Multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams and assembly method thereof

Abstract

The present invention relates to a multifunctional ship for inland river immersed tube tunnel construction with segmented crossbeams and an assembly method thereof, and belongs to the field of ship technology. The multifunctional ship comprises two working barges, two crossbeams, an auxiliary beam connection seat and an auxiliary beam; the working barges are respectively provided with hinged seats near the bow end and the stern end, and the hinged seats on the two working barges are arranged oppositely; the crossbeam comprises two pre-installed sections and a hoisting section that can be detachably connected to the two pre-installed sections, and the two pre-installed sections are respectively hinged to the hinged seats arranged oppositely on the two working barges; the auxiliary beam connection seats are arranged in pairs on the two working barges; the auxiliary beam is used to connect the two working barges to lock the two working barges before the hoisting section is connected to the two pre-installed sections, and the two ends of the auxiliary beam are detachably connected to the auxiliary beam connection seats arranged in pairs. The crossbeam of the multifunctional ship is connected to the working barge in an articulated manner, and the crossbeam is a segmented structure. It only needs to connect the hoisting section between the two pre-installed sections to achieve precise assembly in the rough sea environment.

Description

Technical Field

[0001] The invention belongs to the technical field of ships, and in particular relates to a multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams and an assembling method thereof. Background Art

[0002] The construction of inland river immersed tube tunnels is limited by the width and depth of the inland waterway, and has high requirements on the tonnage and size of the construction ships. In order to reduce the requirements for the water depth and width of the waterway, the construction of inland river immersed tube tunnels usually adopts the form of a catamaran combined ship. After two single ships enter the construction area, the two hulls are connected by a crossbeam to form a combined ship for the installation of the immersed tube.

[0003] At present, patent CN110053720A discloses a combined immersed tube transport and installation barge. After the two hulls are in place at the construction site, a crossbeam is connected between the two hulls by means of tethers to form a catamaran combined ship for inland river immersed tube tunnel construction. However, although the use of tethers to connect the crossbeam and the hull is convenient for assembly and disassembly, the tether connection is a flexible connection, and relative displacement between the crossbeam and the hull is prone to occur, resulting in deformation of the combined ship. Moreover, the connection strength of the tether connection is low and it is easy to be damaged, resulting in construction accidents. Patent CN219134453U discloses a variable width semi-submersible immersed tube floating installation barge, in which the crossbeam and two hulls are connected by bolts. Although relative displacement between the crossbeam and the hull can be avoided, since the two hulls may rise and fall inconsistently due to the influence of waves, the crossbeam and the hull are connected by bolts, so that the crossbeam and the hull are completely rigidly connected as one. The crossbeam will be subjected to great shear or torsion. In order to avoid damage to the crossbeam, one solution is to increase the width of the crossbeam to increase the cross-sectional area of ​​the crossbeam. Another solution is to use a highly rigid material to make the crossbeam, but both of these treatment methods will lead to an increase in the manufacturing cost of the combined ship, and will cause the weight of the beam to increase, making it difficult to transport and assemble.

[0004] Therefore, how to reduce the shear or torsion force on the beam while ensuring the beam connection strength of the multifunctional ship for inland immersed tube tunnel construction, while taking into account the feasibility and assembly efficiency of the beam assembly construction, is a technical problem that needs to be solved at present. Summary of the invention

[0005] The present invention provides a multifunctional vessel for inland river immersed tube tunnel construction with segmented crossbeams and an assembly method thereof. The crossbeams of the multifunctional vessel for inland river immersed tube tunnel construction are connected to a working barge in a hinged manner, which can reduce the shear force or torsional force on the crossbeam while ensuring the connection strength of the crossbeam. At the same time, the crossbeam adopts a detachably connected segmented structure, and precise assembly can be achieved in a rough sea environment by simply connecting the lifting section between two pre-assembled sections hinged on the working barge, which is convenient for assembly.

[0006] The present invention provides a multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams, comprising:

[0007] Two working barges, the two working barges are arranged in parallel, and articulated seats are respectively provided near the bow and stern ends of the working barges, and the articulated seats on the two working barges are arranged opposite to each other;

[0008] Two cross beams, the two cross beams are respectively connected between the opposite ends of the two working barges, the cross beams include two pre-installed sections and a hoisting section that is detachably connected to the two pre-installed sections, the two pre-installed sections are respectively provided with hinged plates to be hinged to the hinged seats that are oppositely arranged on the two working barges; when the pre-installed section and the hoisting section are detached from each other, the butt end of the pre-installed section extends out of the side of the working barge; when the pre-installed section and the hoisting section are detached from each other, the pre-installed section can rotate relative to the hinged seat so that its butt end is retracted into the side of the working barge;

[0009] Auxiliary beam connection seats, the auxiliary beam connection seats are arranged in pairs, and the paired auxiliary beam connection seats are respectively arranged on two working barges opposite to each other;

[0010] The auxiliary beam is used to connect the two working barges to lock the two working barges before the lifting section is docked with the two pre-installed sections. The two ends of the auxiliary beam in the length direction can be detachably connected to the auxiliary beam connecting seats arranged in pairs. The connection position of the auxiliary beam and the auxiliary beam connecting seat can be adjusted along the length direction of the auxiliary beam to adjust the relative positions of the two working barges.

[0011] In some of the embodiments, the auxiliary beam connecting seat is provided with a long hole extending along the length direction of the auxiliary beam, and the auxiliary beam and the auxiliary beam connecting seat are detachably connected by bolts passing through the long hole.

[0012] In some of the embodiments, the end surface of the butt joint end of the hoisting section is an inclined surface that is inclined from top to bottom and from outside to inside, and the end surface of the butt joint end of the pre-installed section is an inclined surface that matches the end surface of the butt joint end of the hoisting section.

[0013] In some embodiments, the lifting section includes a narrow section section whose cross-section is smaller than the end face of the butt end of the pre-installed section and a transition section integrally connected to both ends of the narrow section section, and the cross-section of the transition section gradually decreases from the end farthest from the narrow section section to the end close to the narrow section section.

[0014] In some of the embodiments, a screw-type tensioner is detachably connected between the hoisting section and the pre-installation section to pre-tension the hoisting section and the pre-installation section and adjust the butt end of the hoisting section to be flush with the butt end of the pre-installation section.

[0015] In addition, the present invention also provides an assembly method of a multifunctional ship for inland river immersed tube tunnel construction, which is applied to the assembly of a multifunctional ship for inland river immersed tube tunnel construction with segmented crossbeams as described in any of the above technical solutions, and comprises the following steps:

[0016] Pre-installing the pre-installed section of the crossbeam: pre-install the pre-installed section of the crossbeam in the hinged seat of the working barge, rotate the pre-installed section until its butt end is inserted into the side of the working barge and fixed;

[0017] Working barges in place: two working barges pre-installed with pre-assembled sections are driven to the assembly area and moored at the dock in the assembly area. When docked, the two working barges are parallel to each other, and the two pre-assembled sections belonging to the same beam are opposite to each other, and the auxiliary beam connection seats arranged in pairs on the two working barges are opposite to each other;

[0018] Adjustment of relative relationship of the working barges: Use the crane ship to lift the auxiliary beam and move it to span over the two working barges, and temporarily connect the two ends of the auxiliary beam in the length direction to the auxiliary beam connecting seats arranged in pairs, and adjust the connection position of the auxiliary beam and the auxiliary beam connecting seats to adjust the relative position of the two working barges, so that the relative position relationship of the two working barges is maintained within the set relative position relationship range required for the installation of the lifting section, and adjust the ballast water of the two working barges so that the two working barges are in a positive floating state and the difference in draft depth is less than the preset draft deviation;

[0019] Leveling of the pre-assembled section of the crossbeam: a jacking device for supporting the pre-assembled section is installed on the deck of the working barge. The jacking device is arranged one by one with the pre-assembled section and is arranged close to the side of the working barge close to another working barge. The fixation of the pre-assembled section is released, and the pre-assembled section is driven to rotate in the direction outside the side of the ship by contracting the jacking device until the pre-assembled section is horizontal.

[0020] Installation of the lifting section of the beam: After the two pre-installed sections belonging to the same beam are adjusted to the horizontal level respectively, use a crane ship to lift the lifting section and hoist it between the two pre-installed sections, keep the buoyancy of the two working barges consistent and the difference in draft depth is always less than the preset draft deviation, adjust the butt end of the lifting section to be flush with the butt end of the pre-installed section, position weld the butt end of the lifting section and the butt end of the pre-installed section, retract the jacking device and reduce the force of the crane ship on the lifting section to zero, and weld the butt end of the lifting section and the butt end of the pre-installed section.

[0021] In some of the embodiments, in the relative relationship adjustment step of the work barges, after the auxiliary beams are temporarily connected, it also includes connecting an adjusting cable between the diagonally opposite ends of the two work barges, the two adjusting cables cross each other, and the relative position relationship of the two work barges is adjusted by adjusting the length of the adjusting cable, the length of the mooring cable of the work barge, and the connection position of the auxiliary beam and the auxiliary beam connecting seat; wherein, the spacing between the two work barges and the length of the two diagonals are measured by a preset ruler and a laser theodolite, and the diagonal line refers to the line between the diagonally opposite ends of the two work barges; the spacing between the two work barges is controlled to be maintained at the preset spacing, and the length difference of the two diagonals is controlled to be less than the preset diagonal deviation, so that the relative position relationship of the two work barges is maintained within the set relative position relationship range.

[0022] In some of the embodiments, in the step of installing the crossbeam hoisting section, after the hoisting section is hoisted between the two pre-installed sections, it also includes installing screw-type tensioners between the top surfaces and the sides of the butt ends of the hoisting section and the pre-installed section respectively, using the screw-type tensioner to pre-tension the hoisting section and the pre-installed section, and adjusting the tensioning degree of the screw-type tensioner at different positions to make the butt ends of the hoisting section and the pre-installed section flush.

[0023] In some of the embodiments, in the step of installing the crossbeam hoisting section, the top surface of the butt end of the hoisting section and the top surface of the butt end of the pre-installed section are position-welded by means of a strap pre-installed on the top surface of the butt end of the hoisting section, the bottom surface of the butt end of the hoisting section and the bottom surface of the butt end of the pre-installed section are position-welded by means of a support plate pre-installed on the bottom surface of the butt end of the pre-installed section, and the side surface of the butt end of the hoisting section and the side surface of the butt end of the pre-installed section are position-welded by means of a positioning plate.

[0024] In some of the embodiments, in the step of installing the crossbeam hoisting section, the specific steps of retracting the jacking device and reducing the operating force of the crane ship on the hoisting section to zero are: controlling the jacking device to retract once according to the set retraction stroke, and at the same time adjusting the ballast water of the two working barges to overcome the heeling movement trend of the working barges caused by the retraction of the jacking device, and the crane ship unloading once according to the set unloading amount to reduce the force on the hoisting section; repeating the above-mentioned jacking device retraction, ballast water load adjustment and crane ship unloading process until the jacking device is separated from the pre-installed section, and the force of the crane ship on the hoisting section is reduced to zero while the hoisting section and the two working barges maintain a positive buoyant balance state.

[0025] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0026] 1. The multifunctional ship for inland river immersed tube tunnel construction with segmented crossbeams provided by the embodiment of the present invention comprises a pre-assembled section pre-hinged and installed on a working barge. When assembling at the construction site, it is only necessary to butt-connect the hoisting section of the crossbeam between the two pre-assembled sections, and there is no need to hinging the crossbeam at the construction site, which is convenient for assembly in an uneven sea environment. At the same time, the crossbeam is hinging with the working barge through the pre-assembled section, which can reduce the shear force or torsion force on the crossbeam under the premise of ensuring the connection strength of the crossbeam;

[0027] 2. The multifunctional vessel for inland river immersed tube tunnel construction with segmented crossbeams provided in the embodiment of the present invention can lock the two working barges before the installation of the hoisting section of the crossbeam by adjusting the auxiliary beam detachably connected between the two working barges and the connection position of the auxiliary beam and the auxiliary beam connecting seat, so as to facilitate the adjustment of the relative position relationship between the two working barges, thereby realizing efficient and accurate docking of the hoisting section and the pre-installed section in the rough sea environment;

[0028] 3. The multifunctional ship for inland river immersed tube tunnel construction with segmented crossbeams provided by the embodiment of the present invention can rotate the pre-installed sections of the crossbeams to be stored inside the side of the working barge, which is beneficial for the working barge to maintain a stable floating state and facilitate the working barge to enter the construction site;

[0029] 4. The assembly method of the multifunctional ship for inland river immersed tube tunnel construction provided by the embodiment of the present invention first installs the pre-installed section of the beam on the hinged seat of the working barge, then puts the two working barges pre-installed with the pre-installed section in place in the assembly area, and adjusts the relative position relationship and buoyancy of the two working barges to meet the installation requirements of the hoisting section of the beam, then levels the two pre-installed sections of the same beam, and hoists the hoisting section between the two pre-installed sections for welding, thereby realizing the hinged connection between the beam of the multifunctional ship for inland river immersed tube tunnel construction and the two working barges in the rough sea environment;

[0030] 5. The assembly method of the multifunctional ship for inland river immersed tube tunnel construction provided by the embodiment of the present invention, during the assembly process, by controlling the relative position relationship and floating state of the two working barges, and adjusting the horizontal state of the pre-installed section of the cross beam by the jacking device, and adjusting the butt end of the hoisting section to be flush with the butt end of the pre-installed section, it is possible to ensure the precise butt connection between the hoisting section of the cross beam and the pre-installed section;

[0031] 6. The assembly method of the multifunctional ship for inland river immersed tube tunnel construction provided by the embodiment of the present invention realizes the efficient and precise articulation of the crossbeam of the multifunctional ship for inland river immersed tube tunnel construction and two working barges in the rough sea environment, with low construction risk and low construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A schematic diagram of the structure of a multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the working barge in the state where the pre-assembly section is retracted into the side of the working barge;

[0035] Figure 3 It is a schematic diagram of the assembly structure of two working barges in a state of being connected by auxiliary beams before the hoisting section and the pre-assembled section are docked;

[0036] Figure 4 It is a schematic diagram of the assembly structure of the auxiliary beam and the auxiliary beam connection seat on a working barge;

[0037] Figure 5 for Figure 1 A partial enlarged view of the middle A;

[0038] Figure 6 It is a top view of the hoisting section;

[0039] Figure 7 It is a schematic diagram of the assembly structure of the screw-type tensioner, the hoisting section and the pre-installed section in a pre-tensioned state of the hoisting section and the pre-installed section;

[0040] Figure 8 A flow chart of an assembly method of a multifunctional ship for inland river immersed tube tunnel construction provided by an embodiment of the present invention;

[0041] Fig. 9 This is a schematic diagram of two working barges docked at the wharf during the working barge positioning step;

[0042] Fig.10 A schematic diagram of the connection structure of the working barge, the auxiliary beam, the adjusting cable and the mooring cable in the relative relationship adjustment step of the working barge;

[0043] Fig.11 A schematic diagram of the construction process of the leveling steps of the pre-assembled section of the beam;

[0044] Fig.12 It is a schematic diagram of the crane vessel lifting the lifting section in the installation steps of the beam lifting section;

[0045] Fig.13 It is a schematic diagram of the hoisting section being hoisted between two pre-installed sections in the installation step of the crossbeam hoisting section;

[0046] Fig.14It is a schematic diagram of the pre-tensioning of the hoisting section and the pre-installed section in the installation step of the crossbeam hoisting section;

[0047] Fig.15 It is a schematic diagram of the positioning welding of the hoisting section and the pre-installed section in the installation step of the crossbeam hoisting section;

[0048] Fig.16 It is a schematic diagram of the process of installing the crossbeam hoisting section after the jacking device is recovered and the hoisting section is separated from the crane ship;

[0049] Fig.17 This is a schematic diagram of the welding of the hoisting section and the pre-installed section in the installation steps of the crossbeam hoisting section.

[0050] In the figure:

[0051] 1. Multifunctional ship for inland river immersed tube tunnel construction; 2. Wharf; 3. Mooring rope; 4. Adjusting rope; 5. Hand chain hoist; 6. Lifting device; 7. Crane ship;

[0052] 11. Working barge; 111. Articulated seat; 112. Locking piece; 113. Steel pier; 12. Crossbeam; 121. Pre-installed section; 1211. Articulated plate; 122. Hoisting section; 1221. Transition section; 1222. Narrow section section; 13. Auxiliary beam; 14. Auxiliary beam connecting seat; 141. Long hole; 15. Bolt; 16. Strap; 17. Support plate; 18. Positioning horse plate; 19. Screw-type tensioner; 191. Fixing piece; 192. Screw. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or location relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] As attached Figure 1-Figure 7 As shown, in an illustrative embodiment of a multifunctional vessel 1 for inland river immersed tube tunnel construction with segmented crossbeams of the present invention, the multifunctional vessel 1 for inland river immersed tube tunnel construction with segmented crossbeams comprises two working barges 11, two crossbeams 12, an auxiliary beam connecting seat 14 and an auxiliary beam 13; the two working barges 11 are arranged in parallel, and the working barges 11 are respectively provided with articulated seats 111 near the bow end and the stern end, and the articulated seats 111 on the two working barges 11 are arranged oppositely; the two crossbeams 12 are respectively connected between the opposite ends of the two working barges 11, and the crossbeam 12 comprises two pre-assembled sections 121 and a hoisting section 122 detachably connected to and docked between the two pre-assembled sections 121, and the two pre-assembled sections 121 are respectively provided with articulated plates 1211 to be articulated to the articulated seats 111 arranged oppositely on the two working barges 11; between the pre-assembled sections 121 and the hoisting sections 122, the two pre-assembled sections 121 are respectively provided with articulated plates 1211 to be articulated to the articulated seats 111 arranged oppositely on the two working barges 11; When the loading sections 122 are detached from each other, the butt joint end of the pre-installed section 121 extends out of the side of the working barge 11; when the pre-installed section 121 and the hoisting section 122 are detached from each other, the pre-installed section 121 can be rotated relative to the hinged seat 111 so that its butt joint end is retracted into the side of the working barge 11; the auxiliary beam connecting seats 14 are arranged in pairs, and the paired auxiliary beam connecting seats 14 are respectively arranged on the two working barges 11 opposite to each other; the auxiliary beam 13 is used to connect the two working barges 11 before the hoisting section 122 is docked with the two pre-installed sections 121 to lock the two working barges 11, and the two ends of the auxiliary beam 13 in the length direction can be detachably connected to the paired auxiliary beam connecting seats 14, and the connection position of the auxiliary beam 13 and the auxiliary beam connecting seat 14 can be adjusted along the length direction of the auxiliary beam 13 to adjust the relative position of the two working barges 11.

[0057] It should be noted that the hinged connection is a flexible connection method between the flexible connection and the completely rigid connection. When it is used to connect the beam and the two work barges, it can reduce the shear force or torsion force on the beam while the hull is deformed. However, the length of the beam is much larger than the width of the single ship, and the weight of the beam is heavy. In addition, the fitting clearance of the hinged connection is extremely small. Therefore, it is extremely technically difficult to realize the hinged connection between the beam and the two work barges in the rough sea environment.

[0058] The above-mentioned multifunctional vessel 1 for inland river immersed tube tunnel construction with segmented crossbeams, its crossbeam 12 includes a pre-assembled section 121 pre-hinged and installed on the working barge 11. When assembling at the construction site, it is only necessary to dock the lifting section 122 of the crossbeam 12 between the two pre-assembled sections 121, and there is no need to hinge the crossbeam 12 at the construction site, which is convenient for assembly in the rough environment of the sea. At the same time, the crossbeam 12 is hinged with the working barge 11 through the pre-assembled section 121, which can reduce the shear force or torsion force on the crossbeam 12 while ensuring the connection strength of the crossbeam 12. Moreover, the above-mentioned multifunctional ship 1 for inland river immersed tube tunnel construction with segmented crossbeams can lock the two working barges 11 before the installation of the hoisting section 122 of the crossbeam 12 through the auxiliary beam 13 that is detachably connected between the two working barges 11 and the adjustment of the connection position between the auxiliary beam 13 and the auxiliary beam connecting seat 14, so as to facilitate the adjustment of the relative position relationship between the two working barges 11, thereby achieving efficient and accurate docking of the hoisting section 122 with the pre-installed section 121 in the rough sea environment. In addition, the above-mentioned multifunctional ship 1 for inland river immersed tube tunnel construction with segmented crossbeams, the pre-installed section 121 of the crossbeam 12 can be rotated and stored inside the side of the working barge 11, which is conducive to the working barge 11 to maintain a stable floating state and facilitate the working barge 11 to enter the construction site and take position.

[0059] In order to keep the two working barges 11 parallel when adjusting the relative positions of the two working barges 11, as shown in FIG. Figure 3 As shown, the auxiliary beams 13 are preferably arranged in two numbers, and the two auxiliary beams 13 are respectively arranged near the hinged seats 111 at the bow and stern ends of the work barge 11, so as to control the distance between the bow ends and the distance between the stern ends of the two work barges 11 respectively through the two auxiliary beams 13, thereby controlling the two work barges 11 to maintain a parallel state.

[0060] In order to facilitate the adjustment of the connection position between the auxiliary beam 13 and the auxiliary beam connecting seat 14, as shown in FIG. Figure 4 As shown, in one embodiment, the auxiliary beam connection seat 14 is provided with a long hole 141 extending along the length direction of the auxiliary beam 13, and the auxiliary beam 13 and the auxiliary beam connection seat 14 are detachably connected by a bolt 15 penetrating through the long hole 141. When adjusting, the bolt 15 is loosened to control the working barges 11 to move closer or farther from each other to adjust the relative positions of the two working barges 11. When the working barges 11 move, the bolt 15 moves along the long hole 141. When the adjustment is in place, the bolt 15 is tightened to make the auxiliary beam 13 and the auxiliary beam connection seat 14 tightly connected at the new position.

[0061] Regarding the hoisting section 122 and the pre-installed section 121 of the crossbeam 12, it should be noted that Figure 5As shown, the butt-end face of the hoisting section 122 is an inclined surface that is inclined from top to bottom and from outside to inside, and the butt-end face of the pre-installed section 121 is an inclined surface that matches the butt-end face of the hoisting section 122. The butt-end faces of the hoisting section 122 and the pre-installed section 121 are arranged in this way so that the distance between the tops of the butt ends of the two pre-installed sections 121 is greater than the bottom length of the hoisting section 122, so that the hoisting section 122 can be placed between the two pre-installed sections 121 from top to bottom, and the butt ends of the two pre-installed sections 121 can be used to support the hoisting section 122, so that the hoisting section 122 of the crossbeam 12 can be hoisted between the two pre-installed sections 121. Moreover, when the distance between the two working barges 11 is maintained at the distance required for installing the hoisting section 122, during the process of hoisting the hoisting section 122 from top to bottom, the two docking ends of the hoisting section 122 are not easy to collide with the docking ends of the pre-installed section 121. Therefore, when hoisting the hoisting section 122, there is no need to reserve a large safety distance between the hoisting section 122 and the pre-installed section 121 in the length direction of the beam 12, which facilitates the subsequent precise docking of the hoisting section 122 with the pre-installed section 121.

[0062] Further, such as Figure 6 As shown, the hoisting section 122 includes a narrow section section 1222 having a cross section smaller than the end surface of the butt end of the pre-installed section 121 and a transition section 1221 integrally connected to both ends of the narrow section section 1222, and the cross section of the transition section 1221 gradually decreases from the end away from the narrow section section 1222 to the end close to the narrow section section 1222. Designing the hoisting section 122 as a variable cross section can reduce the deadweight of the hoisting section 122 while ensuring the mechanical strength of the cross beam 12, which is beneficial to the hoisting of the hoisting section 122.

[0063] In addition, in order to facilitate the accurate docking of the hoisting section 122 and the pre-installed section 121, as shown in FIG. Figure 7As shown, a screw tensioner 19 is detachably connected between the hoisting section 122 and the pre-installed section 121 to pre-tension the hoisting section 122 and the pre-installed section 121 and adjust the butt end of the hoisting section 122 to be flush with the butt end of the pre-installed section 121. It should be noted that the screw tensioner 19 is a prior art in the art, and the specific structure of the screw tensioner 19 used in this embodiment is as follows: the screw tensioner 19 includes two fixing members 191 to be respectively installed on the hoisting section 122 and the pre-installed section 121, and also includes a screw 192, and the two ends of the screw 192 are respectively provided with a forward thread and a reverse thread, and the two ends of the screw 192 are respectively threadedly connected with the two fixing members 191. During adjustment, by rotating the screw rod 192 in the forward or reverse direction, the two fixing members 191 can be driven to move the hoisting section 122 and the pre-installed section 121. At the same time, since the fixing members 191 are installed at relatively positions on the hoisting section 122 and the pre-installed section 121, the butt end of the hoisting section 122 can be aligned with the butt end of the pre-installed section 121 by rotating the screw rod 192 to drive the hoisting section 122 and the pre-installed section 121 closer. It should also be noted that the screw-type tensioner 19 is respectively installed between the top surface of the hoisting section 122 and the pre-installed section 121 and between the sides to adjust the hoisting section 122 to be flush with the top surface and the side surface of the pre-installed section 121.

[0064] like Figure 8-Figure 17 As shown, based on the above-mentioned multifunctional ship 1 for inland river immersed tube tunnel construction with segmented beams, an embodiment of the present invention further provides an assembly method for a multifunctional ship for inland river immersed tube tunnel construction, which is applied to the assembly of the above-mentioned multifunctional ship 1 for inland river immersed tube tunnel construction with segmented beams, and comprises the following steps:

[0065] S1 Pre-install the pre-installed section of the cross beam: pre-install the pre-installed section 121 of the cross beam 12 in the hinged seat 111 of the working barge 11, rotate the pre-installed section 121 until its butt end is received into the side of the working barge 11 and fixed;

[0066] S2 The working barges are in place: two working barges 11 pre-installed with pre-installed sections 121 are respectively driven to the assembly area and moored at the pier 2 in the assembly area. When docked, the two working barges 11 are parallel to each other, and the two pre-installed sections 121 belonging to the same beam 12 are respectively opposite to each other, and the auxiliary beam connecting seats 14 arranged in pairs on the two working barges 11 are opposite to each other;

[0067] S3 Adjustment of the relative relationship of the working barges: Use the crane ship 7 to lift the auxiliary beam 13 and move it to span over the two working barges 11, and temporarily connect the two ends of the auxiliary beam 13 in the length direction to the auxiliary beam connecting seats 14 arranged in pairs, and adjust the connection position of the auxiliary beam 13 and the auxiliary beam connecting seats 14 to adjust the relative position of the two working barges 11, so that the relative position relationship of the two working barges 11 is maintained within the set relative position relationship range required for installing the lifting section 122, and adjust the ballast water of the two working barges 11 so that the two working barges 11 are in a positive floating state and the difference in draft depth is less than the preset draft deviation;

[0068] S4 Leveling of the pre-assembled section of the cross beam: Install a jacking device 6 for supporting the pre-assembled section 121 on the deck of the working barge 11, the jacking device 6 is arranged one by one with the pre-assembled section 121 and is arranged close to the side of the working barge 11 close to another working barge 11; release the fixation of the pre-assembled section 121, and drive the pre-assembled section 121 to rotate in a direction outside the side of the ship by contracting the jacking device 6 until the pre-assembled section 121 is horizontal;

[0069] S5 installation of the crossbeam hoisting section: after the two pre-installed sections 121 belonging to the same crossbeam 12 are adjusted to be horizontal respectively, use the crane ship 7 to lift the hoisting section 122 and hoist it between the two pre-installed sections 121, keep the buoyancy of the two working barges 11 consistent and the difference in draft depth is always less than the preset draft deviation, adjust the butt end of the hoisting section 122 to be flush with the butt end of the pre-installed section 121, position weld the butt end of the hoisting section 122 and the butt end of the pre-installed section 121, retract the lifting device 6 and reduce the force of the crane ship 7 on the hoisting section 122 to zero, and weld the butt end of the hoisting section 122 and the butt end of the pre-installed section 121.

[0070] The assembly method of the above-mentioned multifunctional ship for inland river immersed tube tunnel construction is to first install the pre-installed section 121 of the beam 12 on the hinged seat 111 of the work barge 11, then put the two work barges 11 pre-installed with the pre-installed section 121 in place in the assembly area, and adjust the relative position relationship and buoyancy of the two work barges 11 to meet the installation requirements of the hoisting section 122 of the beam 12, then level the two pre-installed sections 121 of the same beam 12, and hoist the hoisting section 122 between the two pre-installed sections 121 for welding, thereby realizing the hinged connection between the beam 12 of the multifunctional ship 1 for inland river immersed tube tunnel construction and the two work barges 11 in the rough sea environment. Moreover, in the assembly method of the multifunctional ship 1 for inland river immersed tube tunnel construction, during the assembly process, by controlling the relative position relationship and floating state of the two working barges 11, and adjusting the horizontal state of the pre-installed section 121 of the cross beam 12 through the jacking device 6, and adjusting the docking end of the hoisting section 122 to be flush with the docking end of the pre-installed section 121, it is possible to ensure the precise docking of the hoisting section 122 of the cross beam 12 with the pre-installed section 121. In addition, the assembly method of the multifunctional ship 1 for inland river immersed tube tunnel construction realizes the efficient and precise articulation of the cross beam 12 of the multifunctional ship 1 for inland river immersed tube tunnel construction and the two working barges 11 in the rough sea environment, and the construction risk is small and the construction cost is low.

[0071] Regarding the S1 pre-installed beam pre-installed section steps, it should be noted that Figure 2 As shown, after the butt end of the pre-installed section 121 is rotated and retracted into the side of the working barge 11, a locking piece 112 is installed between the pre-installed section 121 and the working barge 11 to fix the pre-installed section 121. Specifically, the locking piece 112 can be a steel support. It should also be noted that the rotation angle of the pre-installed section 121 is less than 90°, so that the pre-installed section 121 can be leveled later.

[0072] Regarding the S2 operation barge placement steps, it should be noted that Fig. 9 As shown, when the two working barges 11 are moored at the pier 2, they can be moored in a direction perpendicular to the pier 2, with one end of the working barge 11 in the length direction moored at the pier 2 and the other end anchored. It is understandable that when the two working barges 11 are moored at the pier 2, they can also be moored along the extension direction of the pier 2, wherein one working barge 11 is moored at the pier 2 and the other working barge 11 is anchored.

[0073] Regarding the relative relationship adjustment steps of the S3 work barge, it should be noted that a single auxiliary beam 13 can be formed by connecting multiple sections of auxiliary sub-beams in sequence, each section of the auxiliary sub-beam has a flange interface reserved, and the flange interfaces of two adjacent sections of the auxiliary sub-beams are detachably connected by bolts. After the auxiliary sub-beams are transported to the assembly area with the work barge 11, the auxiliary beams 13 are assembled on the deck of the work barge 11. When the auxiliary beam 13 is connected to the auxiliary beam connection seat 14, the auxiliary beam 13 can be temporarily connected to the auxiliary beam connection seat 14 by tightening the bolts 15 passing through the long holes 141 of the auxiliary beam connection seat 14.

[0074] In order to facilitate the regulation of the relative position relationship between the two working barges 11, Fig.10 As shown, after the auxiliary beam 13 is temporarily connected, it also includes connecting an adjusting cable 4 between the ends of the two working barges 11 that are diagonally opposite to each other, and the two adjusting cables 4 are crossed with each other. By adjusting the length of the adjusting cable 4, the length of the mooring cable 3 of the working barge 11, and the connection position of the auxiliary beam 13 and the auxiliary beam connecting seat 14, the relative position relationship of the two working barges 11 can be adjusted; wherein, the spacing between the two working barges 11 and the length of the two diagonals are measured by a preset ruler and a laser theodolite, and the diagonal line refers to the connecting line between the ends of the two working barges 11 that are diagonally opposite to each other; the spacing between the two working barges 11 is controlled to be maintained at the preset spacing, and the length difference of the two diagonals is controlled to be less than the preset diagonal deviation, so that the relative position relationship of the two working barges 11 is maintained within the set relative position relationship range. It should be noted that by loosening the bolts 15 connected between the auxiliary beam 13 and the auxiliary beam connection seat 14 to release the fixation of the auxiliary beam 13 and the auxiliary beam connection seat 14, the anchor machine connected to the mooring cable 3 is used to adjust the length of the mooring cable 3, and the hand winch 5 installed at one end of the adjustment cable 4 is used to adjust the length of the adjustment cable 4 to pull the two working barges 11 to move. When the working barge 11 moves, the bolts 15 move along the long holes 141. When the relative positions of the two working barges 11 are adjusted to the right position, the bolts 15 connected between the auxiliary beam 13 and the auxiliary beam connection seat 14 are tightened to fix the auxiliary beam 13 and the auxiliary beam connection seat 14, so that the relative position relationship of the two working barges 11 can be locked, which is conducive to ensuring the precise installation of the subsequent hoisting section 122. It should also be noted that the preset spacing is determined according to the length of the hoisting section 122 and the length of the pre-installed section 121 extending out of the working barge 11. In this embodiment, the preset spacing is set to 43.5~45m; the preset diagonal deviation is preferably 0.5m.

[0075] Regarding the relative relationship adjustment step of S3 working barges, it should be noted that when adjusting the draft of the two working barges 11, the draft of the working barges 11 is adjusted by using the ballast water system of the two working barges 11, and the draft of the two working barges 11 is preferably adjusted to about 2 meters. The preset draft deviation is preferably 100mm, so that the two working barges 11 can maintain the same floating state as much as possible.

[0076] Regarding the leveling step of the pre-installed section of the cross beam S4, it should be noted that the lifting device 6 can be a hydraulic jack, which drives the pre-installed section 121 to rotate and level through the contraction of the hydraulic jack. Fig.11 As shown, a steel pier 113 is also installed on the deck of the work barge 11 to support the pre-installed section 121. When the pre-installed section 121 is horizontal, the part of the pre-installed section 121 close to the butt end is supported on the steel pier 113. It should also be noted that after the pre-installed section 121 is leveled, a temporary scaffolding and safety net are set up in the area where the butt end of the pre-installed section 121 is located, so as to facilitate the subsequent welding construction of the hoisting section 122 and the pre-installed section 121.

[0077] Regarding the installation steps of the S5 beam hoisting section, it should be noted that Fig.12 As shown, when the crane vessel 7 lifts the hoisting section 122 of the cross beam 12, the hoisting section 122 needs to be suspended for 5 minutes after leaving the ground to stabilize the hoisting section 122. Then, the crane vessel 7 slowly moves to the side of the working barge 11 to be connected with the hoisting section 122, so as to lift the hoisting section 122 between the two pre-installed sections 121. Fig.14 As shown, after the hoisting section 122 is hoisted between the two pre-installed sections 121, screw tensioners 19 are respectively installed between the top surface and the side surface of the butt ends of the hoisting section 122 and the pre-installed section 121, and the hoisting section 122 and the pre-installed section 121 are pre-tensioned by the screw tensioners 19, and the butt ends of the hoisting section 122 and the pre-installed section 121 are adjusted to be flush by adjusting the tensioning degree of the screw tensioners 19 at different positions. The butt end of the hoisting section 122 and the butt end of the pre-installed section 121 can be controlled to be within 2 mm by the screw tensioners 19.

[0078] In the step S5 of installing the crossbeam hoisting section, the butt joint end of the hoisting section 122 and the butt joint end of the pre-installed section 121 are positioned and welded, which can temporarily fix the butt joint end of the hoisting section 122 and the butt joint end of the pre-installed section 121, so as to facilitate the pre-welding inspection and verification, and help ensure the subsequent accurate welding of the hoisting section 122 and the pre-installed section 121. Specifically, in this embodiment, Fig.15As shown, the top surface of the butt end of the hoisting section 122 and the top surface of the butt end of the pre-installed section 121 are position-welded through a strap 16 pre-installed on the top surface of the butt end of the hoisting section 122, the bottom surface of the butt end of the hoisting section 122 and the bottom surface of the butt end of the pre-installed section 121 are position-welded through a support plate 17 pre-installed on the bottom surface of the butt end of the pre-installed section 121, and the side surface of the butt end of the hoisting section 122 and the side surface of the butt end of the pre-installed section 121 are position-welded through a positioning plate 18. During the position welding, the gap between the welding interface of the hoisting section 122 and the pre-installed section 121 is controlled to be 3-10 mm.

[0079] In the S5 crossbeam hoisting section installation step, after positioning welding, the jacking device 6 is recovered and the force exerted by the crane ship 7 on the hoisting section 122 is reduced to zero, so that the hoisting section 122 can be separated from the jacking device 6 and the crane ship 7, which is convenient for subsequent welding. Specifically, the specific steps of recovering the jacking device 6 and reducing the working force of the crane ship 7 on the hoisting section 122 to zero are: control the jacking device 6 to retract once according to the set retraction stroke, and at the same time adjust the ballast water of the two working barges 11 to overcome the heeling movement trend of the working barge 11 caused by the retraction of the jacking device 6, and the crane ship 7 is unloaded once according to the set unloading amount to reduce the force exerted on the hoisting section 122; repeat the above-mentioned jacking device 6 retraction, ballast water load adjustment and crane ship 7 unloading process until the jacking device 6 is separated from the pre-installed section 121, and the force exerted by the crane ship 7 on the hoisting section 122 is reduced to zero when the hoisting section 122 and the two working barges 11 maintain a positive floating balance state. Through the coordinated operation of the retraction of the jacking device 6, the ballast water load adjustment and the unloading of the crane ship 7, the jacking device 6 can be recovered and the unloading of the crane ship 7 can be achieved under the premise of maintaining the stable floating state of the working barge 11. It should be noted that in this embodiment, the set retraction stroke of the jacking device 6 for each retraction is preferably 20mm, and the set unloading amount of the crane ship 7 for each unloading is preferably 3 tons to 5 tons.

[0080] In the installation step of the S5 crossbeam hoisting section, a circumferential butt weld is formed between the hoisting section 122 and the pre-installed section 121. The weld is divided into four working surfaces. During welding, one welding machine is arranged on each working surface to weld from the middle to both ends simultaneously.

[0081] In addition, it should be noted that after the butt-jointed installation of the hoisting section 122 of one crossbeam 12 is completed, the butt-jointed installation of the hoisting section 122 of another crossbeam 12 is performed.

[0082] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0083] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams, characterized in that: include: Two working barges, the two working barges are arranged in parallel, and the working barges are respectively provided with articulated seats near the bow end and the stern end, and the articulated seats on the two working barges are arranged opposite to each other; Two crossbeams, the two crossbeams are respectively connected between the opposite ends of the two working barges, the crossbeams include two pre-installed sections and a hoisting section detachably connected to the two pre-installed sections, the two pre-installed sections are respectively provided with hinged plates to be hinged to the hinged seats arranged oppositely on the two working barges; when the pre-installed section and the hoisting section are detached from each other, the butt end of the pre-installed section extends out of the side of the working barge; when the pre-installed section and the hoisting section are detached from each other, the pre-installed section can rotate relative to the hinged seat so that Its butt end is retracted into the side of the working barge; a screw-type tensioner is detachably connected between the hoisting section and the pre-installed section to pre-tension the hoisting section and the pre-installed section and adjust the butt end of the hoisting section to be flush with the butt end of the pre-installed section; the screw-type tensioner includes two fixings, which are respectively installed on the hoisting section and the pre-installed section; the screw-type tensioner also includes a screw, which is respectively provided with a forward thread and a reverse thread at both ends, and the two ends of the screw are respectively threadedly connected with the two fixings; Auxiliary beam connection seats, the auxiliary beam connection seats are arranged in pairs, and the auxiliary beam connection seats arranged in pairs are respectively arranged on the two working barges opposite to each other; The auxiliary beam is used to connect the two working barges to lock the two working barges before the hoisting section is docked with the two pre-installed sections. The two ends of the auxiliary beam in the length direction can be detachably connected to the auxiliary beam connecting seats arranged in pairs. The connection position of the auxiliary beam and the auxiliary beam connecting seat is adjustable along the length direction of the auxiliary beam to adjust the relative positions of the two working barges.

2. The multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams according to claim 1 is characterized in that: The auxiliary beam connection seat is provided with a long hole extending along the length direction of the auxiliary beam, and the auxiliary beam and the auxiliary beam connection seat are detachably connected by bolts passing through the long hole.

3. The multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams according to claim 1, characterized in that: The butt-joint end face of the hoisting section is a sloped surface that is inclined from top to bottom and from outside to inside, and the butt-joint end face of the pre-installed section is a sloped surface that matches the butt-joint end face of the hoisting section.

4. The multifunctional ship for inland river immersed tube tunnel construction with segmented cross beams according to claim 1, characterized in that: The lifting section includes a narrow section section whose cross-section is smaller than the end face of the butt end of the pre-installed section and a transition section integrally connected to both ends of the narrow section section, and the cross-section of the transition section gradually decreases from one end away from the narrow section section to one end close to the narrow section section.

5. A method for assembling a multifunctional ship for inland river immersed tube tunnel construction, characterized in that: The assembly of a multifunctional ship for inland river immersed tube tunnel construction with segmented crossbeams as claimed in any one of claims 1 to 4 comprises the following steps: Pre-installing the pre-installed section of the cross beam: pre-installing the pre-installed section of the cross beam in the articulated seat of the working barge, rotating the pre-installed section until its butt end is received into the side of the working barge and fixed; The working barge is in place: the two working barges pre-installed with the pre-installed sections are driven to the assembly area respectively and moored at the dock in the assembly area. When docked, the two working barges are parallel to each other, the two pre-installed sections belonging to the same beam are opposite to each other, and the auxiliary beam connecting seats arranged in pairs on the two working barges are opposite to each other; Adjustment of the relative relationship of the working barges: using a crane ship to lift the auxiliary beam and move it to span over the two working barges, temporarily connecting the two ends of the auxiliary beam in the length direction to the auxiliary beam connecting seats arranged in pairs, adjusting the connection position of the auxiliary beam and the auxiliary beam connecting seats to adjust the relative position of the two working barges, so that the relative position relationship of the two working barges is maintained within the set relative position relationship range required for installing the lifting section, and adjusting the ballast water of the two working barges so that the two working barges are in a positive floating state and the difference in draft depth is less than the preset draft deviation; Leveling of the pre-assembled section of the crossbeam: installing a jacking device for supporting the pre-assembled section on the deck of the working barge, the jacking device being arranged one-to-one with the pre-assembled section and being arranged close to the side of the working barge close to the other working barge; releasing the fixation of the pre-assembled section, and driving the pre-assembled section to rotate in a direction other than the side of the ship by contracting the jacking device until the pre-assembled section is horizontal; Installation of the crossbeam hoisting section: after the two pre-installed sections belonging to the same crossbeam are adjusted to be horizontal respectively, the hoisting section is lifted by a crane ship and lowered between the two pre-installed sections, the buoyancy of the two working barges is kept consistent and the difference in draft depth is always less than the preset draft deviation, the butt end of the hoisting section is adjusted to be flush with the butt end of the pre-installed section, the butt end of the hoisting section and the butt end of the pre-installed section are position-welded, the jacking device is recovered and the force of the crane ship on the hoisting section is reduced to zero, and the butt end of the hoisting section and the butt end of the pre-installed section are welded.

6. The method for assembling a multifunctional ship for inland river immersed tube tunnel construction according to claim 5, characterized in that: In the relative relationship adjustment step of the working barges, after the auxiliary beam is temporarily connected, it also includes connecting an adjusting cable between the ends of the two working barges that are diagonally opposite to each other, and the two adjusting cables are crossed with each other, and the relative position relationship of the two working barges is adjusted by adjusting the length of the adjusting cable, the length of the mooring cable of the working barge, and the connection position of the auxiliary beam and the auxiliary beam connecting seat; wherein, the spacing between the two working barges and the length of the two diagonals are measured by a preset ruler and a laser theodolite, and the diagonal line refers to the connecting line between the ends of the two working barges that are diagonally opposite to each other; the spacing between the two working barges is controlled to be maintained at the preset spacing, and the length difference of the two diagonals is controlled to be less than the preset diagonal deviation, so that the relative position relationship of the two working barges is maintained within the set relative position relationship range.

7. The method for assembling a multifunctional ship for inland river immersed tube tunnel construction according to claim 5, characterized in that: In the step of installing the crossbeam hoisting section, after the hoisting section is hoisted between the two pre-installed sections, it also includes installing screw-type tensioners between the top surface and the side surfaces of the butt ends of the hoisting section and the pre-installed section respectively, using the screw-type tensioners to pre-tension the hoisting section and the pre-installed section, and adjusting the tensioning degree of the screw-type tensioners at different positions so that the butt ends of the hoisting section and the pre-installed section are adjusted to be flush.

8. The method for assembling a multifunctional ship for inland river immersed tube tunnel construction according to claim 5, characterized in that: In the step of installing the crossbeam hoisting section, the top surface of the butt end of the hoisting section and the top surface of the butt end of the pre-installed section are position-welded by means of a strap pre-installed on the top surface of the butt end of the hoisting section, the bottom surface of the butt end of the hoisting section and the bottom surface of the butt end of the pre-installed section are position-welded by means of a support plate pre-installed on the bottom surface of the butt end of the pre-installed section, and the side surface of the butt end of the hoisting section and the side surface of the butt end of the pre-installed section are position-welded by means of a positioning plate.

9. The method for assembling a multifunctional ship for inland river immersed tube tunnel construction according to claim 5, characterized in that: In the step of installing the crossbeam hoisting section, the specific steps of recovering the jacking device and reducing the working force of the crane ship on the hoisting section to zero are: controlling the jacking device to retract once according to the set retraction stroke, and at the same time adjusting the ballast water of the two working barges to overcome the heeling movement trend of the working barge caused by the retraction of the jacking device, and the crane ship unloading once according to the set unloading amount to reduce the force on the hoisting section; repeating the above-mentioned jacking device retraction, ballast water load adjustment and crane ship unloading process until the jacking device is separated from the pre-installed section, and the force of the crane ship on the hoisting section is reduced to zero when the hoisting section and the two working barges maintain a positive buoyant equilibrium state.

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