A construction method for barges and immersed tunnels that integrates the leveling of the crushed stone foundation and the installation of the immersed tunnel section.

Abstract

This application relates to a barge and a construction method for an immersed tunnel that integrates the leveling of a crushed stone foundation and the sinking of immersed tunnel sections, and belongs to the technical field of immersed tunnel construction. The integrated barge includes a hull, a leveling device, and an immersed tunnel section suspension device. The hull includes two floats and two transverse beams. The space located below the transverse beams, between the two floats, is used to house the immersed tunnel sections. The hollow area surrounded by the two floats and two transverse beams constitutes a moonpool. The leveling device includes a large vehicle, a small vehicle, and a leveling execution mechanism. The leveling execution mechanism is switched between an working state and a non-working state by inverting in a plane perpendicular to the large vehicle via the small vehicle. The immersed tunnel section suspension device is used to connect the immersed tunnel sections in the space located below the transverse beams and to control the sinking of the immersed tunnel sections. This integrated barge combines the functions of leveling the crushed stone foundation and sinking the immersed tunnel section into a single unit, effectively reducing the number of vessels required at the immersed tunnel construction site, thereby increasing construction efficiency and lowering construction costs.

Description

TECHNICAL FIELD

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to the Chinese patent applications filed with the China National Intellectual Property Administration on June 29, 2023, with application number 202310782179.X and titled "Barge Integrating Rock Foundation Leveling and Immersed Tube Sinking (Sinking and Installation) and Immersed Tunnel Construction Method", application number 202310782667.0 and titled "Assembly Method of Composite Immersed Tube Sinking Barge", application number 202310780464.8 and titled "Turnover Method of Turnover Leveling Device", application number 202310801680.6 and titled "Rubble Leveling Vessel and Rock Foundation Leveling Construction Method", application number 202310782189.3 and titled "Composite Sinking Barge and Assembly Method Thereof", application number 202310782705.2 and titled "Turnover Leveling Device, Leveling Vessel and Leveling Construction Method Thereof", application number 202321686974.0 and titled "Composite Immersed Tube Sinking Barge", and application number 202321690930.5 and titled "Turnover Leveling Device and Leveling Vessel Comprising the Same", the entire contents of which are incorporated herein by reference in their entirety.

[0002] The present application belongs to the technical field of immersed tunnel construction, and particularly relates to a barge (integrated barge, integrated structural unit) integrating rock foundation leveling and immersed tube sinking, and an immersed tunnel construction method.

BACKGROUND ART

[0003] As a large-scale underwater tunnel construction, the immersed tunnel has features including a wide selection range of tunnel cross-sectional shapes, low requirements for the ground, shallow burial depth, capability of effectively shortening the route length, and parallel operability of pipe joint construction processes. It is especially applicable to construction sites where the foundation trench is easy to excavate using water dredging facilities, such as soft ground, riverbeds and seabeds, and is widely applied in construction projects crossing seas and rivers.

[0004] The preparation of the crushed stone foundation and the installation of the immersed tunnel sections are two crucial processes in immersed tunnel construction, and they directly affect the construction quality and safety of the immersed tunnel section joints. Currently, the crushed stone foundation leveling work for immersed tunnels requires the use of a dedicated platform leveling vessel (see Patent Document 1) or a float leveling vessel (see Patent Document 2), and the sinking work for immersed tunnels requires the use of a separate sinking barge or a self-propelled floating transport and installation integrated vessel (see Patent Document 3). The arrangement of construction equipment required for the two construction processes is relatively large, and construction can only be carried out at sea or in Class 1 or 2 waterways with relatively large navigation capabilities. In limited construction areas, such as Class 4 waterways (where the water depth is between 2.5 and 3.2 m and the bottom width is between 40 and 45 m, allowing 500-ton class vessels to navigate), if the above-mentioned construction vessels are used to carry out the crushed stone foundation leveling and immersed tunnel sinking work respectively, the dimensions of the vessels cannot meet the navigation requirements, making it impossible to tow them into the site. Moreover, in limited construction areas, there are considerable obstacles to the layout of cable systems and work surfaces, resulting in high construction risks and low construction efficiency. To reduce the requirements for water depth and width of the shipping channel, a composite immersed tunnel transport and installation barge (see Patent Document 4) has already been developed and is being used for immersed tunnel installation work. However, the problem of the large number of construction equipment required in the two construction processes of leveling the crushed stone foundation and installing the immersed tunnel remains unresolved, as it interferes with the layout of the cable system and the work surface. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Chinese Patent No. CN103924597A [Patent Document 2] Chinese Patent No. CN109898514A [Patent Document 3] Chinese Patent No. CN106516021A [Patent Document 4] Chinese Patent No. CN110053720A [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] In other words, the immediate technical challenge that needs to be solved quickly is how to reduce the number of ships deployed at immersed tunnel construction sites and apply them to the limited construction area. [Means for solving the problem]

[0007] To address the technical challenges described above, this invention provides a construction method for barges and immersed tunnels that integrates the preparation of the crushed stone foundation with the installation of the immersed tunnel section.

[0008] The barge provided in the first aspect of this application, which integrates the leveling of the crushed stone foundation and the installation of the immersed tunnel section, With the long side as the vertical direction, there are two floats (floating bodies) installed side by side horizontally, It includes two transverse beams (crossbeams) that are installed between the two floats along the lateral direction and are located at the longitudinal ends of each float. Of these, the space located below the transverse beam and between the two floats is used to house the immersed tunnel section, and the hollow area surrounded by the two floats and two transverse beams constitutes the moonpool. A large vehicle is installed between two floats along the transverse direction and located above the moonpool, and moves relative to the floats between two transverse girders along the longitudinal direction, It is connected to a large vehicle, moves along the large vehicle, and in a plane perpendicular to the large vehicle. rotate A small vehicle making short trips, It includes a ground leveling mechanism used for leveling foundations, which is attached to a small vehicle and can be raised and lowered relative to the vehicle, Of these, the leveling mechanism operates in a vertical plane relative to the large vehicle via the small vehicle. rotate By doing so, the land leveling execution mechanism switches between working and non-working states, and when in working state, the land leveling execution mechanism Against Moonpool It is installed vertically to perform leveling work, and when not in operation, it extends to above the moonpool. rotate A leveling device, It includes a burial chamber suspension device installed on two transverse beams, used to connect burial chambers in the space located below the transverse beams, and to control the burial chambers.

[0009] A second aspect of the present application provides a construction method for an immersed tunnel that employs a barge that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section, and this construction method includes crushed stone foundation preparation work and immersed tunnel section installation work. The crushed stone foundation leveling work is carried out by the leveling execution organization using a small vehicle to move a large vehicle. rotate The system then switches to the working state, and the working position of the leveling mechanism is adjusted by the movement of the large vehicle along the vertical direction relative to the float and the movement of the small vehicle along the large vehicle, and the leveling work is performed on the crushed stone foundation. The immersed tunnel installation work involves the land leveling execution organization using small-vehicle vehicles to assist large-vehicle vehicles. rotate This involves switching to a non-working state, the immersed tunnel suspending device connecting the undropped immersed tunnel casing to the space located below the transverse beam, between the two floats, dropping the immersed tunnel casing using the immersed tunnel casing device, adjusting the position and angle of the immersed tunnel casing, and completing the immersion of the immersed tunnel casing.

[0010] Compared to the prior art, the advantages and positive effects of this invention are as follows: 1. The barge provided in this application, which integrates the leveling of the crushed stone foundation and the installation of the immersed tunnel section, combines the functions of leveling the crushed stone foundation and installing the immersed tunnel section into one unit. Since it can perform two construction processes, leveling the crushed stone foundation and installing the immersed tunnel section, it significantly reduces the number of vessels required at the immersed tunnel construction site and effectively avoids the problem of interference with cable system layout and work surfaces caused by the large number of vessels. 2. In the barge provided in this application which integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, the large traveling vehicle of the leveling device is positioned above the moonpool. rotate The position was set up, and the second one was located outside the moonpool. rotate The location is set up, and the first leveling is carried out by the leveling execution mechanism. rotate Position and second rotate location rotateto enter the working state, and respectively realize the ground leveling work for the foundation below the area enclosed by the moon pool and the ground leveling work for the foundation in a small area outside the area enclosed by the moon pool, which greatly improves the ground leveling efficiency and the ground leveling range, and the ground leveling execution mechanism is in the second rotate position to rotate to enter the working state, the ground leveling work can be carried out in the construction area where the ground leveling vessel cannot enter, so the application range is wide. 3. The barge integrating the ground leveling of the crushed stone foundation and the sinking and installation of the immersed tunnel segment provided by the present application adopts an assembled structure for its hull, which reduces the requirements on the water depth, channel width and clearance height of the channel in the construction area, enables construction in a limited construction water area, meets the construction requirements in the inland river class 4 channel area, and has a wide application range. 4. In the immersed tunnel construction method provided by the present application, both the crushed stone foundation ground leveling work and the immersed tunnel segment sinking and installation work are performed by the barge integrating the crushed stone foundation ground leveling and the immersed tunnel segment sinking and installation. By switching the ground leveling execution mechanism from the working state to the non-working state, the immersed tunnel segment sinking and installation work can be directly carried out after the crushed stone foundation ground leveling work is completed, so the construction efficiency is high, the cycle is short, and the construction cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are provided to further understand the present application and constitute a part of the present application. The schematic embodiments of the present application and the descriptions thereof are used to interpret the present application and do not constitute an improper limitation on the present application. In the drawings, [Figure 1] Figure 1 is a schematic structural view of the barge integrating the ground leveling of the crushed stone foundation and the sinking and installation of the immersed tunnel segment provided by one embodiment of the present application. [Figure 2] Figure 2 is a perspective view of the ground leveling apparatus when the ground leveling execution mechanism is at the first rotational position and in the working state in one embodiment of the present application. [Figure 3] Figure 3 is a perspective view of the ground leveling execution mechanism and the small traveling vehicle in one embodiment of the present application. [Figure 4]Figure 4 is a side view of the ground leveling apparatus when the ground leveling execution mechanism is in the first rotational position and in a working state in one embodiment of the present application. [Figure 5] Figure 5 is a partially enlarged view of part B in Figure 4. [Figure 6] Figure 6 is a side view of the ground leveling apparatus when the ground leveling execution mechanism is in the first rotational position and in a non-working state in one embodiment of the present application. [Figure 7] Figure 7 is a partially enlarged view of part C in Figure 6. [Figure 8] Figure 8 is a partially enlarged view of part A in Figure 2. [Figure 9] Figure 9 is a perspective view of the ground leveling apparatus when the ground leveling execution mechanism is in the second rotational position and in a working state in one embodiment of the present application. [Figure 10] Figure 10 is a partially enlarged view of part D in Figure 9. [Figure 11] Figure 11 is a side view of the ground leveling apparatus when the ground leveling execution mechanism is in the second rotational position and in a working state in one embodiment of the present application. [Figure 12] Figure 12 is a side view of the ground leveling apparatus when the ground leveling execution mechanism is in the second rotational position and in a non-working state in one embodiment of the present application. [Figure 13] Figure 13 is a perspective view of the hull in one embodiment of the present application. [Figure 14] Figure 14 is a partially enlarged view of part F in Figure 13. [Figure 15] Figure 15 is a top view of the hull in one embodiment of the present application. [Figure 16] Figure 16 is a side view of the hull in one embodiment of the present application. [Figure 17] Figure 17 is a partially enlarged view of part E in Figure 15. [Figure 18] Figure 18 is a top view of the composite body in one embodiment of the present application. [Figure 19] Figure 19 is a front view of the composite body in one embodiment of the present application. [Figure 20]Figure 20 is a top view of one embodiment of the present application, in which the composite is supported at one longitudinal end of the float. [Figure 21] Figure 21 is a front view of one embodiment of the present application, in which the composite is supported at one longitudinal end of the float. [Figure 22] Figure 22 is a top view of one embodiment of the present application when the transverse beam has moved to the other end of the float in the longitudinal direction. [Figure 23] Figure 23 is a front view of one embodiment of the present application when the transverse beam has moved to the other end in the longitudinal direction of the float. [Figure 24] Figure 24 is a top view of a completed integrated barge in one embodiment of the present application. [Figure 25] Figure 25 is a front view of an assembled, integrated barge in one embodiment of the present application. [Figure 26] Figure 26 is a flowchart of the construction method for an immersed tunnel provided in one embodiment of the present invention. [Figure 27] Figure 27 is a flowchart of the rotation method provided in one embodiment of the present invention.

[0012] In the diagram 1. Ground leveling equipment; 2. Hull; 201, space; 202, Moonpool; 3. Suspension device for immersed tunnel sections; 4. Mooring equipment; 5. First connecting member; 6. Second connecting member; 7, adjustment device; 8, sunken burial box; 11. High-speed vehicles; 1101, No. 1 rotate position; 1102, 2nd rotate position; 12. Small-scale vehicles; 13. Land leveling implementation mechanism; 14. Drive mechanism; 111. Track girder; 1111, first orbit; 112, large orbital ring; 113. Position-limited assembly; 1131, Location-Specific Rod; 114. Cover plate; 115. Lifting member; 121, small orbital ring; 1211, 1st minor raceway ring; 1212, 2nd small raceway ring 1212; 131. Shoot; 132. Ground leveling head; 133. Lifting assembly; 1331, 2nd winding machine; 1332, suspension rope; 141, 1st winding machine; 142. First towing rope; 143. Reaction frame; 1431, frame; 1432, reaction frame raceway; 144, First towing wheel; 20. Complex; 21. Float; 2101, the first end of the float; 2102, the second end of the float; 211. Transverse beam connection section; 212, support part; 213, second orbit; 214, third orbit; 215. Transverse beam movable support member; 22, crossbeam; 22a, first crossbeam; 22b, second crossbeam; 221. Overlapping connection section; 222, Position-limiting member; 223, depression; 23, crossbeam movement mechanism; 231, second towing wheel; 232. Crossbeam sliding winch; 233, Second towing rope; 31. Drop winch; 32. Mounting winch; 41. Mooring winch; 42. Mooring cable; 71. Adjustable winch; 72. Adjustment cable; a. Notch. [Modes for carrying out the invention]

[0013] The following provides a clear and complete description of the technical methods in the embodiments of this application, in conjunction with the drawings of those embodiments. Of course, the embodiments described are only a selection of the embodiments of this application, not all of them. Any other embodiments obtained by a person skilled in the art based on the embodiments of this application, without any creative work on their part, are all within the scope of protection of this application.

[0014] What must be understood in the description of this application is that the directions or positional relationships indicated by terms such as "horizontal direction," "vertical direction," "up," "down," "perpendicular," "horizontal," "peak," "bottom," "inside," and "outside" are based on the directions or positional relationships shown in the diagram, and are merely used to make the description of this application easier to understand and to simplify the description. They do not necessarily indicate or suggest that the devices or elements being referred to have a specific direction, or that they are configured and operated in a specific direction, and therefore cannot be understood as limitations on this application.

[0015] The terms “first,” “second,” and “third” are used solely to describe the purpose and should not be understood as indicating or implying relative importance or the number of technical features being referred to. Therefore, features designated as “first,” “second,” or “third” may explicitly or implicitly include one or more such features.

[0016] It must be explained in this application that, unless otherwise clearly specified and limited, the terms "attachment," "connection," and "connection" should be understood in a broad sense. For example, it could be a fixed connection, a detachable connection, or an integrated connection. It could also be a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. A person skilled in the art will be able to understand the specific meaning of the above terms in this application depending on the specific situation.

[0017] In the description of this application, the terms "hoisting machine," "lifting member," "dropping winch," "mounting winch," and "mooring winch" all refer to existing equipment, and their specific structural configurations and operating methods can all be described in detail in this application, as prior art can be referenced.

[0018] As shown in Figures 1 to 7, in a schematic embodiment of the barge that integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section of the present invention, the barge that integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section includes a hull 2, a leveling device 1, and an immersed tunnel section suspension device 3. The hull 2 ​​includes two floats 21 and two transverse beams 22. If the longitudinal direction of the floats 21 is the vertical direction, the two floats 21 are installed in parallel in the transverse direction, and the two transverse beams 22 are both erected between the two floats 21 along the transverse direction, and the two transverse beams 22 are located at the longitudinal ends of the floats 21, and the space 201 located below the transverse beams 22 and between the two floats 21 is used to house the immersed tunnel section, and the two floats 21 and the two transverse beams 22 The enclosed hollow region constitutes the moonpool 202, and the leveling device 1 includes a large vehicle 11, a small vehicle 12, and a leveling execution mechanism 13. The large vehicle 11 is installed between two floats 21 along the lateral direction and is located above the moonpool 202. The large vehicle 11 moves relative to the floats 21 between two transverse girders along the longitudinal direction. The small vehicle 12 is connected to the large vehicle 11 and moves along the large vehicle 11 and in a plane perpendicular to the large vehicle 11. rotateThe ground leveling mechanism 13 is used for leveling the foundation, is attached to the small vehicle 12, and can move up and down relative to the small vehicle 12, and the ground leveling mechanism 13 moves in a vertical plane relative to the large vehicle 11 via the small vehicle 12. rotate This switches the ground leveling execution mechanism 13 between working and non-working states. When in working mode, the ground leveling execution mechanism 13 is installed vertically and performs ground leveling work. When in non-working mode, the ground leveling execution mechanism 13 is installed vertically above the moonpool 202. rotate For example, the immersed tunnel section suspension device 3 is laid horizontally along the transverse direction and installed on two transverse beams 22. It is used to connect the immersed tunnel sections in the space 201 located below the transverse beams 22 and to control the immersion of the immersed tunnel sections.

[0019] The barge, which integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, is used until the leveling execution mechanism 13 is in a working state where it is vertical. rotate This allows for leveling work on the crushed stone foundation, and the leveling execution mechanism 13 is able to reach the non-working state above the moonpool 202 of the hull 2. rotate By doing so, the space 201 between the two floats 21 below the transverse beam 22 of the hull 2 ​​can be used for storing the immersed tunnel section, and the immersed tunnel section can be lowered using the immersed tunnel section suspension device 3 mounted on the hull 2. Since the functions of preparing the crushed stone foundation and lowering the immersed tunnel section are combined into one, two construction processes can be carried out, significantly reducing the number of vessels required at the immersed tunnel construction site and effectively avoiding problems that arise from the layout of cable systems and working surfaces due to the large number of vessels. Furthermore, since the barge that combines the functions of preparing the crushed stone foundation and lowering the immersed tunnel section combines the functions of preparing the crushed stone foundation and lowering the immersed tunnel section into one, the immersed tunnel section can be lowered directly after the crushed stone foundation preparation work is completed, simplifying the arrangement of vessels, significantly improving construction efficiency, and reducing construction costs. Furthermore, the barge, which integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, allows the leveling execution mechanism 13 to reach the non-working state above the moonpool 202 of the hull 2. rotateWhen this is done, the overall height is relatively low, reducing the requirements for water depth and clearance in the construction area, and allowing construction to be carried out in a limited construction water area, thus having a wide range of applications.

[0020] As shown in Figures 2, 4, and 6, in this embodiment, the first is located in the portion directly above the moonpool 202 of the large-vehicle 11. rotate Position 1101 is provided, and the leveling execution mechanism 13 is transmitted via the small vehicle 12 to the first rotate At position 1101, relative to the large moving vehicle 11 rotate The land leveling execution organization 13 will carry out the first rotate When the system switches to working mode at position 1101, the leveling execution mechanism 13 penetrates the moonpool 202 and performs leveling work on the foundation within the area enclosed by the moonpool 202. The small vehicle 12 is first rotate At position 1101 Position Limited rotate By doing so, the leveling execution mechanism 13 can perform leveling work on the foundation within the area surrounded by the moonpool 202. rotate Later, I guarantee that it will be able to penetrate Moonpool 202. I must explain, but the first rotate Position 1101 is preferably located in the middle of the large traveling vehicle 11, so that the floats 21 of the hull 2 ​​are positioned relative to the leveling mechanism 13 rotate To prevent interference.

[0021] To facilitate leveling work in areas outside the area enclosed by the moonpool 202, as shown in Figures 8, 9, 11, and 12, one end of the large vehicle 11 extends outside the moonpool 202, and the portion of the large vehicle 11 extending outside the moonpool 202 has a second rotate Position 1102 is provided, and the leveling execution mechanism 13 is connected to the second via the small vehicle 12. rotate At position 1102, relative to the large moving vehicle 11 rotate The land leveling execution organization 13 will carry out the second rotate When the system switches to working mode at position 1102, the leveling execution mechanism 13 is located outside the moonpool 202 and performs leveling work on the foundation outside the area enclosed by the moonpool 202. rotate At position 1102, the ground leveling mechanism 13 is outside the moonpool 202 rotate This enables the system to enter the work state, and the leveling execution mechanism 13 is located above the moon pool 202. rotate At position 1101 rotate When combined with entering the work state, it is possible not only to level the foundation below the area enclosed by Moonpool 202, but also to level the foundation in a small area outside the area enclosed by Moonpool 202, greatly increasing the leveling efficiency and leveling range. In addition, the leveling execution mechanism 13 is second rotate At position 1102 rotate By entering the work state in this manner, it becomes possible to perform leveling work in construction areas that leveling vessels cannot enter (for example, crushed stone foundations within docks that have been prepared in advance), thus giving it a wide range of applications.

[0022] The following describes the specific relationship between the small-travel vehicle 12 and the large-travel vehicle 11. rotate Let me explain the method. As shown in Figures 2 to 7, the large track 11 includes two opposing track girders 111, and on the opposing sides of the two track girders 111, there is a first track 1111 extending along the lateral direction. On both sides of the small track 12, there are small track wheels 121 that are rotatably connected to the two first tracks 1111, and there are two small track wheels 121 that are rotatably connected to each first track 1111, which are the first small track wheel 1211 and the second small track wheel 1212, and each track girder 111 has a first track 1211. rotate At the location corresponding to position 1101, the first small track wheel 1211 is the first rotate At position 1101 Position A position-limiting assembly 113 for limiting the position is detachably connected to the first of each track girder 111. rotate At the location corresponding to position 1101, a notch a is also provided for the second small track wheel 1212 to move out from the first track 1111. The notch a is located above the first track 1111 and is in communication with the first track 1111, and the small vehicle 12 rotate In this case, the wheelset of the first small track wheel 1211, which is limited by the position-limiting assembly 113, is used as the axis. LocationThe unrestricted second small track wheel 1212, the small running vehicle 12 rotate When doing so, it passes through notch a. In this embodiment, by combining the small track wheels 121 installed on both sides of the small track 12 with the first track 1111 of the two track girders 111 of the large track 11, on the one hand, the small track 12 can move along the large track 11, and on the other hand, the small track 12 moves relative to the large track 11 with the wheel axle of one of the small track wheels 121 as the axis. rotate This can be achieved. At the same time, by limiting the position of the first small track wheel 1211 with the installed position limiting assembly 113, the small running vehicle 12 can be moved rotate Location Position It can be limited, and the second small track wheel 1212 is the small running vehicle 12 rotate In doing so, the installed notch a allows the small track wheels 121 to move out of the first track 1111, and by utilizing this, the stability of the small track wheels 12's movement along the large track wheels 11 is guaranteed. rotate It can be achieved, and moreover, rotate The structure is simple. For the same reason, as shown in Figure 8, the second rotate Similarly, position 1102 is also provided with a position limiting assembly 113 and a notch a, and similar rotateThe system is realized. It should be explained that the small track vehicle 12 drives the small track wheels 121 to rotate using its own power equipment, and the small track vehicle 12 can move the leveling execution mechanism 13 to move along the large track vehicle 11. Even if the small track vehicle 12 does not have power equipment or has insufficient power, the small track vehicle 12 and the leveling execution mechanism 13 can be pulled by separately installed power equipment to move along the large track vehicle 11. By installing the position limiting assembly 113 in a detachable form, it is possible to remove the position limiting assembly 113 during the process of the small track wheels 121 moving along the first track 1111 to avoid interference with the movement of the small track wheels 121. It is understood that when the first small track wheels 1211 move to the desired limited position, the position limiting assembly 113 is attached to the track girder 111 to limit the position of the small track wheels 1211. If it is necessary to release the position limiting effect on the first small track wheels 1211, the position limiting assembly 113 can be removed.

[0023] Specifically, as shown in Figure 5, in this embodiment, the position-limiting assembly 113 specifically includes a pair of position-limiting rods 1131, and when limiting the position of the small track wheel 121, the pair of position-limiting rods 1131 are positioned on both sides of the small track wheel 121, and each abuts against both sides of the small track wheel 121. By adopting the pair of position-limiting rods 1131 as the position-limiting assembly 113, the small track wheel 121 is positioned between the two position-limiting rods 1131. , that position Since it is limited, the first is the small-travel vehicle 12 rotate Position 1101 or 2 rotate At position 1102 Position It can be limited, has a simple structure, and is easy to operate.

[0024] Furthermore, as shown in Figure 5, a cover plate 114 for opening and closing the notch a is provided in the notch a, and the cover plate 114 is detachably connected to the notch a. The installed cover plate 114 allows the small vehicle 12 to open and close. rotateWhen necessary, the notch a is opened, and as the small vehicle 12 moves along the large vehicle 11, the cover plate 114 shields the notch a to maintain the sealing of the top of the first track 1111 and prevent foreign objects from falling into the first track 1111 and affecting the movement of the small vehicle 12.

[0025] It should be explained further that the leveling mechanism 13 for the large-vehicle 11 rotate To facilitate this, as shown in Figures 2 and 9, in this embodiment, the leveling execution mechanism 13 is mounted on the large traveling vehicle 11. rotate A drive mechanism 14 is provided for driving the vehicle, and the drive mechanism 14 includes a first hoisting machine 141 installed on the large vehicle 11 and a first traction rope 142 connected between the first hoisting machine 141 and the top of the leveling execution mechanism 13. The first hoisting machine 141 moves the leveling execution mechanism 13 and the small vehicle 12 by slackening the first traction rope 142, and the wheelsets of the small track wheels 121 are pivots in a plane perpendicular to the large vehicle 11. rotate The leveling execution mechanism 13 is switched between working and non-working states. By adopting a drive mechanism 14 that combines the first hoisting machine 141 and the first towing rope 142, the structure is simple and the leveling execution mechanism 13 rotate It is easy to control and large rotate It does not require power. It should be explained that in this embodiment, as shown in Figure 2, the first hoisting machine 141 is the second of the large traveling vehicle 11. rotate It is located at one end furthest from position 1102. Further explanation is needed, but the leveling mechanism 13 is rotate In this case, the leveling mechanism 13 moves downward from the side furthest from the first hoisting machine 141. rotate It is necessary to drive the ground leveling execution mechanism 13 rotateBefore proceeding, it must be ensured that the weight of the part of the leveling mechanism 13 located below the small vehicle 12 in the working state (i.e., the part of the leveling mechanism 13 located on the side of the small vehicle 12 furthest from the first hoisting machine 141 in the non-working state) is heavier than the weight of the part of the leveling mechanism 13 located above the small vehicle 12 (i.e., the part of the leveling mechanism 13 located on the side of the small vehicle 12 furthest from the first hoisting machine 141 in the non-working state). This ensures that the leveling mechanism 13 is located from the side closer to the first hoisting machine 141. rotate They are avoiding doing that.

[0026] Specifically, as shown in Figure 3, the leveling execution mechanism 13 includes a chute 131, a leveling head 132, and a lifting assembly 133. The chute 131 is installed through the small vehicle 12 and can be raised and lowered relative to the small vehicle 12. The leveling head 132 is connected to the bottom of the chute 131. The lifting assembly 133 includes a second hoisting machine 1331 fixed to the small vehicle 12 and a suspension rope 1332 connected between the chute 131 and the second hoisting machine 1331. Since the leveling head 132 is attached to the bottom of the chute 131, the suspension rope 1332 can be slackened by the second hoisting machine 1331, positioning the small vehicle 12 in the middle of the chute 131. This ensures that, under working conditions, the weight of the part of the leveling execution mechanism 13 located below the small vehicle 12 is greater than the weight of the part of the leveling execution mechanism 13 located above the small vehicle 12.

[0027] Furthermore, as shown in Figures 2 and 9, the drive mechanism 14 further includes a reaction frame 143 (reaction frame 143) connected to the large vehicle 11, the reaction frame 143 moves along the large vehicle 11, and the first traction rope 142 is wrapped around the reaction frame 143 from below, and the leveling execution mechanism 13 is the first rotate At position 1101 rotate Then the reaction frame 143 is near the first hoisting machine 141 Location Limited, the land leveling execution mechanism 13 is second rotate At position 1102 rotate Then, the reaction frame 143 is the first rotate At position 1101 Location It is limited. By applying a reaction force to the first towing rope 142 with the installed reaction frame 143, the first hoisting machine 141 pulls the leveling execution mechanism 13. rotate It is possible to reduce the force required when performing the work. It should be explained that the leveling execution mechanism 13 is second rotate At position 1102 rotate When this happens, the reaction frame 143 is first rotate At position 1101 Position By limiting the first towing rope 142, a more appropriate angle can be formed between the reaction force frame 143 on both sides, thereby achieving a more labor-saving state. Furthermore, it should be explained that the leveling execution mechanism 13 and the small vehicle 12 are second rotate When moved to position 1102, the reaction frame 143 is connected to the top end of the leveling mechanism 13 using a locking member (e.g., a locking wire), and the reaction frame 143 is moved according to the small vehicle 12 and the leveling mechanism 13. rotate It can be moved to position 1101, and there is no need to provide a separate drive structure to drive the movement of the reaction force frame 143.

[0028] Specifically, as shown in Figure 10, in this embodiment, the reaction frame 143 specifically includes reaction frame raceway wheels 1432 that are rotatably connected to two first raceways 1111, and a frame body 1431 connected between the two reaction frame raceway wheels 1432, with a first traction rope 142 wrapped around the frame body 1431, and the leveling execution mechanism 13 is first rotate At position 1101 rotate At that time, the reaction frame 143 is connected to the first hoisting machine 141 by a locking member, and the leveling execution mechanism 13 is second rotate At position 1102 rotate At that time, the reaction frame track wheel 1432 of the reaction frame 143 is first by the position limiting assembly 113 rotate At position 1101 Location It is limited. The reaction frame 143 employing the above structure is the first rotate Since the position can be limited using the position limiting assembly 113 located at position 1101, there is no need to provide any other position limiting structures.

[0029] As shown in Figures 2 and 8, the drive mechanism 14 further drives the leveling execution mechanism 13 to perform the first rotate From position 1101 to the second rotate Used to move to position 1102, the drive mechanism 14 is the second of the large vehicle 11. rotate The system further includes a first towing wheel 144 located at the lateral end near position 1102, and when the drive mechanism 14 is used to drive the movement of the leveling execution mechanism 13, one end of the first towing rope 142 furthest from the first hoist 141 is wrapped around the first towing wheel 144 and connected to the side of the small vehicle 12 away from the first hoist 141, and the first hoist 141 moves the leveling execution mechanism 13 and the small vehicle 12 along the large vehicle 11 by winding up the first towing rope 142. rotate From position 1101 to the second rotate Move to position 1102.

[0030] To further expand the application range of the barge that integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, as shown in Figures 13 to 25, in this embodiment, the float 21 and the transverse beam 22 are detachably connected. When the float 21 and the transverse beam 22 are separated, the leveling device 1 and the two transverse beams 22 are detachably connected to form a composite device 20. Within the composite device 20, the leveling device 1 is located between the two transverse beams 22, and the leveling execution mechanism 13 is in a non-working state within the leveling device 1. rotate By detachably connecting the floats 21 and transverse beams 22 of the hull 2, the floats 21 and the composite 20 consisting of the transverse beams 22 and the leveling device 1 can be transported to the construction site and assembled there, further reducing the requirements for water depth and width of the channel and meeting the construction requirements within the Class 4 inland river channel area.

[0031] It should be explained that, as shown in Figure 19, in the composite structure 20, first connecting members 5 are installed on both sides of the large track 11, and second connecting members 6 are installed on the sides of the two crossbeams 22 facing the large track 11, opposite to the first connecting members 5. The first connecting members 5 and the second connecting members 6, which are installed opposite each other, are detachably connected. The assembly of the composite structure 20 is realized by the detachable connection of the installed first connecting members 5 and second connecting members 6. Specifically, in this embodiment, the first connecting member 5 is a connecting base, and the second connecting member 6 is a connecting plate, with the connecting plate being inserted into the connecting base and connected to the connecting base with bolts. Such a detachable connection structure, combining a connecting base, a connecting plate, and bolts, is simple in structure and convenient for assembling and disassembling the composite structure.

[0032] To facilitate the assembly of the barge, which integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, as shown in Figures 13-16, 22, and 23, the float 21 includes transverse girder connection sections 211 located at both longitudinal ends and a support section 212 connected between the two transverse girder connection sections 211. The transverse girder 22 is equipped with overlapping connection sections 221 used to overlap and connect (overlapping) to the two transverse girder connection sections 211 at the corresponding ends of the two floats 21. The overlapping connection sections 221 and the transverse girder connection sections 211 are detachably connected. The support section 212 is provided with a second track 213 and a third track 214 extending along the longitudinal direction. A transverse girder movable support member 215 is slidably connected to the second track 213. The transverse girder movable support members 215 of the two floats 21 connect to the transverse girder connection section 221 of the float 21. These are used to support the transverse girder 22 when it is not overlapped with section 211, and to move the supported transverse girder 22 along the longitudinal direction (i.e., the transverse girder movement support members 215 of the two floats 21 support the overlapping connection sections 221 at both ends of one transverse girder 22 in the composite 20 when the overlapping connection sections 221 at both ends of the two floats 21 are each overlapped with the two transverse girder connection sections 211 at the corresponding ends of the two floats 21, and then transport the supported transverse girder 22 after it has been separated from the leveling device 1). As shown in Figure 19, a large track wheel 112 is provided at the bottom of the large vehicle 11, which is aligned with the third track 214, and the large track wheel 112 is connected to the bottom of the large vehicle 11 by a lifting member 115.

[0033] The assembly process for the hull 2 ​​is as follows. As shown in Figures 18 and 19, the leveling device 1, which is in a non-working state, is connected between two transverse girders 22 to form a composite structure 20, thereby moving the composite structure 20 and two floats 21 above the planned construction area. One of the transverse girders 22 is the first transverse girder 22a, and the other transverse girder 22 is the second transverse girder 22b. As shown in Figures 20 and 21, the two floats 21 are controlled to sink, move to below both ends of the composite structure 20, and then controlled to float up. The overlapping connection portions 221 at both ends of the first transverse girder 22a within the composite structure are overlapped and connected onto the transverse girder connection portions 211 at one end of the two floats 21 in the longitudinal direction, and the overlapping connection portions 221 at both ends of the second transverse girder 22b are supported on the transverse girder movement support members 215 of the two floats 21. Next, the large vehicle 11 of the leveling device 1 is erected between the two floats 21, and the integrally overlapping connection part 221 and the transverse girder connection part 211 are connected, and as shown in Figures 22 and 23, the connection between the second transverse girder 22b and the leveling device 1 is severed, and the transverse girder 22b is moved by the transverse girder moving support member 215 to the longitudinal end of the float 21 that is farther from the first transverse girder 22a, and as shown in Figures 24 and 25, the overlapping connection parts 221 at both ends of the second transverse girder 22b are overlapped and connected onto the transverse girder connection parts 211 of the two floats 21, and the integrally overlapping connection part 221 and the transverse girder connection part 211 are connected, and the connection between the leveling device 1 and the first transverse girder 22a is severed, completing the assembly of the integrated barge (integrated barge, integrated segment, integrated block). In this embodiment, the composite 20 is supported between the same longitudinal ends of two floats 21, and the assembly is completed by moving one of the transverse girders 22 to the other longitudinal end of the float 21 by moving the installed transverse girder moving support member 215 along the second track 213. This simplifies the assembly process, enables rapid assembly of an integrated barge, and results in high assembly efficiency and a short cycle.It should be explained that the lifting member 115 extends to lower the large track wheel 112, placing the large track wheel 112 on the third track 214, thereby suspending the large vehicle 11 between the two floats 21. After separating the large vehicle 11 from the first transverse girder 22a and the second transverse girder 22b, the large vehicle 11 is lowered by contracting the lifting member 115, thus avoiding the lifting member 115 remaining in an elevated state. When dismantling the integrated barge after construction is complete, the lifting member 115 is extended to raise the large vehicle 11, making it easier to adjust the height of the large vehicle 11. By aligning the first connecting member 5 with the second connecting member 6, the first connecting member 5 and the second connecting member 6 are connected with bolts, which helps in overlapping and connecting the large vehicle 11 and the two transverse girders 22 to form a composite structure 20. It should be further explained that, as shown in Figure 15, both the second track 213 and the third track 214 extend from the transverse girder connection 211 at one longitudinal end of the float 21 to the transverse girder connection 211 at the other longitudinal end. It should also be explained that the overlapping connection 221 and the transverse girder connection 211 are detachably connected by a third connecting member (for example, a bolt).

[0034] Furthermore, as shown in Figures 16 and 17, position limiting members 222 are provided at both ends of the transverse beam 22 to contact the side of the float 21 and limit the relative position of the transverse beam 22 and the float 21. A recess 223 is formed below the overlapping connection portion 221 to accommodate the transverse beam connection portion 211 of the float 21, and the position limiting members 222 are installed on the wall of the recess 223 facing the transverse beam connection portion 211. By installing the recess 223 below the overlapping connection portion 221 of the transverse beam 22 and combining it with the transverse beam connection portion 211 of the float 21, quick positioning between the overlapping connection portion 221 and the transverse beam connection portion 211 can be achieved. At the same time, the installed position limiting members 222 limit the transverse beam connection portion 211 to a position within the recess 223, thereby avoiding collision between the transverse beam connection portion 211 of the float 21 and the side wall of the recess 223. To facilitate the installation of the position-limiting member 222, as shown in Figure 17, the upper part of the wall of the recess 223 facing the crossbeam connection portion 211 is a vertical surface, and the lower part is an inclined surface that slopes away from the crossbeam connection portion 211, and the position-limiting member 222 is installed on the inclined surface.

[0035] To facilitate the movement of the transverse beams 22, as shown in Figure 13, the integrated barge further includes a mooring device 4, which includes a plurality of mooring winches 41 positioned on the two transverse beams 22. Mooring winches 41 are provided near both ends of each transverse beam 22, to which mooring cables 42 are connected. As shown in Figure 22, when the transverse beams 22 move, the installed mooring winches 41 retract the mooring cables 42, thereby enabling the movement of the transverse beams 22.

[0036] The longitudinal ends of the two floats 21 are the first end 2101 and the second end 2102 of the floats 21, respectively, and of the two transverse girders 22, the one closer to the first end 2101 of the floats 21 is the first transverse girder 22a, and the one closer to the second end 2102 of the floats 21 is the second transverse girder 22b. In another embodiment, as shown in Figures 13 and 14, the integrated barge further includes a transverse girder moving mechanism 23, which is used to move the second transverse girder 22b to the second end 2102 of the floats 21 after the composite 20 is separated (i.e., after the first transverse girder 22a, the leveling device 1 and the second transverse girder 22b are separated) when supporting the composite 20 between the first ends 2101 of the two floats 21, and between the second end 2102 of the two floats 21 and the second transverse girder 22b Each of the crossbeams is provided with a set of crossbeam moving mechanisms 23, each crossbeam moving mechanism 23 includes a second towing wheel 231, a crossbeam moving winch 232, and a second towing rope 233. The second towing wheel 231 is installed on the second end 2102 of the float 21, the crossbeam moving winch 232 is installed on the second crossbeam 22b, one end of the second towing rope 233 is connected to the crossbeam moving winch 232, and the other end of the second towing rope 233 is wrapped around the second towing wheel 231 and connected to the second crossbeam 22b.

[0037] The above-described integrated barge is installed so that the floats 21 and transverse beams 22 of the hull 2 ​​can be detachably connected, allowing the floats 21 and the composite 20 consisting of the transverse beams 22 and the leveling device 1 to be transported to the construction site and assembled there. During assembly, the composite 20 is supported between the same longitudinal ends of the two floats 21, and one of the transverse beams 22 within the composite 20 is moved to the other longitudinal end of the float 21 by the installed transverse beam moving mechanism 23 to complete the assembly. This results in a simple assembly process, high assembly efficiency, and a short cycle. Furthermore, the above-mentioned integrated barge moves the transverse beam 22 using a transverse beam movement mechanism 23 which combines the second towing wheel 231, the transverse beam movement winch 232, and the second towing rope 233. Therefore, there is no need to separately arrange a cable to wind up the transverse beam 22, and the combination of the second towing wheel 231 and the second towing rope 233 guides the movement of the transverse beam 22, allowing it to be quickly moved to the predetermined position, resulting in high assembly efficiency.

[0038] To control the direction of movement of the transverse beam 22 in conjunction with the transverse beam movable support member 215, the composite immersed tunnel dropping barge further includes an adjustment device 7 for adjusting the direction in which the transverse beam 22 moves in conjunction with the transverse beam movable support member 215, the adjustment device 7 is installed between the corresponding ends of the two transverse beams 22, there are two adjustment devices 7, the two adjustment devices 7 are located close to each end of the two transverse beams 22, the adjustment device 7 includes two adjustment winches 71 installed at the same end of the two transverse beams 22, and an adjustment cable 72 connected between the two adjustment winches 71. Before moving the second transverse beam 22b, two adjustment devices 7 are incorporated between the ends of the transverse beam 22 by connecting an adjustment cable 72 between the adjustment winches 71 at the corresponding ends of the two transverse beams 22. When moving the second transverse beam 22b, the adjustment winch 71 located on the first transverse beam 22a within the adjustment device 7 loosens the adjustment cable 72, and the adjustment winch 71 located on the second transverse beam 22b retracts the adjustment cable 72. The direction of movement of the second transverse beam 22b is controlled by adjusting the speed at which the adjustment winches 71 in the two adjustment devices 7 loosen and retract the adjustment cable 72.

[0039] Furthermore, it should be explained that, as shown in Figure 13, the immersed tunnel suspending device 3 includes a plurality of drop winches 31 and a plurality of mounting winches 32 positioned on two transverse beams 22. Dropping cables for dropping the immersed tunnel are connected to the drop winches 31, and mounting cables for adjusting the position and angle of the immersed tunnel are connected to the mounting winches 32.

[0040] Based on the barge that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section as described above, the present invention further provides a construction method for an immersed tunnel that employs a barge that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section as described in any of the above embodiments, and as shown in Figure 26, the construction method includes crushed stone foundation preparation work S1 and immersed tunnel section installation work S2. The crushed stone foundation leveling work in S1 is carried out by the leveling execution mechanism 13 via the small vehicle 12 to the large vehicle 11. rotateThe system then switches to the working state, and the working position of the leveling execution mechanism 13 is adjusted by the vertical movement of the large traveling vehicle 11 relative to the float 21 and the movement of the small traveling vehicle 12 along the large traveling vehicle 11, and leveling work is performed on the crushed stone foundation. The S2 immersed tunnel installation work involves the leveling execution mechanism 13 moving the large vehicle 11 via the small vehicle 12. rotate This involves switching to a non-working state, connecting the undropped immersed tunnel section suspension device 3 to the space 201 located below the transverse girder 22, between the two floats 21, dropping the immersed tunnel section using the immersed tunnel section suspension device 3, adjusting the position and angle of the immersed tunnel section, and completing the immersion of the immersed tunnel section.

[0041] In the above-described construction method for immersed tunnels, both the preparation of the crushed stone foundation and the installation of the immersed tunnel sections are carried out by a barge that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel sections. Since the preparation execution mechanism 13 switches from an operating state to a non-operating state, the immersed tunnel section installation can be carried out directly after the preparation of the crushed stone foundation is completed, resulting in high construction efficiency, a short cycle, and low construction costs. The key point of the construction method provided in this application lies in the improvement of a construction method that integrates the functions of preparing the crushed stone foundation and installing the immersed tunnel sections. The specific methods for preparing the crushed stone foundation and the specific methods for displaying and installing the immersed tunnel sections are outside the scope of this application's undisclosed provisions and can therefore be implemented by referring to prior art.

[0042] Furthermore, as shown in Figures 18 to 25 and Figure 26, the above-described construction method for the immersed tunnel includes an assembly step S0 of the integrated barge, and the integrated barge assembly step S0 includes the following: Step S01 involves connecting a non-working leveling device 1 between two transverse girders 22 to form a composite structure 20, and moving the composite structure 20 and two floats 21 above the construction area, wherein one of the transverse girders 22 is the first transverse girder 22a and the other transverse girder 22 is the second transverse girder 22b, and this is a combination and transport step S01 of the composite structure.

[0043] It must be explained in this step that the float 21 and the composite 20 may be transported by tugboat to the area above the planned construction site, or they may be transported by transport ship to the area above the planned construction site.

[0044] Float positioning step S02 controls the sinking of the two floats 21 and moves each of the two floats 21 to the lower ends of the composite 20.

[0045] The complex support step S03 involves controlling the floating of the two floats 21 to overlap and connect the overlapping connection portions 221 at both ends of the first transverse girder 22a within the complex 20 onto the transverse girder connection portions 211 at one longitudinal end of each of the two floats 21, and supporting the overlapping connection portions 221 at both ends of the second transverse girder 22b on the transverse girder moving support members 215 of the two floats 21, thereby installing the large traveling vehicle 11 of the leveling device 1 between the two floats 21 and connecting the integrally overlapping connection portions 221 and the transverse girder connection portions 211; It should be noted that this step further includes a position adjustment step S031 for the transverse beam movement support member 215, which positions the transverse beam movement support member 215 directly below the overlapping connection portion 221 of the second transverse beam 22b, before controlling the floating of the two floats 21. When controlling the floating of the two floats 21 in step S03, the floats 21 are first floated until the top of the transverse beam connection portion 211 at one of the longitudinal ends of the floats 21 contacts the bottom of the overlapping connection portion 221 of the first transverse beam 22a in the composite 20, and the top of the transverse beam movement support member 215 of the floats 21 contacts the bottom of the overlapping connection portion 221 of the second transverse beam 22b, and the overlapping connection portion 221 of the first transverse beam 22a is first connected to the transverse beam connection portion 211 of the two floats 21, and then the two floats 21 are controlled to continue floating and support the composite on the two floats 21. When controlling the floating of the two floats 21, the transverse girder connection portion 211 of the float 21 is moved into the recess of the first transverse girder 22a, and the position of the transverse girder connection portion 211 within the recess is limited by the position limiting member 222.

[0046] Step S04, which deforms the composite to assemble the integrated barge, involves disconnecting the connection between the second transverse girder 22b and the leveling device 1, moving the second transverse girder 22b to the longitudinal end of the float 21 furthest from the first transverse girder 22a via the transverse girder moving support member 215, overlapping and connecting the overlapping connection parts 221 at both ends of the second transverse girder 22b onto the transverse girder connection parts 211 at the ends of the two floats 21, connecting the integrally overlapped connection parts 221 and the transverse girder connection parts 211, disconnecting the connection between the leveling device 1 and the first transverse girder 22a, and completing the assembly of the integrated barge.

[0047] It must be explained in this step that the mooring cable 42 is wound up by a mooring winch 41 installed on the second transverse beam 22b, thereby enabling the movement of the second transverse beam 22b. It must also be explained that before moving the second transverse beam 22b, an adjustment cable 72 is connected between the adjustment winches 71 at the corresponding ends of the two transverse beams 22, and two adjustment devices 7 are assembled between the ends of the transverse beams 22. When moving the second transverse beam 22b, the adjustment winch 71 located on the first transverse beam 22a within the adjustment device 7 loosens the adjustment cable 72, and the adjustment winch 71 located on the second transverse beam 22b winds up the adjustment cable 72. The speed at which the adjustment winches 71 in the two adjustment devices 7 loosen and wind up the adjustment cable 72 controls the direction of movement of the second transverse beam 22b.

[0048] In some embodiments, the crushed stone foundation leveling work S1 includes a leveling step S11 for the foundation within the area enclosed by the moonpool 202, and a small vehicle 12 is in a non-working state, and the leveling execution mechanism 13 is in a first rotate Move to position 1101, and the leveling execution mechanism 13 will move via the small vehicle 12 to the first rotate At position 1101, relative to the large moving vehicle 11 rotate This switches the system to work mode, and the movement of the large vehicle 11 along the longitudinal direction relative to the hull 2 ​​and the movement of the small vehicle 12 along the large vehicle 11 adjust the working position of the leveling execution mechanism 13, and leveling work is performed on the foundation within the area enclosed by the moonpool 202.

[0049] In some embodiments, the crushed stone foundation leveling work S1 further includes a leveling step S12 for the foundation outside the area enclosed by the moonpool 202, and a small vehicle 12 is used to perform a leveling execution mechanism 13 in a non-working state. rotate Move to position 1102, and the leveling execution mechanism 13 moves via the small vehicle 12 to the second rotate At position 1102, relative to the large moving vehicle 11 rotate This switches the system to work mode, and the movement of the large vehicle 11 along the longitudinal direction relative to the hull 2 ​​adjusts the working position of the leveling execution mechanism 13, allowing leveling work to be performed on the foundation outside the area enclosed by the moonpool 202.

[0050] In some embodiments, the construction method of the immersed tunnel is performed by the leveling execution mechanism 13. rotate Method S3 further includes, rotate Method S3 is the process by which the leveling execution mechanism 13 changes from a non-working state to a working state. rotate do rotate Method S31, and from working state to non-working state rotate The rotation method S32 includes, From non-working state to working state rotate do rotate Method S31 involves the first hoisting machine 141 loosening the first towing rope 142, and under the gravitational action of the leveling mechanism 13, the leveling mechanism 13 and the small vehicle 12 move in a plane perpendicular to the large vehicle 11, with the axle of the small track wheel 121 as the axis, until the leveling mechanism 13 is vertical. rotate This includes the step of entering the working state, From working state to non-working state rotate do rotate Method S21 involves the first hoisting machine 141 winding up the first towing rope 142, and under the tensile force of the first towing rope 142, the leveling mechanism 13 and the small vehicle 12 move around the axle of the small track wheel 121, with the leveling mechanism 13 moving up to the moonpool 202. rotate Until then, in a plane perpendicular to the large moving vehicle 11 rotate This includes a step of entering a non-working state.

[0051] In some embodiments, the leveling step S11 for the foundation within the area enclosed by the moonpool 202 is, specifically, a small vehicle 12 to perform a leveling execution mechanism 13 in a non-working state. rotate Move to position 1101, connect the end of the first towing rope 142 furthest from the first hoisting machine 141 to the top of the leveling execution mechanism 13, the first hoisting machine 141 slackens the first towing rope 142, and under the gravitational force of the leveling execution mechanism 13, the leveling execution mechanism 13 moves the small vehicle 12 to the first rotate Until the leveling mechanism 13 is vertical at position 1101, in a plane perpendicular to the large vehicle 11 rotate Then, entering the working state, the large vehicle 11 moves along the longitudinal direction relative to the hull 2, and the small vehicle 12 moves along the large vehicle 11, thereby adjusting the working position of the leveling execution mechanism 13, and performing leveling work on the foundation within the area enclosed by the moonpool 202. After the leveling work, the first hoisting machine 141 winds up the first towing rope 142, and under the action of the tensile force of the first towing rope 142, the leveling execution mechanism 13 moves the small vehicle 12, and the leveling execution mechanism 13 moves up to above the moonpool 202. rotate Until then, in a plane perpendicular to the large moving vehicle 11 rotate This includes entering a non-working state.

[0052] In some embodiments, the leveling step S12 for the foundation outside the area enclosed by the moonpool 202 is, specifically, performed by wrapping one end of the first towing rope 142, furthest from the first hoist 141, around the first towing wheel 144 and connecting it to the side of the small vehicle 12 away from the first hoist 141, and the first hoist 141 pulling the small vehicle 12 by winding up the first towing rope 142, thereby moving the non-working leveling execution mechanism 13 along the second vehicle 11 rotate Move to position 1102, connect the end of the first towing rope 142 furthest from the first hoisting machine 141 to the top of the leveling execution mechanism 13, and the first hoisting machine 141 slackens the first towing rope 142, and under the gravitational force of the leveling execution mechanism 13, the leveling execution mechanism 13 moves the small vehicle 12, and the second rotate Until the leveling mechanism 13 is vertical at position 1102, in a plane perpendicular to the large vehicle 11 rotateThen, entering the work state, the large vehicle 11 moves along the longitudinal direction relative to the hull 2 ​​to adjust the working position of the leveling execution mechanism 13, and performs leveling work on the foundation outside the area enclosed by the moonpool 202. After the leveling work, the first hoisting machine 141 winds up the first towing rope 142, and under the action of the tensile force of the first towing rope 142, the leveling execution mechanism 13 moves the small vehicle 12, and the leveling execution mechanism 13 moves up to above the moonpool 202. rotate Until then, in a plane perpendicular to the large moving vehicle 11 rotate This includes entering a non-working state.

[0053] Through the description of several embodiments of the barge and immersed tunnel construction method that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section, it will be clear that the embodiments of the barge and immersed tunnel construction method that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section have at least one of the following advantages. 1. The barge provided in this application, which integrates the leveling of the crushed stone foundation and the installation of the immersed tunnel section, combines the functions of leveling the crushed stone foundation and installing the immersed tunnel section into one unit. Since it can perform two construction processes, leveling the crushed stone foundation and installing the immersed tunnel section, it significantly reduces the number of vessels required at the immersed tunnel construction site, effectively avoiding the problem of interference with cable system layout and work surfaces caused by the large number of vessels. 2. In the barge provided in this application, which integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, the large traveling vehicle 11 of the leveling device 1 has a first above the moonpool. rotate The position was set up, and the second one was located outside the moonpool. rotate The position is set, and the first leveling execution mechanism 13 is performed rotate Position and second rotate location rotate The work then begins, and by performing leveling work on the foundation below the area surrounded by the moon pool and on the foundation in a small area outside the area surrounded by the moon pool, the leveling efficiency and leveling area are greatly increased, and the leveling execution mechanism 13 is second rotate location rotateBy entering the work state in this manner, it becomes possible to perform land leveling work in construction areas where land leveling vessels cannot enter, thus giving it a wide range of applications. 3. The barge provided in this application, which integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, employs an assembly structure in its hull 2, reducing the requirements for water depth, channel width, and clearance height of the waterway within the construction area, enabling construction in a limited construction area, meeting the construction requirements within the Class 4 waterway area of ​​inland rivers, and thus having a wide range of applications. 4. In the construction method for immersed tunnels provided in this application, both the preparation of the crushed stone foundation and the installation of the immersed tunnel section are carried out by a barge that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section. Since the preparation execution mechanism 13 switches from the working state to the non-working state, the immersed tunnel section installation can be carried out directly after the preparation of the crushed stone foundation is completed, resulting in high construction efficiency, a short cycle, and low construction costs.

[0054] Finally, it should be noted that each example in this specification is described progressively, and each example focuses on aspects that differentiate it from the others. Parts that are identical or similar between the examples can be referenced to one another.

[0055] The above embodiments illustrate, but do not limit, the technical methods of the present application. While the present application is described in detail with reference to preferred embodiments, those skilled in the art should understand that they may continue to modify the specific embodiments of the present application or make equivalent substitutions for some of the technical features, but this will not deviate from the spirit of the technical methods of the present application and will all fall within the scope of the technical methods for which protection is sought.

Claims

1. In a barge that integrates the leveling of the crushed stone foundation and the installation of the immersed tunnel section, With the long side as the vertical direction, two floats are installed side by side horizontally, It includes two transverse beams that are installed between the two floats along the transverse direction, each located at the longitudinal ends of the floats, The space located below the transverse beam and between the two floats is used to house the immersed tunnel section, and the hollow region surrounded by the two floats and the two transverse beams constitutes a moonpool in the hull. A large traveling vehicle is installed between the two floats along the transverse direction and located above the moonpool, and moves relative to the floats between the two transverse girders along the longitudinal direction, A small vehicle is connected to a large vehicle, moves along the large vehicle, and rotates relative to the large vehicle. It includes a ground leveling mechanism used for leveling foundations, which is attached to the small vehicle and can be raised and lowered relative to the small vehicle, The aforementioned ground leveling mechanism switches between working and non-working states by rotating relative to the large vehicle via the small vehicle. When in working mode, the ground leveling mechanism is installed perpendicular to the moonpool and performs ground leveling work. When in non-working mode, the ground leveling mechanism rotates above the moonpool. It includes a burial chamber suspension device installed on two of the transverse beams, used to connect the burial chambers in the space located below the transverse beams, and to control the burial of the burial chambers, A first rotation position is provided in the portion of the large vehicle located directly above the moonpool, the ground leveling mechanism rotates relative to the large vehicle at the first rotation position via the small vehicle, and when the ground leveling mechanism switches to the working state at the first rotation position, the ground leveling mechanism penetrates the moonpool and performs ground leveling work on the foundation within the area enclosed by the moonpool. Furthermore, one end of the large vehicle extends outside the moonpool, and a second rotation position is provided in the portion of the large vehicle extending from the moonpool. The leveling mechanism rotates relative to the large vehicle at the second rotation position via the small vehicle, and when the leveling mechanism switches to the working state at the second rotation position, the leveling mechanism is positioned outside the moonpool and performs leveling work on foundations outside the area enclosed by the moonpool. A barge that integrates the leveling of the crushed stone foundation with the installation of the immersed tunnel section.

2. The large track includes two track girders installed opposite each other, and a first track extending laterally is provided on the opposing sides of the two track girders. Small track wheels are provided on both sides of the small track, each of which is rotatably connected to the two first tracks. There are two small track wheels rotatably connected to each first track, which are the first small track wheel and the second small track wheel. A position-limiting assembly that limits the position of the first small track wheel to the first or second rotation position is detachably connected to the portion of each track girder corresponding to the first rotation position and / or the second rotation position. A barge integrating the leveling of a crushed stone foundation and the installation of a submerged tunnel, as described in claim 1, wherein a notch is provided in the portion of each track girder corresponding to the first rotation position and / or the second rotation position for the second small track wheel to move out of the first track, the notch is located above the first track and is in communication with the first track, and when the small vehicle rotates, the second small track wheel, whose position is not limited, passes through the notch as the small vehicle rotates, with the wheel axle of the first small track wheel, whose position is limited by the position limiting assembly, as the small vehicle rotates.

3. A barge integrating the leveling of a crushed stone foundation and the installation of a submerged tunnel, as described in claim 2, further comprising a drive mechanism for driving the rotation of the leveling execution mechanism, the drive mechanism comprising a first hoisting machine installed on the large vehicle and a first traction rope connected between the first hoisting machine and the top of the leveling execution mechanism, wherein the first hoisting machine slackens the first traction rope, thereby rotating the leveling execution mechanism and the small vehicle, and switching the leveling execution mechanism between an operating state and a non-operating state.

4. The barge for integrating the leveling of a crushed stone foundation and the installation of a submerged tunnel, as described in claim 3, further comprising a reaction force frame connected to the large traveling vehicle, wherein the first towing rope is wrapped around the reaction force frame from below.

5. A barge integrating the leveling of a crushed stone foundation and the sinking of a immersed tunnel section, as described in claim 4, characterized in that the first hoisting machine is installed at one end of the large traveling vehicle that is farther from the second rotation position, the reaction frame is movable along the large traveling vehicle, when the leveling execution mechanism rotates at the first rotation position the reaction frame is limited to a position close to the first hoisting machine, and when the leveling execution mechanism rotates at the second rotation position the reaction frame is limited to a position close to the first rotation position.

6. The drive mechanism is further used to drive the leveling execution mechanism to move it from the first rotation position to the second rotation position, and the drive mechanism further includes a first towing wheel installed at the lateral end of the large vehicle near the second rotation position, and when the drive mechanism is used to drive the movement of the leveling execution mechanism, one end of the first towing rope furthest from the first hoisting machine is wrapped around the first towing wheel and connected to the side of the small vehicle away from the first hoisting machine, and the first hoisting machine winds up the first towing rope, thereby moving the leveling execution mechanism and the small vehicle along the large vehicle from the first rotation position to the second rotation position, characterized in that a barge integrating leveling of a crushed stone foundation and sinking of a sunken tunnel is provided according to claim 3.

7. A barge integrating the leveling of a crushed stone foundation and the installation of a submerged tunnel, as described in claim 1, characterized in that the float is detachably connected to the transverse beam, and when the float is detached from the transverse beam, the leveling device and the two transverse beams are detachably connected to form a composite, within the composite, the leveling device is located between the two transverse beams, and within the leveling device, the leveling execution mechanism is switched to a non-working state.

8. The float includes transverse girder connection portions located at both longitudinal ends and a support portion connected between the two transverse girder connection portions, and the transverse girder is provided with overlapping connection portions at both ends for overlapping connection with the two transverse girder connection portions at the corresponding ends of the two floats, the overlapping connection portions are detachably connected to the transverse girder connection portions, the support portion is provided with a second track and a third track extending in the longitudinal direction, a transverse girder movement support member is slidably connected on the second track, the transverse girder movement support members of the two floats are used to support the transverse girder when the overlapping connection portions of the transverse girder are not overlapping connection with the transverse girder connection portions of the floats, and to move the transverse girder supported by them along the longitudinal direction, and a large track wheel is provided at the bottom of the large vehicle that is aligned with the third track, and the large track wheel is connected to the bottom of the large vehicle by a lifting member, characterized in that the barge integrates the leveling of a crushed stone foundation and the sinking of a immersed tunnel.

9. The structure further includes a transverse beam moving mechanism, the two floats having first and second ends in their longitudinal directions, the transverse beam closer to the first end of the float is the first transverse beam, and the transverse beam closer to the second end of the float is the second transverse beam, the transverse beam moving mechanism is used to move the second transverse beam to the second end of the float after the composite structure has been separated when supporting the composite structure between the first ends of the two floats, and a set of the transverse beams is provided between the second ends of the two floats and the second transverse beam. A barge that integrates leveling of a crushed stone foundation and sinking of a immersed tunnel section, as described in claim 7, characterized in that a transverse beam moving mechanism is provided, each transverse beam moving mechanism includes a second towing wheel, a transverse beam moving winch, and a second towing rope, the second towing wheel being installed at the second end of the float, the transverse beam moving winch being installed on the second transverse beam, one end of the second towing rope being connected to the transverse beam moving winch, and the other end of the second towing rope being wrapped around the second towing wheel and connected to the second transverse beam.

10. The barge for integrating the leveling of a crushed stone foundation and the installation of an immersed tunnel, as described in claim 1, wherein the immersed tunnel suspension device includes a plurality of dropping winches and a plurality of mounting winches arranged on two crossbeams, the dropping winches are connected to dropping cables for dropping the immersed tunnel, and the mounting winches are connected to mounting cables for adjusting the position and angle of the immersed tunnel.

11. In a construction method for an immersed tunnel, the construction is carried out using a barge that integrates the preparation of the crushed stone foundation and the installation of the immersed tunnel section as described in any one of claims 1 to 10, and the construction method includes crushed stone foundation preparation work and immersed tunnel section installation work. The crushed stone foundation leveling work includes the following: the leveling execution mechanism rotates relative to the large vehicle via the small vehicle to switch to the working state; the working position of the leveling execution mechanism is adjusted by the vertical movement of the large vehicle relative to the float and the movement of the small vehicle along the large vehicle; and leveling work is performed on the crushed stone foundation. The immersed tunnel installation work is characterized by the following steps: the leveling execution mechanism is switched to the non-working state by rotation of the large vehicle via the small vehicle; the immersed tunnel suspension device connects the undropped immersed tunnel to the space located below the crossbeam, between the two floats; the immersed tunnel suspension device drops the immersed tunnel; and the position and angle of the immersed tunnel are adjusted to complete the installation of the immersed tunnel. Construction methods for immersed tunnels.

12. A first rotation position is provided in the portion of the large vehicle located directly above the moonpool, and the crushed stone foundation leveling work includes leveling work steps for the foundation within the area enclosed by the moonpool. The small vehicle moves the ground leveling execution mechanism, which is in a non-working state, to a first rotation position, the ground leveling execution mechanism switches to the working state by rotating relative to the large vehicle at the first rotation position via the small vehicle, and the working position of the ground leveling execution mechanism is adjusted by the movement of the large vehicle along the longitudinal direction relative to the hull and the movement of the small vehicle along the large vehicle, thereby performing ground leveling work on the foundation within the area enclosed by the moonpool. The method for constructing an immersed tunnel according to claim 11.

13. One end of the large vehicle extends outside the moonpool, and a second rotation position is provided in the portion of the large vehicle extending outside the moonpool, and the crushed stone foundation leveling work further includes leveling work steps for the foundation outside the area enclosed by the moonpool, The small vehicle moves the ground leveling execution mechanism, which is in a non-working state, to the second rotation position, the ground leveling execution mechanism switches to the working state by rotating relative to the large vehicle at the second rotation position via the small vehicle, and the working position of the ground leveling execution mechanism is adjusted by the movement of the large vehicle along the longitudinal direction relative to the hull, thereby performing ground leveling work on the foundation outside the area enclosed by the moonpool. The method for constructing an immersed tunnel according to claim 12.

14. In the barge that integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel, the large traveling vehicle includes two opposing track girders, each of which has a first track extending laterally along its opposing sides, and each of the small traveling vehicle has small track wheels that are rotatably connected to the two first tracks, and the barge that integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel further includes a drive mechanism that drives the rotation of the leveling execution mechanism, the drive mechanism includes a first hoisting machine installed on the large traveling vehicle and a first traction rope connected between the first hoisting machine and the top of the leveling execution mechanism, The construction method further includes a method for rotating the ground leveling mechanism, the rotation method including a switching method for switching the ground leveling mechanism from a non-working state to a working state, and a switching method for switching the ground leveling mechanism from a working state to a non-working state. The method for switching from a non-working state to a working state includes the step of the first hoisting machine loosening the first towing rope, and under the gravitational action of the leveling mechanism, the leveling mechanism and the small vehicle rotate relative to the large vehicle around the wheel axle of the small track wheels until the leveling mechanism is perpendicular to the moonpool, thereby entering the working state. The method for switching from an operating state to a non-operating state is characterized by including the step of the first hoisting machine winding up the first towing rope, and under the action of the tensile force of the first towing rope, the leveling execution mechanism and the small vehicle rotating relative to the large vehicle around the wheel axle of the small track wheel until the leveling execution mechanism rotates above the moonpool, thereby entering the non-operating state. The method for constructing an immersed tunnel according to claim 11.

15. In the barge that integrates the leveling of the crushed stone foundation and the sinking of the immersed tunnel section, the float and the transverse beam are detachably connected, and when the float and the transverse beam are separated, the leveling device and the two transverse beams are detachably connected to form a composite structure, within the composite structure the leveling device is located between the two transverse beams, and within the leveling device the leveling execution mechanism is rotated to a non-working state, the float includes transverse beam connection parts located at both longitudinal ends and a support part connected between the two transverse beam connection parts, and each end of the transverse beam has a weight for overlapping connection with the two transverse beam connection parts at the corresponding ends of the two floats. A connecting portion is provided, the overlapping connecting portion and the transverse girder connecting portion are detachably connected, the support portion is provided with a second track and a third track extending in the longitudinal direction, a transverse girder movement support member is slidably connected on the second track, the transverse girder movement support members of the two floats are used to support the transverse girder when the overlapping connecting portion of the transverse girder is not overlapped with the transverse girder connecting portion of the float, and to move the transverse girder they support along the longitudinal direction, a large track wheel is provided at the bottom of the large vehicle that aligns with the third track, and the large track wheel is connected to the bottom of the large vehicle by a lifting member, The construction method for the immersed tunnel further includes an assembly step of a single-piece barge, and the assembly step of the single-piece barge is By connecting the non-working leveling device between the two transverse beams to form a composite structure, the composite structure and the two floats are moved above the planned construction area, with one transverse beam being the first transverse beam and the other being the second transverse beam. Controlling the sinking of the two floats and moving each of the two floats to the lower ends of the composite, The floating of the two floats is controlled so that the overlapping connection portions at both ends of the first transverse girder within the composite are overlapped and connected onto the transverse girder connection portions at one longitudinal end of each of the two floats, and the overlapping connection portions at both ends of the second transverse girder are supported on the transverse girder moving support members of the two floats, and the large traveling vehicle of the leveling device is erected between the two floats, and the integrally overlapped connection portions and the transverse girder connection portions are connected, The assembly of the integrated barge includes disconnecting the connection between the second transverse beam and the leveling device, moving the second transverse beam to the longitudinal end of the float furthest from the first transverse beam using the transverse beam moving support member, overlapping and connecting the overlapping connection portions at both ends of the second transverse beam onto the transverse beam connection portions at the ends of the two floats, connecting the integrally overlapped overlapping connection portions to the transverse beam connection portions, and disconnecting the connection between the leveling device and the first transverse beam, The method for constructing an immersed tunnel according to claim 11.

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