the control rope drives the control screw to rotate, causing the control sleeve to slide towards the support column, and then driving the straightening plate to slide towards the inner wall of the cofferdam, automatically adjusting the installation position of the support column, and improving installation efficiency and accuracy.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. It reduces the possibility of problems arising from the reliance on on-site welding operations in traditional support structure connection methods, avoids the impact of harsh marine environments on welding quality, and improves the safety of the support structure; 2. Support columns, diagonal braces and other components can be detachably fixed through fixing components and connecting components, which facilitates installation and disassembly and improves construction efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of an embodiment of this application; Figure 3 yes Figure 2 Enlarged schematic diagram of part A; Figure 4 This is a schematic diagram of the connection structure between the support columns in an embodiment of this application; Figure 5 yes Figure 4 Enlarged schematic diagram of part B; Figure 6 This is a schematic diagram of the connection structure between the support column and the diagonal brace in an embodiment of this application; Figure 7 yes Figure 6 Enlarged schematic diagram of part C.

[0024] Reference numerals: 1. Bracket support plate; 11. Correction plate; 12. Installation space; 13. Control groove; 14. Receiving groove; 2. Support column; 21. Diagonal brace column; 3. Control assembly; 31. Control sleeve; 32. Control block; 33. Control coil spring; 34. Control screw; 35. Control rope; 36. Control spring; 37. Control plate; 4. Filler plate; 41. Outer filler plate; 42. Drive column; 421. Limiting block; 422. Drive spring; 43. Waist-shaped hole; 44. Mounting plate; 45. Telescopic column; 46. Arc-shaped guide surface; 5. Fixing assembly; 51. Fixing block; 52. Fixing disc; 53. Fixing bolt; 54. Fixing nut; 6. Connecting assembly; 61. Connecting disc; 62. Connecting plate; 63. Connecting bolt; 64. Connecting nut; 7. Positioning pin; 71. Insertion groove. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0026] This application discloses a steel sheet pile cofferdam support structure in the sea. Example

[0027] See Figure 1 This application mainly uses components such as corbel support plate 1 and support column 2 to construct a prefabricated cofferdam support structure. During construction, the assembled support structure is hoisted into the cofferdam, so that the support structure supports the cofferdam. There is no need to weld the connection in the harsh marine environment, which helps to improve the stability of the cofferdam structure. The following is a further detailed description of this application.

[0028] See Figure 2 and Figure 3 The marine sheet pile cofferdam support structure provided in this application embodiment includes a corbel support plate 1, a support column 2, a straightening plate 11, a control component 3, a filling plate 4, a diagonal brace column 21, and a fixing component 5 (the fixing component 5 is in...). Figure 1 (marked out) and connecting component 6 (connecting component 6 in) Figure 1(Winning bid). The bracket support plates 1 are evenly spaced horizontally on the inner wall of the cofferdam. Support columns 2 are placed on the bracket support plates 1 and form a circumferential frame structure. Correction plates 11 are slidably connected to the bracket support plates 1 and form an installation space 12 with the inner wall of the cofferdam. Control components 3 are installed on the bracket support plates 1 and can control the correction plates 11 to slide towards the inner wall of the cofferdam when the support columns 2 abut against the bracket support plates 1. Filling plates 4 are arranged on the side of the support columns 2 facing the inner wall of the cofferdam, and multiple plates are stacked towards the inner wall of the cofferdam. Adjacent filling plates 4 and filling plates 4 adjacent to support columns 2 are slidably connected vertically. Diagonal bracing columns 21 are arranged between adjacent support columns 2, with both ends connected to the inner walls of the adjacent support columns 2. The fixing component 5 is installed on the support column 2, so that the adjacent support column 2 can be detachably fixed. The connecting component 6 is set on the diagonal brace column 21 and the support column 2, so that the diagonal brace column 21 and the support column 2 can be detachably fixed. This structural setting makes the support structure less need for a lot of on-site welding, reduces the possibility of the harsh marine environment affecting the welding quality, and improves the stability and safety of the cofferdam structure.

[0029] Specifically, the corbel support plate 1 is typically made of high-strength steel and has a plate-like structure. The surface of the corbel support plate 1 is smooth and flat to ensure the stability of the support column 2. An inclined support plate is fixedly connected between the bottom of the corbel support plate 1 and the inner wall of the cofferdam. The corbel support plate 1 can be fixed to the inner wall of the cofferdam by welding or bolting. The welding is pre-completed inland to reduce the possibility of on-site welding in a marine environment. The corbel support plate 1 can also be replaced with other materials with sufficient strength and support capacity, such as aluminum alloy.

[0030] The support column 2 is generally made of steel pipe or structural steel, possessing high strength and rigidity, and capable of withstanding significant pressure. In this embodiment, the support column 2 is a structural steel structure. The support column 2 can also be made of other shapes and materials, such as rectangular tubing.

[0031] The straightening plate 11 is generally made of steel plate, and is rectangular in shape with a smooth surface. The installation space 12 formed by the straightening plate 11 and the inner wall of the cofferdam provides accurate positioning for the installation of the support column 2, ensuring the accuracy of the installation of the support column 2.

[0032] The control assembly 3 includes a control sleeve 31, a control block 32, a control coil spring 33, a control screw 34, a control rope 35, a control spring 36, and a control plate 37. The control sleeve 31 is typically made of metal and is slidably fitted onto the bracket support plate 1. The straightening plate 11 is fixedly mounted on the top of the control sleeve 31. The control block 32 is fixedly mounted on the inner wall of the bottom of the control sleeve 31. The bottom of the bracket support plate 1 has a control groove 13 for the control block 32 to slide in. The control screw 34 is rotatably connected to the bracket support plate 1 and is located within the control groove 13. The control block 32 is threaded onto the control screw 34. The control coil spring 33 is wound around the outer periphery of the control screw 34, with one end clamped and fixed to the control screw 34 and the other end clamped and fixed to the bracket support plate 1. The top of the bracket support plate 1 has a receiving groove 14, in which the control plate 37 slides up and down. A control spring 36 is installed inside the receiving groove 14. The top of the control spring 36 is fixed to the bottom of the control plate 37, and the bottom of the control spring 36 is fixed to the bottom wall of the receiving groove 14. When the control spring 36 is released elastically, it drives the control plate 37 to slide upward and protrude out of the receiving groove 14. A control rope 35 is slidably threaded through the bracket support plate 1. The control rope 35 is wrapped around the outer periphery of the control screw 34. One end of the control rope 35 is connected and fixed to the outer periphery of the control screw 34, and the other end is connected and fixed to the control plate 37. When the support column 2 abuts against the corbel support plate 1, the support column 2 forces the control plate 37 to slide into the receiving groove 14. At this time, the control plate 37 pulls the control rope 35, causing the control screw 34 to rotate. The control coil spring 33 enters an elastic contraction state, while the control sleeve 31 slides towards the support column 2, thereby causing the straightening plate 11 to slide towards the inner wall of the cofferdam. This corrects and positions the support column 2, ensuring that the distance between the support column 2 and the inner wall of the cofferdam meets the design requirements, facilitating the installation of the filling plate 4, and ensuring that the cofferdam can transmit force to the support column 2 through the filling plate 4. The control component 3 achieves automatic control through a mechanical structure, reducing the instability of complex electronic control systems in the marine environment. When the support column 2 slides upward away from the corbel support plate 1, the control spring 36 drives the control plate 37 to slide upward out of the receiving groove 14. At this time, the control coil spring 33 is released elastically, causing the control screw 34 to rotate in the opposite direction, winding the control rope 35 around the outer periphery of the control screw 34.

[0033] The filler plate 4 is generally made of steel plate and is rectangular in shape. An arc-shaped guide surface 46 is formed on the top of the filler plate 4 to facilitate stacking and sliding between filler plates 4. The surface of the filler plate 4 is smooth, reducing friction during sliding. The filler plate 4 furthest from the support column 2 is the outer filler plate 41. Multiple drive columns 42 extending horizontally are fixedly connected to the outer filler plate 41 and are evenly spaced along the length of the support column 2. The drive columns 42 are slidably connected to the support column 2, and one end of the drive column 42 furthest from the filler plate 4 extends between the two flanges of the support column 2. Oval holes 43 are respectively opened on the outer filler plate 41 and the filler plate 4 between the support columns 2. The oval holes 43 extend vertically downwards to the outside of the filler plate 4, and the drive columns 42 slide within the oval holes 43. A limiting block 421 is fixedly connected to the end of the drive column 42 away from the filling plate 4. A drive spring 422 is sleeved on the outer periphery of the drive column 42. One end of the drive spring 422 abuts against the limiting block 421, and the other end abuts against the support column 2. When the drive spring 422 is released elastically, the outer filling plate 41 slides closer to the support column 2 through the limiting block 421 and the drive column 42. Mounting plates 44 are fixedly connected to the top of the outer filling plate 41 and the support column 2, respectively. A telescopic column 45 is fixedly connected between the mounting plates 44. The telescopic column 45 includes an inner column and an outer column. The inner column and the outer column are fixedly connected to the opposite sides of the two mounting plates 44, respectively. The inner column is slidably connected to the outer column and is coaxially arranged. The telescopic column 45 passes through the waist-shaped hole 43. In the initial state, the filling plate 4 between the outer filling plate 41 and the support column 2 is slidably separated upwards. At this time, the drive spring 422 can drive the outer filling plate 41 to abut against the support column 2, while the remaining filling plates 4 are located above the outer filling plate 41 and the support column 2. When the support structure is lowered into the cofferdam, so that the support column 2 abuts against the corbel support plate 1, the filling plate 4 is slid down to insert between the outer filling plate 41 and the support column 2, reducing the gap between the outer filling plate 41 and the inner wall of the cofferdam, until the end of the outer filling plate 41 away from the support column 2 abuts against the inner wall of the cofferdam.

[0034] The diagonal bracing column 21 is generally made of steel pipe or shaped steel, and both ends of the diagonal bracing column 21 can be processed into shapes suitable for connection with the support column 2. The installation of the diagonal bracing column 21 enhances the stability of the support structure, enabling the support column 2 to better resist external water pressure, wave force and tidal current impact.

[0035] See Figure 4 and Figure 5The fixing component 5 includes a fixing block 51, a fixing plate 52, fixing bolts 53, and fixing nuts 54. The fixing block 51 is fixed to one end of the support column 2, and the fixing plate 52 is fixed to the other end of the support column 2, with the upper and lower plates facing each other. When adjacent support columns 2 are connected and enclosed, the fixing block 51 is located between the upper and lower fixing plates 52 and abuts against each other. The fixing block 51 has multiple evenly spaced fixing holes, and the fixing plate 52 has multiple connecting holes, with each connecting hole corresponding to one of the fixing holes. Multiple fixing bolts 53 pass through both the connecting holes and the fixing holes, and the fixing nuts 54 are threaded onto the fixing bolts 53. Through the fixing component 5, adjacent support columns 2 can be easily disassembled and installed, facilitating construction and maintenance.

[0036] See Figure 6 and Figure 7 The connecting assembly 6 includes connecting discs 61, connecting plates 62, connecting bolts 63, and connecting nuts 64. Multiple connecting plates 62 are evenly spaced and fixed to the support column 2, and each connecting plate 62 has evenly spaced connecting holes. Multiple connecting discs 61 are evenly spaced and installed at the ends of the diagonal brace column 21, abutting against the top of the connecting plates 62. Each connecting disc 61 has evenly spaced through holes, with each connecting hole corresponding to the previous one. Multiple connecting bolts 63 pass through both the through holes and the connecting holes, and the connecting nuts 64 are threaded onto the connecting bolts 63. Through the connecting assembly 6, the diagonal brace column 21 and the support column 2 can be easily disassembled and installed, improving construction efficiency.

[0037] join Figure 5 and Figure 7 Positioning pins 7 are slidably inserted into both the fixed plate 52 and the connecting plate 61, and insertion slots 71 are provided on both the fixed plate 52 and the connecting plate 61 for the positioning pins 7 to be inserted. The positioning pins 7 are generally made of metal, are square-column shaped, and have a smooth surface for easy insertion and removal. The positioning pins 7 further facilitate the alignment between the connecting hole and the through hole, as well as the alignment between the connecting hole and the fixing hole.

[0038] The implementation principle of a marine steel sheet pile cofferdam support structure according to an embodiment of this application is as follows: This embodiment of the marine sheet pile cofferdam support structure adopts a prefabricated structure. Through the rational arrangement and coordination of various components, the possibility of extensive on-site welding work as in traditional support structures is reduced, minimizing the impact of the harsh marine environment on welding quality. During construction, the support structure can be directly hoisted into the cofferdam after assembly and fixation. The corbel support plate 1 provides a stable support foundation for the support column 2, the straightening plate 11 and control components 3 ensure the accuracy of the support column 2 installation, the filling plate 4 acts as a buffer and support, the diagonal brace column 21 enhances the stability of the support structure, and the fixing components 5 and connecting components 6 enable detachable connections between components, facilitating construction and maintenance. The entire support structure maintains good stability and safety in the marine environment, improving the construction quality and reliability of the marine sheet pile cofferdam.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel sheet pile cofferdam support structure for marine environments, characterized in that: Including corbel support plates (1), there are multiple plates that are evenly spaced along the horizontal direction on the inner wall of the cofferdam; Support columns (2) are set on the bracket support plate (1), and there are multiple support columns (2) that form a frame structure around the perimeter; The straightening plate (11) is slidably connected to the corbel support plate (1), and an installation space (12) is formed between the straightening plate (11) and the inner wall of the cofferdam for the support column (2) to be installed. Control component (3) is provided on the corbel support plate (1). During the process of the support column (2) abutting against the corbel support plate (1), the control component (3) controls the straightening plate (11) to slide towards the inner wall of the cofferdam. A filling plate (4) is provided on the side of the support column (2) facing the inner wall of the cofferdam. There are multiple filling plates (4) stacked in the direction of the inner wall of the cofferdam. Adjacent filling plates (4) are slidably connected up and down. The filling plate (4) adjacent to the support column (2) is slidably connected up and down with the support column (2). There are multiple diagonal bracing columns (21) and they are arranged between adjacent support columns (2). The two ends of the diagonal bracing columns (21) are respectively connected to the inner walls of the adjacent support columns (2). A fixing component (5) is disposed on the support column (2), and adjacent support columns (2) are detachably fixed together by the fixing component (5); A connecting component (6) is provided on the diagonal brace (21) and the support column (2), and the diagonal brace (21) and the support column (2) are detachably fixed together by the connecting component (6).

2. The marine steel sheet pile cofferdam support structure according to claim 1, characterized in that: The connecting assembly (6) includes a connecting disc (61), a connecting plate (62), a connecting bolt (63), and a connecting nut (64). The connecting plate (62) is provided in multiple and evenly spaced vertically on the support column (2), and the connecting plate (62) is provided with multiple connecting holes evenly spaced vertically. The connecting discs (61) are multiple and evenly spaced at the ends of the inclined support column (21). The connecting discs (61) abut against the top of the connecting plate (62). The connecting discs (61) are evenly spaced with multiple through holes, and the connecting holes correspond one-to-one with the through holes. The connecting bolts (63) are multiple and pass through the through hole and the connecting hole respectively, and the connecting nut (64) is threaded onto the connecting bolts (63).

3. The marine steel sheet pile cofferdam support structure according to claim 2, characterized in that: The fixing component (5) includes a fixing block (51), a fixing plate (52), a fixing bolt (53), and a fixing nut (54); The fixing block (51) is disposed at one end of the support column (2), and the fixing plate (52) is disposed at the other end of the support column (2) with the upper and lower sides opposite each other. When adjacent support columns (2) are connected to each other, the fixing block (51) is located between the upper and lower opposite fixing plates (52) and abuts against each other. The fixing block (51) has multiple fixing holes, the fixing plate (52) has multiple connecting holes, the fixing bolts (53) are multiple and pass through the connecting holes and the fixing holes respectively, and the fixing bolts (53) are threaded onto the fixing bolts (53).

4. The marine steel sheet pile cofferdam support structure according to claim 3, characterized in that: Positioning pins (7) are slidably passed through the fixed plate (52) and the connecting plate (61), and insertion slots (71) are opened on the fixed plate (52) and the connecting plate (61) for the positioning pins (7) to be inserted.

5. The marine steel sheet pile cofferdam support structure according to claim 1, characterized in that: The filling plate (4) away from the support column (2) is an outer filling plate (41), and a driving column (42) extending in the horizontal direction is provided on the outer filling plate (41). The driving column (42) is slidably connected to the support column (2). The filling plate (4) between the outer filling plate (41) and the support column (2) has an oblong hole (43) through which the drive column (42) passes. The oblong hole (43) extends vertically downward to the outside of the filling plate (4). A limiting block (421) is provided at one end of the drive column (42) away from the filling plate (4), and a drive spring (422) is sleeved on the outer periphery of the drive column (42). One end of the drive spring (422) abuts against the limiting block (421), and the other end abuts against the support column (2).

6. The marine steel sheet pile cofferdam support structure according to claim 5, characterized in that: The top of the outer filling plate (41) and the support column (2) are respectively provided with mounting plates (44), and telescopic columns (45) are provided between the mounting plates (44), and the telescopic columns (45) pass through the waist-shaped hole (43).

7. A marine steel sheet pile cofferdam support structure according to claim 6, characterized in that: The top of the filler plate (4) has an arc-shaped guide surface (46).

8. The marine steel sheet pile cofferdam support structure according to claim 1, characterized in that: The control assembly (3) includes a control sleeve (31), a control block (32), a control coil spring (33), a control lead screw (34), a control rope (35), a control spring (36), and a control plate (37). The control sleeve (31) is fitted onto the cow leg support plate (1), and the correction plate (11) is disposed on the top of the control sleeve (31); The control block (32) is disposed on the bottom inner wall of the control sleeve (31), and the bottom of the bracket support plate (1) is provided with a control groove (13) for the control block (32) to slide. The control screw (34) is rotatably connected to the bracket support plate (1) and located in the control groove (13). The control block (32) is threadedly connected to the control screw (34). The control coil spring (33) is wrapped around the outer periphery of the control screw (34). One end of the control coil spring (33) is engaged with the control screw (34), and the other end is engaged with the bracket support plate (1). The top of the support plate (1) is provided with a receiving groove (14). The receiving groove (14) is located below the support column (2) and close to the filling plate (4). The control plate (37) slides up and down in the receiving groove (14). The control spring (36) is installed in the receiving groove (14). The control spring (36) drives the control plate (37) to slide upward and protrude out of the receiving groove (14). The control rope (35) slides through the cow leg support plate (1), the control rope (35) is wrapped around the outer periphery of the control screw (34), one end of the control rope (35) is connected to the outer periphery of the control screw (34), and the other end is connected to the control plate (37). When the control plate (37) slides into the receiving groove (14), the control rope (35) drives the control screw (34) to rotate, and at this time the control sleeve (31) slides towards the support column (2).

Images