A large-span arch structure construction method combining jacking and lifting

Abstract

The present invention discloses a method for constructing a large-span arch structure by combining jacking and lifting, comprising the following steps: S1: assembling a portion of the arch structure on the ground; S2: jacking the assembled portion of the arch structure; S3: after jacking into place, assembling it into a whole with the remaining arch structure; S4: lifting the assembled whole arch structure; S5: installing the structure after lifting into place. Using a jacking frame as a lifting support frame can effectively save the use of standard sections. After jacking into place, assembling it into a whole can greatly reduce the amount of high-altitude work, effectively solve the safety problem of high-altitude work during installation, and save the use of jacks. At the same time, compared with the secondary lifting method, this method does not require the removal of the lifting section. The arch structure can be directly lifted into place using a lifting device, thereby reducing the tooling materials and lifting sections used for lifting, and saving the time of removing the lifting section after the second lifting, thereby improving construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of construction of steel structures with large height differences, and more specifically, to a construction method of a large-span arched structure combining jacking and lifting. Background Art

[0002] During the construction of a large-span arch structure, due to the characteristics of the arch structure, the middle part has a large rise. If a single lift is used, the height of the middle part is large, and the required support section height is high. If a secondary lift is used, the frame of the first lift needs to be removed before the second lift, otherwise it will affect the second lift, which increases the workload and the construction period. If the method of jacking the support frame is used, the support frame in the middle of the arch is higher, the amount of high-altitude work is large, and the demand for support frames is large, and the jacking method is usually suitable for structures with a rise of no more than 60m. Therefore, how to make the two methods play their respective advantages to reduce the amount of high-altitude work and save support structures is the technical problem to be solved by the present invention. Therefore, it is necessary to propose a large-span arch structure construction method that combines jacking and lifting to at least partially solve the problems existing in the prior art. Summary of the Invention

[0003] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to define the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, the present invention provides a method for constructing a large-span arch structure by combining jacking and lifting, comprising the following steps:

[0005] S1: Ground-mounted partial arch structure;

[0006] S2: The assembled arch structure is lifted;

[0007] S3: After being lifted into place, it is assembled into a whole with the remaining arch structure;

[0008] S4: The assembled overall arch structure is lifted;

[0009] S5: After lifting into place, proceed with structural installation.

[0010] Preferably, the lifting height in step S2 does not exceed 20 m.

[0011] Preferably, in step S4, the lifted jacking frame does not need to be dismantled and can be directly used as a lifting support frame.

[0012] Preferably, the jacking frame is provided with a guy rope or a rigid support device.

[0013] Preferably, a lateral stabilization device is provided on the arch structure, and the lateral stabilization device includes a bottom stabilization device and a flexible stabilization device; the flexible stabilization device is provided on the arch structure and is movably connected to the lifting frame, and the bottom stabilization device is provided on the top surface of the lifting frame and is movably connected to the arch structure.

[0014] Preferably, the bottom stabilization device includes a mounting plate, a fixing part and a slider assembly; the mounting plate is arranged on the top surface of the lifting frame and is located at the edge of the lifting frame, the fixing part is arranged on the outer wall of the mounting plate, the top surface of the mounting plate is provided with a slide groove, the bottom surface of the slider assembly is movably connected to the slide groove, and the side wall of the slider assembly is connected to the fixing part through an elastic part.

[0015] The top surface of the upper slider is provided with a plurality of upper sliders, and the lower slider is provided with a plurality of lower sliders. The upper slider is provided with a plurality of lower sliders, and the lower slider is provided with a plurality of lower sliders.

[0016] Preferably, the flexible stabilization device includes two groups of upper modules, two groups of lower modules and at least one group of sliding modules; the two groups of upper modules are arranged on the arch structure, the lower module is located below the arch structure, the upper module is connected to the lower module through a cable, and the two groups of lower modules are movably connected to the two ends of the sliding module through traction ropes respectively, and the side wall of the jacking frame is provided with a pressure block, and the bottom surface of the pressure block abuts against the top surface of the sliding module.

[0017] Preferably, the upper mold group includes a tensioning plate and a clamp; limiting grooves are symmetrically provided at both ends of the tensioning plate, and the limiting grooves pass through the top and bottom surfaces of the tensioning plate, and a limiting steel bar is provided on the top surface of the tensioning plate, and the limiting steel bar is located above the limiting groove, and the limiting steel bar is composed of two I-beams, and a protective shaft is axially connected between the two I-beams, and the protective shaft is sleeved on the cable, and the cable is connected to the tensioning plate through the protective shaft, and the cable passes through the limiting groove and is connected to the lower mold group, and an adjustment groove is provided on the tensioning plate, and the adjustment groove is located between the two relative limiting grooves, and the top of the clamp is provided in the adjustment groove, and the clamp is connected to the arch structure.

[0018] Preferably, the lower module and the sliding module are both I-beams, the cable passes through the lower module and is connected to the bottom of the lower module, the two ends of the sliding module are respectively connected to the two lower modules through the traction rope, the top of the traction rope is connected to the top of the lower module, the sliding module is movably connected to the traction rope, and the length of the traction rope is greater than the arrow height of the arch structure.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] Jacking is a construction method that uses jacks and alternating shim blocks to gradually raise a roof structure assembled or cast in situ to the designed elevation. Lifting is a construction method that uses jacks to lift the structure vertically to a designated location via steel strands. This method is commonly used in the construction of large-span steel structures. This application combines the jacking and lifting methods.

[0021] First, part of the arch structure is assembled on the ground, and then the assembled arch structure is lifted upward by jacking. To comply with safety regulations, the jacking height cannot exceed 20m. Therefore, this method can be effectively applied to the construction of large-span structures above 20m. After jacking to the designated position, the remaining arch structure is assembled again to form an overall arch structure, and then the entire structure is lifted. At this time, there is no need to remove the jacking frame. The jacking frame can be used directly as a lifting support frame during lifting. After the overall arch structure is lifted into place, it is structurally installed with the truss shoulder to complete the construction of the arch structure.

[0022] Through the design of the above structure, this method combines jacking and lifting to address the problem of large sagittal height in the middle part of the arch structure, fully utilizing their respective characteristics, and performing jacking at the low part. Compared with the method of lifting once, the middle part can reduce the installation height, greatly improving safety. At the same time, it saves assembly brackets compared to lifting into place once, and uses the jacking frame as a lifting support frame, which can effectively save the use of standard sections. After jacking into place, it is assembled into a whole, which can greatly reduce the amount of high-altitude work, effectively solve the safety problem of high-altitude work during installation, and save the use of jacks. At the same time, compared with the secondary lifting method, this method does not need to remove the lifting section, and can directly use the lifting device to lift the arch structure into place, thereby reducing the tooling materials and lifting sections used for lifting, and saves the time of removing the lifting section after the second lifting, thereby improving construction efficiency.

[0023] The other advantages, objectives and features of the large-span arch structure construction method combining jacking and lifting described in the present invention will be reflected in part through the following description, and will also be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 To assemble part of the arch structure on the ground.

[0026] Figure 2 After the assembly is completed, the jacking operation is carried out.

[0027] Figure 3 It is assembled into a whole after being lifted into place.

[0028] Figure 4 To improve the overall quality after assembly is completed.

[0029] Figure 5 After lifting into place, the structure is installed.

[0030] Figure 6 This is a schematic diagram of the structure of the bottom stabilization device (before swinging).

[0031] Figure 7 Schematic diagram of the structure of the bottom stabilization device (after swinging).

[0032] Figure 8 This is a schematic diagram of the structure of the flexible stabilization device on the arch structure.

[0033] Figure 9 for Figure 8 main view.

[0034] Figure 10 This is a structural diagram of the head shape stabilization device.

[0035] Figure 11 It is a structural diagram of the upper mold assembly (protective shaft is not shown).

[0036] Figure 12 This is a schematic diagram of the protective shaft in the upper mold assembly.

[0037] In the figure: 1 arch structure, 2 truss shoulder, 3 lifting frame, 31 pressure block, 4 lifting bracket, 5 bottom stabilizing device, 51 mounting plate, 52 fixing part, 53 elastic part, 54 lower slider, 55 upper slider, 56 abutting wheel, 57 limiting rod, 6 flexible stabilizing device, 61 upper module, 611 tie plate, 612 clamp, 613 limiting groove, 614 limiting steel bar, 615 protective shaft, 62 lower module, 63 sliding module, 64 cable, 65 traction rope. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0039] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0040] like Figures 1-12 As shown, the present invention provides a method for constructing a large-span arch structure by combining jacking and lifting, comprising the following steps:

[0041] S1: Ground assembly of partial arch structure 1;

[0042] S2: The assembled arch structure 1 is lifted. It should be noted that the lifting height does not exceed 20m.

[0043] S3: After being lifted into place, it is assembled into a whole with the remaining arch structure 1;

[0044] S4: The assembled integral arch structure 1 is lifted, and the lifted jacking frame 3 does not need to be dismantled and can be directly used as a lifting support frame;

[0045] S5: After lifting into place, proceed with structural installation.

[0046] The working principle and beneficial effects of the above technical solution: Jacking refers to a construction method that uses jacks and alternating filling columns to gradually lift a roof structure assembled or cast on the ground to the designed elevation. Lifting refers to a construction method that uses jacks to lift the structure vertically to a designated position via steel strands. This method is generally used in the construction of large-span steel structures. In this application, the jacking method and the lifting method are combined.

[0047] First, part of the arch structure 1 is assembled on the ground, and then the assembled arch structure 1 is lifted upward by jacking. To comply with safety regulations, the jacking height cannot exceed 20m. Therefore, this method can be effectively applied to the construction of large-span structures above 20m. After jacking to the designated position, the remaining arch structures 1 are assembled again to form an overall arch structure 1, and then the entire structure is lifted. At this time, there is no need to remove the jacking frame 3. The jacking frame 3 can be used directly as a lifting support frame during lifting. After the overall arch structure 1 is lifted into place, it is structurally installed with the truss shoulder 2 to complete the construction of the arch structure 1.

[0048] Through the design of the above structure, this method addresses the problem of large sagittal height in the middle part of the arch structure 1, combines jacking and lifting, fully utilizes their respective characteristics, and performs jacking at a low position. Compared with the method of lifting once, the middle part can reduce the installation height, greatly improving safety. At the same time, it saves assembly brackets compared to lifting into place once, and uses the jacking frame 3 as a lifting support frame, which can effectively save the use of standard sections. After jacking into place, it is assembled into a whole, which can greatly reduce the amount of high-altitude work, effectively solve the safety problem of high-altitude work during installation, and save the use of jacks. At the same time, compared with the secondary lifting method, this method does not need to remove the lifting section, and the arch structure 1 can be directly lifted into place using the lifting device, thereby reducing the tooling materials and lifting sections used for lifting, and saving the time of removing the lifting section after the second lifting, thereby improving construction efficiency.

[0049] In one embodiment, a lateral stabilization device is provided on the arch structure 1, and the lateral stabilization device includes a bottom stabilization device 5 and a flexible stabilization device 6; the flexible stabilization device 6 is provided on the arch structure 1 and is movably connected to the lifting frame 3, and the bottom stabilization device 5 is provided on the top surface of the lifting frame 3 and is movably connected to the arch structure 1.

[0050] The working principle and beneficial effects of the above technical solution: After solving the problem of jacking and lifting of the arch structure 1, it is also necessary to consider the problem of lateral stability of the arch structure 1, because the arch structure 1 needs to first perform partial structure splicing on the ground, and then jack it up to a specified height for splicing. As the span of the arch structure 1 increases after splicing on the ground, a bottom stabilizing device 5 needs to be set on the top of the jacking frame 3 during the jacking process to maintain the lateral stability of the arch structure 1 during the jacking process. The jacking frame 3 can maintain lateral stability through guy ropes, etc. As the arch structure 1 is assembled into a whole, the lateral stability of the arch structure 1 can be maintained by the flexible stabilizing device 6 during the lifting process.

[0051] In one embodiment, the bottom stabilization device 5 includes a mounting plate 51, a fixing part 52 and a slider assembly; the mounting plate 51 is arranged on the top surface of the lifting frame 3 and is located at the edge of the lifting frame 3, the fixing part 52 is arranged on the outer wall of the mounting plate 51, and the top surface of the mounting plate 51 is provided with a slide groove, the bottom surface of the slider assembly is movably connected to the slide groove, and the side wall of the slider assembly is connected to the fixing part 52 through an elastic part 53. The slider assembly includes a lower slider 54 and an upper slider 55, the top surface of the lower slider 54 is an inclined surface, and the outer side height of the lower slider 54 is greater than the inner side height, the bottom surface of the upper slider 55 is also an inclined surface, and is adapted to the top surface of the lower slider 54, the outer side height of the upper slider 55 is less than the inner side height, the bottom surface of the upper slider 55 is slidably connected to the top surface of the lower slider 54, and the top surface of the lower slider 54 is provided with an abutment wheel 56, which abuts against the side wall of the arch structure 1. The bottom surface of the lower slider 54 is provided with a protrusion and is movably connected to the sliding groove on the top surface of the mounting plate 51 through the protrusion. The outer side wall of the lower slider 54 is provided with a limiting rod 57, the elastic member 53 is sleeved on the outside of the limiting rod 57, and the limiting rod 57 is movably connected to the fixing member 52, and the lower slider 54 is connected to the fixing member 52 through the elastic member 53.

[0052] The working principle and beneficial effects of the above technical solution: two bottom stabilizing devices 5 are symmetrically arranged on the top of each lifting frame 3, and the abutment wheel 56 abuts against the side wall of the arch structure 1, and a lifting height is reserved between the top surface of the upper slider 55 and the bottom surface of the arch structure 1.

[0053] During the jacking process, once the arch structure 1 deviates to the left (for example, Figure 6As shown in FIG1 , the arch structure 1 moves the upper slider 55 to the left via the contact wheel 56. The upper slider 55 pushes the lower slider 54 to the left via the inclined surface at the bottom. At the same time, the two move relative to each other. The bottom surface of the lower slider 54 slides along the slide groove toward the left side of the mounting plate 51 via the protrusion. A limited position slide rail or other device is also provided between the upper slider 55 and the lower slider 54. As the lower slider 54 moves, the elastic member 53 between it and the fixing member 52 is squeezed, so that the elastic member 53 can provide elastic force to restore the lower slider 54. As the upper slider 55 moves to the left, it slides from the right side of the lower slider 54 along the inclined surface to the left side. During this process, as the upper slider 55 moves along the inclined surface, its height also rises until the top surface of the upper slider 55 abuts the bottom surface of the arch structure 1. At this time, the upper slider 55 is locked with the bottom surface of the arch structure 1, thereby preventing the arch structure 1 from swinging sideways.

[0054] A lifting height is reserved between the upper slider 55 and the arch structure 1 so that the bottom stabilizing device 5 has a certain fault tolerance space to adapt to the small side swing of the arch structure 1 during the jacking process. When the arch structure 1 swings sideways significantly, the upper slider 55 can squeeze the bottom of the arch structure 1 and get stuck with the relative movement of the upper and lower sliders, thereby preventing the arch structure 1 from swinging sideways. In this way, the lateral stability of the arch structure 1 is maintained during the jacking process. The elastic member 53 can keep the abutment wheel 56 in contact with the side wall of the arch structure 1 at all times when the arch structure 1 is lifted and moved upward by the jack, thereby ensuring that the bottom stabilizing device 5 can promptly detect and prevent the arch structure 1 from swinging sideways during the jacking process.

[0055] In one embodiment, the flexible stabilization device 6 includes two groups of upper modules 61, two groups of lower modules 62 and at least one group of sliding modules 63; the two groups of upper modules 61 are arranged on the arch structure 1, and the lower module 62 is located below the arch structure 1. The upper module 61 is connected to the lower module 62 through a cable 64, and the two groups of lower modules 62 are movably connected to the two ends of the sliding module 63 through a traction rope 65 respectively. The side wall of the jacking frame 3 is provided with a pressure block 31, and the bottom surface of the pressure block 31 abuts against the top surface of the sliding module 63. The upper mold group 61 includes a tensioning plate 611 and a clamp 612; limiting grooves 613 are symmetrically provided at both ends of the tensioning plate 611, and the limiting grooves 613 pass through the top and bottom surfaces of the tensioning plate 611; a limiting steel bar 614 is provided on the top surface of the tensioning plate 611, and the limiting steel bar 614 is located above the limiting groove 613, and the limiting steel bar 614 is composed of two I-beams, and a protective shaft 615 is axially connected between the two I-beams, and the protective shaft 615 is sleeved on the cable 64, and the cable 64 is connected to the tensioning plate 611 through the protective shaft 615, and the cable 64 passes through the limiting groove 613 and is connected to the lower mold group 62; an adjustment groove is provided on the tensioning plate 611, and the adjustment groove is located between the two relative limiting grooves 613; the top of the clamp 612 is provided in the adjustment groove, and the clamp 612 is connected to the arch structure 1. The lower module 62 and the sliding module 63 are both I-beams, the cable 64 passes through the lower module 62 and is connected to the bottom of the lower module 62, the two ends of the sliding module 63 are respectively connected to the two lower modules 62 through the traction rope 65, the top of the traction rope 65 is connected to the top of the lower module 62, the sliding module 63 is movably connected to the traction rope 65, and the length of the traction rope 65 is greater than the sagittal height of the arch structure 1.

[0056] The working principle and beneficial effects of the above technical solution: When lifting, the rising speed of the arch structure 1 will be greater than the jacking speed, so a flexible stabilizing device 6 needs to be provided to adapt to the lateral swing of the arch structure 1 during the lifting process.

[0057] First, install the clamp 612 on the truss of the arch structure 1. According to the complexity of the arch structure 1, multiple clamps 612 can be set. For example, the swing amplitude of a single-frame whole is larger than that of a multi-frame whole, and it is more unstable laterally. Therefore, two clamps 612 can be set on the truss of the single-frame arch structure 1. Taking two clamps 612 as an example, the two clamps 612 are respectively set in parallel on the truss of the arch structure 1, and then the tensioning plate 611 is placed above the clamp 612, so that the top of the clamp 612 is inserted into the adjustment groove and fixed to the tensioning plate 611, and then the cable 64 is passed from the top of the upper mold group 61 downward through the protective shaft 615, the limiting groove and the lower mold group 62 in sequence, and then clamped with the bottom surface of the lower mold group 62 through a clamp or a connecting device, and the two ends of the protective shaft 615 are respectively connected to the two I-beam shafts of the limiting bar 614. The portion of the cable 64 located above the protective shaft 615 is also fixed to the protective shaft 615 via a clamp or a connecting device. The ribbed plate 611 is connected to the lower die set 62 via two symmetrical cables 64. The protective shaft 615 and the limiting groove ensure that no matter what angle the clamp 612 is at on the arch structure 1, the cables 64 can remain vertical, so that the service life of the cables 64 will not be reduced due to contact with the ribbed plate 611. The two sets of upper die sets 61 correspond vertically to the two sets of lower die sets 62, and the two sets of lower die sets 62 are connected to the two ends of the sliding die set 63 via a traction rope 65. The traction rope 65 passes through the lower die set 62 and is connected to the top of the lower die set 62 via a clamp or a connecting device.

[0058] During the lifting process, once the arch structure 1 sways sideways, the vertically downward and stretched cables 64 and traction ropes 65 can flexibly limit the amplitude of the sway, reducing the amplitude of the sway while preventing rotation during the lifting process. As the arch structure 1 rises, the traction rope 65 drives the sliding module 63 upward. At this time, the pressure block 31 set on the side wall of the lifting frame 3 can press the top surface of the sliding module 63, so that the sliding module 63 remains in place. The traction rope 65 then passes through the sliding module 63 and moves upward. The sliding module 63 can be limited by the pressure block 31. The traction rope 65 and the cable 64 can be vertically limited by the sliding module 63, so that the cable 64 and traction rope 65 will not rotate, thereby playing a role in stabilizing the arch structure 1 laterally.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 limiting the present invention.

[0060] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for constructing a large-span arched structure by combining jacking and lifting, characterized in that: The steps are as follows: S1: Ground-mounted arched structure (1); S2: The assembled arch structure (1) is lifted; S3: After being lifted into place, it is assembled into a whole with the remaining arch structure (1); S4: The assembled overall arch structure (1) is lifted, and the lifted jacking frame (3) does not need to be dismantled and can be directly used as a lifting support frame; S5: After lifting into place, carry out structural installation; A lateral stabilization device is provided on the arch structure (1), and the lateral stabilization device includes a bottom stabilization device (5). The bottom stabilization device (5) is provided on the top surface of the lifting frame (3) and is movably connected to the arch structure (1); The bottom stabilizing device (5) comprises a mounting plate (51), a fixing member (52) and a slider assembly; the mounting plate (51) is arranged on the top surface of the lifting frame (3) and is located at the edge of the lifting frame (3); the fixing member (52) is arranged on the outer wall of the mounting plate (51); a slide groove is provided on the top surface of the mounting plate (51); the bottom surface of the slider assembly is movably connected to the slide groove; and the side wall of the slider assembly is connected to the fixing member (52) via an elastic member (53); The slider assembly includes a lower slider (54) and an upper slider (55), the top surface of the lower slider (54) is an inclined surface, and the height of the outer side of the lower slider (54) is greater than the height of the inner side, the bottom surface of the upper slider (55) is also an inclined surface, and is adapted to the top surface of the lower slider (54), the height of the outer side of the upper slider (55) is less than the height of the inner side, the bottom surface of the upper slider (55) and the top surface of the lower slider (54) are slidably connected, and the top surface of the lower slider (54) is provided with an abutment wheel (56), The abutting wheel (56) abuts against the side wall of the arch structure (1), the bottom surface of the lower slider (54) is provided with a protrusion, and is movably connected to the sliding groove on the top surface of the mounting plate (51) through the protrusion, and the outer wall of the lower slider (54) is provided with a limiting rod (57), the elastic member (53) is sleeved on the outside of the limiting rod (57), and the limiting rod (57) is movably connected to the fixing member (52), and the lower slider (54) is connected to the fixing member (52) through the elastic member (53).

2. The method for constructing a large-span arched structure by combining jacking and lifting according to claim 1, characterized in that: The lifting height in step S2 does not exceed 20m.

3. The method for constructing a large-span arched structure by combining jacking and lifting according to claim 1, characterized in that: The jacking frame (3) is provided with a guy rope or a rigid support device.

4. The method for constructing a large-span arched structure by combining jacking and lifting according to claim 1, characterized in that: The lateral stabilization device further comprises a flexible stabilization device (6); the flexible stabilization device (6) is arranged on the arch structure (1) and is movably connected to the jacking frame (3).

5. The method for constructing a large-span arched structure by combining jacking and lifting according to claim 4 is characterized in that: The flexible stabilization device (6) includes two groups of upper mold groups (61), two groups of lower mold groups (62) and at least one group of sliding mold groups (63); the two groups of upper mold groups (61) are arranged on the arch structure (1), and the lower mold group (62) is located below the arch structure (1); the upper mold group (61) is connected to the lower mold group (62) through a cable (64); the two groups of lower mold groups (62) are movably connected to the two ends of the sliding mold group (63) through a traction rope (65), and the side wall of the lifting frame (3) is provided with a pressure block (31), and the bottom surface of the pressure block (31) is in contact with the top surface of the sliding mold group (63).

6. The method for constructing a large-span arched structure by combining jacking and lifting according to claim 5, characterized in that: The upper die set (61) includes a ribbed plate (611) and a hoop (612); the two ends of the ribbed plate (611) are symmetrically provided with limiting grooves (613), and the limiting grooves (613) pass through the top and bottom surfaces of the ribbed plate (611); the top surface of the ribbed plate (611) is provided with a limiting steel bar (614), the limiting steel bar (614) is located above the limiting groove (613), and the limiting steel bar (614) is composed of two I-beams, and a protective shaft (612) is axially connected between the two I-beams. 5), the protective shaft (615) is sleeved on the cable (64), the cable (64) is connected to the tension plate (611) through the protective shaft (615), the cable (64) passes through the limiting groove (613) and is connected to the lower mold assembly (62), an adjustment groove is provided on the tension plate (611), the adjustment groove is located between two relative limiting grooves (613), the top of the hoop (612) is set in the adjustment groove, and the hoop (612) is connected to the arch structure (1).

7. The method for constructing a large-span arched structure by combining jacking and lifting according to claim 5, characterized in that: The lower module (62) and the sliding module (63) are both I-beams, the cable (64) passes through the lower module (62) and is connected to the bottom of the lower module (62), the two ends of the sliding module (63) are respectively connected to the two lower modules (62) through the traction rope (65), the top of the traction rope (65) is connected to the top of the lower module (62), the sliding module (63) is movably connected to the traction rope (65), and the length of the traction rope (65) is greater than the sagittal height of the arch structure (1).

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