Jacking device for seabed vertical jacking construction

Abstract

The jacking device comprises a top pipe joint, a plurality of jacking pipe joints, a jacking assembly, a jacking rack and a retaining supporting component, the jacking assembly is used for vertically jacking the top pipe joint or the jacking pipe joints, and the upper surface of the jacking rack is close to the bottom of a jacking pipe cover of a pipe piece structure; the retaining supporting component is located on the upper surface of the jacking rack and used for temporarily supporting the lower pipe opening of the jacking pipe joint which is jacked in place, so that the jacking assembly retreats to the initial position to jack the next jacking pipe joint, automatic falling of the vertical pipe under the action of self weight and jacking section soil pressure can be effectively prevented, and construction safety and reliability are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of submarine pipeline engineering, and in particular to a jacking device for submarine vertical jacking construction. Background Art

[0002] Submarine water intake tunnels are one of the important infrastructures in special geographical areas such as coastal areas and islands. Traditional water intake methods such as ground drilling and pumping stations have high construction and maintenance costs and are difficult to meet the water resource needs of these areas. With the advancement of science and technology, submarine shield water intake tunnels have gradually gained attention as a new water intake method. This technology can not only improve water intake efficiency, but also reduce the impact on the environment, and has high safety and environmental protection. Especially in large-scale municipal projects and water supply and drainage projects, submarine shield water intake tunnels are increasingly widely used and have become an effective way to solve water resource problems in coastal areas.

[0003] In the construction process of submarine water intake tunnel, vertical jacking technology is widely used. This technology uses hydraulic devices to push out the jacking cover at the jacking port of the pipe segment structure, and then gradually jacks it up to the designed height, thereby realizing the connection between the inside and outside of the tunnel. However, during the vertical jacking construction process, when the jacking cylinder reaches the maximum jacking stroke, the riser will automatically fall under the action of its own weight and the top section soil pressure. This problem seriously affects the safety and reliability of the construction, so it needs further improvement. Summary of the invention

[0004] In order to improve the construction safety of vertical jacking construction, the present application provides a jacking device for seabed vertical jacking construction.

[0005] The present application provides a subsea vertical jacking construction jacking device that adopts the following technical solution: A subsea vertical jacking construction jacking device, comprising: A top pipe joint, which is used to connect with the bottom of the top pipe cover of the pipe segment structure; A plurality of jacking pipe sections, wherein the jacking pipe sections are used to extend below the head pipe section, adjacent jacking pipe sections are connected by flanges, and the outer peripheral surface of the jacking pipe section protrudes from the outer peripheral surface of the flange; A lifting assembly, which is used to vertically lift a head pipe section or a lifting pipe section. When installing a head pipe section, the head pipe section is lifted vertically to the bottom of the jacking cover by the lifting assembly and connected with the jacking cover. When extending the bottom of the head pipe section, the lifting assembly retreats, and the lifting pipe section is lifted vertically to the bottom of the head pipe section by the lifting assembly and connected with the head pipe section. When extending the bottom of the lifting pipe section, the lifting pipe section is lifted vertically to the bottom of the lifting pipe section that has been in place by the lifting assembly and the connection operation between adjacent lifting pipe sections is completed. A jacking frame and a stop-retraction support member, wherein the upper surface of the jacking frame is close to the bottom of the jacking cover of the pipe segment structure, and the stop-retraction support member is located on the upper surface of the jacking frame and is used to temporarily support the lower pipe mouth of the jacking pipe segment that has been jacked into place, so that the jacking assembly can retreat to the initial position to jack up the next jacking pipe segment.

[0006] By adopting the above technical solution, the jacking assembly can be vertically lifted to the bottom of the jacking cover, and the connection between the top pipe section and the bottom of the jacking cover can be successfully completed. When the top pipe section is extended, the jacking assembly retreats, and the new jacking pipe section is vertically lifted to the bottom of the top pipe section through the jacking assembly and the connection is completed. Similarly, when the bottom of the jacking pipe section that has been jacked in place continues to be extended, the jacking assembly retreats again, and the new jacking pipe section is vertically lifted to the bottom of the jacking pipe section that has been jacked in place through the jacking assembly, and the connection operation between adjacent jacking pipe sections is completed. The whole process ensures the precise docking and stable installation of each component, effectively avoids the problem of the riser falling due to the self-weight of the riser caused by the retreat of the jacking assembly, and significantly improves the safety and reliability of the construction. At the same time, the anti-retreat support component temporarily supports the lower pipe mouth of the jacking pipe section that has been jacked in place to prevent it from accidentally falling off during the retreat of the jacking assembly, further enhancing the stability of the overall structure, which is conducive to improving the construction safety of vertical jacking construction.

[0007] Preferably, the anti-retreat support member is two longitudinally arranged anti-retreat shoulder pole beams, and the anti-retreat shoulder pole beams are longitudinally erected on the upper surface of the jacking frame.

[0008] By adopting the above technical solution, the two longitudinally arranged anti-retraction shoulder beams can effectively support the lower pipe opening of the jacking pipe section that has been jacked in place, preventing it from falling due to its own weight and the pressure of the top soil when the jacking assembly is retracted. At the same time, the design of the anti-retraction shoulder beam makes the entire device more stable and safe. During the vertical jacking construction process, even if a large external load is encountered, the stability of the jacking pipe section can be guaranteed, reducing the probability of accidents.

[0009] Preferably, a plurality of longitudinal cylinders are provided on both sides of the jacking frame, and the longitudinal cylinders are used to drive the anti-retraction shoulder pole beam to slide longitudinally. When vertical jacking construction is performed, the longitudinal cylinders drive the anti-retraction shoulder pole beam to move away from the jacking pipe section. When each jacking pipe section has been jacked into place, the longitudinal cylinders drive the anti-retraction shoulder pole beam to move below the lower pipe opening of the jacking pipe section that has been jacked into place.

[0010] By adopting the above technical solution, the longitudinal cylinders arranged on both sides of the jacking frame can accurately control the position change of the anti-retraction shoulder beam. When performing vertical jacking construction, the longitudinal cylinder drives the anti-retraction shoulder beam to move away from the jacking pipe section, ensuring that the jacking assembly has enough space for jacking operations and avoiding the occurrence of interference. When each jacking pipe section has been jacked into place, the longitudinal cylinder drives the anti-retraction shoulder beam to move below the lower pipe opening of the jacking pipe section that has been jacked into place, temporarily supporting the lower pipe opening of the jacking pipe section to prevent the jacking pipe section from automatically falling due to its own weight or soil pressure, thereby improving the safety and stability of the construction process.

[0011] Preferably, the jacking frame includes a support arranged at the bottom of the pipe segment structure, a plurality of columns vertically arranged on the surface of the support, and a support frame horizontally arranged on the top of the plurality of columns. The middle portion of the support frame can be used for the head pipe segment and the jacking pipe segment to pass vertically. When the jacking pipe segment is jacked into place, the anti-retraction support member is horizontally arranged on both sides of the lower pipe opening of the jacking pipe segment that has been jacked into place. By retracting the jacking assembly, the lower pipe opening of the jacking pipe segment that has been jacked into place is temporarily placed on the anti-retraction support member.

[0012] By adopting the above technical solution, the design of the jacking frame enables the head pipe section and the jacking pipe section to smoothly pass through the middle of the support frame in the vertical direction, ensuring the stability and safety of the jacking process. At the same time, the anti-retraction support components are horizontally erected on both sides of the lower pipe opening of the jacking pipe section that has been jacked in place, which can effectively prevent the jacking pipe section from falling due to its own weight or soil pressure when the jacking assembly retreats, thereby improving the safety and reliability of the construction.

[0013] Preferably, the bottom of the jacking frame is filled with a concrete structure.

[0014] By adopting the above technical solution, the bottom of the support is filled with a concrete structure, which enhances the stability and bearing capacity of the entire jacking device, effectively prevents settlement problems caused by unstable soil during the jacking process, and improves the safety and reliability of construction.

[0015] Preferably, the jacking assembly includes a plurality of vertical jacks and a horizontal frame horizontally arranged on top of the plurality of vertical jacks, the plurality of vertical jacks are disposed at four corners of the horizontal frame, and the horizontal frame is used for carrying a jacking pipe section or a head pipe section.

[0016] By adopting the above technical solution, the vertical jacks are distributed at the four corners of the horizontal frame, ensuring that the lifting force is evenly distributed on the lifting pipe section or the head pipe section, avoiding deformation or damage caused by uneven force. The horizontal frame, as a bearing platform, can stably support the lifting pipe section or the head pipe section, reduce vibration and shaking, and improve construction accuracy and efficiency. The overall structure is simple and reliable, easy to install and maintain, reduces equipment failure rate, and extends service life. The combined design of the vertical jack and the horizontal frame can effectively improve the stability and safety during the lifting process.

[0017] Preferably, a plurality of the vertical jacks are supported on a support.

[0018] By adopting the above technical solution, the vertical jack is supported on the support, which can ensure the stability during the lifting process, avoid the shaking or tilting of the equipment due to insufficient support points, and improve the overall safety of the lifting device. At the same time, the vertical jack supported on the support can better withstand the lifting force, extend the service life of the equipment, and reduce maintenance costs.

[0019] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the jacking assembly and the anti-retraction support component, the jacking pipe section that has been jacked in place can be temporarily supported after the installation of the jacking pipe section is completed to prevent it from automatically falling due to its own weight and the pressure of the top section soil. Specifically, when each jacking pipe section is jacked into place, the longitudinal cylinder drives the anti-retraction shoulder beam to move to the lower pipe mouth of the jacking pipe section that has been jacked in place to temporarily support it, ensuring that the jacking assembly returns to the initial position for the jacking operation of the next jacking pipe section, thereby significantly improving the safety and reliability of the construction; 2. The flange connection makes the connection between the jacking pipe sections more stable and reliable, which is convenient for quick assembly and disassembly, and improves the construction efficiency. The flange connection not only ensures the close fit between the jacking pipe sections, but also forms a concave shape between adjacent jacking pipe sections, which is convenient for cooperating with the stop support member to provide a force point, which is conducive to the smooth progress of vertical jacking construction; 3. The design of the vertical jack and horizontal frame can evenly distribute the lifting force, ensure a smooth lifting process, and avoid deformation or damage caused by uneven local force. The vertical jacks are placed at the four corners of the horizontal frame, and the horizontal frame carries the lifting pipe section or the head pipe section to ensure that each lifting point can obtain balanced support, so that the entire lifting device remains stable during the working process, improving the construction quality and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a jacking device for seabed vertical jacking construction according to an embodiment of the present application.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. Lifting frame; 11. Support; 12. Column; 13. Support frame; 2. Lifting assembly; 21. Vertical jack; 22. Horizontal frame; 3. Lifting pipe section; 4. Head pipe section; 5. Jacking pipe cover; 6. Flange; 7. Segment structure; 8. Stop support member; 9. Concrete structure. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 This application is described in further detail.

[0023] The jacking device for subsea vertical jacking construction provided in the embodiment of the present application includes a top pipe segment 4, a plurality of jacking pipe segments 3, a jacking assembly 2, a jacking frame 1, and a stop-retract support member 8, wherein the jacking assembly 2 is used to vertically jack up the top pipe segment 4 or the jacking pipe segment 3, the upper surface of the jacking frame 1 is close to the bottom of the jacking cover 5 of the pipe segment structure 7, and the stop-retract support member 8 is located on the upper surface of the jacking frame 1 and is used to temporarily support the lower pipe mouth of the jacking pipe segment 3 that has been jacked in place, so that the jacking assembly 2 retreats to the initial position to jack up the next jacking pipe segment 3. Through such a design, the automatic falling of the riser under the action of its own weight and the soil pressure of the top section can be effectively prevented, ensuring the safety and reliability of the construction.

[0024] Specifically, the top pipe segment 4 includes a top pipe cover 5 interface, a reinforcing rib plate and a sealing ring. The top pipe segment 4 is made of high-strength alloy steel and has good pressure resistance and corrosion resistance. The reinforcing rib plate is welded to the outer wall of the top pipe cover 5 interface to enhance rigidity and avoid deformation during the jacking process. The sealing ring is embedded in the end groove of the top pipe cover 5 interface to ensure the sealing performance when the top pipe segment 4 is connected to the top pipe cover 5 to prevent seawater from infiltrating. The top pipe segment 4 can also be made of stainless steel or other anti-corrosion materials to adapt to the environmental conditions of different sea areas. In addition, the interface between the top pipe segment 4 and the top pipe cover 5 is filled to keep the connection between the top pipe segment 4 and the top pipe cover 5 smooth to reduce the wear of the sealing ring at the jacking port of the pipe segment structure 7.

[0025] In this embodiment, the lifting pipe section 3 is a rectangular tube. Flanges 6 are fixed at both ends of the lifting pipe section 3 for connecting with other lifting pipe sections 3 or head pipe sections 4. The flange 6 is processed with high precision to ensure the tightness and stability of the connection. The casing is the main load-bearing component of the lifting pipe section 3, which is made of high-strength steel and has spiral reinforcing ribs inside to increase its bending resistance. The guide rod is installed inside the casing to guide the lifting process along the lifting direction to reduce the risk of deflection. The lifting pipe section 3 can also choose carbon fiber composite materials as an alternative material to reduce weight while maintaining sufficient strength. It should be emphasized that adjacent lifting pipe sections 3 are connected by flanges 6, and the outer peripheral surface of the lifting pipe section 3 is protruding from the outer peripheral surface of the flange 6. The flange 6 forms a concave shape between adjacent lifting pipe sections 3, which is convenient for cooperating with the stop support member 8 to provide a force application point, which is conducive to the smooth progress of vertical lifting construction.

[0026] The jacking assembly 2 includes a vertical jack 21 and a horizontal frame 22. The vertical jack 21 is installed on the support 11. The number can be adjusted according to actual needs. Generally, there are four vertical jacks 21, which are distributed at the four corners of the horizontal frame 22 to ensure the balance of the jacking process. The vertical jack 21 can choose a hydraulic jack or an electric jack. The former is suitable for large-tonnage jacking operations, while the latter is more convenient for precise control. The horizontal frame 22 is made of high-strength aluminum alloy, which is lightweight and durable. The middle opening is for the jacking pipe section 3 to pass through. The horizontal frame 22 can be fastened to the top of the vertical jack 21 by bolts, which is convenient for disassembly and maintenance.

[0027] The jacking frame 1 includes a support 11, a column 12 and a support frame 13. The support 11 is installed at the bottom of the segment structure 7, and the bottom is filled with a concrete structure 9 to enhance the overall stability. The column 12 is vertically arranged on the surface of the support 11, and the height is determined according to the jacking height, usually ranging from a few meters to more than ten meters. The support frame 13 is horizontally arranged on the top of the column 12 to form a stable plane for the head pipe section 4 and the jacking pipe section 3 to pass vertically. Sufficient space is left in the middle of the support frame 13 to allow the jacking pipe section 3 to rise smoothly. In order to improve the seismic performance, a shock-absorbing pad can be added between the support 11 and the column 12 to absorb the energy of seismic waves.

[0028] The anti-retreat support member 8 is two longitudinally arranged anti-retreat shoulder beams, which are longitudinally mounted on the upper surface of the jacking frame 1. The anti-retreat shoulder beams are made of high-strength steel plates, and the surface is rust-proofed to ensure that they will not rust during long-term use. The length of the anti-retreat shoulder beam should be slightly longer than the diameter of the jacking pipe section 3 so that it can completely cover the lower pipe opening of the jacking pipe section 3. The two ends of the anti-retreat shoulder beam are fixed to the jacking frame 1 by pins, which is convenient for quick disassembly and replacement. When the jacking pipe section 3 is lifted into place, the anti-retreat shoulder beam can be quickly moved to the bottom of the lower pipe opening of the jacking pipe section 3 to provide temporary support to prevent the jacking pipe section 3 from falling due to its own weight.

[0029] In addition, a plurality of longitudinal cylinders are arranged on both sides of the jacking frame 1, and the longitudinal cylinders are used to drive the anti-retraction shoulder pole beam to slide longitudinally. When vertical jacking construction is performed, the longitudinal cylinder drives the anti-retraction shoulder pole beam to move away from the jacking pipe section 3. When each jacking pipe section 3 is jacked in place, the longitudinal cylinder drives the anti-retraction shoulder pole beam to move below the lower pipe opening of the jacking pipe section 3 that has been jacked in place. In this way, automatic control is realized, manual intervention is reduced, and construction efficiency and safety are further improved.

[0030] Specifically, the longitudinal cylinders are installed on both sides of the jacking frame 1, and each cylinder is equipped with a sensor and a controller, which can monitor the position and state of the anti-retraction shoulder beam in real time. The piston rod of the longitudinal cylinder is connected to the anti-retraction shoulder beam, pushing the anti-retraction shoulder beam to slide along the predetermined track. The track is made of stainless steel material, which is smooth and wear-resistant, ensuring the smooth movement of the anti-retraction shoulder beam. In order to avoid the jamming phenomenon, a lubricant nozzle is also set on the track to spray lubricating oil regularly to reduce friction resistance.

[0031] The structure of the anti-retraction shoulder beam has also been optimized. Its cross-section is I-shaped, with a larger thickness in the middle and gradually thinner at both ends, forming a stable support point. The outer side of the anti-retraction shoulder beam is designed to bulge upward, which can limit the outer wall of the lifting pipe section 3. The lower surface of the anti-retraction shoulder beam is provided with a rubber pad, which can provide a buffer when contacting the lifting pipe section 3 and reduce the impact force. In addition, a limit switch is installed at the front end of the anti-retraction shoulder beam. When the anti-retraction shoulder beam reaches the specified position, the limit switch is triggered to stop the action of the cylinder to ensure that the anti-retraction shoulder beam is accurately in place.

[0032] The implementation principle of this embodiment is: The jacking device for subsea vertical jacking construction solves the problem of the automatic falling of the riser when the jacking cylinder reaches the maximum jacking stroke recovery in the prior art through reasonable design. The connection part of the head pipe section 4 and the jacking pipe section 3 adopts a reinforced design, which increases the reliability and sealing of the connection. The vertical jacks 21 in the jacking assembly 2 are evenly distributed to ensure the smoothness of the jacking process. The design of the jacking frame 1 takes into account stability and seismic performance, which increases the service life of the entire device. The addition of the stop support member 8 allows the jacking pipe section 3 to be temporarily supported in time after each jacking is completed, eliminating safety hazards. In summary, this embodiment not only improves the safety of construction, but also significantly improves construction efficiency and reduces construction costs.

[0033] Through the detailed design of the jacking assembly 2, the working performance of the jacking device is greatly improved. The high-performance hydraulic jack ensures the stability and safety of the jacking process. The introduction of the central control system enables multiple jacks to work together, improving the jacking efficiency. The lightweight design of the horizontal frame 22 reduces its own weight while retaining the necessary strength and rigidity to ensure a smooth jacking process. The optimized design of the support 11 enhances the overall stability, especially the improvement of the seismic performance, so that the device can operate for a long time in harsh environments. In summary, this embodiment not only improves the performance of the jacking device, but also expands its scope of application to meet the needs of more complex working conditions.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A subsea vertical jacking construction jacking device, characterized in that: include: A top pipe segment (4), wherein the top pipe segment (4) is used to be connected to the bottom of a top pipe cover (5) of a pipe segment structure (7); A plurality of lifting pipe sections (3), wherein the lifting pipe sections (3) are used to be extended below the head pipe section (4), and adjacent lifting pipe sections (3) are connected via flanges (6), and the outer peripheral surface of the lifting pipe section (3) is protruding from the outer peripheral surface of the flange (6); A lifting assembly (2), wherein the lifting assembly (2) is used to vertically lift a top pipe section (4) or a top pipe section (3). When installing the top pipe section (4), the top pipe section (4) is vertically lifted to the bottom of the top pipe cover (5) by the lifting assembly (2) and connected to the top pipe cover (5). When extending the bottom of the top pipe section (4), the lifting assembly (2) is retracted, and the top pipe section (3) is vertically lifted to the bottom of the top pipe section (4) by the lifting assembly (2) and connected to the top pipe section (4). When extending the bottom of the top pipe section (3), the top pipe section (3) is vertically lifted to the bottom of the top pipe section (3) that has been in place by the lifting assembly (2) and the connection operation between adjacent top pipe sections (3) is completed. A lifting frame (1) and a stop-retraction support member (8), wherein the upper surface of the lifting frame (1) is close to the bottom of the jacking cover (5) of the pipe segment structure (7), and the stop-retraction support member (8) is located on the upper surface of the lifting frame (1) and is used to temporarily support the lower pipe opening of the jacking pipe segment (3) that has been jacked into place, so that the lifting component (2) can retreat to the initial position to jack up the next jacking pipe segment (3).

2. A subsea vertical jacking construction jacking device according to claim 1, characterized in that: The anti-retreat support member (8) is two longitudinally arranged anti-retreat shoulder pole beams, and the anti-retreat shoulder pole beams are longitudinally mounted on the upper surface of the jacking frame (1).

3. A subsea vertical jacking construction jacking device according to claim 2, characterized in that: A plurality of longitudinal cylinders are arranged on both sides of the jacking frame (1). The longitudinal cylinders are used to drive the anti-retraction shoulder pole beam to slide longitudinally. When vertical jacking construction is performed, the longitudinal cylinders drive the anti-retraction shoulder pole beam to move in a direction away from the jacking pipe section (3). When each jacking pipe section (3) has been jacked into place, the longitudinal cylinders drive the anti-retraction shoulder pole beam to move below the lower pipe opening of the jacking pipe section (3) that has been jacked into place.

4. A subsea vertical jacking construction jacking device according to claim 1, characterized in that: The jacking frame (1) comprises a support (11) arranged at the bottom of the pipe segment structure (7), a plurality of columns (12) vertically arranged on the surface of the support (11), and a support frame (13) horizontally arranged on the top of the plurality of columns (12); the middle part of the support frame (13) can allow the head pipe segment (4) and the jacking pipe segment (3) to vertically pass through; when the jacking pipe segment (3) is jacked into place, the stop support member (8) is horizontally arranged on both sides of the lower pipe opening of the jacking pipe segment (3) that has been jacked into place; and the lower pipe opening of the jacking pipe segment (3) that has been jacked into place is temporarily placed on the stop support member (8) by retreating the jacking assembly (2).

5. A subsea vertical jacking construction jacking device according to claim 4, characterized in that: The bottom of the support (11) is filled with a concrete structure (9).

6. A subsea vertical jacking construction jacking device according to claim 4, characterized in that: The jacking assembly (2) comprises a plurality of vertical jacks (21) and a horizontal frame (22) horizontally arranged on the top of the plurality of vertical jacks (21), wherein the plurality of vertical jacks (21) are arranged at four corners of the horizontal frame (22), and the horizontal frame (22) is used for carrying a jacking pipe section (3) or a head pipe section (4).

7. A subsea vertical jacking construction jacking device according to claim 6, characterized in that: A plurality of vertical jacks (21) are supported on the support (11).

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