Bridge concrete overhaul road formwork structure capable of rapid movement and installation and its use method

Abstract

The present invention discloses a bridge concrete inspection road formwork structure that can be quickly moved and installed. The inspection road formwork body includes a bottom formwork and a side formwork that are fixedly connected to each other to form an L-shaped structure. The inspection road formwork body is located in the bottom suspension beam opening of the side U-shaped structure. The bottom suspension beams are arranged at intervals along the length direction of the inspection road formwork body, wherein the bottom formwork is fixed on the bottom crossbeam of the bottom suspension beam. A cantilever beam is arranged horizontally just above each bottom suspension beam. The middle part of each cantilever beam is supported on the bottom steel beam through a strut, the tail end is connected to the guardrail reserved steel bar through a connecting device, and the head end is fixedly connected to the top crossbeam of the bottom suspension beam through an adjusting screw. The bottom surfaces of all the top crossbeams are fixedly connected to the longitudinal sliding beam. By improving the key processes such as template installation, disassembly, and movement, the bridge concrete inspection road formwork structure is changed, the problem of template hoisting difficulties in conventional construction methods is solved, construction efficiency is improved, and operational safety risks and construction costs are reduced.

Description

Technical Field

[0001] The present invention relates to a bridge concrete overhaul road formwork structure and a use method thereof, in particular to a bridge concrete overhaul road formwork structure that can be quickly moved and installed and a use method thereof. Background Art

[0002] The maintenance road of a cable-stayed bridge is located outside the bridge deck's anti-collision guardrail. Its main structural forms include concrete and steel structures. During the construction process, the steel structure maintenance road has a lighter weight and is usually installed together with the main beam. The installation is quick and convenient, but the construction cost is relatively high. The concrete maintenance road usually takes into account the centralized drainage function and is heavier than the steel structure maintenance road. It is generally constructed by pouring cast-in-place concrete in sections. Repeated installation and removal of formwork are required, and the construction process is relatively cumbersome. It is more difficult to control the line shape of the maintenance road during construction, and the construction requirements are also relatively high.

[0003] Conventional concrete manhole construction methods typically require formwork fabrication based on the manhole's design dimensions, followed by measurement and positioning. Formwork installation is then performed using hoisting equipment, followed by rebar installation, concrete pouring, curing, and formwork removal. This process is then repeated until all manholes are completed. During the construction phase of Section 0, a bracket was set up on the Section 0 construction platform to support the manhole formwork. A tower crane was used to install the manhole formwork, install rebar, pour concrete, and remove the formwork. As construction progressed, the tower crane's lifting range became limited, making it impossible to complete the installation and concrete pouring of the manhole formwork. Consequently, a mobile crane or other lifting equipment was required to complete the installation, removal, and concrete pouring of the manhole formwork. Using a mobile crane on the bridge deck to install, remove, and pour concrete for the manhole formwork significantly limited the lifting area due to the limited bridge deck space, the crane's lifting range, and the obstruction of the bridge erection machine and cable stays. This significantly increased safety risks during the lifting process, reduced work efficiency, prolonged the construction period, and increased costs, resulting in less than ideal results. Summary of the Invention

[0004] The present invention aims to provide a rapidly movable and installable formwork structure for bridge concrete overpasses and its use method. By improving key processes in concrete overpass construction, such as formwork installation, removal, and movement, the existing bridge concrete overpass formwork structure is modified, resolving the difficulty of formwork hoisting in conventional construction methods, improving construction efficiency, and reducing operational safety risks and construction costs.

[0005] The technical solution of the present invention: a bridge concrete inspection road formwork structure that can be quickly moved and installed includes an inspection road formwork body, the inspection road formwork body includes a bottom formwork and a side formwork fixedly connected to each other to form an L-shaped structure, the inspection road formwork body is located in the bottom suspension beam opening of the side U-shaped structure, and multiple bottom suspension beams are arranged at intervals along the length direction of the inspection road formwork body, wherein the bottom formwork is fixed on the bottom crossbeam of the bottom suspension beam, and a cantilever beam is horizontally arranged directly above each bottom suspension beam, and the tail end of the cantilever beam extends to the cast bridge deck, the middle part of each cantilever beam is supported on the bottom steel beam through a strut, the tail end is connected to the reserved steel bar of the guardrail through a connecting device, and the head end is fixedly connected to the top crossbeam of the bottom suspension beam through an adjusting screw, and the bottom surfaces of all top crossbeams are fixedly connected to the longitudinal sliding beam.

[0006] In the aforementioned rapidly movable and installable bridge concrete overhaul road formwork structure, the bottom formwork includes a bottom steel plate, and a plurality of spaced distribution beams are fixedly connected between the bottom steel plate and the bottom cross beam.

[0007] In the aforementioned rapidly movable and installable bridge concrete inspection road formwork structure, the tail end of the cantilever beam is connected to the guardrail reserved steel bars via an anchor hook, and the hook body of the anchor hook hooks the guardrail reserved steel bars.

[0008] In the aforementioned bridge concrete inspection road formwork structure that can be quickly moved and installed, a pad is provided between the head end of the cantilever beam and the top cross beam.

[0009] In the aforementioned bridge concrete inspection road formwork structure that can be quickly moved and installed, a supporting wooden block is provided between the top of the support rod and the cantilever beam.

[0010] The method for using the bridge concrete overhaul road formwork structure that can be quickly moved and installed includes the following steps:

[0011] S1: Fix the bottom form and side form of a certain length together to form the L-shaped structure of the maintenance road formwork body;

[0012] S2: Place the main body of the maintenance road formwork in the opening of the bottom hanging beam with a side U-shaped opening. The bottom formwork is fixed to the bottom crossbeam of the bottom hanging beam, and longitudinal sliding beams are fixedly connected to the bottom surface of all top crossbeams.

[0013] S3: When the maintenance road formwork is first installed, the fixed maintenance road formwork, bottom hanging beam and longitudinal sliding beam are hoisted to the maintenance road formwork initial installation station using hoisting equipment;

[0014] S4: A cantilever beam is installed horizontally above each bottom support beam. The tail end of the cantilever beam is connected to the guardrail reserved steel bar through a connecting device, the middle bottom is supported on the steel beam by a support rod, and the head end is connected to the top crossbeam of the bottom support beam through an adjusting screw. The cantilever beam is used to lift the maintenance road formwork body, the bottom support beam and the longitudinal sliding beam, and their elevation is adjusted to complete the installation of the maintenance road formwork body;

[0015] S5: Complete the installation of the repair road reinforcement and the pouring and curing of the repair road concrete and bridge deck wet joint concrete;

[0016] S6: When the concrete reaches the demoulding strength after curing, the connection between the top crossbeam and the cantilever beam can be removed. When removing the formwork, first twist the upper nut of the adjusting screw to lower the height of the inspection road formwork body and separate the bottom formwork from the concrete. When the longitudinal sliding beam drops to the surface of the poured inspection road concrete, the connection between the cantilever beam and the top crossbeam is released, and the inspection road formwork body is removed;

[0017] S7: After the main body of the maintenance road formwork is dismantled, a steel wire rope is connected to the front end of the maintenance road formwork body. The steel wire rope is connected to the traction mechanism in the front. Check the connection between the steel wire rope and the front end of the maintenance road formwork body. After confirming that the connection is firm, start the traction device to slowly pull the maintenance road formwork body forward. The forward movement distance is at most 1 / 2 of the length of the maintenance road formwork body. After the maintenance road formwork body is in place, repeat step S4 to release the connection between the maintenance road formwork body and the steel wire rope. The traction forward of the maintenance road formwork body is completed. When pouring the concrete maintenance road of the bridge in the subsequent section, repeat steps S5-S7.

[0018] In the aforementioned method for using the quickly movable and installable bridge concrete inspection road formwork structure, in S4, after the elevation of the inspection road formwork body is adjusted, a foam board is installed at the end of the previous segment to form a fracture, and a release agent is applied to the surface of the inspection road formwork body. The gap at the connection between the inspection road formwork body and the steel beam is checked and blocked with foam glue, and finally the installation of the inspection road formwork body is completed.

[0019] In the aforementioned method of using the quickly movable and installable bridge concrete inspection road formwork structure, in S5, after the inspection road reinforcement is installed, the elevation of the inspection road formwork body is remeasured. The remeasurement points are the front end and the middle part of the inspection road formwork body, and ensure that the rear end of the inspection road formwork body is in close contact with the previous section. For abnormal elevations, adjust the adjusting nut on the adjusting screw at that location. After the elevation is correct, the inspection road concrete is poured and cured.

[0020] In the aforementioned method of using the quickly movable and installable bridge concrete inspection road formwork structure, in S6, when removing the formwork, a jacking device is set between the top beam and the poured inspection road concrete to support the top beam, and then the upper nut of the adjusting screw is twisted to lower the height of the inspection road formwork body.

[0021] In the aforementioned method for using the rapidly movable and installable bridge concrete overhaul road formwork structure, in said S6, before removing the formwork, a layer of redwood boards is laid on the concrete surface of the overhaul road as a slideway.

[0022] Beneficial effects of the present invention: Compared with the prior art, the technical solution of the present invention fixes the bottom formwork and the side formwork together, and then connects them to the bottom hanging beam to form a whole. During the first installation in the early stage, only one hoisting is required, and then the inspection road formwork body and the bottom hanging beam are lifted and pulled as a whole through multiple cantilever beams, thereby realizing the positioning and installation of the inspection road formwork body, and then the pouring of the inspection road concrete can be carried out. After demolding, it is only necessary to remove the adjusting screw, and use the traction device to pull the inspection road formwork body and the bottom hanging beam forward as a whole. No other hoisting equipment is required to hoist and move the formwork. The present invention improves the key processes such as formwork installation and disassembly, concrete pouring, etc. in the concrete inspection road construction project, changes the conventional concrete inspection road construction method, solves the problem of hoisting difficulties in conventional construction methods, improves construction efficiency, and reduces work safety risks and construction costs.

[0023] The technical solution of this invention has been applied to the Yunwu Bridge in Contract Section T13 of the Duyun to Anshun Highway Project in Guizhou Province. This is a twin-tower, twin-cable-plane steel-concrete composite girder cable-stayed bridge. Each tower has 19 pairs of parallel cables, constructed in 22 sections (one 0# section, 19 conventional construction sections, one mid-span closure section, and one side-span closure section). The maintenance road was also constructed in 22 sections. Compared to conventional concrete maintenance road construction techniques, the use of the formwork structure and supporting construction techniques of this invention saved 11 days of construction time per main tower maintenance road.

[0024] Each section of the overhaul road constructed saved one labor shift. The 22 sections underwent overhauls over a seven-month construction period. Overall, the newly added and purchased equipment rental costs totaled 238,400 yuan, saving 858,600 yuan in equipment rental and labor costs. The total cost savings were approximately 619,400 yuan, representing significant economic benefits.

[0025] The use of this formwork structure and construction method reduces the risk of lifting during formwork installation, removal and concrete pouring, has a significant safety effect, makes project quality more controllable, and has significant social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the side structure;

[0028] Figure 3 for Figure 1 Schematic diagram of the top view structure;

[0029] Figure 4 It is a construction flow chart of the present invention.

[0030] Figure markings: 1-side formwork, 2-bottom hanging beam, 3-bottom cross beam, 4-cantilever beam, 5-support rod, 6-guardrail reserved steel bars, 7-adjusting screw, 8-top cross beam, 9-longitudinal sliding beam, 10-bottom steel plate, 11-distribution beam, 12-anchor hook, 13-pad, 14-support wooden block. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0032] Embodiments of the present invention: A bridge concrete overhaul road formwork structure that can be quickly moved and installed, such as Figure 1-3 As shown, it includes a maintenance road formwork body, which includes a bottom formwork and a side formwork 1 that are welded and fixed to each other to form an L-shaped structure. The maintenance road formwork body is located in the opening of the bottom suspension beam 2 of the side U-shaped structure, and the opening of the bottom suspension beam 2 faces the already cast bridge deck. There are multiple bottom suspension beams 2 spaced apart along the length direction of the maintenance road formwork body, wherein the bottom formwork is welded and fixed on the bottom crossbeam 3 of the bottom suspension beam 2, and a cantilever beam 4 is horizontally arranged directly above each bottom suspension beam 2, and the tail end of the cantilever beam 4 extends to the cast bridge deck, and the middle part of each cantilever beam 4 is supported on the bottom steel beam through a support rod 5, and the tail end of the cantilever beam 4 is connected to the reserved steel bar 6 of the guardrail through a connecting device, and the head end of the cantilever beam 4 is fixedly connected to the top crossbeam 8 of the bottom suspension beam 2 through an adjusting screw 7, and the bottom surfaces of all top crossbeams 8 are fixedly connected to the longitudinal sliding beam 9.

[0033] The bottom mold includes a bottom steel plate 10, and a plurality of spaced distribution beams 11 are welded and fixedly connected between the bottom steel plate 10 and the bottom cross beam 3. This structure allows the bottom mold to be fixedly connected to the bottom cross beam 3, and welding and fixing are more convenient.

[0034] The tail end of the cantilever beam 4 is connected with the guardrail reserved steel bar 6 through the anchor hook 12, and the hook body of the anchor hook 12 hooks the guardrail reserved steel bar 6. Use the anchor hook 12 to be easy to fix the tail end of the cantilever beam 4, and the adjustment and removal of the anchor hook 12 are also very convenient.

[0035] A pad 13 is provided between the head end of the cantilever beam 4 and the top crossbeam 8 to ensure the stability of the connection structure between the cantilever beam 4 and the top crossbeam 8. Of course, the stability of the connection structure can be ensured by completely fitting the bottom of the cantilever beam 4 to the top surface of the top crossbeam 8, in which case the pad 13 is not required.

[0036] A supporting wood block 14 is provided between the top of the support rod 5 and the cantilever beam 4 to increase the supporting area and ensure the stability of the supporting structure.

[0037] Method for using the formwork structure of the bridge concrete overhaul road which can be moved and installed quickly, such as Figure 4 As shown, the following steps are included:

[0038] S1: Weld and fix the bottom form and side form 1 of a certain length together to form the L-shaped structure of the maintenance road formwork body;

[0039] S2: Place the main body of the maintenance road formwork in the opening of the bottom hanging beam 2 with a side U-shaped opening. The bottom formwork is fixed on the bottom crossbeam 3 of the bottom hanging beam 2. The bottom surfaces of all the top crossbeams 8 are fixedly connected with longitudinal sliding beams 9.

[0040] S3: When the maintenance road formwork body is installed for the first time, the maintenance road formwork body, the bottom hanging beam 2 and the longitudinal sliding beam 9 fixed together are hoisted to the maintenance road formwork body initial installation station using hoisting equipment;

[0041] S4: A cantilever beam 4 is horizontally arranged directly above each bottom support beam 2. The tail end of the cantilever beam 4 is connected to the guardrail reserved steel bar 5 through a connecting device, the middle bottom is supported on the steel beam by a support rod 6, and the head end is connected to the top crossbeam 8 of the bottom support beam 3 through an adjusting screw 7. The cantilever beam 4 is used to lift the maintenance road formwork body, the bottom support beam 3 and the longitudinal sliding beam 9, and their elevation is adjusted to complete the installation of the maintenance road formwork body;

[0042] S5: Complete the installation of the repair road reinforcement and the pouring and curing of the repair road concrete and bridge deck wet joint concrete;

[0043] S6: When the concrete reaches the demoulding strength after curing, the connection between the top crossbeam 8 and the cantilever beam 4 can be removed. When demoulding, first twist the upper nut of the adjusting screw 7 to lower the height of the inspection road formwork body, and separate the bottom formwork from the concrete. When the longitudinal sliding beam 9 drops to the surface of the poured inspection road concrete, the connection between the cantilever beam 7 and the top crossbeam 8 is released, and the inspection road formwork body is removed;

[0044] S7: After the main body of the maintenance road formwork is dismantled, a steel wire rope is connected to the front end of the maintenance road formwork. The steel wire rope is connected to the traction mechanism in front. The traction mechanism can be a winch. Check the connection between the steel wire rope and the front end of the maintenance road formwork. After confirming that the connection is firm, start the traction device to slowly pull the maintenance road formwork body forward. If the maintenance road formwork body slides forward completely, when the maintenance road formwork body is separated from the cast maintenance road, the maintenance road formwork body will fall directly. In order to avoid the maintenance road formwork body from falling, the forward movement stroke is at most 1 / 2 of the length of the maintenance road formwork body. The rear end of the maintenance road formwork body is stuck by the cast maintenance road to prevent it from falling while being conveniently fixed by the cantilever beam 4. After the maintenance road formwork body is in place, repeat step S4 to release the connection between the maintenance road formwork body and the steel wire rope. The traction forward movement of the maintenance road formwork body is completed. When pouring the concrete maintenance road of the bridge in the subsequent section, repeat steps S5-S7.

[0045] In said S4, after the elevation of the maintenance road formwork body is adjusted, a foam board is installed at the end of the previous segment to form a fracture, and a release agent is applied to the surface of the maintenance road formwork body. The gap at the connection between the maintenance road formwork body and the steel beam is checked and blocked with foam glue, and finally the installation of the maintenance road formwork body is completed. This process can avoid leakage during the pouring of concrete.

[0046] In said S5, after the installation of the inspection road reinforcement is completed, the elevation of the inspection road formwork body is remeasured. The remeasurement points are the front end and the middle part of the inspection road formwork body, and it is ensured that the rear end of the inspection road formwork body is in close contact with the previous section. For abnormal elevations, the adjusting nut on the adjusting screw 7 is adjusted. After the elevation is correct, the inspection road concrete is poured and cured.

[0047] In S6, when removing the formwork, a jacking device is set between the top crossbeam 8 and the poured inspection road concrete to support the top crossbeam 8, and then the upper nut of the adjusting screw 7 is twisted to lower the height of the inspection road formwork body. The jacking device can use a jack, etc., and the top crossbeam 8 is supported by the jacking device, which makes it easy to twist the upper nut of the adjusting screw 7.

[0048] In said S6, before removing the formwork, a layer of redwood is laid on the surface of the inspection road concrete as a slide. The surface of the redwood is relatively smooth. When the longitudinal sliding beam 9 lands on the redwood, it is easy to slide when pulling the entire inspection road formwork and the bottom hanging beam 2 forward, and avoids damage to the poured inspection road concrete.

[0049] During this entire process, when the access road formwork needs to be moved forward along the bridge, the adjusting screw 7 is removed to release the temporary anchoring of the access road formwork. The top of the bottom support beam 2 is suspended on the access road via the longitudinal sliding beam 9, and the winch is activated to pull the formwork into position. When the access road formwork is pulled into place, the bottom support beam 2 is connected and fixed to the cantilever beam 4 directly above it. The tail end of the cantilever beam 4 is anchored by the anchor hook 12. The traction system wire rope is disconnected, and the elevation is adjusted using the adjusting screw 7. The access road formwork is then installed.

[0050] The entire construction is mainly divided into the following stages:

[0051] Production of the formwork body of the maintenance road

[0052] Taking the supporting project as an example, the concrete overpass is a cantilever structure, 1.25m wide, 15cm thick, and 990m long. The overpass formwork is constructed of steel, which offers high strength and rigidity, effectively ensuring the correct alignment of the overpass. The materials used are determined by the project's actual material availability. Based on the overpass design drawings for the supporting project, the steel formwork was designed using 3mm steel plates for the bottom plate 10 and side plate 1. The bottom plate is 12.3m long and 1.5m wide, while the side plate 1 is 0.17m high. The bottom and side plates 1 are welded together to form an inverted "L" shape. Distribution beams 11 are installed every 0.25m on the bottom plate 10, constructed of [80mm channel steel.] Every 3m, a bottom suspension beam 2 is welded integrally to the overpass formwork. The cantilever beam 4 is constructed of a double-jointed [20mm channel steel box, anchored to the bridge deck at the rear end. Supporting wooden blocks 14 are placed between the support rods 5 and the cantilever beam 4 to enhance support stability. The front end is connected to the bottom hanging beam 2 through a φ32 adjusting screw 7 to form a set of concrete inspection road formwork system.

[0053] Measurement and positioning

[0054] The initial positioning was performed using a total station to measure the horizontal position and elevation of the maintenance road, providing a basis for the installation of the maintenance road formwork. Subsequent installation of the maintenance road formwork was completed close to the side of the steel beam, and the level was used to adjust it according to the designed elevation.

[0055] Template Installation

[0056] The initial installation of the main body of the maintenance road formwork was performed using a tower crane, based on the measurement results. Once the formwork was in place and horizontally positioned, the rear end of the cantilever beam 4 was anchored to the bridge deck. A supporting block 14 and a strut 5 were placed in the middle. Through the reserved holes in the cantilever beam 4 and the top crossbeam 8, φ32 adjustment screws 7 and nuts were inserted to temporarily connect and secure the formwork, forming a single piece. The nuts were adjusted to achieve the desired elevation. A foam board was installed at the end of the previous segment to create a gap. A release agent was applied to the formwork surface. The gap between the formwork and the steel beam was checked and sealed with foam adhesive, completing the formwork installation.

[0057] Maintenance road reinforcement installation

[0058] The inspection road reinforcement is installed after the formwork is installed. After the installation is completed, the elevation of the inspection road formwork is remeasured. The remeasurement points are the front end and middle part of the formwork, and ensure that the rear end of the formwork is in close contact with the previous section.

[0059] Concrete pouring and curing of maintenance road

[0060] The maintenance road concrete is poured together with the bridge deck wet joint concrete. Once the concrete pouring is complete, curing can begin.

[0061] Traction mechanism installation

[0062] A traction mechanism is installed at the front end of the next section of the poured maintenance road concrete. The traction mechanism is fixedly connected to the front end of the maintenance road formwork body via a steel wire rope. A winch can be used for the traction mechanism.

[0063] Formwork removal

[0064] When the concrete has reached the demolding strength, the connection between the formwork and the cantilever beam 4 can be removed. Before demolding, care should be taken to prevent the formwork from falling and impacting the access road. When demolding, first tighten the nuts on the precision-rolled threaded steel to lower the formwork and separate the bottom formwork from the concrete. A layer of redwood boards should be laid on the surface of the access road as a slide.

[0065] Pulling the template forward

[0066] After the formwork is removed, check the connection between the wire rope and the front end of the formwork. After confirming that the connection is firm, start the winch to slowly pull the formwork forward. Once the formwork is in place, use the cantilever beam 4 to fix the formwork, release the wire rope connection of the traction mechanism, and the formwork is pulled forward.

Claims

1. A bridge concrete overhaul road formwork structure that can be quickly moved and installed, characterized by: The invention comprises a maintenance road template body, which comprises a bottom template and a side template (1) fixedly connected to each other to form an L-shaped structure. The maintenance road template body is located in the opening of the bottom suspension beam (2) of the side U-shaped structure. The bottom suspension beam (2) is provided with multiple intervals along the length direction of the maintenance road template body, wherein the bottom template is fixed on the bottom crossbeam (3) of the bottom suspension beam (2). A cantilever beam (4) is provided horizontally above each bottom suspension beam (2). The tail end of the cantilever beam (4) extends to the cast bridge deck. The middle part of each cantilever beam (4) is supported on the bottom steel beam through a support rod (5), the tail end is connected to the guardrail reserved steel bar (6) through a connecting device, and the head end is fixedly connected to the top crossbeam (8) of the bottom suspension beam (2) through an adjusting screw (7). The bottom surfaces of all the top crossbeams (8) are fixedly connected to the longitudinal sliding beam (9).

2. The rapidly movable and installable bridge concrete inspection road formwork structure according to claim 1 is characterized in that: The bottom mold comprises a bottom steel plate (10), and a plurality of spaced distribution beams (11) are fixedly connected between the bottom steel plate (10) and the bottom cross beam (3).

3. The rapidly movable and installable bridge concrete inspection road formwork structure according to claim 1 is characterized in that: The tail end of the cantilever beam (4) is connected to the guardrail reserved steel bar (6) via an anchor hook (12), and the hook body of the anchor hook (12) hooks the guardrail reserved steel bar (6).

4. The rapidly movable and installable bridge concrete inspection road formwork structure according to claim 1 is characterized in that: A cushion block (13) is provided between the head end of the cantilever beam (4) and the top crossbeam (8).

5. The rapidly movable and installable bridge concrete inspection road formwork structure according to claim 1 is characterized in that: A supporting wood block (14) is provided between the top of the support rod (5) and the cantilever beam (4).

6. A method for using the rapidly movable and installable bridge concrete overhaul road formwork structure according to any one of claims 1 to 5, characterized in that: The following steps are included: S1: Fixing a certain length of bottom formwork and side formwork (1) together to form an L-shaped structure of the maintenance road formwork body; S2: The main body of the inspection road template is placed in the opening of the bottom hanging beam (2) with a side U-shaped opening, the bottom template is fixed on the bottom crossbeam (3) of the bottom hanging beam (2), and longitudinal sliding beams (9) are fixedly connected to the bottom surfaces of all top crossbeams (8); S3: When the maintenance road formwork body is installed for the first time, the maintenance road formwork body, the bottom hanging beam (2) and the longitudinal sliding beam (9) fixed together are hoisted to the maintenance road formwork body first installation station using hoisting equipment; S4: A cantilever beam (4) is horizontally arranged directly above each bottom hanging beam (2). The tail end of the cantilever beam (4) is connected to the guardrail reserved steel bar (6) through a connecting device, the middle bottom is supported on the steel beam through a support rod (5), and the head end is connected to the top crossbeam (8) of the bottom hanging beam (2) through an adjusting screw (7). The cantilever beam (4) is used to lift the inspection road template body, the bottom hanging beam (2) and the longitudinal sliding beam (9), and their elevations are adjusted to complete the installation of the inspection road template body; S5: Complete the installation of the repair road reinforcement and the pouring and curing of the repair road concrete and bridge deck wet joint concrete; S6: When the concrete reaches the demoulding strength, the connection between the top crossbeam (8) and the cantilever beam (4) can be removed. When demoulding, first twist the upper nut of the adjusting screw (7) to lower the height of the inspection road formwork body, and separate the bottom formwork from the concrete. When the longitudinal sliding beam (9) falls to the surface of the poured inspection road concrete, the connection between the cantilever beam (4) and the top crossbeam (8) is released, and the inspection road formwork body is removed; S7: After the main body of the maintenance road formwork is dismantled, a steel wire rope is connected to the front end of the maintenance road formwork body. The steel wire rope is connected to the traction mechanism in the front. Check the connection between the steel wire rope and the front end of the maintenance road formwork body. After confirming that the connection is firm, start the traction device to slowly pull the maintenance road formwork body forward. The forward movement distance is at most 1 / 2 of the length of the maintenance road formwork body. After the maintenance road formwork body is in place, repeat step S4 to release the connection between the maintenance road formwork body and the steel wire rope. The traction forward of the maintenance road formwork body is completed. When pouring the concrete maintenance road of the bridge in the subsequent section, repeat steps S5-S7.

7. The method for using the rapidly movable and installable bridge concrete inspection road formwork structure according to claim 6 is characterized in that: In said S4, after the elevation of the maintenance road formwork body is adjusted, a foam board is installed at the end of the previous segment to form a fracture, and a release agent is applied to the surface of the maintenance road formwork body. The gap at the connection between the maintenance road formwork body and the steel beam is checked and blocked with foam glue, and finally the installation of the maintenance road formwork body is completed.

8. The method for using the rapidly movable and installable bridge concrete overhaul road formwork structure according to claim 6 is characterized in that: In said S5, after the installation of the inspection road reinforcement is completed, the elevation of the inspection road formwork body is re-measured. The re-measurement points are the front end and the middle part of the inspection road formwork body, and it is ensured that the rear end of the inspection road formwork body is in close contact with the previous section. If the elevation is abnormal, the adjusting nut on the adjusting screw (7) at that location is adjusted. After the elevation is correct, the inspection road concrete is poured and cured.

9. The method for using the rapidly movable and installable bridge concrete inspection road formwork structure according to claim 6 is characterized in that: In said S6, when removing the formwork, a lifting device is provided between the top crossbeam (8) and the poured maintenance road concrete to support the top crossbeam (8), and then the upper nut of the adjusting screw (7) is twisted to lower the height of the maintenance road formwork body.

10. The method for using the rapidly movable and installable bridge concrete overhaul road formwork structure according to claim 6, characterized in that: In said S6, before removing the formwork, a layer of redwood boards is laid on the concrete surface of the maintenance road as a slideway.

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