Midspan displacement structure for arch bridge construction

Abstract

The utility model discloses a midspan displacement structure for arch bridge construction, which relates to the technical field of arch bridge arch frame construction, and comprises an arch bridge arch frame which is erected between a first bridge shore and a second bridge shore and is used for carrying out template support on arch bridge construction; the mid-span construction platform is arranged on one side of the first bridge shore and one side of the second bridge shore, and the mid-span construction platform extends between the first bridge shore and the second bridge shore and is located in the middle of the arch bridge arch frame. The prefabricated and assembled arch bridge lagging jack drives the whole arch bridge lagging jack and the two side spans of the arch bridge lagging jack to move to the construction position between the first bridge shore and the second bridge shore through the midspan displacement assembly, and the purpose that the die supporting position of the arch bridge lagging jack for arch bridge construction can be automatically adjusted is achieved. The defect that in the prior art, the arch bridge arch frame supporting position cannot be adjusted is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of arch bridge arch frame construction, in particular to a mid-span displacement structure for arch bridge construction. Background Art

[0002] In the initial stage of construction, traditional arch bridges generally need to adopt the full-width Bailey plate support method to erect the arch frame of the arch bridge. On the one hand, the full-width Bailey plate arch frame method will consume a large amount of steel, Bailey plates and other ancillary construction materials and construction personnel costs; on the other hand, the arch frame formed by the full-width Bailey plate arch frame method can only be fixed according to the original design position during installation and use. When an error occurs during installation, the part with the error needs to be dismantled as a whole and reinstalled before it can work normally. Utility Model Content

[0003] The utility model aims to solve the shortcoming in the prior art that the supporting position of the arch frame of the arch bridge cannot be adjusted, and proposes a mid-span displacement structure for arch bridge construction.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A mid-span displacement structure for arch bridge construction, comprising:

[0006] An arch bridge frame, the arch bridge frame is erected between the first bridge bank and the second bridge bank, and the arch bridge frame is used to provide formwork support for arch bridge construction;

[0007] A mid-span construction platform, the mid-span construction platform being arranged on one side of the first bridge bank and the second bridge bank, the mid-span construction platform extending between the first bridge bank and the second bridge bank, and being located in the middle of the arch frame of the arch bridge;

[0008] A mid-span displacement assembly is arranged on a mid-span construction platform. The mid-span displacement assembly is connected to the middle part of the arch frame of the arch bridge. The mid-span displacement assembly is used to displace the arch frame of the arch bridge as a whole to a construction position between the first bridge bank and the second bridge bank.

[0009] In a feasible solution, the mid-span displacement structure further includes:

[0010] Two first slides are respectively arranged on the first bridge bank and the second bridge bank, and the two ends of the arch frame of the arch bridge are respectively slidably connected with the first bridge bank and the second bridge bank through two first slideways.

[0011] In one feasible solution, the mid-span displacement assembly includes:

[0012] A plurality of support rods, wherein the plurality of support rods are symmetrically arranged on both sides of the mid-span construction platform, the plurality of support rods are located between the first bridge bank and the second bridge bank, and the plurality of support rods respectively form a support body on both sides of the mid-span construction platform;

[0013] Two second slides, the two second slides are respectively arranged on both sides of the mid-span construction platform, the two second slides are respectively connected to the plurality of support rods, and the two second slides are both provided with a second slideway, and the setting direction of the second slideway is consistent with the setting direction of the first slideway;

[0014] a plurality of locking blocks, each of which is disposed in the two second slideways, wherein a sliding block is disposed at one end of each locking block, and the locking block is slidably connected to the second slideway via the sliding block;

[0015] A plurality of anchor rods, wherein the plurality of anchor rods are vertically arranged at the other end of the locking block, one end of the anchor rod away from the locking block is inserted into the support frame of the arch bridge arch frame, and the other end of the locking block is connected to the support frame of the arch bridge arch frame through the anchor rod;

[0016] Two pulling assemblies are symmetrically arranged on one end of the two second slides, the pulling assemblies are located away from the first bridge bank and the second bridge bank, and one end of the pulling assembly is connected to the locking block.

[0017] In a feasible solution, the pulling assembly includes:

[0018] An anchor block, the anchor block is provided on the second slide, the anchor block is located at a position of the second slide away from the first bridge bank, and the anchor block is used to provide a moving fulcrum;

[0019] A pulling member, one end of which is connected to the anchor block, and the other end of which is connected to the locking block via a connecting steel rope.

[0020] In a feasible solution, the pulling member is any one of a hand chain hoist, an electric hoist or a hydraulic telescopic structure.

[0021] In a feasible solution, the locking block is inclined on a side away from the second slide, and the locking block abuts against the arched inner wall of the arch bridge arch frame through the inclination, and the anchor rod is connected to the locking block at the inclination of the locking block.

[0022] In a feasible solution, the mid-span displacement assembly further includes:

[0023] Multiple lifting members are respectively arranged on multiple support rods, and the lifting members are located between the support rods and the second slide. The lifting members are used to drive the support slide height of the second slide and the locking block as a whole.

[0024] A feasible solution also includes:

[0025] a first limiting plate, which is arranged at a position where the second slide plate is away from the pulling assembly, and is used to prevent the sliding block from driving the locking block to move out of the second slideway of the second slide plate;

[0026] Two second limit plates, the two second limit plates are symmetrically arranged on both sides of the second slide, and the two second limit plates are located on both sides of the second slide. The second limit plates are used to prevent the sliding block from driving the locking block to move out of the second slide of the second slide from the side of the second slide.

[0027] In a feasible solution, the arch bridge arch frame includes:

[0028] Multiple sets of arch structures are arch-shaped and are arranged parallel to each other between the first bridge bank and the second bridge bank;

[0029] Wherein, transverse connecting rods are provided between the multiple groups of arch structures, and the transverse connecting rods are used to transversely connect the multiple groups of arch structures.

[0030] The beneficial effects of the utility model are:

[0031] The utility model uses a mid-span displacement assembly to move the prefabricated arch frame, including both side spans, to a construction location between the first and second banks. This allows for the automatic adjustment of the arch frame's support position for the arch bridge construction mold, effectively resolving the existing drawback of the arch frame's unadjustable support position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of a mid-span displacement structure for arch bridge construction provided in an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of the overall structure of a mid-span displacement structure for arch bridge construction provided in an embodiment of the present utility model;

[0034] Figure 3 Schematic diagram of a mid-span displacement assembly in a mid-span displacement structure for arch bridge construction provided in an embodiment of the present utility model;

[0035] Figure 4It is a schematic plan view of a mid-span displacement assembly in a mid-span displacement structure for arch bridge construction provided in an embodiment of the present utility model;

[0036] Figure 5 The present invention provides a schematic structural diagram of an arch frame in a mid-span displacement structure for arch bridge construction provided in an embodiment of the present invention.

[0037] The markings in the figure are as follows:

[0038] 1. First bridge shore;

[0039] 2. First skateboard;

[0040] 3. Arch bridge arch frame; 31. First support body; 311. Second support body; 32. Support connecting rod; 33. Support frame; 331. Reinforcement frame; 34. Reinforced flower stand; 35. Wind cable tie point; 36. Horizontal connecting rod;

[0041] 4. Mid-span construction platform; 41. Support rod; 411. Lifting member; 42. Second slide plate; 421. First limit plate; 422. Second limit plate; 43. Locking block; 431. Sliding block; 432. Anchor rod; 44. Anchor block; 441. Pulling member; 442. Connecting steel rope;

[0042] 5. Second bridge bank; 51. Support block. DETAILED DESCRIPTION

[0043] 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 of the present invention. Obviously, the embodiments described 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 efforts are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] Reference Figures 1 to 5In order to solve the shortcoming of the prior art that the support position of the arch frame 3 of the arch bridge cannot be adjusted, the utility model provides a mid-span displacement structure for arch bridge construction in this embodiment. The mid-span displacement structure is arranged between two bridge banks that need to be constructed, that is, the mid-span displacement structure is arranged between the first bridge bank 1 and the second bridge bank 5. The arch frame 3 body is arranged on the mid-span displacement structure, and then the arch frame 3 is moved to the construction position between the first bridge bank 1 and the second bridge bank 5 through the mid-span displacement structure, so that the arch frame 3 can provide formwork support for the arch bridge construction. Specifically, the mid-span displacement structure includes: an arch frame 3, a mid-span construction platform 4 and a mid-span displacement assembly. The arch frame 3 is arch-shaped, and the arch frame 3 is erected between the first bridge bank 1 and the second bridge bank 5. The arch frame 3 is used to provide formwork support for the arch bridge construction. The mid-span construction platform 4 is disposed on one side of the first and second banks 1 and 5, extending between the first and second banks 1 and 5 and located in the middle of the arch frame 3. The mid-span displacement assembly is disposed on the mid-span construction platform 4 and connected to the middle of the arch frame 3. The mid-span displacement assembly is used to drive the arch frame 3 on the mid-span construction platform 4 to displace both side spans of the arch frame 3 to a construction position between the first and second banks 1 and 5. In this embodiment, the prefabricated and assembled arch frame 3 is moved, along with both side spans, to a construction position between the first and second banks 1 and 5 via the mid-span displacement assembly, enabling the arch frame 3 to autonomously adjust its mold support position for arch bridge construction. This effectively addresses the drawback of the prior art, which prevents the arch frame 3 from having an adjustable support position.

[0048] In this embodiment, in order to ensure that the mid-span displacement structure drives the sliding effect of the two side spans of the arch frame 3 along the first bridge bank 1 and the second bridge bank 5, the mid-span displacement structure also includes: two first slides 2, the two first slides 2 are respectively arranged on the first bridge bank 1 and the second bridge bank 5, and the two ends of the arch frame 3 are respectively connected to the first bridge bank 1 and the second bridge bank 5 through two first slides. In addition, in this embodiment, in order to meet the construction requirements of bridge banks of different heights, the first slide 2 can be set as a whole on the support block 51, so that the support block 51 can lift the arch frame 3 as a whole. That is, by setting a support block 51 with a height-increasing function at the bottom of the first slide 2, the arch frame 3 can meet the displacement requirements and arch bridge construction requirements.

[0049] Reference Figure 2 、 Figure 3 and Figure 4In this embodiment, the mid-span displacement assembly is disposed on the mid-span construction platform 4. To facilitate the displacement of the arch frame 3 and subsequent construction, the mid-span construction platform 4 can be configured as a T-shaped structure. The mid-span construction platform 4 is supported by an integral platform bracket and a platform surface, which will not be described in detail herein. The mid-span displacement assembly displaces the arch frame 3 on the mid-span construction platform 4 to a construction position between the first bank 1 and the second bank 5, while simultaneously driving the two side spans of the arch frame 3 to move along the first bank 1 and the second bank 5 to a construction position between the first bank 1 and the second bank 5. Specifically, the mid-span displacement assembly includes: a plurality of support rods 41, two second slides 42, a plurality of locking blocks 43, a plurality of anchor rods 432, and two pulling assemblies. Multiple support rods 41 are symmetrically arranged on both sides of the mid-span construction platform 4. Multiple support rods 41 are located between the first bridge bank 1 and the second bridge bank 5. Multiple support rods 41 form supporting bodies on both sides of the mid-span construction platform 4 to facilitate the subsequent installation of the displacement structure. Two second slides 42 are respectively arranged on both sides of the mid-span construction platform 4. The two second slides 42 are respectively connected to the multiple support rods 41. Both second slides 42 are provided with second slides. The setting direction of the second slides is consistent with the setting direction of the first slides, that is, to drive the arch frame 3 as a whole and the two side spans of the arch frame 3 to the construction position between the first bridge bank 1 and the second bridge bank 5 through the mid-span displacement assembly. Multiple locking blocks 43 are respectively arranged in the two second slides. One end of each locking block 43 is provided with a sliding block 431. The locking block 43 is slidably connected to the second slide via the sliding block 431. A plurality of anchor rods 432 are perpendicularly mounted on the other end of the locking block 43. The ends of the anchor rods 432, away from the locking block 43, are inserted into the support frame 33 of the arch frame 3. The other end of the locking block 43 is connected to the support frame 33 of the arch frame 3 via the anchor rods 432. Two pulling assemblies are symmetrically mounted on one end of each of the two second slides 42. Each pulling assembly is located away from the first bridge bank 1 and the second bridge bank 5. One end of each pulling assembly is connected to the locking block 43, so that the arch frame 3, as a whole, and both side spans of the arch frame 3, can be moved to the construction position between the first bridge bank 1 and the second bridge bank 5 via the mid-span displacement assembly. That is, in this embodiment, by arranging a second slide 42 on both sides of the mid-span construction platform 4, the pulling component drives the locking block 43 in the second slideway of the second slide 42 through the anchor rod 432 to drive the arch frame 3 through the mid-span displacement component to drive the entire arch frame 3 and the two side spans of the arch frame 3 to move to the construction position between the first bridge bank 1 and the second bridge bank 5.

[0050] In this embodiment, the pulling assembly includes an anchor block 44, a pulling member 441, and a connecting steel rope 442. The anchor block 44 is disposed on the second slide 42, located away from the first bridge bank 1. The anchor block 44 is used to provide a fulcrum for movement. One end of the pulling member 441 is connected to the anchor block 44, and the other end of the pulling member 441 is connected to the locking block 43 via a connecting steel rope 442. That is, the pulling member 441 is connected to the locking block 43 via the connecting steel rope 442, and the pulling member 441 pulls the connecting steel rope 442, thereby driving the arch frame 3 as a whole and the two side spans of the arch frame 3 to move to the construction position between the first bridge bank 1 and the second bridge bank 5 through the mid-span displacement assembly. In this embodiment, the pulling member 441 is a hand winch, an electric winch, or a hydraulic telescopic structure.

[0051] In this embodiment, in order to make the locking block 43 and the anchor rod 432 fit the arch of the arch bridge frame 3 more closely, the locking block 43 is inclined on the side away from the second slide, and the locking block 43 is in contact with the inner wall of the arch of the arch bridge frame 3 through the inclination, and the anchor rod 432 is connected to the locking block 43 at the inclined portion of the locking block 43.

[0052] In this embodiment, to facilitate the lifting and removal of the mid-span displacement assembly and the arch frame 3, the mid-span displacement assembly further comprises: a plurality of lifting members 411, each of which is disposed on a plurality of support rods 41. The lifting members 411 are positioned between the support rods 41 and the second slide 42. The lifting members 411 are used to integrally drive the support slide height of the second slide 42 and the locking block 43 to facilitate the subsequent lifting and removal of the mid-span displacement assembly. In this embodiment, the lifting members 411 can be operated electrically, hydraulically, or pneumatically. That is, the lifting members 411 can be any of an electric push rod, a hydraulic push rod, and a pneumatic push rod.

[0053] Reference Figure 3 and Figure 4 In this embodiment, to prevent the sliding block 431 in the mid-span displacement assembly from sliding out of the second slideway, a first limiting plate 421 and two second limiting plates 422 are provided on the second slideway 42. The first limiting plate 421 is provided at a position of the second slideway 42 away from the pulling assembly. The first limiting plate 421 is used to prevent the sliding block 431 from causing the locking block 43 to move out of the second slideway of the second slideway 42. The two second limiting plates 422 are symmetrically provided on either side of the second slideway 42. The two second limiting plates 422 are located on either side of the second slideway. The second limiting plates 422 are used to prevent the sliding block 431 from causing the locking block 43 to move out of the second slideway of the second slideway 42 from the side edges of the second slideway.

[0054] In this embodiment, in order to ensure the displacement effect, butter or other lubricating oil can be applied to the first slide and the second slide, so that the mid-span displacement component can drive the arch bridge arch frame 3 to move more smoothly.

[0055] Reference Figure 5In this embodiment, in order to reduce the assembly time of the arch frame 3 of the arch bridge, the arch frame 3 is a prefabricated integrated structure, that is, the arch frame 3 can be directly produced and processed at a convenient construction location or in a factory. The arch frame 3 includes: multiple groups of arch frame structures, multiple groups of arch frame structures are arched to cooperate with the construction of the arch bridge, and multiple groups of arch frame structures are arranged parallel to each other between the first bridge bank 1 and the second bridge bank 5. In order to strengthen the overall supporting effect of the multiple groups of arch frame structures on the construction of the arch bridge, transverse connecting rods 36 are arranged between the multiple groups of arch frame structures. The transverse connecting rods 36 are used to cross-connect the multiple groups of arch frame structures to connect the multiple groups of arch frame structures as a whole. In order to facilitate the description of the multiple groups of arch frame structures, one arch frame structure is taken as an example. Specifically, one arch frame structure includes: multiple support frames 33, multiple reinforcement flower racks 34, two first support bodies 31 and two support connecting rods 32. The support frame 33 is internally provided with a reinforcement frame 331, which is used to strengthen the overall construction support effect of the support frame 33. Multiple support frames 33 are spliced ​​and connected to each other, forming an arch. In order to increase the wind resistance of the arch structure, at least two wind cable tie points 35 are provided at the points where the multiple support frames 33 are spliced ​​together. The wind cable tie points 35 are used to connect wind-resistant cables. Multiple reinforced flower racks 34 are square frames and are set on the multiple support frames 33. The reinforced flower racks 34 are used to install and strengthen the bending points where the multiple support frames 33 are spliced ​​together to ensure the overall arch stability of the arch structure. The first support body 31 is V-shaped, and two of the first support bodies 31 are respectively arranged on both sides of the arch structure formed by the mutual splicing of multiple support frames 33. The open end of the first support body 31 is connected to the support frame 33, and the two first support bodies 31 are respectively connected to the two mounting plates in the two side span transverse structures away from the open end (preferably, the first support body 31 is detachably connected to the mounting plate through the mounting groove away from the open end, so as to meet different construction requirements). The two support links 32 are symmetrically arranged on both sides of the arch formed by the mutual splicing of multiple support frames 33. The support links 32 are connected to the open ends of the first support body 31. The support links 32 and the first support body 31 form a triangular structure. The support links 32 are used to connect the first support body 31 with the multiple support frames 33. In this embodiment, an arch is formed by splicing a plurality of support frames 33 together, and then the arch is reinforced with a flower rack 34, a reinforcement frame 331, and a wind-resistant cable is connected at the cable tie point 35 to ensure the stability of the multiple groups of arch frame structures erected parallel to each other between the first bridge bank 1 and the second bridge bank 5. Then, the arch frame is connected as a whole through a transverse connecting rod 36 to strengthen the support stability of the multiple groups of arch frame structures as a whole.

[0056] With reference to the drawings and the figures, in this embodiment, in order to ensure the stability of the integral connection between the first support body 31 and the support frame 33, a second support body 311 is provided inside each of the first support bodies 31. The second support body 311 is triangular in shape, and the triangular ends of the second support body 311 are respectively in contact with the first support body 31 and the support link 32. The plurality of second support bodies 311 are arranged parallel to each other inside the plurality of first support bodies 31. In this embodiment, in order to facilitate the recycling and reuse of the arch structure, the second support body 311 is composed of three support rods, and the three support rods are respectively rotatably connected to the first support body 31 and the support link 32, so as to facilitate the separation of the second support body 311 from the first support body 31 and the support link 32.

[0057] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mid-span displacement structure for arch bridge construction, characterized in that: include: An arch bridge frame, the arch bridge frame is erected between the first bridge bank and the second bridge bank, and the arch bridge frame is used to provide formwork support for arch bridge construction; A mid-span construction platform, the mid-span construction platform being arranged on one side of the first bridge bank and the second bridge bank, the mid-span construction platform extending between the first bridge bank and the second bridge bank, and being located in the middle of the arch frame of the arch bridge; A mid-span displacement assembly is arranged on a mid-span construction platform. The mid-span displacement assembly is connected to the middle part of the arch frame of the arch bridge. The mid-span displacement assembly is used to displace the arch frame of the arch bridge as a whole to a construction position between the first bridge bank and the second bridge bank.

2. The mid-span displacement structure for arch bridge construction according to claim 1, characterized in that: The mid-span displacement structure further comprises: Two first slides are respectively arranged on the first bridge bank and the second bridge bank, and the two ends of the arch frame of the arch bridge are respectively slidably connected with the first bridge bank and the second bridge bank through two first slideways.

3. The mid-span displacement structure for arch bridge construction according to claim 2, characterized in that: The mid-span displacement assembly includes: A plurality of support rods, wherein the plurality of support rods are symmetrically arranged on both sides of the mid-span construction platform, the plurality of support rods are located between the first bridge bank and the second bridge bank, and the plurality of support rods respectively form a support body on both sides of the mid-span construction platform; Two second slides, the two second slides are respectively arranged on both sides of the mid-span construction platform, the two second slides are respectively connected to the plurality of support rods, and the two second slides are both provided with a second slideway, and the setting direction of the second slideway is consistent with the setting direction of the first slideway; a plurality of locking blocks, each of which is disposed in the two second slideways, wherein a sliding block is disposed at one end of each locking block, and the locking block is slidably connected to the second slideway via the sliding block; A plurality of anchor rods, wherein the plurality of anchor rods are vertically arranged at the other end of the locking block, one end of the anchor rod away from the locking block is inserted into the support frame of the arch bridge arch frame, and the other end of the locking block is connected to the support frame of the arch bridge arch frame through the anchor rod; Two pulling assemblies are symmetrically arranged on one end of the two second slides, the pulling assemblies are located away from the first bridge bank and the second bridge bank, and one end of the pulling assembly is connected to the locking block.

4. The mid-span displacement structure for arch bridge construction according to claim 3, characterized in that: The pulling assembly comprises: An anchor block, the anchor block is provided on the second slide, the anchor block is located at a position of the second slide away from the first bridge bank, and the anchor block is used to provide a moving fulcrum; A pulling member, one end of which is connected to the anchor block, and the other end of which is connected to the locking block via a connecting steel rope.

5. The mid-span displacement structure for arch bridge construction according to claim 4, characterized in that: The pulling member is any one of a hand chain hoist, an electric hoist or a hydraulic telescopic structure.

6. The mid-span displacement structure for arch bridge construction according to claim 3, characterized in that: The locking block is inclined on a surface away from the second slideway, and the locking block abuts against the arched inner wall of the arch bridge arch frame through the inclination, and the anchor rod is connected to the locking block at the inclination of the locking block.

7. A mid-span displacement structure for arch bridge construction according to claim 5 or 6, characterized in that: The mid-span displacement assembly further comprises: Multiple lifting members are respectively arranged on multiple support rods, and the lifting members are located between the support rods and the second slide. The lifting members are used to drive the support slide height of the second slide and the locking block as a whole.

8. The mid-span displacement structure for arch bridge construction according to claim 7, characterized in that: Also includes: a first limiting plate, which is arranged at a position where the second slide plate is away from the pulling assembly, and is used to prevent the sliding block from driving the locking block to move out of the second slideway of the second slide plate; Two second limit plates, the two second limit plates are symmetrically arranged on both sides of the second slide, and the two second limit plates are located on both sides of the second slide. The second limit plates are used to prevent the sliding block from driving the locking block to move out of the second slide of the second slide from the side of the second slide.

9. The mid-span displacement structure for arch bridge construction according to claim 1, characterized in that: The arch bridge arch frame comprises: Multiple sets of arch structures are arch-shaped and are arranged parallel to each other between the first bridge bank and the second bridge bank; Wherein, transverse connecting rods are provided between the multiple groups of arch structures, and the transverse connecting rods are used to transversely connect the multiple groups of arch structures.

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