Disassembly and assembly transfer method of full-section prefabricated formwork for large immersed tube in limited space

Abstract

A method for disassembling and transferring a large-scale immersed tube full-section prefabricated template in a limited space, wherein the outer mold trolley is evenly divided into two outer trolley parts, the first outer trolley part is translated to the front side of the second immersed tube prefabrication area, the first outer trolley part is horizontally rotated to the longitudinal direction, the second outer trolley part is translated to the front side of the second immersed tube prefabrication area, the second outer trolley part is horizontally rotated to an inclined state, the second outer trolley part is translated longitudinally backward to the rear side of the first outer trolley part, the first outer trolley part and the second outer trolley part are both horizontally rotated to the transverse direction, and the two are assembled into an outer mold trolley. In the embodiment of the present invention, the prefabricated template is split into multiple trolley modules, so that the trolley module can be translated along the transverse construction channel to the second immersed tube prefabrication area, and the trolley modules are transported to the second immersed tube prefabrication area one by one by means of transverse translation and rotation. The front and rear order of the trolley modules is kept consistent in the two immersed tube prefabrication areas, so that the trolley modules can be reassembled into a prefabricated template, the transporting steps are less, and the construction speed is fast.

Description

Technical Field

[0001] The invention belongs to the technical field of immersed tube tunnel construction, and in particular relates to a method for disassembling and assembling a prefabricated template for a large immersed tube in a limited space. Background Art

[0002] During the construction of immersed tube tunnel, it is necessary to build a dry dock on the bank first so that immersed tubes can be prefabricated in the dry dock. Immersed tube tunnels are generally composed of multiple immersed tubes, all of which need to be prefabricated and displayed in the limited construction area of ​​the dry dock. However, the area occupied by the dry dock is limited due to the existing construction facilities on the bank. This limitation results in very narrow spacing between the immersed tube prefabrication area and the dock wall, as well as the spacing between adjacent immersed tube prefabrication areas.

[0003] As the immersed tube tunnel adopts a large-section structure, the width of the immersed tube increases, and the area required for prefabricating the immersed tube also increases, making the space in the dry dock even more compact. As a result, the distance between the immersed tube prefabrication area and the dock wall and between adjacent immersed tube prefabrication areas is further reduced, exacerbating the problem of insufficient space.

[0004] In the process of prefabricating immersed tubes, the mold trolley is an indispensable equipment. The immersed tube is generally divided into multiple tube sections and prefabricated separately. After all the tube sections are prefabricated, they are connected into one immersed tube. The mold trolley moves along the length direction of the immersed tube to prefabricate the tube sections one by one. In order to control the construction cost, immersed tubes of the same specifications usually use the same set of mold trolleys. In order to effectively utilize the construction space, immersed tubes of the same specifications are arranged side by side in the dry dock. After the mold trolley completes the prefabrication of all the tube sections of an immersed tube from one end to the other, it needs to be transferred to the prefabrication area of ​​another adjacent immersed tube. However, due to the small spacing between the prefabrication area of ​​the immersed tube and the dock wall and between adjacent prefabrication areas, the prefabricated immersed tubes will also cause obstacles, making it impossible to directly move the mold trolley to the next row.

[0005] If the mold trolley is hoisted and passed over the prefabricated pipe segments, it is very difficult to maintain its balance during the hoisting process due to its heavy weight. Once it loses balance and falls during the hoisting process, it will not only cause damage to the mold trolley, but also smash and damage the prefabricated pipe segments, making them need to be prefabricated again, increasing construction costs and extending the construction period of immersed tube prefabrication. In immersed tube tunnel projects, after the immersed tubes are prefabricated, they need to be sunk and installed underwater. The underwater sinking and installation is affected by the season, weather and tides. If the prefabrication of the immersed tubes is delayed, it will have a very large impact on the subsequent sinking and installation schedule. Summary of the invention

[0006] In view of the deficiencies existing in the related art, the present invention provides a method for disassembling and assembling a prefabricated template of a large immersed tube in a limited space, so as to solve the problem that the mold trolley for the current immersed tube prefabrication cannot be translated and transported.

[0007] The present invention provides a method for disassembling and transferring a large-scale immersed tube full-section prefabricated template in a limited space. The dry dock has a dock wall. The construction site surrounded by the dock wall has a first immersed tube prefabrication area and a second immersed tube prefabrication area arranged side by side in a transverse manner, so that two transverse construction channels and three longitudinal construction channels are formed around the first immersed tube prefabrication area and the second immersed tube prefabrication area. The prefabricated template includes an outer template trolley located in the first immersed tube prefabrication area. The specific steps of the transfer method are as follows:

[0008] The outer mold trolley is evenly divided into two outer trolley parts, so that the transverse construction channel and the longitudinal construction channel can each accommodate an outer trolley part, and the two outer trolley parts are respectively the first outer trolley part and the second outer trolley part, one in front and one in the back;

[0009] The first outer trolley is longitudinally moved forward out of the first immersed tube prefabrication area, and is transversely moved along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and the first outer trolley is horizontally rotated to the longitudinal direction, and is located in the longitudinal construction channel away from the first immersed tube prefabrication area;

[0010] The second outer trolley is longitudinally moved forward out of the first immersed tube prefabrication area, and is transversely moved along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and the second outer trolley is horizontally rotated to an inclined state so that one end of the second outer trolley is located above the second immersed tube prefabrication area and the other end is longitudinally aligned with the longitudinal construction channel in the middle, and the second outer trolley is longitudinally moved backward to the rear side of the first outer trolley;

[0011] The first outer trolley part and the second outer trolley part are both rotated horizontally to a lateral direction, and the two are assembled into an outer mold trolley.

[0012] In some embodiments, the prefabricated template further includes an inner mold trolley located in the first immersed tube prefabrication area, the front end of the first immersed tube prefabrication area faces the dock door of the dry dock, and the transfer method further includes the following steps:

[0013] The inner mold trolley is evenly divided into two outer trolley parts, so that the docking area and the transverse construction channel behind the dock door can each accommodate an inner trolley part, and the two inner trolley parts are respectively the first inner trolley part and the second inner trolley part, one in front and one in the back;

[0014] The first inner trolley part is longitudinally translated forward to the dock area, the second inner trolley part is longitudinally translated forward out of the first immersed tube prefabrication area, and is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area, and the second inner trolley part is longitudinally translated backward to the second immersed tube prefabrication area;

[0015] The first inner trolley part is moved longitudinally backward out of the dock area, and is laterally translated along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, the first inner trolley part is moved longitudinally backward into the second immersed tube prefabrication area, and is combined with the second inner trolley part behind it to form an inner mold trolley.

[0016] In some of the embodiments, the prefabricated template further comprises a middle gallery template trolley located in the first immersed tube prefabrication area, the front end of the first immersed tube prefabrication area faces the dock door of the dry dock, and the transfer method further comprises the following steps;

[0017] The middle corridor template trolley is evenly divided into four corridor trolley parts along the longitudinal direction, so that the longitudinal length of the corridor trolley part is smaller than the longitudinal width of the transverse construction channel. The four corridor trolley parts are the first corridor trolley part, the second corridor trolley part, the third corridor trolley part and the fourth corridor trolley part from front to back;

[0018] The first corridor trolley unit, the second corridor trolley unit, and the third corridor trolley unit are integrally moved forward to the front side of the first immersed tube prefabrication area, so that the first corridor trolley unit and the second corridor trolley unit enter the docking area;

[0019] The third corridor trolley is laterally translated to the side away from the second immersed tube prefabrication area, the fourth corridor trolley is longitudinally moved forward out of the first immersed tube prefabrication area, and is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area, and the fourth corridor trolley is longitudinally translated backward to the second immersed tube prefabrication area;

[0020] The third corridor trolley is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area, and then longitudinally translated backward to the front side of the fourth corridor trolley;

[0021] Move the second corridor trolley unit and the first corridor trolley unit longitudinally backward out of the docking area in sequence, and translate them transversely along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and then translate them longitudinally backward into the second immersed tube prefabrication area, so that the second corridor trolley unit is located in front of the third corridor trolley unit, and the second corridor trolley unit is located in front of the first corridor trolley unit;

[0022] The first corridor trolley section, the second corridor trolley section, the third corridor trolley section and the fourth corridor trolley section are assembled into a middle corridor template trolley.

[0023] In some embodiments, the front transverse construction channel is divided into two sections, one section is located in front of the first immersed tube prefabrication area, and its longitudinal width is B1, and the other end is located in front of the second immersed tube prefabrication area, and its longitudinal width is B3, B3<B1.

[0024] In some of the embodiments, the corners of the dry dock are chamfered, and before the first outer trolley portion is horizontally rotated to the longitudinal direction, the first outer trolley portion in the transverse direction is first translated backward to the front end of the second immersed tube prefabrication area.

[0025] In some of the embodiments, when the first outer trolley part is horizontally rotated to the longitudinal direction, the rotation center is located on one side of the middle part of the first outer trolley part close to the first immersed tube prefabrication area; when the second outer trolley part is horizontally rotated to an inclined state, the rotation center is located on one end of the second outer trolley part close to the first immersed tube prefabrication area.

[0026] In some embodiments, there are two inner mold trolleys, which are transported from the first immersed tube prefabrication area to the second immersed tube prefabrication area in sequence.

[0027] In some of the embodiments, the middle corridor formwork trolley includes a walking beam and a formwork support frame capable of moving on the walking beam. When the middle corridor formwork trolley is disassembled, the walking beam is disassembled into four sections, and the formwork support frame is disassembled into two sections, and both are located on the sections corresponding to the walking beam.

[0028] In some of the embodiments, the construction site further has a third immersed tube prefabrication area arranged laterally, and the third immersed tube prefabrication area extends from the rear side of the first immersed tube prefabrication area to the rear side of the second immersed tube prefabrication area, so that the first immersed tube prefabrication area, the second immersed tube prefabrication area and the third immersed tube prefabrication area are arranged in a herringbone shape, and a horizontal construction channel is further formed on the rear side of the third immersed tube prefabrication area.

[0029] In some of the embodiments, the longitudinal width of the transverse construction channel is less than Y, where Y is the longitudinal width of the outer mold trolley;

[0030] The transverse width of the longitudinal construction channel is greater than X and less than 1.5X, X is the transverse width of the outer and inner support frames of the outer mold trolley, and Z is the longitudinal length of the outer and inner support frames of the outer mold trolley, and Z is greater than X.

[0031] Based on the above technical scheme, in the embodiment of the present invention, the prefabricated template is split into multiple trolley modules, so that the trolley module can be completely moved out of the prefabricated pipe sections in the first immersed tube prefabrication area, and can be translated to the second immersed tube prefabrication area along the horizontal construction channel, and further by means of horizontal translation and rotation, the trolley modules are transported to the second immersed tube prefabrication area one by one, and the front and rear order of the trolley modules is consistent in the two immersed tube prefabrication areas, so that the trolley modules can be combined into a prefabricated template again, and the translation and translation of the prefabricated template is realized when a series of multiple pipe sections have been prefabricated in the first immersed tube prefabrication area and its peripheral space is narrow. During the translation, the trolley module is at a low height from the ground and will not pass over the top of the prefabricated pipe sections in the first immersed tube prefabrication area. The risk of the trolley module falling and being damaged is low, and the balance requirement during the translation is low, and the pipe sections will not be damaged, thereby avoiding the extension of the construction period caused by this, and solving the problem that the current mold trolley for immersed tube prefabrication cannot be translated and translated. 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 It is a construction site schematic diagram of the prefabricated template before it is transported in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention;

[0034] Figure 2 It is a layout structure diagram of the prefabricated template in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention;

[0035] Figure 3 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 4 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 5 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 3 ;

[0038] Figure 6 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 4 ;

[0039] Figure 7 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 5 ;

[0040] Figure 8 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 6 ;

[0041] Fig. 9 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 7 ;

[0042] Fig.10 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 8 ;

[0043] Fig.11 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 9 ;

[0044] Fig.12 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 10 ;

[0045] Fig.13 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 10 one;

[0046] Fig.14 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 10 two;

[0047] Fig.15 The schematic diagram of the construction process of the external formwork trolley in the method for disassembling and transferring the large-scale immersed tube full-section prefabricated formwork in a limited space of the present invention is shown in FIG. Figure 10 three;

[0048] Fig.16 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 1 ;

[0049] Fig.17 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 2 ;

[0050] Fig.18 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 3 ;

[0051] Fig.19 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 4 ;

[0052] Fig. 20 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 5 ;

[0053] Fig.21 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 6 ;

[0054] Fig. 22 The schematic diagram of the construction process of the inner mold trolley in the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space of the present invention is shown in FIG. Figure 7 ;

[0055] Fig.23 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 1 ;

[0056] Fig.24 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 2 ;

[0057] Fig.25 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 3 ;

[0058] Fig.26 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 4 ;

[0059] Fig. 27 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 5 ;

[0060] Fig.28 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 6 ;

[0061] Fig.29 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 7 ;

[0062] Fig.30 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 8 ;

[0063] Fig.31 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 9 ;

[0064] Fig.32 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 10 ;

[0065] Fig.33 The schematic diagram of the construction process of the middle corridor template trolley in the limited space large immersed tube full section prefabricated template disassembly and transfer method of the present invention is shown in FIG. Figure 10 one;

[0066] In the figure:

[0067] 1. Dry dock; 11. Dock wall; 12. Dock door; 13. Dock entrance area; 14. Braced wall;

[0068] 21. The first immersed tube prefabrication area; 22. The second immersed tube prefabrication area; 23. The third immersed tube prefabrication area;

[0069] 3. External mold trolley; 3A. First external trolley portion; 3B. Second external trolley portion; 31. External support frame; 32. Truss; 33. First end; 34. Second end;

[0070] 4. Inner mold trolley; 4A. First inner trolley unit; 4B. Second inner trolley unit;

[0071] 5. Middle corridor formwork trolley; 5A. First corridor trolley unit; 5B. Second corridor trolley unit; 5C. Third corridor trolley unit; 5D. Fourth corridor trolley unit; 51. Walking beam; 52. Formwork support frame;

[0072] 61. First longitudinal aisle; 62. Second longitudinal aisle; 63. Third longitudinal aisle; 64. First transverse aisle; 65. Second transverse aisle; 66. Third transverse aisle. DETAILED DESCRIPTION

[0073] 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.

[0074] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0075] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0076] 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.

[0077] like Figures 1 to 33 As shown, in an illustrative embodiment of the method for disassembly, assembly and transfer of full-section prefabricated templates for large immersed tubes in a limited space of the present invention, the dry dock 1 has a dock wall 11, and the construction site enclosed by the dock wall 11 has a first immersed tube prefabrication area 21 and a second immersed tube prefabrication area 22 arranged side by side in a transverse manner.

[0078] The prefabricated formwork includes an outer formwork and an inner formwork. Concrete is poured between the outer formwork and the inner formwork to form the pipe section of the immersed tube. Since the single-section immersed tube is not only longer but also has a large-section structure, its width is also larger. The outer formwork and the inner formwork are respectively installed on the outer formwork trolley 3 and the inner formwork trolley 4, so that they can move along the length direction of the immersed tube prefabrication area through wheels, tracks and legs to prefabricate the pipe sections one by one.

[0079] The outer mold trolley 3 is located in the first immersed tube prefabrication area 21 and needs to be transported from the first immersed tube prefabrication area 21 to the second immersed tube prefabrication area 22. The outer mold trolley 3 has two outer support frames 31 and a truss 32 installed between the two outer support frames 31, so that it is in the shape of a gantry. The pipe segments prefabricated in the first immersed tube prefabrication area 21 are located inside and below the outer mold trolley 3. The outer mold trolley 3 can only move along the length direction of the first immersed tube prefabrication area 21 to get out of the pipe segment.

[0080] After the first immersed tube prefabrication area 21 and the second immersed tube prefabrication area 22 were demarcated at the construction site, two transverse construction passages and three longitudinal construction passages were formed in the remaining area. The two transverse construction passages are the first transverse passage 64 and the second transverse passage 65. The first transverse passage 64 is located at the front side, and is composed of the space between the front end of the first immersed tube prefabrication area 21 and its longitudinally adjacent dock wall, and the space between the front end of the second immersed tube prefabrication area 22 and its longitudinally adjacent dock wall 11; the second transverse passage 65 is located at the rear side, and is composed of the space between the rear end of the first immersed tube prefabrication area 21 and its longitudinally adjacent dock wall 11, and the space between the rear end of the second immersed tube prefabrication area 22 and its longitudinally adjacent dock wall 11. The three longitudinal construction passages are respectively the first longitudinal aisle 61, the second longitudinal aisle 62 and the third longitudinal aisle 63. The first longitudinal aisle 61 is the space between the first immersed tube prefabrication area 21 and the adjacent dock wall 11 on one side. The second longitudinal aisle 62 is the space between the second immersed tube prefabrication area 22 and the adjacent dock wall 11 on one side. The third longitudinal aisle 63 is the space between the first immersed tube prefabrication area 21 and the second immersed tube prefabrication area 22.

[0081] The method for disassembling and assembling the full-section prefabricated template of the large immersed tube in a limited space is as follows: Figures 3 to 15 As shown, the specific steps are as follows:

[0082] The outer mold trolley 3 is evenly divided into two outer trolley parts along the longitudinal direction, so that the transverse construction channel can only accommodate one outer trolley part in the longitudinal direction and the longitudinal construction channel in the transverse direction. The two outer trolley parts are respectively a first outer trolley part 3A and a second outer trolley part 3B located at the rear side of the first outer trolley part 3A, and both ends of the outer trolley part are respectively set as a first end 33 and a second end 34. The first end 33 is an end of the outer mold trolley 3 away from the second immersed tube prefabrication area 22 when the outer mold trolley 3 is located in the first immersed tube prefabrication area 21, and the second end 34 is an end of the outer mold trolley 3 close to the second immersed tube prefabrication area 22 when the outer mold trolley 3 is located in the first immersed tube prefabrication area 21.

[0083] The first outer trolley part 3A is translated longitudinally forward to the space between the front end of the first immersed tube prefabrication area 21 and the front dock wall 11 , so as to enter the first transverse aisle 64 .

[0084] The first outer trolley part 3A is translated laterally through the first transverse aisle 64 to the space between the front end of the second immersed tube prefabrication area 22 and the front dock wall 11, and its first end 33 is aligned with the space between the first immersed tube prefabrication area 21 and the second immersed tube prefabrication area 22.

[0085] The first outer carriage portion 3A is horizontally rotated 90 degrees to the longitudinal direction so that the first end 33 thereof faces the rear side.

[0086] The first outer trolley part 3A is translated transversely to the space between the second immersed tube prefabrication area 22 and the adjacent dock wall 11 on one side so as to be located in the second longitudinal aisle 62 .

[0087] The second outer trolley part 3B is translated longitudinally forward to the space between the front end of the first immersed tube prefabrication area 21 and the front side dock wall 11 .

[0088] The second outer trolley part 3B is translated transversely to the space between the front end of the second immersed tube prefabrication area 22 and the front dock wall 11 through the first transverse passage 64, and its second end 34 is adjacent to the first outer trolley part 3A.

[0089] The second outer trolley part 3B is horizontally rotated at a set angle, and one end thereof close to the second immersed tube prefabrication area 22 is moved backward, so that the second outer trolley part 3B is inclined relative to the first outer trolley part 3A.

[0090] The second outer trolley part 3B is translated along the straight line where the second outer trolley part 3B is located until the first end 33 thereof moves to be aligned with the space between the first immersed tube prefabrication area 21 and the second immersed tube prefabrication area 22 in the longitudinal direction.

[0091] The second outer carriage portion 3B is translated longitudinally and rearwardly to move the second end 34 thereof to the rear side of the first end 33 of the first outer carriage portion 3A.

[0092] The second outer trolley part 3B is rotated horizontally to be in a transverse direction, and the second end 34 thereof is moved to the space between the second immersed tube prefabrication area 22 and the adjacent dock wall 11 on one side.

[0093] The first outer carriage part 3A is rotated horizontally to be in a lateral direction, with both ends thereof being located at two sides of the second immersed tube prefabrication area 22 respectively.

[0094] The first outer carriage portion 3A and the second outer carriage portion 3B are assembled into the outer mold carriage 3 .

[0095] The outer mold trolley 3 is evenly split, and the first outer trolley part 3A and the second outer trolley part 3B have the same external dimensions, ensuring that both can be removed from the prefabricated immersed tube and move horizontally in the area outside the end of the immersed tube prefabrication area. The first outer trolley part 3A and the second outer trolley part 3B are one in front of the other, and the rear edge of the first outer trolley part 3A matches the front edge of the second outer trolley part 3B, so that the rear side of the first outer trolley part 3A and the front side of the second outer trolley part 3B are assembled into the outer mold trolley 3 when spliced. If the first outer trolley part 3A is behind the second outer trolley part 3B, the first outer trolley part 3A and the second outer trolley part 3B need to be rotated 180° so that the edges of the two that can be combined and spliced ​​are opposite, but this method of transporting the first immersed tube prefabrication area 21 to the second urban management prefabrication area is huge and time-consuming.

[0096] The first outer trolley part 3A is rotated longitudinally and moved outwardly to the second longitudinal aisle 62, freeing up space in the second immersed tube prefabrication area 22 and the third longitudinal aisle 63, thereby providing space for the second outer trolley part 3B to be transported to the rear side of the first outer trolley part 3A.

[0097] By moving the second outer trolley part 3B to the rear side of the first outer trolley part 3A and turning it straight (i.e. rotating it to the horizontal direction), the edge of one side of the first outer trolley part 3A can be facing backwards, and the edge of one side of the second outer trolley part 3B can be facing forwards. The first outer trolley part 3A and the second outer trolley part 3B can be connected and combined into the outer mold trolley 3 in the same posture as in the first immersed tube prefabrication area 21. During the reverse transportation process, the rotation amplitude and the translation amplitude of the first outer trolley part 3A and the second outer trolley part 3B are minimized, which reduces the reverse transportation workload and shortens the reverse transportation construction period.

[0098] There are only two immersed tube prefabrication areas arranged side by side and arranged longitudinally in the construction area of ​​the dry dock 1. After all the sections of the immersed tube on the first immersed tube prefabrication area 21 are prefabricated, only the second immersed tube prefabrication area 22 and the transverse construction channel and the longitudinal construction channel around it are left on one side. After the first outer trolley part 3A is translated and rotated to the second longitudinal aisle 62 outside the second immersed tube prefabrication area 22, it cannot move further outward. Only the second immersed tube prefabrication area 22 and the third longitudinal aisle 63 are left for the second outer trolley part 3B to translate backward, so that it moves to the rear side of the first outer trolley part 3A, and after both are straightened, they are connected and assembled into the outer mold trolley 3. Most of the space in the construction area is occupied by the two immersed tube prefabrication areas, and the space for the outer mold trolley 3 to move and adjust the angle is limited.

[0099] When the outer mold trolley 3 is divided into three outer trolley parts, the three outer trolley parts need to be moved and rotated, and the number of actions increases. Since the tower crane is used for traction during reverse transportation, the outer trolley parts that switch to action need to switch the tower crane's hoist to the corresponding outer trolley part. The switching of the connection between the tower crane and the outer trolley part will also consume a certain amount of time, and the number of assembly connection nodes is increased to two, which increases the workload of the reverse transportation operation.

[0100] It is also troublesome to adjust the position and assemble the three outer trolley parts in the second immersed tube prefabrication area 22. Specifically, in the first method, the three outer trolley parts are connected one by one from back to front in the second immersed tube prefabrication area 22 in reverse order to form the outer mold trolley 3. The three outer trolley parts need to be rotated 180 degrees, which requires a large amount of work and is difficult to work with. In the second method, the three outer trolley parts are connected one by one from front to back to form the outer mold trolley 3 in the second immersed tube prefabrication area 22 in the same order as the first immersed tube prefabrication area 21. The first outer trolley part and the second outer trolley part need to be rotated to the longitudinal direction in the area where the second immersed tube prefabrication area 22 is located in the dry dock 1 to provide space for the third outer trolley part to move to the rear side of the two. However, the transverse length of the outer mold trolley 3 is relatively large, and the transverse length of the first outer trolley part is the same as the outer mold trolley 3 as a whole. If the first outer trolley part and the second outer trolley part rotated to the longitudinal direction are arranged in sequence in the longitudinal direction, they will completely occupy the second longitudinal aisle 62. The third outer trolley part cannot move to the rear side of the second outer trolley part, and cannot be straightened. The first outer trolley part needs to be straightened first to free up the space in front of the second longitudinal aisle 62 to move the second outer trolley part forward. Only then can the third outer trolley part be moved to the rear side of the second outer trolley part and straightened. The operation is more cumbersome and the workload of reverse transportation increases. Large; if the first outer trolley part and the second outer trolley part rotated to the longitudinal direction are arranged in sequence in the horizontal direction at the front, not only the width of the remaining space in the horizontal direction is reduced, the angle required for the third outer trolley part to rotate is increased, and when the third outer trolley part is laterally translated to the front side of the second immersed tube prefabrication area 22, more parts of its first end 33 outer support frame 31 are still in front of the prefabricated pipe section in the first immersed tube prefabrication area 21, that is, the length of the part of the third outer trolley part left in front of the prefabricated pipe section is longer, and the first horizontal aisle 64 is narrower. As the third outer trolley part rotates at a large angle, the front side of this part is easy to collide with the front dock wall 11, and the rear side is easy to collide with the prefabricated pipe section, and the two sides contact the dock wall 11 and the pipe section respectively. The third outer trolley part cannot remove this part from the front side of the prefabricated pipe section in the first immersed tube prefabrication area 21 when moving along its straight line. The third outer trolley part is stuck, and the outer mold trolley 3 cannot be transported to the second immersed tube prefabrication area 22.

[0101] The number of split outer trolley parts of the outer mold trolley 3 is further increased to four, which will not only further increase the workload of moving, rotating and assembling, but also when the above-mentioned second method is adopted, the second longitudinal aisle 62 can only accommodate two sections of the outer trolley parts rotated to the longitudinal direction, namely the first section and the second section. In order to allow the subsequent section to move to the rear side of the third section, the third section needs to be horizontally parallel to the first section or the second section, which not only reduces the width of the horizontal space for the fourth section, but also in order to free up space for the fourth section to return to the rear end of the second immersed tube prefabrication area 22, the first section or the second section needs to rotate and move forward, and the third section hinders the movement of the first section or the second section, and because the first section and the second section occupy the second longitudinal aisle 62, the third section cannot return to the center, and the reverse transportation link is stuck and cannot be carried out further, thereby failing to complete the reverse transportation of the outer trolley parts in the same arrangement direction.

[0102] Therefore, the outer mold trolley 3 is divided into two outer trolley parts, which reduces the workload of movement, rotation and assembly. With a minimum of moving steps, rotation adjustment angles and tower crane connection switching, the outer mold trolley 3 can be transported from the first immersed tube prefabrication area 21 to the second immersed tube prefabrication area 22, and the first outer trolley part 3A and the second outer trolley part 3B are kept in a front-and-rear positional relationship, with the connecting parts of the two facing each other, and are smoothly assembled into the outer mold trolley 3.

[0103] The dry dock is equipped with three tower cranes, located in the center of the front end and at the rear of both sides, so as to cover the construction area and transport the mold trolleys.

[0104] In the above-mentioned exemplary embodiment, the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space is to split the prefabricated template into multiple trolley modules, so that the trolley modules can be completely moved out of the prefabricated pipe sections in the first immersed tube prefabrication area, and can be translated to the second immersed tube prefabrication area along the transverse construction channel, and further transported to the second immersed tube prefabrication area one by one by transverse translation and rotation, and the front and rear order of the trolley modules is kept consistent in the two immersed tube prefabrication areas, so that the trolley modules can be reassembled into the prefabricated template , and there are fewer steps for reverse transportation, and the construction speed is fast. When a series of pipe segments have been prefabricated in the first immersed tube prefabrication area and its peripheral space is small, the prefabricated template can be reversed by translation. During the reverse transportation, the trolley module is low from the ground and will not pass over the top of the prefabricated pipe segments in the first immersed tube prefabrication area. The risk of the trolley module falling and being damaged is low, and the balance requirement during the translation process is low, and the pipe segments will not be damaged, thereby avoiding the extension of the construction period and solving the problem that the current immersed tube prefabrication mold trolley cannot be translated and reversed.

[0105] In some embodiments, the prefabricated template further includes an inner mold trolley 4 located in the first immersed tube prefabrication area 21, the longitudinal length of the inner mold trolley 4 is substantially the same as that of the outer mold trolley 3, the front end of the first immersed tube prefabrication area 21 faces the dock door 12 of the dry dock 1, and the transfer method further includes a method for reversing the inner mold trolley 4, such as Figures 16 to 22 As shown, the specific steps are as follows:

[0106] The inner mold trolley 4 is evenly divided into two inner trolley parts along the longitudinal direction, namely the first inner trolley part 4A and the second inner trolley part 4B located at the rear side thereof, so that the dock area at the rear side of the dock door can only accommodate one inner trolley part, and the horizontal construction channel can only accommodate one inner trolley part in the longitudinal direction.

[0107] The first inner trolley part 4A is translated longitudinally forward, moved out of the prefabricated pipe segment, moved to the front side of the first immersed tube prefabrication area 21 , and placed in the docking area 13 of the dry dock 1 .

[0108] The second inner trolley part 4B is translated forward longitudinally, moved out of the prefabricated pipe section, moved to the front side of the first immersed tube prefabrication area 21, and aligned with the space between the front end of the second immersed tube prefabrication area 22 and the adjacent dock wall 11 in the transverse direction.

[0109] The second inner trolley portion 4B is translated transversely and moved along the first transverse passage 64 to the front side of the second immersed tube prefabrication area 22 .

[0110] The second inner trolley portion 4B is translated longitudinally and backward to the front end of the second immersed tube prefabrication area 22 .

[0111] The first inner trolley portion 4A is translated longitudinally and backwards to be moved out of the dock opening area 13 and to be aligned laterally with the space between the front end of the second immersed tube prefabrication area 22 and the adjacent dock wall 11 .

[0112] The first inner trolley portion 4A is translated transversely to move its first transverse passage 64 to the front side of the second immersed tube prefabrication area 22 .

[0113] The first inner trolley portion 4A is translated longitudinally and backward to the front end of the second immersed tube prefabrication area 22 .

[0114] The first inner carriage part 4A and the second inner carriage part 4B are assembled into the inner mold carriage 4 .

[0115] Both the inner mold trolley 4 and the outer mold trolley 3 are transported from the first immersed tube prefabrication area 21 to the second immersed tube prefabrication area 22, so that the various pipe sections corresponding to the immersed tubes in the first immersed tube prefabrication area 21 are prefabricated first, and then the various pipe sections are combined in the first immersed tube prefabrication area 21 to form the first immersed tube. The first immersed tube prefabrication area 21 is opposite to the dock gate 12, so that the first immersed tube that has been prefabricated first can be the first to pass through the dock gate 12 to leave the dry dock 1 for sinking and installation, thereby improving the construction efficiency of the immersed tube tunnel.

[0116] If the inner mold trolley 4 is transported to the second immersed tube prefabrication area 22 before the outer mold trolley 3, the inner mold trolley 4 in the second immersed tube prefabrication area 22 will hinder the lateral movement, rotation and longitudinal movement of the two outer mold trolley parts of the outer mold trolley 3. Therefore, after the outer mold trolley 3 is transported from the first immersed tube prefabrication area 21 to the front end of the second immersed tube prefabrication area 22, the inner mold trolley 4 is transported from the first immersed tube prefabrication area 21 to the inside of the outer mold trolley 3 at the front end of the second immersed tube prefabrication area 22. Furthermore, since the two outer trolley parts of the outer mold trolley 3 still maintain the same front-to-back order in the second immersed tube prefabrication area 22, the two inner trolley parts of the inner mold trolley 4 also need to maintain the same front-to-back order after being transported to the second immersed tube prefabrication area 22. Therefore, the first inner trolley part 4A is first moved longitudinally out of the prefabricated immersed tube and temporarily stored in the dock area 13, freeing up the first transverse aisle 64 on the front side of the first immersed tube prefabrication area 21, so that the second inner trolley part 4B can be moved longitudinally out of the prefabricated pipe section and translated to the second immersed tube prefabrication area 22. Finally, the first inner trolley part 4A is moved out of the dock area 13 and translated to the second immersed tube prefabrication area 22, so that it is located in front of the second inner trolley part 4B. The first inner trolley part 4A and the second inner trolley part 4B are maintained in a front-to-back positional relationship in the second immersed tube prefabrication area 22, and the connecting parts of the two are relative, so they are smoothly assembled into the inner mold trolley 4.

[0117] Since the dock door 12 of the dry dock 1 needs to withstand external water pressure, in order to reinforce it, the dock area 13 is also provided with a diagonal support wall 14 to support the dock door 12. There is only a triangular area in the dock area 13 that is not occupied by the diagonal support wall 14, and this area can only accommodate half of the inner mold trolley 4. When the inner mold trolley 4 is divided into three inner trolley parts, after the first two sections of the inner trolley parts are longitudinally moved into the dock area 13, the rear end of the second section of the inner trolley part will be retained in the first transverse aisle 64, preventing the third section of the inner trolley part from being completely moved longitudinally out of the prefabricated immersed tube. If the dock area 13 only temporarily stores the first section, the second section is first offset away from the second immersed tube prefabrication area 22, or it is directly translated to the second immersed tube prefabrication area 22 and then reversed with the third section in order, the translation construction steps will be increased, the number of tower crane connection switches will be increased, the transportation will be more cumbersome, and the construction period will be longer. Further increasing the number of internal trolleys split from the inner mold trolley 4 will further increase the complexity of avoidance and sequence reversal between the internal trolley parts, increase the number of movements of the internal trolley parts and the number of tower crane connection switches, and increase the construction period.

[0118] Therefore, the inner mold trolley 4 is divided into two inner trolley parts and temporarily stored in the dock area 13, avoiding unnecessary avoidance actions, sequence reversal actions and tower crane connection switching during the transportation process, and realizing the transportation of the inner mold trolley 4 from the first immersed tube prefabrication area 21 to the second immersed tube prefabrication area 22 with a minimum of construction steps, while keeping the first inner trolley part 4A and the second inner trolley part 4B in a front-and-rear positional relationship, with the connection parts of the two facing each other, and smoothly assembled into the inner mold trolley 4.

[0119] In some embodiments, when the immersed tube has an intermediate corridor, the prefabricated template further includes an intermediate corridor template trolley 5 located in the first immersed tube prefabrication area 21, and the longitudinal length of the intermediate corridor template trolley 5 is approximately twice the longitudinal length of the outer template trolley 3. The front end of the first immersed tube prefabrication area 21 faces the dock door 12 of the dry dock 1. Figure 23 to Figure 33 As shown, the transition method further includes the following steps:

[0120] The middle corridor formwork trolley 5 is evenly divided into four corridor trolley parts along the longitudinal direction, namely, from front to back, the first corridor trolley part 5A, the second corridor trolley part 5B, the third corridor trolley part 5C and the fourth corridor trolley part 5D, so that the longitudinal length of each corridor trolley part is smaller than the longitudinal width of the transverse construction channel.

[0121] The first corridor trolley section 5A, the second corridor trolley section 5B and the third corridor trolley section 5C are moved forward as a whole to the front side of the first immersed tube prefabrication area 21, so that the first corridor trolley section 5A and the second corridor trolley section 5B enter the dock area 13, and the third corridor trolley section 5C is laterally aligned with the space between the front end of the second immersed tube prefabrication area 22 and the adjacent dock wall 11.

[0122] The third corridor trolley portion 5C is laterally translated to the left side behind the second corridor trolley portion 5B.

[0123] The fourth corridor trolley section 5D is translated forward to the front side of the first immersed tube prefabrication area 21 so as to be aligned with the space between the front end of the second immersed tube prefabrication area 22 and the adjacent dock wall 11 in the transverse direction.

[0124] The fourth corridor trolley 5D is laterally translated to the front side of the second immersed tube prefabrication area 22, and then longitudinally translated backward to the inside of the second immersed tube prefabrication area 22;

[0125] The third corridor trolley part 5C is translated transversely to the front side of the second immersed tube prefabrication area 22, and then translated longitudinally backward into the second immersed tube prefabrication area 22, so that it is located in front of the fourth corridor trolley part 5D.

[0126] Move the second corridor trolley part 5B longitudinally backward out of the dock area 13 and align it laterally with the space between the front end of the second immersed tube prefabrication area 22 and the adjacent dock wall 11, then translate it laterally to the front side of the second immersed tube prefabrication area 22, and then translate it longitudinally backward into the second immersed tube prefabrication area 22 so that it is located at the front side of the third corridor trolley part 5C.

[0127] Move the first corridor trolley part 5A longitudinally backward out of the dock area 13 and align it laterally with the space between the front end of the second immersed tube prefabrication area 22 and the adjacent dock wall 11, then translate it laterally to the front side of the second immersed tube prefabrication area 22, and then translate it longitudinally backward into the second immersed tube prefabrication area 22 so that it is located at the front side of the second corridor trolley part 5B.

[0128] The first corridor trolley section 5A, the second corridor trolley section 5B, the third corridor trolley section 5C and the fourth corridor trolley section 5D are assembled into the middle corridor formwork trolley 5 .

[0129] The dock area 13 at the rear side of the dock gate 12 is effectively utilized to temporarily store two sections of the corridor trolley parts. Only the third section needs to perform an evasive action to transport the four-section corridor trolley parts one by one to the second immersed tube prefabrication area 22, and the four-section corridor trolleys maintain the same arrangement order from front to back as the first immersed tube prefabrication area 21, and the connecting parts between the connected corridor trolleys are opposite to each other, ensuring that the four-section corridor trolleys can be spliced ​​into the middle corridor template trolley 5.

[0130] In some embodiments, the front transverse construction channel is divided into two sections, one section is located at the front side of the first immersed tube prefabrication area 21, and its longitudinal width is B1, and the other end is located at the front side of the second immersed tube prefabrication area 22, and its longitudinal width is B3, B3 < B1, so that the first immersed tube prefabrication area 21 and the second immersed tube prefabrication area 22 are staggered in the transverse direction, that is, the longitudinal width of the end of the first transverse passage 64 located at the front side of the first immersed tube prefabrication area 21 is relatively large, and the second outer trolley part is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area When the first end 33 of the second outer trolley part 3B has not completely left the front side of the prefabricated pipe section in the first immersed tube prefabrication area 21, and it is necessary to horizontally rotate the second outer trolley part to an inclined state, even if the width is slightly increased, it can provide more operating space for rotation, thereby avoiding the two sides of the first end 33 of the second outer trolley part 3B contacting the dock wall 11 or the pipe section during the rotation process, increasing the rotatable angle of the second outer trolley part 3B in this step, reducing its lateral width occupancy, and allowing it to be more smoothly transported backwards to the rear side of the first outer trolley part 3A.

[0131] In some embodiments, the corners of the dry dock are chamfered, and before the first outer trolley portion is rotated horizontally 90 degrees to the longitudinal direction, the first outer trolley portion in the transverse direction is first translated backward to the front end of the second immersed tube prefabrication area.

[0132] like Figure 4As shown, when the first outer trolley part 3A is horizontally translated to the front side of the second immersed tube prefabrication area 22 to the maximum extent, most of the second end 34 of the first outer trolley part 3A is aligned with the second longitudinal aisle 62. Since the interior of the dry dock 1 has a chamfer, the area of ​​the space where the second end 34 of the first outer trolley part 3A is located is reduced. If the first outer trolley part 3A is subsequently directly rotated to the longitudinal direction with the second end 34 of the first outer trolley part 3A as the axis, the rotated second end 34 is likely to collide with the chamfer. Therefore, the first outer trolley part 3A is first horizontally translated backward and then rotated to keep the second end 34 of the first outer trolley part 3A away from the chamfer of the dock wall 11, so as to avoid the second end 34 from colliding with the dock wall 11 during rotation, thereby providing a larger movable space for the first outer trolley part 3A.

[0133] In some embodiments, when the first outer trolley part 3B is rotated horizontally to the longitudinal direction, the rotation center is located on one side of the middle of the first outer trolley part 3A close to the first immersed tube prefabrication area 21, so that before the first outer trolley part 3A is rotated horizontally to the longitudinal direction, it is first moved longitudinally backward to the rear end of the second immersed tube prefabrication area 22, and then rotated horizontally 90 degrees, so that the second end 34 of the first outer trolley part 3A is chamfered away from the dock wall 11 to reduce the risk of collision. At the same time, the rotation center is closer to the center of the first outer trolley part 3A, making the control of the rotation operation easier. Further, when the first outer trolley part 3A is rotated 90 degrees at the front of the dry dock, the rotation center is selected to be on one side of the middle of the rear edge of the first outer trolley part 3A close to the first end, so that after the first outer trolley part 3A is rotated to the longitudinal direction, its first end is staggered with the chamfer of the dock wall 11 in the horizontal direction, so that it can be directly translated into the second longitudinal aisle 62 in the subsequent steps.

[0134] When the second outer trolley part 3B is horizontally rotated to an inclined state, the rotation center is located at one end of the second outer trolley part 3B close to the first immersed tube prefabrication area 21, reducing the longitudinal movement amplitude caused by the rotation of the first end 33 and preventing it from colliding forward with the dock wall 11.

[0135] In some embodiments, there are two inner mold trolleys 4 , and the two inner mold trolleys 4 are transported one by one from the first immersed tube prefabrication area 21 to the second immersed tube prefabrication area 22 in sequence according to the above-mentioned method for transporting the inner mold trolleys 4 .

[0136] In some embodiments, the middle corridor formwork trolley 5 includes a walking beam 51 and a formwork support frame 52 that can move on the walking beam 51. The walking beam 51 and the formwork support frame 52 can alternately support the ground to facilitate longitudinal movement in the immersed tube prefabrication area. The longitudinal length of the formwork support frame 52 is substantially the same as that of the outer formwork trolley 3. When the middle corridor formwork trolley 5 is disassembled, the walking beam 51 is split into four sections, and the formwork support frame 52 is split into two sections, and both are located on the sections corresponding to the walking beam 51, so that the two parts of the formwork support frame 52 are synchronously transported along with the corresponding parts of the walking beam 51, and there is no need to remove the formwork support frame 52 from the walking beam 51 and transport the formwork support frame 52 and the walking beam 51 separately, which reduces the amount of work required for disassembly and assembly of the middle corridor formwork trolley 5 during the transportation process and shortens the transportation construction period.

[0137] In some embodiments, the construction site further has a third immersed tube prefabrication area 23 arranged transversely, and the third immersed tube prefabrication area 23 extends from the rear side of the first immersed tube prefabrication area 21 to the rear side of the second immersed tube prefabrication area 22, so that the first immersed tube prefabrication area 21, the second immersed tube prefabrication area 22 and the third immersed tube prefabrication area 23 are arranged in a herringbone shape, and a transverse construction channel, i.e., a third transverse passage 66, is further formed at the rear side of the third immersed tube prefabrication area 23. The second transverse passage 65 and the third transverse passage 66 are respectively located on both sides of the third immersed tube prefabrication area 23, for another set of outer mold trolleys 3 of the third immersed tube prefabrication area 23 to travel.

[0138] In order to ensure the progress of the immersed tube tunnel project, the pipe segments of the corresponding immersed tubes in the third immersed tube prefabrication area 23 are prefabricated at the same time as the immersed tube segments in the first immersed tube prefabrication area 21, which increases the number of immersed tubes prefabricated during the construction period and meets the demand for longer immersed tube tunnels. However, the third immersed tube prefabrication area 23 cannot be used to transport the outer mold trolley 3 and the inner mold trolley 4 from the first immersed tube prefabrication area 21 to the second immersed tube prefabrication area 22, and the pipe segments prefabricated in the third immersed tube prefabrication area 23 or another corresponding set of prefabricated molds block the rear ends of the first and second immersed tube prefabrication areas, and the distance between the two is still narrow. The outer mold trolley 3 and the inner mold trolley 4 cannot directly remove the prefabricated pipe segments from the end of the first and second immersed tube prefabrication areas facing the third immersed tube prefabrication area 23 for transport, and still need to be split into two modules for transport separately.

[0139] In some embodiments, the longitudinal width of the transverse construction channel is less than Y, where Y is the longitudinal width of the outer mold trolley. The transverse width of the longitudinal construction channel is greater than X and less than 1.5X, where X is the transverse width of the outer support frame, and Z is the longitudinal length of the outer support frame, and Z is greater than X.

[0140] The transverse width of the longitudinal construction channel is less than 1.5X, Z is greater than X, the first outer trolley part 3A occupies the second longitudinal aisle 62, the first outer trolley part 3A has turned longitudinally and translated into the second longitudinal aisle 62, the second outer trolley part 3B translates to the front side of the second immersed tube prefabrication area 22 through the first transverse aisle 64, and its second end 34 is adjacent to the first outer trolley part 3A, less than half of the outer support frame 31 of the second end 34 of the second outer trolley part 3B is aligned with the second longitudinal aisle 62, A portion of the outer support frame 31 of the first end 33 of the second outer trolley part 3B is still in front of the prefabricated pipe section in the first immersed tube prefabrication area 21. Therefore, when the second outer trolley part is rotated horizontally to an inclined state, the second outer trolley part 3B is rotated and moved linearly to reduce the lateral space occupied by the second outer trolley part 3B, so that the outer support frame 31 at the second end 34 can completely break away from the front of the prefabricated pipe section in the first immersed tube prefabrication area 21 and enter the third longitudinal aisle 63, so that it can move backward.

[0141] In the longitudinal direction, the distances B1 and B2 between the front and rear ends of the first immersed tube prefabrication area 21 and the adjacent dock wall 11, as well as the distances B3 and B4 between the front and rear ends of the second immersed tube prefabrication area 22 and the adjacent dock wall 11 are all smaller than Y, where Y is the longitudinal length of the outer mold trolley 3. The longitudinal length of the outer mold trolley 3 is large, and even if it moves longitudinally until it is attached to the dock wall 11, it cannot escape from the prefabricated pipe section.

[0142] 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.

[0143] 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 method for disassembling and assembling a prefabricated template for a large immersed tube in a limited space, characterized in that: The dry dock has a dock wall, and the construction site enclosed by the dock wall has a first immersed tube prefabrication area and a second immersed tube prefabrication area arranged side by side in a transverse manner, so that two transverse construction channels and three longitudinal construction channels are formed around the first immersed tube prefabrication area and the second immersed tube prefabrication area. The prefabricated formwork includes an outer formwork trolley located in the first immersed tube prefabrication area. The specific steps of the transfer method are as follows: The outer mold trolley is evenly divided into two outer trolley parts, so that the transverse construction channel and the longitudinal construction channel can each accommodate an outer trolley part, and the two outer trolley parts are respectively the first outer trolley part and the second outer trolley part, one in front and one in the back; The first outer trolley is longitudinally moved forward out of the first immersed tube prefabrication area, and is transversely moved along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and the first outer trolley is horizontally rotated to the longitudinal direction, and is located in the longitudinal construction channel away from the first immersed tube prefabrication area; The second outer trolley is longitudinally moved forward out of the first immersed tube prefabrication area, and is transversely moved along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and the second outer trolley is horizontally rotated to an inclined state so that one end of the second outer trolley is located above the second immersed tube prefabrication area and the other end is longitudinally aligned with the longitudinal construction channel in the middle, and the second outer trolley is longitudinally moved backward to the rear side of the first outer trolley; Rotate the first outer trolley part and the second outer trolley part horizontally to the horizontal direction, and assemble the two into an outer mold trolley; The prefabricated template further includes an inner mold trolley located in the first immersed tube prefabrication area, the front end of the first immersed tube prefabrication area faces the dock door of the dry dock, and the transfer method further includes the following steps: The inner mold trolley is evenly divided into two outer trolley parts, so that the docking area and the transverse construction channel behind the dock door can each accommodate an inner trolley part, and the two inner trolley parts are respectively the first inner trolley part and the second inner trolley part, one in front and one in the back; The first inner trolley part is longitudinally translated forward to the dock area, the second inner trolley part is longitudinally translated forward out of the first immersed tube prefabrication area, and is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area, and the second inner trolley part is longitudinally translated backward to the second immersed tube prefabrication area; The first inner trolley part is longitudinally moved backward out of the docking area, and is laterally translated along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and the first inner trolley part is longitudinally translated backward into the second immersed tube prefabrication area, and is combined with the second inner trolley part at the rear side to form an inner mold trolley; Among them, the front end of the horizontal construction channel is divided into two sections, one end is located in front of the first immersed tube prefabrication area, and its longitudinal width is B1, and the other end is located in front of the second immersed tube prefabrication area, and its longitudinal width is B3, B3<B1.

2. According to the limited space large immersed tube full section prefabricated template disassembly and transfer method of claim 1, it is characterized by: The prefabricated template further comprises a middle gallery template trolley located in the first immersed tube prefabrication area, the front end of the first immersed tube prefabrication area faces the dock door of the dry dock, and the transfer method further comprises the following steps; The middle corridor template trolley is evenly divided into four corridor trolley parts along the longitudinal direction, so that the longitudinal length of the corridor trolley part is smaller than the longitudinal width of the transverse construction channel. The four corridor trolley parts are the first corridor trolley part, the second corridor trolley part, the third corridor trolley part and the fourth corridor trolley part from front to back; The first corridor trolley unit, the second corridor trolley unit, and the third corridor trolley unit are integrally moved forward to the front side of the first immersed tube prefabrication area, so that the first corridor trolley unit and the second corridor trolley unit enter the docking area; The third corridor trolley is laterally translated to the side away from the second immersed tube prefabrication area, the fourth corridor trolley is longitudinally moved forward out of the first immersed tube prefabrication area, and is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area, and the fourth corridor trolley is longitudinally translated backward to the second immersed tube prefabrication area; The third corridor trolley is laterally translated along the front transverse construction channel to the front side of the second immersed tube prefabrication area, and then longitudinally translated backward to the front side of the fourth corridor trolley; Move the second corridor trolley unit and the first corridor trolley unit longitudinally backward out of the docking area in sequence, and translate them transversely along the transverse construction channel at the front end to the front side of the second immersed tube prefabrication area, and then translate them longitudinally backward into the second immersed tube prefabrication area, so that the second corridor trolley unit is located in front of the third corridor trolley unit, and the second corridor trolley unit is located in front of the first corridor trolley unit; The first corridor trolley section, the second corridor trolley section, the third corridor trolley section and the fourth corridor trolley section are assembled into a middle corridor template trolley.

3. According to claim 1, the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space is characterized in that: The corners of the dry dock are chamfered, and before the first outer trolley part is horizontally rotated to the longitudinal direction, the first outer trolley part in the transverse direction is first translated backward to the front end of the second immersed tube prefabrication area.

4. According to claim 3, the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space is characterized in that: When the first outer trolley part is rotated horizontally to the longitudinal direction, the rotation center is located on one side of the middle part of the first outer trolley part close to the first immersed tube prefabrication area; when the second outer trolley part is rotated horizontally to an inclined state, the rotation center is located on one end of the second outer trolley part close to the first immersed tube prefabrication area.

5. According to claim 1, the method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space is characterized in that: There are two inner mold trolleys, which are transported from the first immersed tube prefabrication area to the second immersed tube prefabrication area in sequence.

6. The method for disassembling and transferring the full-section prefabricated template of a large immersed tube in a limited space according to claim 2 is characterized in that: The middle corridor formwork trolley includes a walking beam and a formwork support frame that can move on the walking beam. When the middle corridor formwork trolley is disassembled, the walking beam is divided into four sections, and the formwork support frame is divided into two sections, and both are located on the sections corresponding to the walking beam.

7. The method for disassembling and transferring a full-section prefabricated template for a large immersed tube in a limited space according to any one of claims 1 to 6, characterized in that: The construction site further has a third immersed tube prefabrication area arranged laterally, and the third immersed tube prefabrication area extends from the rear side of the first immersed tube prefabrication area to the rear side of the second immersed tube prefabrication area, so that the first immersed tube prefabrication area, the second immersed tube prefabrication area and the third immersed tube prefabrication area are arranged in a herringbone shape, and a horizontal construction channel is further formed on the rear side of the third immersed tube prefabrication area.

8. The method for disassembling and transferring a full-section prefabricated template for a large immersed tube in a limited space according to any one of claims 1 to 6, characterized in that: The longitudinal width of the transverse construction channel is less than Y, where Y is the longitudinal width of the outer mold trolley; The transverse width of the longitudinal construction channel is greater than X and less than 1.5X, X is the transverse width of the inner and outer support frames of the outer mold trolley, Z is the longitudinal length of the inner and outer support frames of the outer mold trolley, and Z is greater than X.

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