Internal Fine Tuning Device and System for Submarine Immersed Tube Alignment

Abstract

The present invention relates to the technical field of immersed tunnel construction, and in particular to an internal fine-tuning device and system for submarine immersed tube alignment. It includes a combined cavity formed by a first immersed tube and a second immersed tube, and is provided with a vertical pushing jack assembly and a horizontal pushing jack assembly. A vertical jack limiting component is provided on the inner side wall of the immersed tube. The vertical pushing jack assembly is composed of multiple integrally-mounted jacks vertically installed, and the horizontal pushing jack assembly is composed of multiple integrally-mounted jacks horizontally installed. They are placed on the track in the combined cavity. The integrally-mounted jacks adopt a quick splicing method and use a dual closed-loop control of position and force to improve the deviation correction and positioning accuracy. This internal fine-tuning device for submarine immersed tube alignment solves the problems existing in the existing methods for adjusting the alignment deviation of submarine immersed tubes, such as the required thrust being relatively large, the reaction force point being difficult to find, the space being narrow, and the installation being inconvenient. It also solves the technical problems such as high construction difficulty, low construction efficiency, and low deviation correction and positioning accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of immersed tunnel construction, and particularly to an internal fine adjustment device and system for underwater immersed tube alignment. Background Art

[0002] After the immersed tube of the underwater tunnel is initially hydraulically pressed and installed, there may be deviations in its axial direction, and adjustments need to be made for these deviations. Traditional methods include external adjustment method and internal adjustment method. The external adjustment method is to place the adjustment equipment outside the immersed tube and correct the deviation by adjusting the tail end of the immersed tube. Using the external adjustment method requires installing large equipment underwater, with an operating environment of 40m underwater, poor underwater visibility, and high cost of the entire construction equipment. The internal adjustment method is to install large-tonnage jacks between two immersed tubes and make the immersed tube produce a tail swing action by the pushing of the jacks. Its advantage is that dry construction can be carried out inside the immersed tube.

[0003] Although the adjustment method of installing large-tonnage jacks between two immersed tubes and making the immersed tube produce a tail swing action by the pushing of the jacks can carry out dry construction inside the immersed tube, there are problems such as a large required thrust, difficulty in finding the reaction point, narrow space, inconvenient installation, etc. At the same time, there are also problems such as high construction difficulty, low construction efficiency, and low deviation correction and positioning accuracy. Summary of the Invention

[0004] In view of the above deficiencies in the existing methods for adjusting the alignment deviation of underwater immersed tubes, the present invention provides an internal fine adjustment device and system for underwater immersed tube alignment. The internal fine adjustment system for underwater immersed tube alignment solves the technical problems existing in the existing methods for adjusting the alignment deviation of underwater immersed tubes, such as large required thrust, difficulty in finding the reaction point, narrow space, inconvenient installation, etc. At the same time, it also solves the technical problems of high construction difficulty, low construction efficiency, and low deviation correction and positioning accuracy existing therein.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An internal fine adjustment device for underwater immersed tube alignment, the underwater immersed tube includes a first immersed tube and a second immersed tube, the first immersed tube and the second immersed tube form a joint cavity, and the internal fine adjustment device includes: a vertical pushing jack assembly and a horizontal pushing jack assembly. A first vertical jack limiting rod assembly is provided on the inner side wall of the first immersed tube, and a second vertical jack limiting assembly is provided on the inner side wall of the second immersed tube. The vertical pushing jack assembly is composed of a plurality of integrally installed jacks vertically, and both ends of the integrally installed jacks vertically can be respectively connected to the first vertical jack limiting rod assembly and the second vertical jack limiting assembly; the horizontal pushing jack assembly is composed of a plurality of integrally installed jacks horizontally and is placed on the track in the joint cavity.

[0007] Furthermore, the vertical pushing jack assembly includes five to seven integral jacks, the horizontal pushing jack assembly includes three integral jacks, and the integral jacks use standard aluminum profiles as the frame.

[0008] Furthermore, the internal fine-tuning device further includes a hoist for hoisting the integral jack and a hoist lifting assembly.

[0009] Furthermore, the hoist lifting assembly is installed at the reserved bolt holes of the shear keys of the second immersed tube through bolts.

[0010] Furthermore, a left ramp horizontal joint assembly is provided at the bottom of the first immersed tube, and a right ramp horizontal joint assembly is provided at the bottom of the second immersed tube.

[0011] Furthermore, a manhole door for transporting the vertical pushing jack assembly and the horizontal pushing jack assembly is provided on the combined cavity wall formed by the first immersed tube and the second immersed tube.

[0012] An internal fine-tuning system for submarine immersed tube alignment includes the internal fine-tuning device for submarine immersed tube alignment as described above. The internal fine-tuning system for submarine immersed tube alignment further includes an oil pump, an oil pipe, a signal line and a flow dividing block. The vertical pushing jack assembly and the horizontal pushing jack assembly are connected in series with the oil pump through the oil pipe, the signal line and the flow dividing block.

[0013] Furthermore, the internal fine-tuning system for submarine immersed tube alignment is also provided with a displacement sensor and a pressure sensor, and a penetration hole is also connected to the oil pump.

[0014] A working method of an internal fine-tuning system for submarine immersed tube alignment is as follows: After the vertical pushing jack assembly and the horizontal pushing jack assembly are installed in place, oil is supplied to them through an oil pump, and the oil pump is controlled through a console. The vertical pushing jack assembly and the horizontal pushing jack assembly are connected in series with the oil pump through the oil pipe, the signal line and the flow dividing block. The displacement sensor and the pressure sensor realize the control of the extension position and the extension force of all integral jacks.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides an internal fine-tuning system for submarine immersed tube alignment. The internal fine-tuning system for submarine immersed tube alignment is integrally arranged in the combined cavity, and dry construction is adopted, effectively reducing the difficulty of underwater construction. At the same time, double closed-loop control is adopted for position and force, improving the deviation correction and positioning accuracy.

[0017] 2. The internal fine-tuning device for the alignment of the submarine immersed tube provided by the present invention takes into account the force characteristics of the immersed tube and, according to the convenience of on-site installation, the fine-tuning cylinders of the immersed tube are arranged in an L shape, and the clearance of the joint cavity after installation can be effectively adjusted through the stroke of the cylinders.

[0018] 3. The internal fine-tuning device for the alignment of the submarine immersed tube provided by the present invention is composed of an integrated jack to form a vertical pushing jack and a horizontal pushing jack. The integrated jack adopts an aluminum structure, so that the weight can be reduced by about half under the condition of meeting the same tonnage. The use of the integrated jack realizes rapid assembly and improves the construction efficiency.

[0019] 4. The bottom adjustment track of the internal fine-tuning system for the alignment of the submarine immersed tube provided by the present invention is made of standard aluminum profile structure and has a function of rapid splicing, which can easily realize on-site manual handling and splicing. The overall length is configured according to the distance from the side to the manhole door. A elevation adjustment bracket is configured at the bottom to adapt to the use under different internal elevations of the immersed tube. When the adjustment height is not enough, a large stroke adjustment can also be carried out by padding steel plates at the bottom. In addition, the system adopts a foldable gantry crane without disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural layout diagram of the internal fine-tuning system for the alignment of the submarine immersed tube provided by the embodiment of the present invention;

[0021] Figure 2 is the exploded view of the internal fine-tuning device for the alignment of the submarine immersed tube provided by the embodiment of the present invention Figure 1 ;

[0022] Figure 3 is the exploded view of the internal fine-tuning device for the alignment of the submarine immersed tube provided by the embodiment of the present invention Figure 2 ;

[0023] Figure 4 is the elevation view of the L-shaped arrangement of the internal fine-tuning device for the alignment of the submarine immersed tube provided by the embodiment of the present invention;

[0024] Figure 5 is the side view of the integrated cavity arrangement of the internal fine-tuning device for the alignment of the submarine immersed tube provided by the embodiment of the present invention;

[0025] Figure 6 is the schematic diagram of the control process of the internal fine-tuning system for the alignment of the submarine immersed tube provided by the embodiment of the present invention;

[0026] 1-1 - First immersed tube, 1-2 - Second immersed tube, 2 - Vertical pushing jack assembly, 3 - Horizontal pushing jack assembly, 4-1 - First vertical jack limit rod assembly, 4-2 - Second vertical jack limit rod assembly, 5 - Hoisting winch mounting assembly, 6-1 - Left ramp horizontal joint assembly, 6-2 - Right ramp horizontal joint assembly, 7 - Oil pump, 8 - Penetration hole, 9 - Oil pipe and signal wire, 10 - Flow dividing block, 11 - Displacement sensor, 12 - Manhole door. Detailed implementation mode

[0027] Next, the present invention will be specifically described through exemplary implementation modes. However, it should be understood that, without further elaboration, the elements, structures, and features in one implementation mode can also be beneficially combined with those in other implementation modes.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "bottom", "inner", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to introduce the internal fine-tuning device for submarine immersed tube alignment and the system including the same provided by the embodiments of the present invention more clearly and in detail, the following will be described in combination with specific embodiments.

[0031] Embodiment 1

[0032] As Figures 1-5As shown in the figure, an internal fine-tuning device for the alignment of submarine immersed tubes. The submarine immersed tubes include a first immersed tube 1-1 and a second immersed tube 1-2. The first immersed tube 1-1 and the second immersed tube 1-2 form a joint cavity. The internal fine-tuning device includes: a vertical pushing jack assembly 2 and a horizontal pushing jack assembly 3. A first vertical jack limiting rod assembly 4-1 is provided on the inner side wall of the first immersed tube 1-1, and a second vertical jack limiting assembly 4-2 is provided on the inner side wall of the second immersed tube 1-2. The vertical pushing jack assembly 2 is composed of a plurality of vertically installed integral jacks. The two ends of the vertically installed integral jack can be respectively connected to the first vertical jack limiting rod assembly 4-1 and the second vertical jack limiting assembly 4-2; the horizontal pushing jack assembly 3 is composed of a plurality of horizontally installed integral jacks and is placed on the track in the joint cavity; the vertical pushing jack assembly 2 includes five to seven integral jacks, which can be quickly spliced vertically, with high construction efficiency. During the vertical splicing process, for each additional set of integral jacks, it is connected to the first vertical jack limiting rod assembly 4-1 and the second vertical jack limiting assembly 4-2, and then connected to the immersed tube, which can effectively prevent the vertical pushing jack assembly 2 from tipping over. In this embodiment, the overall adjustment device is in the joint cavity for dry construction, effectively reducing the difficulty of underwater construction.

[0033] The horizontal pushing jack assembly 3 includes three integral jacks. The composition quantity of the vertical pushing jack assembly 2 and the horizontal pushing jack assembly 3 is determined according to the actual jacking force. The integral jack uses standard aluminum profiles as the frame, and the weight is reduced by about half under the condition of meeting the same tonnage.

[0034] In this embodiment, the internal fine-tuning device further includes a hoist for hoisting the integral jack and a hoist lifting assembly 5. The hoist lifting assembly 5 is installed at the shear key reserved bolt holes of the second immersed tube 1-2 through bolts; the integral jack is hoisted by a hoist. The upper lifting point of the hoist is hung on the hoist lifting assembly 5, and the hoist lifting assembly 5 is connected to the immersed tube through bolts, and its installation position is the shear key reserved bolt holes of the immersed tube.

[0035] A left ramp horizontal joint assembly 6-1 is provided at the bottom of the first immersed tube 1-1, and a right ramp horizontal joint assembly 6-2 is provided at the bottom of the second immersed tube 1-2; a manhole door 12 for transporting the vertical pushing jack assembly 2 and the horizontal pushing jack assembly 3 is opened on the joint cavity wall formed by the first immersed tube 1-1 and the second immersed tube 1-2. The vertical pushing jack assembly 2 and the horizontal pushing jack assembly 3 are transported from inside the immersed tube to the joint cavity through the manhole door 12, and their transportation is carried out by a portable gantry crane for through-hatch transfer.

[0036] This embodiment also provides an internal fine-tuning system for submarine immersed tube alignment, including the above-mentioned internal fine-tuning device for submarine immersed tube alignment. The internal fine-tuning system for submarine immersed tube alignment further includes an oil pump 7, oil pipes, signal lines 9 and a flow dividing block 10. The vertical pushing jack assembly 2 and the horizontal pushing jack assembly 3 are connected in series with the oil pump 7 through the oil pipes, signal lines 9 and the flow dividing block 10. The internal fine-tuning system for submarine immersed tube alignment is also provided with a displacement sensor 11 and a pressure sensor, and a cable penetration hole 8 is also connected to the oil pump 7.

[0037] The internal fine-tuning system for submarine immersed tube alignment provided in this embodiment includes an integral oil cylinder, a transverse support inside the immersed tube, a transport vehicle inside the immersed tube, a portable gantry crane, a pump station and a control system as a whole. The integral oil cylinder adopts a design structure of quick splicing and an L-shaped layout; the transverse support inside the immersed tube adopts a quick splicing method of aluminum profiles to meet the transportation and quick splicing in a narrow on-site space; the portable gantry crane adopts an aluminum quick splicing method, with a light weight and convenient lapping; the oil pump station adopts a super high pressure 70Mpa system pressure, with a small volume and a light equipment weight; the control system adopts a closed-loop control mode with double feedback of displacement and force.

[0038] As Figure 6 , this embodiment also provides a working method for the internal fine-tuning system for submarine immersed tube alignment. After the vertical pushing jack assembly 2 and the horizontal pushing jack assembly 3 are installed in place, the oil pump 7 supplies oil to them, and the oil pump 7 is controlled through a console. The vertical pushing jack assembly 2 and the horizontal pushing jack assembly 3 are connected in series with the oil pump 7 through the oil pipes, signal lines 9 and the flow dividing block 10. The displacement sensor 11 and the pressure sensor realize the control of the extension position and extension force of all integral jacks, and adopt a double closed-loop control of position and force, improving the deviation correction and positioning accuracy.

[0039] This embodiment provides an internal fine-tuning system for the alignment of submarine immersed tubes. The internal fine-tuning system includes an integral oil cylinder, a transverse support inside the immersed tube, a transport vehicle inside the immersed tube, a portable gantry crane, a pump station, and a control system. Considering the stress characteristics of the immersed tube and based on the convenience of on-site installation, the fine-tuning oil cylinders of the immersed tube are arranged in an L shape. Since the size of the joint cavity of the immersed tube is 1300 mm and considering that in addition to placing the oil cylinders, the gap needs to be filled, in this embodiment, the stroke of the oil cylinder is set to 150 mm. This increases the height of the oil cylinder body, which can effectively fill part of the space size. At the same time, the oil cylinder has a longer stroke, and the joint cavity gap after installation can be effectively adjusted through the oil cylinder stroke; in the internal fine-tuning system for the alignment of submarine immersed tubes provided in this embodiment, the bottom adjustment track is made of a standard aluminum profile structure, has a quick splicing function, can be easily manually transported and spliced on site, the overall length can be configured according to the distance from the side to the manhole door, and elevation adjustment feet are provided at the bottom to be used in the case of different elevations inside the immersed tube. When the adjustment height is insufficient, a large-stroke adjustment can be carried out by padding steel plates at the bottom. There is also a gantry crane that can be folded for transportation and does not need to be disassembled, which is used to transport the hydraulic jack assembly, track, etc. in the inspection hole across the door to the joint cavity.

Claims

1. An internal fine-tuning device for submarine immersed tube alignment. The submarine immersed tube includes a first immersed tube (1-1) and a second immersed tube (1-2). The first immersed tube (1-1) and the second immersed tube (1-2) form a joint cavity, and it is characterized in that: The internal fine-tuning device includes: a vertical pushing jack assembly (2) and a horizontal pushing jack assembly (3). A first vertical jack limiting rod assembly (4-1) is provided on the inner side wall of the first immersed tube (1-1), and a second vertical jack limiting assembly (4-2) is provided on the inner side wall of the second immersed tube (1-2). The vertical pushing jack assembly (2) is composed of multiple integrally-mounted jacks vertically installed, and both ends of the vertically-installed integrally-mounted jacks are respectively connected to the first vertical jack limiting rod assembly (4-1) and the second vertical jack limiting assembly (4-2); The horizontal pushing jack assembly (3) is arranged near the bottom of the joint cavity. The horizontal pushing jack assembly (3) is composed of multiple integrally-mounted jacks horizontally installed and is placed on the track in the joint cavity. A manhole door (12) for transporting the vertical pushing jack assembly (2) and the horizontal pushing jack assembly (3) is provided on the joint cavity wall formed by the first immersed tube (1-1) and the second immersed tube (1-2). The internal fine-tuning device further includes a portable gantry crane for transporting the vertical pushing jack assembly (2) and the horizontal pushing jack assembly (3) from the inside of the second immersed tube (1-2) to between the joint cavities through the manhole door (12); The internal fine-tuning device further includes a hoist for hoisting the integrally-mounted jack and a hoist lifting assembly (5). The hoist lifting assembly (5) is installed at the shear key reserved bolt holes of the second immersed tube (1-2) by bolts, and the upper suspension point of the hoist is hung on the hoist lifting assembly (5).

2. The internal fine-tuning device for submarine immersed tube alignment according to claim 1, characterized in that: The vertical pushing jack assembly (2) includes five to seven integrally-mounted jacks, and the horizontal pushing jack assembly (3) includes three integrally-mounted jacks. The integrally-mounted jacks use standard aluminum profiles as the frame.

3. The internal fine-tuning device for submarine immersed tube alignment according to claim 1, characterized in that: A left ramp horizontal joint assembly (6-1) is provided at the bottom of the first immersed tube (1-1), and a right ramp horizontal joint assembly (6-2) is provided at the bottom of the second immersed tube (1-2).

4. An internal fine-tuning system for the alignment of submarine immersed tubes, characterized in that: It includes the internal fine-tuning device for submarine immersed tube alignment as described in any one of claims 1-3. The internal fine-tuning system for submarine immersed tube alignment further includes an oil pump (7), oil pipes, signal lines (9) and a flow dividing block (10). The vertical pushing jack assembly (2) and the horizontal pushing jack assembly (3) are connected in series with the oil pump (7) through the oil pipes, signal lines (9) and the flow dividing block (10).

5. The internal fine-tuning system for submarine immersed tube alignment according to claim 4, characterized in that: The internal fine-tuning system for submarine immersed tube alignment is also provided with a displacement sensor (11) and a pressure sensor, and a penetration hole (8) is also connected to the oil pump (7).

6. A working method of an internal fine-tuning system for underwater immersed tube alignment, characterized in that: Applied to the internal fine-tuning system for the alignment of the submarine immersed tube described in claim 5, the steps are as follows: After the vertical pushing jack assembly (2) and the horizontal pushing jack assembly (3) are installed in place, oil is supplied to them through the oil pump (7), and the oil pump (7) is controlled through the console. The vertical pushing jack assembly (2) and the horizontal pushing jack assembly (3) are connected in series with the oil pump (7) through oil pipes, signal lines (9) and a manifold block (10). The displacement sensor (11) and the pressure sensor are used to control the extension position and extension force of all integral jacks.

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