Rock bed leveling and sinking pipe sinking installation integrated barge and sinking pipe tunnel construction method

Abstract

The present application relates to a kind of rock bed leveling and immersed tube installation integrated barge and immersed tube tunnel construction method, belong to immersed tube tunnel construction technical field.The integrated barge includes hull, leveling device and immersed tube lifting device;Hull includes two floating bodies and two cross beams, and the space between the two floating bodies below and located is used to accommodate immersed tube, and the hollowed-out area surrounded by two floating bodies and two cross beams constitutes moon pool;Leveling device includes travelling cart, travelling trolley and leveling actuator, and leveling actuator is flipped in vertical plane by travelling trolley relative to travelling cart, to make leveling actuator convert between working state and non-working state;Immersed tube lifting device is used to connect the immersed tube in the space below cross beam, and control the installation of immersed tube sinking.The integrated barge integrates rock bed leveling and immersed tube installation function, can effectively reduce the ship configuration of immersed tube tunnel construction site, improve construction efficiency, reduce construction cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of immersed tunnel construction, and particularly relates to a gravel bed leveling and immersed tube sinking and installing integrated barge and an immersed tunnel construction method. BACKGROUND

[0002] As a kind of underwater large tunnel engineering, immersed tunnel has the characteristics of large selection range of tunnel section shape, low requirement for foundation, shallow burial depth which can effectively shorten the route length, and parallel operation of pipe joint construction process, and is particularly suitable for soft foundation, river bed or seabed and other engineering sites that can be easily excavated by water dredging facilities, and is widely used in cross-sea, cross-river and cross-river engineering.

[0003] Gravel bed leveling and immersed tube sinking and installing are two important processes of immersed tunnel construction, which directly affect the construction quality and safety of immersed tube pipe joints. At present, the gravel bed leveling operation of the immersed tube needs to use a special platform leveling ship (see patent CN103924597A) or a floating leveling ship (see patent CN109898514A), and the sinking and installing operation of the immersed tube needs to use a separate sinking barge or a self-propelled floating installation integrated ship (see patent CN106516021A). The construction equipment configuration required for the two construction processes is more, and only the construction can be carried out in the sea or in the larger navigable channel of the first and second class. In the limited construction water area, such as the fourth class channel (500-ton navigable, water depth between 2.5-3.2m, bottom width between 40-45m), the ship size cannot meet the navigation requirements when the above construction ships are used for gravel bed leveling and immersed tube sinking and installing construction respectively, and cannot be towed into the field. Moreover, in the limited construction water area, the cable arrangement and operation area will be greatly disturbed, the construction risk is large, and the construction efficiency is low. In order to reduce the requirement for water depth and width of the channel, a combined immersed tube transportation and installation barge (see patent CN110053720A) has been developed for immersed tube sinking and installing construction. However, this still cannot solve the problems of multiple construction equipment configuration, cable arrangement and operation area disturbance in the two construction processes of gravel bed leveling and immersed tube sinking and installing construction.

[0004] Therefore, how to reduce the ship configuration of the immersed tunnel construction site to adapt to the limited construction water area is a technical problem to be solved at present. SUMMARY

[0005] In view of the above technical problems, the present application provides a gravel bed leveling and immersed tube sinking and installing integrated barge and an immersed tunnel construction method. The integrated barge integrates the functions of gravel bed leveling and immersed tube sinking and installing, can effectively reduce the ship configuration of the immersed tunnel construction site, improve the construction efficiency, and reduce the construction cost.

[0006] The application provides a rock bed leveling and immersed tube laying integrated barge, comprising:

[0007] A ship body comprising:

[0008] Two floating bodies, the length direction of the floating bodies being longitudinal, the two floating bodies being arranged side by side in the transverse direction;

[0009] Two cross beams, the two cross beams being arranged between the two floating bodies in the transverse direction, the two cross beams being located at the longitudinal ends of the floating bodies respectively;

[0010] The space below the cross beams and between the two floating bodies is used for accommodating the immersed tube, and the hollow region surrounded by the two floating bodies and the two cross beams constitutes a moon pool;

[0011] A leveling device comprising:

[0012] A traveling gantry arranged between the two floating bodies in the transverse direction and above the moon pool, the traveling gantry moving relative to the floating bodies in the longitudinal direction between the two cross beams;

[0013] A traveling trolley connected to the traveling gantry, the traveling trolley moving along the traveling gantry and being flipped in the vertical plane relative to the traveling gantry;

[0014] A leveling actuator for leveling the bed, the leveling actuator being installed on the traveling trolley and being capable of being raised and lowered relative to the traveling trolley;

[0015] The leveling actuator is flipped in the vertical plane relative to the traveling gantry by the traveling trolley, so that the leveling actuator is switched between a working state and a non-working state; in the working state, the leveling actuator is arranged vertically to perform the leveling work; in the non-working state, the leveling actuator is flipped above the moon pool;

[0016] An immersed tube lifting and laying device arranged on the two cross beams, the immersed tube lifting and laying device being used for connecting the immersed tube in the space below the cross beams and controlling the laying of the immersed tube.

[0017] In some embodiments, the traveling gantry is provided with a first flipping position at the part of the traveling gantry above the moon pool, the leveling actuator being flipped relative to the traveling gantry by the traveling trolley at the first flipping position; when the leveling actuator is switched to the working state at the first flipping position, the leveling actuator passes through the moon pool to perform the leveling work on the bed within the surrounding range of the moon pool.

[0018] In some embodiments, one end of the traveling gantry extends outside the moon pool, the traveling gantry being provided with a second flipping position at the part of the traveling gantry extending outside the moon pool, the leveling actuator being flipped relative to the traveling gantry by the traveling trolley at the second flipping position; when the leveling actuator is switched to the working state at the second flipping position, the leveling actuator is located outside the moon pool to perform the leveling work on the bed outside the surrounding range of the moon pool.

[0019] In some embodiments, the walking bogie comprises two track beams arranged oppositely, each of the two track beams is provided with a first track extending in the transverse direction on the opposite side; the walking bogie is provided with bogie track wheels on two sides respectively, each of the two sides is provided with two bogie track wheels in rolling connection with the two first tracks; each track beam is detachably connected with a limiting assembly for limiting one bogie track wheel at the first turnover position or the second turnover position, and each track beam is further provided with a gap for the other bogie track wheel to turn out of the first track at the first turnover position and / or the second turnover position, the gap is located above the first track and communicates with the first track; when the walking bogie is turned over, the axis of the bogie track wheel limited by the limiting assembly is taken as the axis, and the other bogie track wheel is turned over through the gap.

[0020] In some embodiments, the floating body is detachably connected with the cross beam; when the floating body is detached from the cross beam, the flattening device is detachably connected with the two cross beams to form a combination, in which the flattening device is located between the two cross beams, and the flattening actuator is turned over to the non-working state in the flattening device.

[0021] In some embodiments, the floating body comprises cross beam connecting portions located at two longitudinal ends and a supporting portion connected between the two cross beam connecting portions; the two ends of the cross beam are provided with overlapping portions for overlapping with the two cross beam connecting portions of the corresponding ends of the two floating bodies respectively, and the overlapping portions are detachably connected with the cross beam connecting portions; the supporting portion is provided with a second track and a third track extending in the longitudinal direction, and the cross beam moving supporting member is slidingly connected with the second track; the cross beam moving supporting members of the two floating bodies are used for supporting the cross beam when the overlapping portions of the cross beam are not overlapped with the cross beam connecting portions of the floating bodies, and moving the supported cross beam in the longitudinal direction; the bottom of the walking bogie is provided with bogie track wheels matched with the third track, and the bogie track wheels are connected with the bottom of the walking bogie through lifting members.

[0022] In some embodiments, the immersed tube launching device comprises a plurality of sinking winches and a plurality of installation winches arranged on the two cross beams, the sinking winches are connected with sinking cables for sinking the immersed tube, and the installation winches are connected with installation cables for adjusting the position and angle of the immersed tube.

[0023] In some embodiments, the integral barge further comprises a mooring device, the mooring device comprises a plurality of mooring winches arranged on the two cross beams, each cross beam is provided with a mooring winch near the two ends, and the mooring winches are connected with mooring cables.

[0024] In addition, the application also provides an immersed tube tunnel construction method, which adopts the above-mentioned gravel bed flattening and immersed tube sinking and installing integral barge to perform gravel bed flattening construction and immersed tube sinking and installing construction.

[0025] The gravel base leveling construction comprises: the leveling execution mechanism is flipped by the walking trolley relative to the walking car to switch to the working state, the working position of the leveling execution mechanism is adjusted by moving the walking car along the longitudinal direction relative to the floating body and moving the walking trolley along the walking car, and the gravel base is leveled;

[0026] The immersed tube sinking installation construction comprises: the leveling execution mechanism is flipped by the walking trolley relative to the walking car to switch to the non-working state, the immersed tube to be sunk is connected below the cross beam and in the space between the two floating bodies by the immersed tube lifting device, and the position and angle of the immersed tube are adjusted by the immersed tube lifting device to complete the sinking installation of the immersed tube.

[0027] In some embodiments, the above-mentioned immersed tube tunnel construction method further comprises an integrated barge assembly step, and the integrated barge assembly step comprises:

[0028] The leveling device in the non-working state is connected between the two cross beams to form an assembly, and the assembly and the two floating bodies are moved above the area to be constructed; wherein one cross beam is a first cross beam, and the other cross beam is a second cross beam;

[0029] The two floating bodies are controlled to sink, and the two floating bodies are respectively moved below the two ends of the assembly;

[0030] The two floating bodies are controlled to float up, so that the overlapping portions at the two ends of the first cross beam in the assembly are respectively overlapped on the cross beam connecting portions at the longitudinal one end of the two floating bodies, the overlapping portions at the two ends of the second cross beam are respectively supported on the cross beam moving supports of the two floating bodies, the walking car of the leveling device is arranged between the two floating bodies, and the overlapping portions and the cross beam connecting portions overlapped together are connected;

[0031] The connection between the second cross beam and the leveling device is disconnected, the second cross beam is moved to the longitudinal end of the floating body away from the first cross beam by the cross beam moving support, the overlapping portions at the two ends of the second cross beam are respectively overlapped on the cross beam connecting portions at the end of the two floating bodies, the overlapping portions and the cross beam connecting portions overlapped together are connected, the connection between the leveling device and the first cross beam is disconnected, and the assembly of the integrated barge is completed.

[0032] Compared with the prior art, the advantages and positive effects of the present application are that:

[0033] 1、The integrated barge for gravel base leveling and immersed tube sinking installation provided by the present application integrates the functions of gravel base leveling and immersed tube sinking installation, can complete the two construction processes of gravel base leveling and immersed tube sinking installation, greatly reduces the ship configuration of the immersed tube tunnel construction site, and effectively avoids the problems of cable arrangement and operation surface interference caused by too many ships;

[0034] 2. The gravel bed leveling and immersed tube sinking and installing integrated barge provided by the application, the walking trolley of the leveling device is provided with a first overturning position above the moon pool and a second overturning position outside the moon pool, the leveling device is overturned into a working state by the leveling actuator at the first overturning position and the second overturning position, leveling construction of the bed under the moon pool and leveling construction of a small range of bed outside the moon pool are realized respectively, and the leveling efficiency and the leveling range are greatly improved; and the leveling device is overturned into a working state by the leveling actuator at the second overturning position, the moon pool cannot be entered into the construction area for leveling construction, and the application range is wide.

[0035] 3. The gravel bed leveling and immersed tube sinking and installing integrated barge provided by the application, the ship body adopts an assembled structure, the requirements for the water depth, the channel width and the clearance height of the construction area are reduced, the construction can be carried out in a limited construction water area, the construction requirements in the fourth-class channel area of the inland river can be met, and the application range is wide.

[0036] 4. The immersed tube tunnel construction method provided by the application, the gravel bed leveling construction and the immersed tube sinking and installing construction are completed by the gravel bed leveling and immersed tube sinking and installing integrated barge, the gravel bed leveling construction is completed, and then the immersed tube sinking and installing construction is directly carried out by the leveling actuator from the working state to the non-working state, the construction efficiency is high, the construction period is short, and the construction cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0038] Figure 1 The structural schematic view of the gravel bed leveling and immersed tube sinking and installing integrated barge provided by the application is shown in the figure;

[0039] Figure 2 The perspective view of the leveling device when the leveling actuator is located at the first overturning position and is in the working state in the embodiment of the application is shown in the figure;

[0040] Figure 3 The perspective view of the leveling actuator and the walking trolley in the embodiment of the application is shown in the figure;

[0041] Figure 4 The side view of the leveling device when the leveling actuator is located at the first overturning position and is in the working state in the embodiment of the application is shown in the figure;

[0042] Figure 5 The perspective view of the leveling device when the leveling actuator is located at the second overturning position and is in the working state in the embodiment of the application is shown in the figure; Figure 4 The enlarged view of the part B in the figure;

[0043] Figure 6This is a side view of the leveling device when the leveling actuator is in the first flip position and in a non-working state according to one embodiment of the present invention;

[0044] Figure 7 for Figure 6 A magnified view of a section at point C;

[0045] Figure 8 for Figure 1 A magnified view of a section at point A in the middle;

[0046] Figure 9 This is a perspective view of the leveling device when the leveling actuator is in the second flip position and in the working state according to one embodiment of the present invention;

[0047] Figure 10 for Figure 9 A magnified view of a section at point D;

[0048] Figure 11 This is a side view of the leveling device when the leveling actuator is in the second flip position and in the working state according to one embodiment of the present invention;

[0049] Figure 12 This is a side view of the leveling device when the leveling actuator is in the second flip position and in a non-working state according to one embodiment of the present invention;

[0050] Figure 13 This is a perspective view of the hull in one embodiment of the present invention;

[0051] Figure 14 This is a top view of the hull in one embodiment of the present invention;

[0052] Figure 15 This is a side view of the hull in one embodiment of the present invention;

[0053] Figure 16 for Figure 15 A magnified view of a section at point E in the middle;

[0054] Figure 17 This is a top view of the assembly in one embodiment of the present invention;

[0055] Figure 18 This is a front view of the assembly in one embodiment of the present invention;

[0056] Figure 19 This is a top view of the assembly supported at one longitudinal end of the float in one embodiment of the present invention;

[0057] Figure 20 This is a front view of the assembly supported at one longitudinal end of the float in one embodiment of the present invention;

[0058] Figure 21Figure 2 is a plan view of the crossbeam moving towards the other end of the floating body in one embodiment of the present application;

[0059] Figure 22 Figure 3 is a front view of the crossbeam moving towards the other end of the floating body in one embodiment of the present application;

[0060] Figure 23 Figure 4 is a plan view of the integrated barge assembled in one embodiment of the present application;

[0061] Figure 24 Figure 5 is a front view of the integrated barge assembled in one embodiment of the present application.

[0062] In the figure:

[0063] 1, leveling device; 2, hull; 3, sinking pipe lifting and placing device; 4, mooring device; 5, first connecting member; 6, second connecting member; 7, adjusting device;

[0064] 11, traveling large car; 12, traveling small car; 13, leveling execution mechanism; 14, overturning driving mechanism;

[0065] 111, track beam; 1111, first track; 112, car track wheel; 113, limiting assembly; 1131, limiting rod; 114, cover plate;

[0066] 121, small car track wheel;

[0067] 131, pipe; 132, leveling head; 133, lifting assembly; 1331, second winch; 1332, lifting rope;

[0068] 141, first winch; 142, overturning traction rope; 143, counterforce frame; 1431, frame body; 1432, counterforce frame track wheel;

[0069] 21, floating body; 211, crossbeam connecting part; 212, supporting part; 213, second track; 214, third track; 215, crossbeam moving supporting member; 22, crossbeam; 22a, first crossbeam; 22b, second crossbeam; 221, overlapping part; 222, limiting member;

[0070] 31, sinking winch; 32, installation winch;

[0071] 41, mooring winch; 42, mooring cable;

[0072] 71, adjusting winch; 72, adjusting cable;

[0073] a, notch. DETAILED DESCRIPTION

[0074] With reference to the accompanying drawings, the technical solutions in the embodiments will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0075] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0076] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0077] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0078] As shown in the accompanying drawings Figures 1-7As shown, in a schematic embodiment of the integrated barge for rock bed grading and immersed tube installation, the integrated barge for rock bed grading and immersed tube installation comprises a hull 2, a grading device 1 and an immersed tube installation device 3; the hull 2 comprises two floating bodies 21 and two crossbeams 22, the length direction of the floating body 21 is the longitudinal direction, the two floating bodies 21 are arranged side by side in the transverse direction, the two crossbeams 22 are arranged between the two floating bodies 21 in the transverse direction, and the two crossbeams 22 are respectively located at the longitudinal two ends of the floating body 21; wherein the space below the crossbeam 22 and between the two floating bodies 21 is used to accommodate the immersed tube, and the hollow area surrounded by the two floating bodies 21 and the two crossbeams 22 constitutes a moon pool; the grading device 1 comprises a walking gantry 11, a walking trolley 12 and a grading actuator 13, the walking gantry 11 is arranged between the two floating bodies 21 in the transverse direction and above the moon pool, the walking gantry 11 moves relative to the floating body 21 in the longitudinal direction between the two crossbeams 22, the walking trolley 12 is connected to the walking gantry 11, the walking trolley 12 moves along the walking gantry 11 and flips in the vertical plane relative to the walking gantry 11, and the grading actuator 13 is used for grading the bed and is installed on the walking trolley 12 and can be lifted relative to the walking trolley 12; wherein the grading actuator 13 flips in the vertical plane relative to the walking gantry 11 through the walking trolley 12, so as to switch the grading actuator 13 between the working state and the non-working state, in the working state, the grading actuator 13 is vertically arranged to perform the grading work, and in the non-working state, the grading actuator 13 is flipped above the moon pool; the immersed tube installation device 3 is arranged on the two crossbeams 22 and is used to connect the immersed tube in the space below the crossbeam 22 and control the installation of the immersed tube.

[0079] The integrated barge for rock bed grading and immersed tube installation can perform the rock bed grading work by flipping the grading actuator 13 to the vertical working state, and can accommodate the immersed tube in the space below the crossbeam 22 and between the two floating bodies 21 by flipping the grading actuator 13 to the non-working state above the moon pool of the hull 2, and then perform the installation of the immersed tube by the immersed tube installation device 3 carried on the hull 2, which integrates the functions of rock bed grading and immersed tube installation and can complete the two construction processes of rock bed grading and immersed tube installation, greatly reduces the ship configuration of the immersed tube tunnel construction site, and effectively avoids the problems of cable arrangement and operation surface interference caused by too many ships. Moreover, the integrated barge for rock bed grading and immersed tube installation integrates the functions of rock bed grading and immersed tube installation, can directly perform the installation of the immersed tube after completing the rock bed grading construction, has simple ship scheduling, significantly improves the construction efficiency, and reduces the construction cost. In addition, when the grading actuator 13 is flipped to the non-working state above the moon pool of the hull 2, the overall height of the integrated barge for rock bed grading and immersed tube installation is relatively low, which reduces the requirements for the water depth and the clearance height of the construction area, can perform the construction in limited construction water area, and has a wide range of applications.

[0080] As shown in Figure 2 , Figure 4 and Figure 6 , in the embodiment, the walking car 11 is provided with a first overturning position at a portion located directly above the moon pool, and the leveling execution mechanism 13 is overturned relative to the walking car 11 at the first overturning position through the walking trolley 12; when the leveling execution mechanism 13 is converted to a working state at the first overturning position, the leveling execution mechanism 13 passes through the moon pool to perform leveling work on the base bed within the surrounding range of the moon pool. By limiting the walking trolley 12 to overturn at the first overturning position, it is ensured that the leveling execution mechanism 13 can pass through the moon pool after overturning, so as to perform leveling work on the base bed within the surrounding range of the moon pool. It should be noted that the first overturning position is preferably located at the middle of the walking car 11, so as to avoid the floating body 21 of the ship body 2 from hindering the overturning of the leveling execution mechanism 13.

[0081] In order to facilitate leveling work on the portion outside the surrounding range of the moon pool, as shown in Figure 8 , Figure 9 , Figure 11 and Figure 12 , one end of the walking car 11 extends to outside the moon pool, and the portion of the walking car 11 extending outside the moon pool is provided with a second overturning position, and the leveling execution mechanism 13 is overturned relative to the walking car 11 at the second overturning position through the walking trolley 12; when the leveling execution mechanism 13 is converted to a working state at the second overturning position, the leveling execution mechanism 13 is located outside the moon pool to perform leveling work on the base bed outside the surrounding range of the moon pool. Through the second overturning position provided outside the moon pool, the leveling execution mechanism 13 is overturned outside the moon pool into a working state, which is matched with the overturning of the leveling execution mechanism 13 at the first overturning position above the moon pool into a working state, so as to not only perform leveling on the base bed below the surrounding range of the moon pool, but also perform leveling on the small-range base bed outside the surrounding range of the moon pool, thereby greatly improving the leveling efficiency and leveling range; and by overturning the leveling execution mechanism 13 at the second overturning position into a working state, leveling construction can be performed on the construction area (such as the gravel base bed in the prefabrication dock) which the leveling ship cannot enter, thereby having a wide range of applications.

[0082] The specific overturning mode of the walking trolley 12 relative to the walking car 11 will be described below:

[0083] As shown in Figures 2-7As shown, the walking trolley 11 includes two track beams 111 arranged oppositely, and the opposite sides of the two track beams 111 are both provided with a first track 1111 extending in the transverse direction; the walking trolley 12 is provided with a trolley track wheel 121 on each side in rolling connection with two first tracks 1111, and there are two trolley track wheels 121 in rolling connection with each first track 1111; each track beam 111 is detachably connected with a limiting assembly 113 for limiting one trolley track wheel 121 at the first turnover position, and each track beam 111 is also provided with a gap a at the first turnover position for the other trolley track wheel 121 to turn out of the first track 1111, and the gap a is located above the first track 1111 and communicates with the first track 1111; when the walking trolley 12 is turned over, the axle of the trolley track wheel 121 limited by the limiting assembly 113 is used as the axis, and the other trolley track wheel 121 passes through the gap a when the walking trolley 12 is turned over. In this embodiment, the trolley track wheels 121 arranged on both sides of the walking trolley 12 cooperate with the first tracks 1111 of the two track beams 111 of the walking trolley 11, which can realize the movement of the walking trolley 12 along the walking trolley 11, and can realize the turnover of the walking trolley 12 relative to the walking trolley 11 with the axle of the trolley track wheel 121 as the axis; at the same time, the limiting assembly 113 is arranged to limit the position of one trolley track wheel 121, so that the walking trolley 12 can be limited at the turnover position, and the other trolley track wheel 121 can turn out of the first track 1111 through the gap a when the walking trolley 12 is turned over, so that the turnover of the walking trolley 12 is realized on the premise of ensuring the stability of the movement of the walking trolley 12 along the walking trolley 11 by the movement of the two trolley track wheels 121 along the first track 1111, and the turnover structure is simple. Similarly, as shown in the second turnover position, the limiting assembly 113 and the gap a are also arranged to realize the same turnover mode. It should be noted that the walking trolley 12 can drive the trolley track wheel 121 to rotate by the self-provided power equipment, so that the walking trolley 12 drives the leveling execution mechanism 13 to move along the walking trolley 11; when the walking trolley 12 is not provided with power equipment or lacks power, the power equipment arranged additionally can also pull the walking trolley 12 and the leveling execution mechanism 13 to move along the walking trolley 11. Figure 8 As shown, in the second turnover position, the limiting assembly 113 and the gap a are also arranged to realize the same turnover mode. It should be noted that the walking trolley 12 can drive the trolley track wheel 121 to rotate by the self-provided power equipment, so that the walking trolley 12 drives the leveling execution mechanism 13 to move along the walking trolley 11; when the walking trolley 12 is not provided with power equipment or lacks power, the power equipment arranged additionally can also pull the walking trolley 12 and the leveling execution mechanism 13 to move along the walking trolley 11.

[0084] Specifically, as shown in Figure 5As shown, in the embodiment, the limiting assembly 113 specifically includes a pair of limiting rods 1131, and when the trolley track wheel 121 is to be limited, the pair of limiting rods 1131 are respectively located at the two sides of the trolley track wheel 121 and abut against the two sides of the trolley track wheel 121. The pair of limiting rods 1131 are used as the limiting assembly 113, and by limiting the trolley track wheel 121 between the two limiting rods 1131, the walking trolley 12 can be limited in the first overturning position or the second overturning position, and the structure is simple and convenient to operate.

[0085] Further, as shown in Figure 5 , the gap a is provided with a cover plate 114 for opening or shielding the gap a, and the cover plate 114 is detachably connected to the gap a. By providing the cover plate 114, the gap a can be opened when the walking trolley 12 needs to be overturned, and during the movement of the walking trolley 12 along the walking cart 11, the gap a is shielded by the cover plate 114 to keep the top of the first track 1111 closed, preventing foreign matter from falling into the first track 1111 and affecting the movement of the walking trolley 12.

[0086] It should be further noted that in order to facilitate the driving of the overturning of the leveling execution mechanism 13 relative to the walking cart 11, as shown in Figure 2 and Figure 9 , in the embodiment, the walking cart 11 is provided with an overturning driving mechanism 14 for driving the overturning of the leveling execution mechanism 13, and the overturning driving mechanism 14 includes a first winch 141 provided on the walking cart 11 and an overturning traction rope 142 connected between the first winch 141 and the top of the leveling execution mechanism 13; wherein the first winch 141 drives the leveling execution mechanism 13 and the walking trolley 12 to overturn relative to the walking cart 11 in the vertical plane with the axle of the trolley track wheel 121 as the axis by winding and unwinding the overturning traction rope 142, so as to convert the leveling execution mechanism 13 between the working state and the non-working state. The overturning driving mechanism 14 cooperated with the first winch 141 and the overturning traction rope 142 has a simple structure, is convenient for the overturning control of the leveling execution mechanism 13, and does not need large overturning power. It should be noted that in the embodiment, as shown in Figure 2As shown, the first hoist 141 is arranged at the end of the travelling trolley 11 far from the second turning position. It should be noted that when the levelling mechanism 13 is turned, the levelling mechanism 13 needs to be turned downward from the side far from the first hoist 141, and therefore, before driving the levelling mechanism 13 to turn, it is necessary to ensure that the weight of the part of the levelling mechanism 13 below the travelling trolley 12 in the working state (i.e. the part of the levelling mechanism 13 far from the first hoist 141 in the non-working state) is greater than the weight of the part of the levelling mechanism 13 above the travelling trolley 12, so as to avoid turning the levelling mechanism 13 from the side close to the first hoist 141. Specifically, as shown in Figure 3 As shown, the levelling mechanism 13 comprises a chute 131, a levelling head 132 and a lifting assembly 133. The chute 131 is arranged in the travelling trolley 12 and can be lifted relative to the travelling trolley 12. The levelling head 132 is connected to the bottom of the chute 131. The lifting assembly 133 comprises a second hoist 1331 fixedly arranged in the travelling trolley 12 and a lifting rope 1332 connected between the chute 131 and the second hoist 1331. Since the levelling head 132 is arranged at the bottom of the chute 131, by winding and unwinding the lifting rope 1332 by the second hoist 1331, the travelling trolley 12 can be arranged at the middle of the chute 131, i.e. the weight of the part of the levelling mechanism 13 below the travelling trolley 12 in the working state is greater than the weight of the part of the levelling mechanism 13 above the travelling trolley 12.

[0087] Further, as shown in Figure 2 and Figure 9As shown, the overturning driving mechanism 14 further comprises a counterforce frame 143 connected to the walking carriage 11, the counterforce frame 143 moves along the walking carriage 11, and the overturning traction rope 142 passes through the counterforce frame 143 from below the counterforce frame 143; when the leveling execution mechanism 13 overturns at the first overturning position, the counterforce frame 143 is limited to be close to the first winch 141; when the leveling execution mechanism 13 overturns at the second overturning position, the counterforce frame 143 is limited to the first overturning position. By setting the counterforce frame 143 to apply a counterforce to the overturning traction rope 142, the required force for the first winch 141 to pull the leveling execution mechanism 13 to overturn can be reduced. It should be noted that by limiting the counterforce frame 143 to the first overturning position when the leveling execution mechanism 13 overturns at the second overturning position, a more suitable angle can be formed between the parts of the overturning traction rope 142 on both sides of the counterforce frame 143 to achieve a more labor-saving state. It should be further noted that when the leveling execution mechanism 13 and the walking carriage 12 are moved to the second overturning position, the counterforce frame 143 is connected to the top end of the leveling execution mechanism 13 by using a locking wire rope, so that the counterforce frame 143 can move to the first overturning position with the walking carriage 12 and the leveling execution mechanism 13, without the need to additionally set a driving structure to drive the movement of the counterforce frame 143.

[0088] Specifically, as shown in the drawings, Figure 10 In this embodiment, the counterforce frame 143 specifically comprises counterforce frame track wheels 1432 respectively rolling connected to the two first tracks 1111, and a frame body 1431 connected between the two counterforce frame track wheels 1432, and the overturning traction rope 142 passes through the frame body 1431; when the leveling execution mechanism 13 overturns at the first overturning position, the counterforce frame 143 is connected to the first winch 141 by a locking member; when the leveling execution mechanism 13 overturns at the second overturning position, the counterforce frame track wheels 1432 of the counterforce frame 143 are limited to the first overturning position by the limiting assembly 113. By using the above-mentioned counterforce frame 143, the limiting assembly 113 at the first overturning position can be used for limiting, without the need to additionally set other limiting structures.

[0089] In order to further improve the application range of the above-mentioned gravel bed leveling and immersed tube laying and installation integrated barge, as shown in the drawings, Figures 13-24 In this embodiment, the floating body 21 and the cross beam 22 are detachably connected, after the floating body 21 and the cross beam 22 are detached, the leveling device 1 and the two cross beams 22 are detachably connected to form a combined body, in the combined body, the leveling device 1 is located between the two cross beams 22, and in the leveling device 1, the leveling execution mechanism 13 overturns to a non-working state. By setting the floating body 21 and the cross beam 22 of the ship body 2 to be detachably connected, the floating body 21 and the combined body composed of the cross beam 22 and the leveling device 1 can be transported to the construction site for assembly respectively, which can further reduce the requirements for the water depth and width of the waterway, so as to meet the requirements of construction in the fourth-class waterway area of inland rivers.

[0090] It should be noted that, as Figure 18 As shown, in the assembly, both sides of the traveling trolley 11 are provided with first connecting members 5, and the sides of the two crossbeams 22 facing the traveling trolley 11 are each provided with second connecting members 6 opposite to the first connecting members 5. The opposing first connecting members 5 and second connecting members 6 are detachably connected. The assembly of the assembly is achieved through the detachable connection of the first connecting members 5 and second connecting members 6. Specifically, in this embodiment, the first connecting member 5 is a connecting seat, and the second connecting member 6 is a connecting plate. The connecting plate is inserted into the connecting seat and connected to the connecting seat by bolts. This detachable connection structure with connecting seat, connecting plate and bolts is simple in structure and facilitates the assembly and disassembly of the assembly.

[0091] To facilitate the assembly of the above-mentioned crushed stone bed leveling and immersed tube placement and installation integrated barge, such as Figures 13-15 , Figure 21 and Figure 22 As shown, the float 21 includes crossbeam connecting portions 211 located at both longitudinal ends, and a support portion 212 connecting the two crossbeam connecting portions 211; the two ends of the crossbeam 22 are provided with overlapping portions 221 for overlapping with the two crossbeam connecting portions 211 at the corresponding ends of the two floats 21, and the overlapping portions 221 are detachably connected to the crossbeam connecting portions 211; the support portion 212 is provided with a second rail 213 and a third rail 214 extending longitudinally, and a crossbeam moving support member 215 is slidably connected on the second rail 213; the crossbeams of the two floats 21 can move... The support member 215 is used to support the crossbeam 22 when the overlapping portion 221 of the crossbeam 22 is not overlapping with the crossbeam connection portion 211 of the float 21, and to move the supported crossbeam 22 longitudinally (i.e., the crossbeam moving support member 215 of the two floats 21 is used to support the overlapping portions 221 of the two ends of the other crossbeam 22 when the overlapping portions 221 of the two ends of one crossbeam 22 of the assembly are respectively overlapping with the two crossbeam connection portions 211 of the corresponding ends of the two floats 21, and to transport the supported crossbeam 22 after it is detached from the leveling device 1); such as Figure 18 As shown, the bottom of the traveling trolley 11 is equipped with trolley track wheels 112 that match the third track 214. The trolley track wheels 112 are connected to the bottom of the traveling trolley 11 via lifting components. The assembly process of the hull 2 ​​is as follows: Figure 17 and Figure 18 As shown, the leveling device 1, in its non-working state, is connected between two crossbeams 22 to form a combined assembly, thereby moving the assembly and two floats 21 above the area to be constructed. One crossbeam 22 is the first crossbeam 22a, and the other crossbeam 22 is the second crossbeam 22b. Figure 19 and Figure 20As shown, the two floating bodies 21 are controlled to sink and move to the two ends of the combination respectively, the two floating bodies 21 are controlled to float, the overlapping portions 221 at the two ends of the first cross beam 22a in the combination are overlapped on the cross beam connecting portions 211 at the longitudinal one end of the two floating bodies 21 respectively, the overlapping portions 221 at the two ends of the second cross beam 22b are supported on the cross beam moving supports 215 of the two floating bodies 21 respectively, the traveling trolley 11 of the leveling device 1 is erected between the two floating bodies 21, and the overlapping portions 221 and the cross beam connecting portions 211 are connected together; as shown in Figure 21 and Figure 22 As shown, the connection between the second cross beam 22b and the leveling device 1 is disconnected, and the second cross beam 22b is moved to the longitudinal end of the floating body 21 away from the first cross beam 22b through the cross beam moving support 215; as shown in Figure 23 and Figure 24 As shown, the overlapping portions 221 at the two ends of the second cross beam 22b are overlapped on the cross beam connecting portions 211 of the two floating bodies 21 respectively, the overlapping portions 221 and the cross beam connecting portions 211 are connected together, the connection between the leveling device 1 and the first cross beam 22a is disconnected, and the assembly of the integrated barge is completed. In this embodiment, the combination is supported between the longitudinal same end of the two floating bodies 21, and then one of the cross beams 22 is moved to the longitudinal other end of the floating body 21 through the movement of the cross beam moving support 215 along the second track 213 to complete the assembly, so that the assembly process is simple, the integrated barge can be quickly assembled, and the assembly efficiency is high and the cycle is short. It should be noted that the trolley track wheel 112 is lowered by the extension of the lifting member, so that the trolley track wheel 112 falls on the third track 214, so that the traveling trolley 11 is erected between the two floating bodies 21; after the traveling trolley 11 is disconnected from the first cross beam 22a and the second cross beam 22b, the traveling trolley 11 is lowered by the contraction of the lifting member, so that the lifting member is not always in the jacking state; when the integrated barge is disassembled after the construction is completed, the traveling trolley 11 is jacked by the extension of the lifting member, so that the height of the traveling trolley 11 is adjusted, so that the first connecting member 5 and the second connecting member 6 are aligned, so that the first connecting member 5 and the second connecting member 6 are connected by bolts, so that the traveling trolley 11 and the two cross beams 22 are reconnected as the combination. It should be further noted that, as shown in Figure 14 The second track 213 and the third track 214 extend from the cross beam connecting portion 211 at the longitudinal one end of the floating body 21 to the cross beam connecting portion 211 at the longitudinal other end. In addition, it should be noted that the overlapping portion 221 and the cross beam connecting portion 211 are detachably connected by a third connecting member (such as a bolt).

[0092] Further, as shown in Figure 15 and Figure 16As shown, the two ends of the crossbeam 22 are also provided with limiting members 222 for abutting against the sides of the floating body 21 to limit the relative position of the crossbeam 22 and the floating body 21. A recess is formed below the overlapping portion 221 for accommodating the crossbeam connecting portion 211 of the floating body 21, and the limiting member 222 is arranged on the cavity wall of the recess facing the crossbeam connecting portion 211. By arranging the recess below the overlapping portion 221 and cooperating with the crossbeam connecting portion 211 of the floating body 21, the quick positioning between the overlapping portion 221 and the crossbeam connecting portion 211 can be achieved. At the same time, by arranging the limiting member 222 to limit the position of the crossbeam connecting portion 211 in the recess, the collision between the crossbeam connecting portion 211 of the floating body 21 and the cavity wall can be avoided. In order to facilitate the installation of the limiting member 222, as shown in Figure 16 As shown, the upper part of the cavity wall of the recess facing the crossbeam connecting portion 211 is a vertical surface, and the lower part is an inclined surface inclined away from the crossbeam connecting portion 211, and the limiting member 222 is arranged on the inclined surface.

[0093] In order to facilitate the movement of the crossbeam 22, as shown in Figure 13 As shown, the integrated barge also includes a mooring device 4, which includes a plurality of mooring winches 41 arranged on the two crossbeams 22. Each crossbeam 22 is provided with a mooring winch 41 near the two ends, and the mooring winch 41 is connected with a mooring cable 42. As shown in Figure 21 When moving the crossbeam 22, the mooring winch 41 is arranged to move the mooring cable 42, so as to realize the movement of the crossbeam 22.

[0094] In order to control the moving direction of the crossbeam 22 along with the crossbeam moving support 215, as shown in Figure 21 and Figure 22 As shown, the combined immersed tube laying barge also includes an adjusting device 7 for adjusting the moving direction of the crossbeam 22 along with the crossbeam moving support 215. The adjusting device 7 is arranged between the corresponding ends of the two crossbeams 22. The adjusting device 7 is two, and the two adjusting devices 7 are respectively arranged near the two ends of the crossbeam 22. The adjusting device 7 includes two adjusting winches 71 respectively arranged on the same end of the two crossbeams 22, and an adjusting cable 72 connected between the two adjusting winches 71. Before moving the second crossbeam 22b, the adjusting cable 72 is connected between the adjusting winches 71 of the corresponding ends of the two crossbeams 22, so as to assemble the two adjusting devices 7 between the two ends of the crossbeam 22. When moving the second crossbeam 22b, the adjusting winch 71 on the first crossbeam 22a in the adjusting device 7 releases the adjusting cable 72, and the adjusting winch 71 on the second crossbeam 22b winds the adjusting cable 72. By adjusting the speed of releasing or winding the adjusting cable 72 by the adjusting winches 71 in the two adjusting devices 7, the moving direction of the second crossbeam 22b can be controlled.

[0095] In addition, it also needs to be explained that, as Figure 13As shown, the immersed tube lifting device 3 includes multiple immersion winches 31 and multiple installation winches 32 arranged on two crossbeams 22. The immersion winches 31 are connected to immersion cables for immersing the immersed tube, and the installation winches 32 are connected to installation cables for adjusting the position and angle of the immersed tube.

[0096] Based on the above-mentioned integrated barge for leveling the crushed stone foundation and immersing and installing the immersed tube, the present invention also provides a method for constructing an immersed tube tunnel, which uses the above-mentioned integrated barge for leveling the crushed stone foundation and immersing and installing the immersed tube for leveling the crushed stone foundation and immersing and installing the immersed tube.

[0097] The crushed stone bed leveling construction includes: the leveling actuator 13 is rotated relative to the traveling trolley 11 by the traveling trolley 12 to switch to the working state, and the working position of the leveling actuator 13 is adjusted by the longitudinal movement of the traveling trolley 11 relative to the floating body 21 and the movement of the traveling trolley 12 along the traveling trolley 11, so as to carry out the leveling operation on the crushed stone bed.

[0098] The immersed tube installation process includes: the leveling actuator 13 is rotated relative to the traveling trolley 11 via the traveling trolley 12 to switch to a non-working state; the immersed tube to be immersed is connected to the space between the two floating bodies 21 below the crossbeam 22 via the immersed tube hoisting device 3; the immersed tube is immersed via the immersed tube hoisting device 3 and the position and angle of the immersed tube are adjusted to complete the immersed tube installation.

[0099] The above-mentioned immersed tunnel construction method integrates the crushed stone foundation leveling and immersed tunnel installation into a single unit. By switching the leveling actuator 13 from working to non-working state, the immersed tunnel installation can be carried out directly after the crushed stone foundation leveling is completed. This method is characterized by high construction efficiency, short cycle, and low construction cost.

[0100] Furthermore, such as Figures 17-24 As shown, the above-mentioned immersed tunnel construction method also includes an integrated barge assembly step, which includes:

[0101] (1) Connect the leveling device 1, which is in a non-working state, between two crossbeams 22 to form a combination, and move the combination and two floats 21 above the area to be constructed; wherein, one crossbeam 22 is the first crossbeam 22a, and the other crossbeam 22 is the second crossbeam 22b.

[0102] In this step, it should be noted that the float 21 and the assembly can be floated to the area to be constructed by tugboat or transported to the area to be constructed by transport ship.

[0103] (2) Control the two floats 21 to sink and move the two floats 21 to the bottom of the two ends of the assembly respectively.

[0104] (3) controlling the two floating bodies 21 to float up, so that the two ends of the first cross beam 22a in the combination are respectively lapped on the cross beam connecting portions 211 at the longitudinal ends of the two floating bodies 21, the two ends of the second cross beam 22b are respectively supported on the cross beam moving support members 215 of the two floating bodies 21, the walking carriage 11 of the leveling device 1 is erected between the two floating bodies 21, and the lapped portions 221 are connected together with the cross beam connecting portions 211;

[0105] In this step, it is necessary to point out that before controlling the two floating bodies 21 to float up, there is a step of adjusting the position of the cross beam moving support member 215, so that the cross beam moving support member 215 is located directly below the lapped portion 221 of the second cross beam 22b. When controlling the two floating bodies 21 to float up, the floating body 21 is first floated up to the top of the cross beam connecting portion 211 at the longitudinal end of the floating body 21, and the bottom of the lapped portion 221 of the first cross beam 22a in the combination is contacted, and the top of the cross beam moving support member 215 of the floating body 21 is contacted with the bottom of the lapped portion 221 of the second cross beam 22b, the lapped portion 221 of the first cross beam 22a is preliminarily connected to the cross beam connecting portion 211 of the two floating bodies 21, and then the two floating bodies 21 are controlled to continue to float up, so that the combination is supported on the two floating bodies 21. When controlling the two floating bodies 21 to float up, the cross beam connecting portion 211 of the floating body 21 enters the cavity of the first cross beam 22a, and the position of the cross beam connecting portion 211 in the cavity is limited by the limiting member 222.

[0106] (4) disconnecting the connection between the second cross beam 22b and the leveling device 1, moving the second cross beam 22b to the longitudinal end of the floating body 21 away from the first cross beam 22a through the cross beam moving support member 215, and lapping the two ends of the lapped portion 221 of the second cross beam 22b on the cross beam connecting portion 211 at the end of the two floating bodies 21, connecting the lapped portions 221 together with the cross beam connecting portions 211, disconnecting the connection between the leveling device 1 and the first cross beam 22a, and completing the assembly of the integrated barge.

[0107] In this step, it is necessary to point out that the movement of the second cross beam 22b is realized by the mooring winch 41 provided on the second cross beam 22b and the mooring cable 42. It is also necessary to point out that before moving the second cross beam 22b, the adjusting cable 72 is connected between the adjusting winches 71 at the corresponding ends of the two cross beams 22, so as to assemble two adjusting devices 7 between the two ends of the cross beam 22; when moving the second cross beam 22b, the adjusting winch 71 on the first cross beam 22a in the adjusting device 7 releases the adjusting cable 72, and the adjusting winch 71 on the second cross beam 22b winds the adjusting cable 72, and the moving direction of the second cross beam 22b is controlled by adjusting the speed of the adjusting winch 71 releasing or winding the adjusting cable 72 in the two adjusting devices 7.

[0108] Through the description of the plurality of embodiments of the rock bed leveling and immersed tube sinking and installing integrated barge and the immersed tube tunnel construction method, it can be seen that the rock bed leveling and immersed tube sinking and installing integrated barge and the immersed tube tunnel construction method embodiments have at least one or more of the following advantages:

[0109] 1、The rock bed leveling and immersed tube sinking and installing integrated barge provided by the present application integrates the functions of rock bed leveling and immersed tube sinking and installing, can complete the two construction processes of rock bed leveling and immersed tube sinking and installing, greatly reduces the ship configuration of the immersed tube tunnel construction site, and effectively avoids the problems of cable arrangement and operation surface interference caused by the multiple ship configuration;

[0110] 2、In the rock bed leveling and immersed tube sinking and installing integrated barge provided by the present application, the walking trolley 11 of the leveling device 1 is provided with a first overturning position above the moon pool and a second overturning position outside the moon pool, and the leveling actuator 13 is overturned into a working state at the first overturning position and the second overturning position, respectively realizing the leveling construction of the bed under the moon pool surrounding range and the leveling construction of the small range bed outside the moon pool surrounding range, greatly improving the leveling efficiency and leveling range; and the leveling actuator 13 is overturned into a working state at the second overturning position, which can perform leveling construction on the construction area that the leveling ship cannot enter, and has a wide application range;

[0111] 3、The rock bed leveling and immersed tube sinking and installing integrated barge provided by the present application adopts an assembled structure, which reduces the requirements for the water depth, channel width and clearance height of the construction area channel, can perform construction in limited construction water area, can meet the requirements of construction in the inland river fourth-class channel area, and has a wide application range;

[0112] 4、The immersed tube tunnel construction method provided by the present application, the rock bed leveling construction and the immersed tube sinking and installing construction are both completed by the rock bed leveling and immersed tube sinking and installing integrated barge, and the leveling actuator 13 can be converted from a working state to a non-working state, so that the immersed tube sinking and installing construction can be directly performed after the rock bed leveling construction is completed, the construction efficiency is high, the construction period is short, and the construction cost is low.

[0113] Finally, it should be explained that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts of each embodiment can be mutually referred to.

[0114] The above examples are only used to illustrate the technical solutions of the present application but not to limit the present application; although the present application has been described in detail with reference to the preferred embodiments, it is understood by the person of ordinary skill in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application claimed.

Claims

1. An integrated barge for leveling the crushed stone bed and installing the immersed tube, characterized in that: include: The hull includes: Two floats are arranged side by side in the transverse direction, with the length direction of the floats as the longitudinal direction. Two crossbeams are provided, both of which are horizontally mounted between the two floats, and the two crossbeams are located at the longitudinal ends of the floats respectively; The space below the crossbeam and between the two floats is used to accommodate the submerged tube, and the hollow area enclosed by the two floats and the two crossbeams constitutes the moon pool. Leveling device, comprising: A traveling trolley is horizontally mounted between the two floating bodies and located above the moon pool. The traveling trolley moves longitudinally between the two crossbeams relative to the floating bodies. A traveling trolley is connected to the traveling trolley, and the traveling trolley moves along the traveling trolley and rotates relative to the traveling trolley in a vertical plane. A leveling actuator for leveling the base bed is mounted on the traveling trolley and can be raised and lowered relative to the traveling trolley. The leveling actuator is configured to switch between a working state and a non-working state by rotating the traveling trolley relative to the traveling main trolley in a vertical plane. In the working state, the leveling actuator is vertically positioned to perform leveling operations. In the non-working state, the leveling actuator is rotated to the position above the moon pool. A tube-laying device is installed on two crossbeams to connect the tube located in the space below the crossbeams and to control the sinking and installation of the tube. The traveling trolley has a first tilting position located directly above the moon pool. The leveling actuator tilts relative to the traveling trolley at the first tilting position. When the leveling actuator switches to the working state at the first tilting position, the leveling actuator passes through the moon pool to perform leveling operations on the base bed within the area surrounded by the moon pool. One end of the traveling trolley extends outside the moon pool, and the portion of the traveling trolley extending outside the moon pool is provided with a second flip position. The leveling actuator flips relative to the traveling trolley at the second flip position via the traveling trolley. When the leveling actuator switches to the working state at the second flip position, the leveling actuator is located outside the moon pool to perform leveling operations on the base bed outside the area enclosed by the moon pool.

2. The integrated barge for leveling the crushed stone bed and installing the immersed tube as described in claim 1, characterized in that, The traveling trolley includes two opposing track beams, each with a first track extending laterally on its opposite sides. Two trolley tracks are provided on each side of the traveling trolley and are trolley track wheels that are trolley track wheels trolley-connected to each of the first tracks. Each track beam is detachably connected to a limiting component at the first flip position and / or the second flip position to restrict one of the trolley track wheels to the first flip position or the second flip position. Each track beam also has a notch at the first flip position and / or the second flip position for another trolley track wheel to flip out of the first track. The notch is located above the first track and communicates with it. When the traveling trolley flips, the unrestricted trolley track wheel passes through the notch, with the axle of the trolley track wheel restricted by the limiting component as the axis.

3. The integrated barge for leveling the crushed stone bed and installing the immersed tube as described in claim 1, characterized in that, The float is detachably connected to the crossbeam; when the float is detached from the crossbeam, the leveling device is detachably connected to the two crossbeams to form an assembly. In the assembly, the leveling device is located between the two crossbeams, and the leveling actuator in the leveling device is flipped to a non-working state.

4. The integrated barge for leveling the crushed stone bed and installing the immersed tube as described in claim 3, characterized in that, The float includes crossbeam connecting portions located at both longitudinal ends, and a support portion connecting the two crossbeam connecting portions; both ends of the crossbeam are provided with overlapping portions for overlapping with the two crossbeam connecting portions at the corresponding ends of the two floats, and the overlapping portions are detachably connected to the crossbeam connecting portions; the support portion is provided with a second track and a third track extending longitudinally, and a crossbeam moving support member is slidably connected on the second track; the crossbeam moving support member of the two floats is used to support the crossbeam when the overlapping portion of the crossbeam is not overlapping with the crossbeam connecting portion of the float, and to move the supported crossbeam longitudinally; the bottom of the traveling trolley is provided with a trolley track wheel that matches the third track, and the trolley track wheel is connected to the bottom of the traveling trolley through a lifting member.

5. The integrated barge for leveling the crushed stone bed and installing the immersed tube as described in claim 1, characterized in that, The immersed tube lifting device includes multiple immersion winches and multiple installation winches arranged on the two crossbeams. The immersion winches are connected to immersion cables for immersing the immersed tube, and the installation winches are connected to installation cables for adjusting the position and angle of the immersed tube.

6. The integrated barge for leveling the crushed stone bed and installing the immersed tube as described in claim 1, characterized in that, The integrated barge also includes a mooring device, which includes multiple mooring winches arranged on the two crossbeams. Each crossbeam is equipped with a mooring winch near both ends, and the mooring winch is connected to a mooring cable.

7. A method for constructing immersed tunnels, characterized in that, The gravel bed leveling and immersed tube installation are carried out using the integrated barge for gravel bed leveling and immersed tube installation as described in any one of claims 1-6. The leveling construction of the crushed stone bed includes: the leveling actuator rotates the traveling trolley relative to the traveling trolley to switch to the working state, and adjusts the working position of the leveling actuator by moving the traveling trolley longitudinally relative to the floating body and moving the traveling trolley along the traveling trolley, so as to perform leveling operation on the crushed stone bed; The immersed tube installation process includes: the leveling actuator rotating relative to the traveling trolley to switch to the non-working state; the immersed tube to be immersed is connected to the space between the two floating bodies below the crossbeam by the immersed tube hoisting device; the immersed tube is immersed by the immersed tube hoisting device and the position and angle of the immersed tube are adjusted to complete the immersion installation of the immersed tube.

8. The immersed tunnel construction method according to claim 7, characterized in that, It also includes an integrated barge assembly step, which includes: The leveling device, which is not in operation, is connected between the two crossbeams to form an assembly. The assembly and the two floats are then moved above the area to be constructed. One of the crossbeams is the first crossbeam, and the other crossbeam is the second crossbeam. Control the two floats to sink, and move the two floats to below both ends of the assembly; Control the two floats to float, so that the overlapping parts at both ends of the first crossbeam in the assembly overlap with the crossbeam connection part at one longitudinal end of the two floats respectively, and the overlapping parts at both ends of the second crossbeam are supported on the crossbeam moving support of the two floats respectively, so that the traveling trolley of the leveling device is set between the two floats, connecting the overlapping parts and the crossbeam connection part; Disconnect the second crossbeam from the leveling device, move the second crossbeam to the longitudinal end of the float away from the first crossbeam using the crossbeam moving support, and make the overlapping portions at both ends of the second crossbeam overlap the crossbeam connecting portions at the two ends of the float respectively, connect the overlapping portions to the crossbeam connecting portions, disconnect the leveling device from the first crossbeam, and complete the assembly of the integrated barge.

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