A repair device and method for anti-floating bolts of immersed tube steel formwork

Abstract

The present invention relates to a repair device and method for anti-floating bolts of a steel template for a submerged tube. The repair device comprises a first sleeve, which is located on one side of the original sleeve of the dry dock along the longitudinal direction of the steel template for a submerged tube, is vertically arranged, is connected to the original sleeve, and is located on the same straight line in the longitudinal direction of the steel template for a submerged tube with the original sleeve. The first sleeve is used to vertically connect the second sleeve on the steel template for a submerged tube through a screw to form anti-floating of the steel template for a submerged tube. The second sleeve at the upper end of the anti-floating bolt is adjusted in the longitudinal direction of the steel template for a submerged tube, so that the first sleeve can replace the original sleeve and connect with the adjusted second sleeve, thereby forming anti-floating of the steel template for a submerged tube, and the repaired anti-floating bolt can still be repeatedly disassembled and assembled through the threaded connection between the screw and the first sleeve. The dry dock does not need to be excavated to re-embed the sleeve at the lower end of the screw, and the structure is simple, the cost is low, and the construction is more convenient, and the quality of the dry dock will not be affected.

Description

Technical Field

[0001] The present invention relates to the technical field of the repair of anti-floating bolts for immersed tube steel formwork, in particular to a repair device and a repair method for anti-floating bolts of immersed tube steel formwork. Background Art

[0002] In a dry dock immersed tube prefabrication yard, the anti-floating bolts of the immersed tube steel formwork include a screw rod and sleeves at both ends of the screw rod. The sleeve threadedly connected to the upper end of the screw rod pulls the immersed tube steel formwork downward, and the sleeve threadedly connected to the lower end of the screw rod is embedded in the embedded hole on the dry dock ground. Due to the repeated disassembly and assembly of the anti-floating bolts, rainwater immersion, and non-standard use, the sleeves at the lower end of the screw rod are corroded and deformed and cannot be used continuously. If the dry dock is excavated to re-embed the sleeves at the lower end of the screw rod, it will affect the overall quality of the dry dock and the construction difficulty is large. At present, there is no way to repair the sleeves at the lower end of the damaged anti-floating bolts. Summary of the Invention

[0003] The purpose of the present invention is to provide a repair device and a repair method for anti-floating bolts of immersed tube steel formwork in view of the problem that the sleeves at the lower end of the anti-floating bolts in the prior art are corroded and deformed and cannot be used continuously due to repeated disassembly and assembly, rainwater immersion, and non-standard use, and there is no way to repair the sleeves at the lower end of the damaged anti-floating bolts.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A repair device for anti-floating bolts of immersed tube steel formwork includes a first sleeve. The first sleeve is located on one side of the original sleeve in the longitudinal direction of the immersed tube steel formwork in the dry dock. The first sleeve is vertically arranged and is connected to the original sleeve. The first sleeve and the original sleeve are on the same straight line in the longitudinal direction of the immersed tube steel formwork. The first sleeve is used to vertically connect the second sleeve on the immersed tube steel formwork through a screw rod to form anti-floating for the immersed tube steel formwork.

[0006] In this solution, the original sleeve refers to the sleeve that is corroded and deformed and cannot be used continuously due to repeated disassembly and assembly, rainwater immersion, and non-standard use of the anti-floating bolts. The first sleeve is arranged on one side of the original sleeve in the longitudinal direction of the immersed tube steel formwork and is vertically arranged based on the fact that the second sleeve at the upper end of the anti-floating bolt can move longitudinally along the immersed tube steel formwork before being connected to the original sleeve at the lower end. By adjusting the longitudinal position of the second sleeve at the upper end of the anti-floating bolt along the immersed tube steel formwork, the position of the first sleeve corresponds to the adjusted second sleeve, so that the first sleeve can be connected to the second sleeve through the screw rod, and the first sleeve can also be connected to the original sleeve, thereby forming anti-floating for the immersed tube steel formwork.

[0007] For the anti-floating bolt repair device of the immersed tube steel formwork described in this solution, the second sleeve at the upper end of the anti-floating bolt adjusts its position longitudinally along the immersed tube steel formwork, so that the first sleeve which is connected to one side of the original sleeve longitudinally along the immersed tube steel formwork and is vertically arranged can replace the original sleeve to be connected with the adjusted second sleeve, thereby forming the anti-floating of the immersed tube steel formwork, and the repaired anti-floating bolt can still be disassembled and assembled repeatedly through the threaded connection between the screw rod and the first sleeve. It does not need to excavate the dry dock to re-embed the sleeve at the lower end of the screw rod. Its structure is simple, the cost is low, and the construction is more convenient without affecting the quality of the dry dock.

[0008] Preferably, it further includes a strengthening structure for strengthening the connection between the first sleeve and the original sleeve.

[0009] Strengthening the connection between the first sleeve and the original sleeve through the strengthening structure can improve the anti-pulling ability of the repaired anti-floating bolt.

[0010] Preferably, the strengthening structure is a strengthening rod or a reinforcing bar. The strengthening structure is vertically arranged, and the side of the strengthening structure is welded to the first sleeve and the original sleeve. The first sleeve and the original sleeve are in contact or welded.

[0011] The strengthening structure is a strengthening rod. Compared with a reinforcing bar, its side is smoother, which can be better welded to the first sleeve and the original sleeve, and the welding quality is better. By welding the side of the strengthening structure to the first sleeve and the original sleeve, and the first sleeve and the original sleeve are in contact or welded, it can facilitate the formation of a fixed connection relationship between the first sleeve and the original sleeve, and make the connection process more convenient.

[0012] Preferably, there are two strengthening structures, and the two strengthening structures are located on both sides of the first sleeve transversely with respect to the immersed tube steel formwork. There are more welding positions, and the anti-pulling ability after welding is better.

[0013] Preferably, the first sleeve has the same size as the original sleeve, which is convenient for replacing the function of the first sleeve.

[0014] A method for repairing the anti-floating bolts of the immersed tube steel formwork uses the anti-floating bolt repair device for the immersed tube steel formwork as described above to repair the anti-floating bolts, and includes the following repair steps:

[0015] S1. Connect a vertically arranged first sleeve to one side of the original sleeve longitudinally along the immersed tube steel formwork in the dry dock;

[0016] S2. Form the anti-floating of the immersed tube steel formwork by connecting the first sleeve and the second sleeve on the immersed tube steel formwork through the screw thread of the screw rod;

[0017] Among them, before step S2, the second sleeve can move longitudinally along the immersed tube steel formwork.

[0018] The anti-floating bolt repair method for the immersed tube steel formwork described in this solution does not require excavating the dry dock to re-embed the sleeve at the lower end of the screw. Its construction is more convenient and does not affect the quality of the dry dock, and it can make the function of the repaired anti-floating bolt the same as that of the original anti-floating bolt.

[0019] Preferably, in step S1, vertically arranged strengthening structures are welded on both sides of the first sleeve in the transverse direction of the immersed tube steel formwork, so that the strengthening structures are welded to the first sleeve and the original sleeve, which can improve the anti-pulling ability of the first sleeve.

[0020] Preferably, the diameter of the strengthening structure is smaller than the diameter of the original sleeve and smaller than the diameter of the first sleeve;

[0021] In step S1, first place the first sleeve close to the original sleeve and on the same longitudinal straight line of the immersed tube steel formwork as the original sleeve, and then spot-weld the first sleeve and the original sleeve; then place the strengthening structure on one side of the first sleeve in the transverse direction of the immersed tube steel formwork close to the first sleeve and the original sleeve, and then fully weld the contact positions of the strengthening structure with the first sleeve and the original sleeve respectively; then place the strengthening structure on the other side of the first sleeve in the transverse direction of the immersed tube steel formwork close to the first sleeve and the original sleeve, and then fully weld the contact positions of the strengthening structure with the first sleeve and the original sleeve respectively to realize the connection between the original sleeve and the first sleeve.

[0022] The diameters of the original sleeve and the first sleeve are relatively large, their welds are deeper, the welding difficulty is greater, and the welding quality is poor. In this solution, the diameter of the strengthening structure is smaller than the diameters of the original sleeve and the first sleeve. By using the strengthening structure as the main anti-pulling ability of the original sleeve and the first sleeve, first spot-weld the first sleeve and the original sleeve to form a positioning to ensure the accurate position of the first sleeve. On this basis, position and fully weld the strengthening structure on one side with the first sleeve and the original sleeve, which is convenient for the welding operation of this side of the strengthening structure and ensures the welding quality; then position and fully weld the strengthening structure on the other side with the first sleeve and the original sleeve, which is convenient for the welding operation of this side of the strengthening structure and ensures the welding quality. This construction method can use the strengthening structure as the intermediate welding as the main anti-pulling ability of the original sleeve and the first sleeve. The diameter of the strengthening structure is smaller, and the welds between the strengthening structure and the original sleeve and the first sleeve are shallower respectively, which can reduce the welding difficulty and improve the welding quality; and the construction sequence can ensure more accurate positioning, more convenient welding operation, better welding quality, and better quality of the repaired anti-floating bolt.

[0023] Preferably, there is a pre-embedded hole on the dry dock, and the original sleeve is in the pre-embedded hole;

[0024] Before step S1, an enlarged hole intersecting with the pre-embedded hole is opened on the side surface of the pre-embedded hole at an angle of 20 - 40° in the transverse direction of the immersed tube steel formwork to provide an operating space for the welding of the first sleeve and the strengthening structure.

[0025] Since the original sleeve has become ineffective and cannot be connected to the screw of the anti-floating bolt, the original sleeve may have been deformed at this time, such as in an inclined state, which may interfere with the installation positions of the first sleeve and the strengthening structure. In this solution, by opening an enlarged hole intersecting with the embedded hole on the side of the embedded hole that forms an angle of 20-40° with the transverse direction of the immersed tube steel formwork, and the enlarged hole communicates with the side of the embedded hole, it can provide more space positions for the installation of the first sleeve strengthening structure. At the same time, the connecting line between the center of the enlarged hole and the embedded hole forms a deviation angle of 20-40° with the transverse direction of the immersed tube steel formwork, which can expose the welding positions of the first sleeve, the strengthening structure and the original sleeve as much as possible from the side of the intersection of the enlarged hole and the embedded hole, making the subsequent welding operation more convenient and the welding effect better.

[0026] Preferably, before step S1, measure and set out the line along the longitudinal direction of the immersed tube steel formwork to ensure that the first sleeve and the original sleeve are on the same straight line in the longitudinal direction of the immersed tube steel formwork, so as to ensure that the first sleeve can be threadedly connected to the second sleeve adjusted along the longitudinal direction of the immersed tube steel formwork through the screw.

[0027] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0028] 1. For the anti-floating bolt repair device for the immersed tube steel formwork of the present invention, the second sleeve at the upper end of the anti-floating bolt adjusts its position along the longitudinal direction of the immersed tube steel formwork, so that the first sleeve connected to one side of the original sleeve along the longitudinal direction of the immersed tube steel formwork and arranged vertically can replace the original sleeve to be connected to the adjusted second sleeve, thereby forming the anti-floating of the immersed tube steel formwork. Moreover, the repaired anti-floating bolt can still be repeatedly disassembled and assembled through the threaded connection between the screw and the first sleeve. It does not require excavating the dry dock to re-embed the sleeve at the lower end of the screw. Its structure is simple, the cost is low, the construction is more convenient, and it will not affect the quality of the dry dock.

[0029] 2. For the anti-floating bolt repair device for the immersed tube steel formwork of the present invention, the side surface of the first sleeve with respect to the transverse direction of the immersed tube steel formwork is welded to the original sleeve through the strengthening structure, which can improve the anti-pulling ability of the repaired anti-floating bolt.

[0030] 3. For the anti-floating bolt repair method for the immersed tube steel formwork of the present invention, it does not require excavating the dry dock to re-embed the sleeve at the lower end of the screw. The construction is more convenient and it will not affect the quality of the dry dock, and it can make the function of the repaired anti-floating bolt consistent with that of the original anti-floating bolt.

[0031] 4. The anti-floating bolt repair method for the immersed tube steel formwork of the present invention can use the strengthening structure as the intermediate welding to enhance the main anti-pulling ability of the original sleeve and the first sleeve. The strengthening structure has a smaller diameter, and the welds between the strengthening structure and the original sleeve and the first sleeve are shallower, which can reduce the welding difficulty and improve the welding quality. Moreover, the construction sequence can ensure more accurate positioning, more convenient welding operation, and better welding quality, resulting in better quality of the repaired anti-floating bolts.

[0032] 5. The anti-floating bolt repair method for the immersed tube steel formwork of the present invention provides more space positions for the setting of the strengthening structure of the first sleeve by opening an enlarged hole intersecting with the embedded hole on the side of the embedded hole at an angle of 20° to 40° with respect to the transverse direction of the immersed tube steel formwork. The enlarged hole is connected to the side of the embedded hole, avoiding the influence of the deformation of the original sleeve. At the same time, the connecting line between the center of the enlarged hole and the embedded hole forms an angle of 20° to 40° with respect to the transverse direction of the immersed tube steel formwork, which can expose the welding positions of the first sleeve, the strengthening structure, and the original sleeve as much as possible from the side of the intersection of the enlarged hole and the embedded hole, making the subsequent welding operation more convenient and the welding effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the anti-floating bolt repair device for the immersed tube steel formwork in Embodiment 1;

[0034] Figure 2 is a plan view of the anti-floating bolt repair device for the immersed tube steel formwork in Embodiment 1.

[0035] Reference numerals: 1 - dry dock; 11 - dry dock floor; 2 - embedded hole; 3 - enlarged hole; 4 - original sleeve; 41 - screw; 42 - second sleeve; 43 - gasket; 5 - first sleeve; 6 - strengthening structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The present invention will be described in detail below with reference to the drawings.

[0037] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] Embodiment 1

[0039] This embodiment provides an anti-floating bolt repair device for an immersed tube steel formwork, as Figure 1-2As shown in the figure, it includes a first sleeve 5. The first sleeve 5 is located on one side of the original sleeve 4 of the dry dock 1 along the longitudinal direction of the immersed tube steel formwork. The first sleeve 5 is vertically arranged and is connected to the original sleeve 4. The first sleeve 5 and the original sleeve 4 are on the same straight line along the longitudinal direction of the immersed tube steel formwork. The first sleeve 5 is used to vertically connect the second sleeve 42 on the immersed tube steel formwork through a screw rod 41 to form anti-floating for the immersed tube steel formwork.

[0040] In this solution, the anti-floating bolt includes the original sleeve 4 embedded at the lower end, the second sleeve 42 that pulls the immersed tube steel formwork downward at the upper end, and the screw rod 41 connecting the original sleeve 4 and the second sleeve 42. Generally, a gasket 43 is also provided at the lower end of the second sleeve 42. The original sleeve 4 refers to the sleeve that cannot be used continuously due to rust, deformation caused by repeated disassembly and assembly of the anti-floating bolt, rainwater immersion, and non-standard use, and it cannot be thread-connected to the screw rod 41 of the anti-floating bolt. When the original sleeve 4 can still be used, the second sleeve 42 is located directly above the original sleeve 4. Both the original sleeve 4 and the second sleeve 42 are vertically arranged and have internal threads.

[0041] As Figure 1 shown in the figure, setting the first sleeve 5 on one side of the original sleeve 4 along the longitudinal direction of the immersed tube steel formwork and vertically arranging it is based on the fact that the second sleeve 42 at the upper end of the anti-floating bolt can move along the longitudinal direction of the immersed tube steel formwork before being connected to the original sleeve 4 at the lower end. By adjusting the position of the second sleeve 42 at the upper end of the anti-floating bolt along the longitudinal direction of the immersed tube steel formwork, the position of the first sleeve 5 corresponds to the adjusted position of the second sleeve 42, that is, the second sleeve 42 can be located directly above the first sleeve 5 after being fixed to the original sleeve 4, so that the first sleeve 5 can be connected to the second sleeve 42 through the screw rod 41, and the first sleeve 5 can also be connected and fixed to the original sleeve 4, thereby forming anti-floating for the immersed tube steel formwork.

[0042] In this solution, the first sleeve 5 is preferably the same size as the original sleeve 4, which is convenient for replacing the function of the first sleeve 5. And the first sleeve 5 and the original sleeve 4 are preferably fixedly connected by welding. Since the diameters of the first sleeve 5 and the original sleeve 4 are relatively large, such as sleeves made of M32 threaded steel bars, their welds are relatively deep, the full-weld operation is difficult, and the welding quality is poor, which may affect the pulling resistance of the first sleeve 5, and further affect the anti-floating ability of the repaired anti-floating bolt to the immersed tube steel formwork. In this embodiment, a strengthening structure 6 can also be added. The strengthening structure 6 is used to strengthen the connection between the first sleeve 5 and the original sleeve 4, and can improve the pulling resistance of the repaired anti-floating bolt. The strengthening structure 6 can adopt a circular cross-section structure such as a strengthening rod or a reinforcing bar. The strengthening rod is such as round steel, and the reinforcing bar is such as a φ25 steel bar. The strengthening structure 6 is arranged vertically, and the side of the strengthening structure 6 is welded to the first sleeve 5 and the original sleeve 4. The first sleeve 5 and the original sleeve 4 are in contact or welded, which can facilitate the formation of a fixed connection relationship with the first sleeve 5 and the original sleeve 4 by welding, and make the connection process more convenient. Compared with the reinforcing bar, the strengthening structure 6 adopts a strengthening rod, and its side is smoother, which can be better welded to the first sleeve 5 and the original sleeve 4, and the welding quality is better. In this solution, the strengthening structure 6 can be one, and is arranged on one side of the first sleeve 5 in the transverse direction of the immersed tube steel formwork, and the strengthening structure 6 is in contact and welded with both the first sleeve 5 and the original sleeve 4. As Figure 2 shown, the strengthening structure 6 is preferably two. The two strengthening structures 6 are located on both sides of the first sleeve 5 in the transverse direction of the immersed tube steel formwork. There are more welding positions, so the number of welding points is increased. After welding, the pulling resistance of the first sleeve 5 is better, ensuring the tensile strength of the structure. And the welding of the strengthening structure 6 requires full welding, and the heights of the first sleeve 5 and the strengthening structure 6 should be lower than the height of the dry dock floor 11 to avoid affecting the prefabrication of the upper immersed tube. The length of the strengthening structure 6 is determined according to the length of the first sleeve 5, and can have as much welding with the first sleeve 5 as possible.

[0043] For the anti-floating bolt repair device for the immersed tube steel formwork described in this solution, the second sleeve 42 at the upper end of the anti-floating bolt is adjusted longitudinally along the immersed tube steel formwork, so that the first sleeve 5 connected to one side of the original sleeve 4 longitudinally along the immersed tube steel formwork and arranged vertically can replace the original sleeve 4 to be connected to the adjusted second sleeve 42, thereby forming the anti-floating of the immersed tube steel formwork. And the repaired anti-floating bolt can still be disassembled and assembled repeatedly through the threaded connection between the screw rod 41 and the first sleeve 5. It does not need to excavate the dry dock 1 to re-embed the sleeve at the lower end of the screw rod 41. Its structure is simple, the cost is low, the construction is more convenient, and it will not affect the quality of the dry dock 1.

[0044] Embodiment 2

[0045] This embodiment provides a method for repairing the anti-floating bolts of a immersed tube steel formwork, and uses the anti-floating bolt repair device for the immersed tube steel formwork described in Embodiment 1 to repair the anti-floating bolts, including the following repair steps:

[0046] S1. Connect a vertically arranged first sleeve 5 to one side of the original sleeve 4 in the longitudinal direction of the immersed tube steel formwork in the dry dock 1;

[0047] S2. Threadedly connect the first sleeve 5 and the second sleeve 42 on the immersed tube steel formwork through the screw 41 to form anti-floating for the immersed tube steel formwork, as Figure 1 shown;

[0048] Among them, before step S2, the second sleeve 42 can move along the longitudinal direction of the immersed tube steel formwork.

[0049] Before step S1, it is possible to measure and set out the line along the longitudinal direction of the immersed tube steel formwork, and the first sleeve 5 is arranged along the measured line to ensure that the first sleeve 5 and the original sleeve 4 are on the same straight line in the longitudinal direction of the immersed tube steel formwork, so as to ensure that the first sleeve 5 can be threadedly connected to the second sleeve 42 after adjusting the position along the longitudinal direction of the immersed tube steel formwork through the screw 41.

[0050] In this embodiment, in step S1, vertically arranged strengthening structures 6 can also be welded on both sides of the first sleeve 5 with respect to the transverse direction of the immersed tube steel formwork, so that the strengthening structures 6 are welded to the first sleeve 5 and the original sleeve 4, as Figure 1 shown. The first sleeve 5 and the strengthening structures 6 on both sides are in contact with and welded to the original sleeve 4, and the strengthening structures 6 on both sides are in contact with and fully welded to the first sleeve 5, which can improve the anti-pulling ability of the first sleeve 5.

[0051] In this embodiment, the original sleeve 4 and the first sleeve 5 have relatively large diameters, their welds are relatively deep, the welding difficulty is relatively large, and the welding quality is relatively poor. In order to improve the welding quality of the strengthening structure 6, it is appropriate to make the diameter of the strengthening structure 6 smaller than the diameter of the original sleeve 4 and the diameter of the strengthening structure 6 smaller than the diameter of the first sleeve 5.

[0052] And in step S1, the first sleeve 5 can be first placed close to the original sleeve 4 and on the same longitudinal straight line of the immersed tube steel formwork as the original sleeve 4, and then the first sleeve 5 is spot-welded to the original sleeve 4; then the strengthening structure 6 on one side of the immersed tube steel formwork in the transverse direction of the first sleeve 5 is placed close to the first sleeve 5 and the original sleeve 4, and then the contact positions of the strengthening structure 6 with the first sleeve 5 and the original sleeve 4 are fully welded; then the strengthening structure 6 on the other side of the immersed tube steel formwork in the transverse direction of the first sleeve 5 is placed close to the first sleeve 5 and the original sleeve 4, and then the contact positions of the strengthening structure 6 with the first sleeve 5 and the original sleeve 4 are fully welded to realize the connection between the original sleeve 4 and the first sleeve 5. That is: by using the strengthening structure 6 as the main anti-pulling capacity of the original sleeve 4 and the first sleeve 5, the first sleeve 5 and the original sleeve 4 are first spot-welded to form a positioning to ensure the accurate position of the first sleeve 5. On this basis, the strengthening structure 6 on one side is positioned and fully welded with the help of the first sleeve 5 and the original sleeve 4, which is convenient for the welding operation of the strengthening structure 6 on this side and ensures the welding quality; then the strengthening structure 6 on the other side is positioned and fully welded with the help of the first sleeve 5 and the original sleeve 4, which is convenient for the welding operation of the strengthening structure 6 on this side and ensures the welding quality. This construction method can use the strengthening structure 6 as the intermediate welding to be the main anti-pulling capacity of the original sleeve 4 and the first sleeve 5. The diameter of the strengthening structure 6 is smaller, and the welds between the strengthening structure 6 and the original sleeve 4 and the first sleeve 5 are shallower, which can reduce the welding difficulty and improve the welding quality; and the construction sequence can ensure more accurate positioning, more convenient welding operation and better welding quality, making the quality of the repaired anti-floating bolts better. The diameter of the strengthening structure 6 cannot be too small, otherwise it will also affect the welding and at the same time affect the anti-pulling capacity of the first sleeve 5. Based on being smaller than the first sleeve 5 and the original sleeve 4, it can be selected according to the actual situation.

[0053] As Figure 2 shown, the dry dock 1 has a pre-embedded hole 2, and the original sleeve 4 is in the pre-embedded hole 2 and lower than the dry dock floor 11. Because the original sleeve 4 has failed and cannot be connected to the screw 41 of the anti-floating bolt, the original sleeve 4 may have been deformed at this time, such as in an inclined state, which may interfere with the installation positions of the first sleeve 5 and the strengthening structure 6. In this embodiment, before step S1, an enlarged hole 3 intersecting with the pre-embedded hole 2 can also be opened on the side of the pre-embedded hole 2 at an angle θ of 20-40° in the transverse direction of the immersed tube steel formwork, providing an operating space for the welding of the first sleeve 5 and the strengthening structure 6. The enlarged hole 3 is communicated with the side of the pre-embedded hole 2, which can provide more space positions for the installation of the first sleeve 5 and the strengthening structure 6. At the same time, the central connection line between the enlarged hole 3 and the pre-embedded hole 2 forms an angular deviation of 20-40° compared with the transverse direction of the immersed tube steel formwork, which can expose the welding positions of the first sleeve 5, the strengthening structure 6 and the original sleeve 4 as much as possible from the side of the intersection of the enlarged hole 3 and the pre-embedded hole 2, making the subsequent welding operation more convenient and the welding effect better. For example: As Figure 2As shown, for the reaming hole 3, a diamond drill with a φ150 aperture is used to drill holes in the direction 30° south by west of the original hole, so as to provide sufficient working space for subsequent welding. And the reaming hole 3 can be carried out on one side of the original sleeve 4 in the transverse direction of the immersed tube steel formwork. Considering the thickness of the concrete floor of the dry dock 1, the drilling depth should be controlled within the range of 100 - 200 mm.

[0054] For the method for repairing the anti - floating bolts of the immersed tube steel formwork described in this embodiment, it is not necessary to excavate the dry dock 1 to re - embed the sleeve at the lower end of the screw rod 41. Its construction is more convenient, with high efficiency and low cost, and it will not affect the quality of the dry dock 1. It can make the function of the repaired anti - floating bolts consistent with that of the original anti - floating bolts, and can solve the repair problems in various situations such as corrosion, offset, blockage, and deformation of the original sleeve 4 at the lower end of the anti - floating bolts in the dry dock 1.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for repairing anti-floating bolts of immersed tube steel formwork, characterized in that: The invention comprises a first sleeve (5), the first sleeve (5) being located on one side of an original sleeve (4) of a dry dock (1) along the longitudinal direction of a steel template for a submerged tube, the first sleeve (5) being arranged vertically, the first sleeve (5) being connected to the original sleeve (4), the first sleeve (5) and the original sleeve (4) being located on the same straight line in the longitudinal direction of the steel template for a submerged tube, the first sleeve (5) being used to vertically connect a second sleeve (42) on the steel template for a submerged tube through a screw rod (41) to form an anti-floating function for the steel template for a submerged tube; and a reinforcing structure (6) being used to strengthen the connection between the first sleeve (5) and the original sleeve (4); the reinforcing structure (6) being a reinforcing rod, the reinforcing structure (6) being arranged vertically, the side surface of the reinforcing structure (6) being fully welded to the first sleeve (5) and the original sleeve (4), the first sleeve (5) and the original sleeve (4) being in contact with or welded to each other.

2. The anti-floating bolt repair device for immersed tube steel formwork according to claim 1 is characterized in that: There are two reinforcement structures (6), and the two reinforcement structures (6) are located on both sides of the first sleeve (5) in the transverse direction with respect to the immersed tube steel template.

3. The anti-floating bolt repair device for immersed tube steel formwork according to any one of claims 1-2 is characterized in that: The first sleeve (5) has the same size as the original sleeve (4).

4. A method for repairing anti-floating bolts of immersed tube steel formwork, characterized in that: The anti-floating bolt repair device for immersed tube steel formwork according to any one of claims 1 to 3 is used to repair the anti-floating bolt, including the following repair steps: S1, connecting a first sleeve (5) vertically arranged along one side of the longitudinal direction of the immersed tube steel template of the original sleeve (4) of the dry dock (1); S2, threading the first sleeve (5) and the second sleeve (42) on the immersed tube steel template through a screw rod (41) to form an anti-floating structure for the immersed tube steel template; Wherein, before step S2, the second sleeve (42) is capable of moving along the longitudinal direction of the immersed tube steel template.

5. The method for repairing anti-floating bolts of immersed tube steel formwork according to claim 4 is characterized in that: In step S1, a vertically arranged reinforcement structure (6) is welded to both sides of the first sleeve (5) in the transverse direction of the immersed tube steel template, so that the reinforcement structure (6) is welded to the first sleeve (5) and the original sleeve (4).

6. The method for repairing anti-floating bolts of immersed tube steel formwork according to claim 5 is characterized in that: The diameter of the reinforcing structure (6) is smaller than the diameter of the original sleeve (4), and the diameter of the reinforcing structure (6) is smaller than the diameter of the first sleeve (5); In step S1, the first sleeve (5) is firstly placed close to the original sleeve (4) and located on the same straight line as the original sleeve (4) in the longitudinal direction of the immersed tube steel template, and then the first sleeve (5) and the original sleeve (4) are spot welded; then the reinforcing structure (6) of the first sleeve (5) on one side of the lateral direction of the immersed tube steel template is placed close to the first sleeve (5) and the original sleeve (4), and then the reinforcing structure (6) is fully welded to the contact position of the first sleeve (5) and the original sleeve (4); then the reinforcing structure (6) of the first sleeve (5) on the other side of the lateral direction of the immersed tube steel template is placed close to the first sleeve (5) and the original sleeve (4), and then the reinforcing structure (6) is fully welded to the contact position of the first sleeve (5) and the original sleeve (4) to achieve the connection between the original sleeve (4) and the first sleeve (5).

7. The method for repairing anti-floating bolts of immersed tube steel formwork according to claim 6 is characterized in that: The dry dock (1) is provided with a pre-buried hole (2), and the original sleeve (4) is in the pre-buried hole (2); Before step S1, an expansion hole (3) intersecting the embedded hole (2) is provided on the side of the embedded hole (2) at an angle of 20 to 40 degrees with respect to the immersed tube steel template, so as to provide an operating space for welding the first sleeve (5) and the reinforcement structure (6).

8. The method for repairing anti-floating bolts for immersed tube steel formwork according to any one of claims 4 to 7, characterized in that: Before step S1, measurement and laying out are performed along the longitudinal direction of the immersed tube steel template to determine that the first sleeve (5) and the original sleeve (4) are located on the same straight line in the longitudinal direction of the immersed tube steel template.

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