A segmented demolition system and demolition method for an interchange overpass

Abstract

The present invention relates to a segmented demolition system and demolition method for an interchange bridge. The segmented demolition system for an interchange bridge relates to the technical field of segmented demolition of bridges; the segmented demolition system for an interchange bridge comprises a support platform and a bottom support plate. The bottom support plate of the present invention is carried by an engineering vehicle. After the engineering vehicle carries the bottom support plate, the overall equipment is transported to the bottom of the bridge deck of the interchange bridge. First, the prestressed anchor cables in the bridge deck of the interchange bridge are cut off by a cutting assembly, and then the bridge deck of the interchange bridge is cut into sections. The cut section of the bridge deck of the interchange bridge is supported above the support platform, and then the engineering vehicle can be used to transport this section of the bridge deck of the interchange bridge to a designated location for demolition, without the need for on-site demolition, which has unexpected benefits in alleviating traffic pressure, rapid demolition, and less dust.

Description

Technical Field

[0001] The invention belongs to the technical field of segmented dismantling of bridges, and in particular relates to a segmented dismantling system and a dismantling method for an interchange overpass. Background Art

[0002] An interchange refers to a road construction with a cross-line structure that separates the intersecting roads spatially, with the upper and lower roads connected by ramps to accommodate turning vehicles. Some interchanges need to be demolished during urban reconstruction.

[0003] In the prior art, the method for dismantling an interchange is on-site dismantling, and an excavator is used for dismantling, which has low dismantling efficiency and affects traffic. If rapid dismantling is required, such as: an interchange with a total length of 503.471 meters needs to be dismantled simultaneously using 116 excavators, although the dismantling time is short, it undoubtedly causes a large-scale paralysis of traffic, and the cost is high. Therefore, a segmented dismantling system and dismantling method of an interchange are proposed to solve the above-mentioned drawbacks. Summary of the invention

[0004] The purpose of the present invention is to provide a segmented dismantling system for an interchange overpass with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A segmented demolition system for an interchange overpass, comprising a support platform and a bottom support plate, wherein the bottom support plate is used to be installed on an engineering vehicle to play a role in connecting the main body;

[0007] The support platform is arranged above the bottom support plate, and is used to support the bottom of the bridge deck of the interchange. The height and inclination of the support platform are adjustable, and the height and inclination of the support platform are adaptively adjusted according to the height and inclination of the bridge deck of the interchange.

[0008] The support platform is provided with a cutting assembly for cutting the bridge deck of the interchange into cut sections. The cutting assembly moves along the width direction of the bridge deck of the interchange, and the cutting assembly is arranged on the side of the support platform.

[0009] As a further optimization scheme of the present invention, a sealing plate is provided inside the support platform, which divides the interior of the support platform into an upper chamber and a lower chamber distributed up and down, and a plurality of first motors are fixedly installed on the upper surface of the sealing plate, and a threaded anchor rod is fixedly connected to the rotating shaft of the first motor, and a plurality of circular holes connected to the interior of the upper chamber are provided above the support platform, and the circular holes correspond to the threaded anchor rods.

[0010] As a further optimization solution of the present invention, an air compressor is fixedly installed on one side of the support platform, and the output end of the air compressor is connected to the interior of the lower chamber.

[0011] As a further optimization scheme of the present invention, the input end of the air compressor is connected to a filter box, an air pipe is arranged on the filter box, a dust suction chamber is arranged inside the upper end of the support table, a dust suction groove is arranged at the upper end of the dust suction chamber, and there are multiple dust suction grooves, which are distributed at equal angles along the outer circumference of the circular hole, and the dust suction grooves pass through the upper surface of the support table. The end of the air pipe away from the filter box is connected to the interior of the dust suction chamber.

[0012] As a further optimization solution of the present invention, a filter is installed on the dust suction groove.

[0013] As a further optimization solution of the present invention, the cutting assembly includes at least one of a cutting wheel mechanism, a high-pressure water cutting mechanism, and a laser cutting mechanism.

[0014] As a further optimization solution of the present invention, an ultrasonic detector is installed on the other side of the support platform, and the ultrasonic detector is used to monitor the position of the prestressed anchor cables in the bridge deck of the interchange overpass.

[0015] As a further optimization solution of the present invention, the height and inclination of the support platform are adjusted by the cooperation of the first electric cylinder and the second electric cylinder;

[0016] The upper and lower ends of the first electric cylinder are respectively hinged with a second hinge seat and a first hinge seat, a slide rail is fixedly installed on the lower surface of the support platform, the second hinge seat is slidably arranged on the slide rail, and the first hinge seat is fixedly connected to the upper surface of the bottom support plate;

[0017] The upper end of the second electric cylinder is hinged with a third hinged seat, and the lower end of the second electric cylinder is equipped with a fixed seat, the fixed seat is fixedly installed on the upper surface of the bottom support plate, and the third hinged seat is fixedly installed on the lower surface of the support platform.

[0018] As a further optimization scheme of the present invention, driving wheel grooves are provided at the four corners of the upper surface of the support platform, a motor groove is connected to one side of the driving wheel groove, a second motor and a first electric push rod are provided in the motor groove, a driving wheel is movably provided in the driving wheel groove, the first electric push rod is distributed vertically, the bottom of the first electric push rod is fixedly installed on the bottom surface of the motor groove, the upper end of the first electric push rod is fixedly connected to the side surface of the second motor, and the rotating shaft at the end of the second motor is fixedly connected to the center point of the end face of the driving wheel.

[0019] The present invention also discloses a segmented dismantling method for an interchange overpass, comprising the following steps:

[0020] S1: Use an engineering vehicle to carry the bottom support plate, start the engineering vehicle, and transport the bottom support plate and the support platform to the middle position below the bridge deck of the interchange. Then use two engineering vehicles to carry two sets of bottom support plates and support platforms respectively, so that the three sets of support platforms are supported between two adjacent bridge piers below the bridge deck of the interchange.

[0021] S2: First, the position of the prestressed anchor cable in the bridge deck of the interchange is detected, and the prestressed anchor cable is cut off by using a cutting assembly, and then the bridge deck of the interchange is cut into cut sections. Before cutting, the bridge deck of the interchange is anchored above the support platform;

[0022] S3: Transferring: using an engineering vehicle to transport the cut section to one side of the transport engineering vehicle, contacting the bridge deck of the interchange anchored on the support platform, adjusting the inclination of the support platform to transfer the bridge deck of the interchange to the transport engineering vehicle, and gradually cutting the entire bridge deck of the interchange into multiple cut sections for transfer, and the remaining bridge piers under the bridge deck of the interchange are removed on site;

[0023] S4: Transport the cut sections to a location that does not affect traffic for further dismantling.

[0024] The beneficial effects of the present invention are as follows: the bottom support plate of the present invention is carried by an engineering vehicle, and after the engineering vehicle carries the bottom support plate, the overall equipment is transported to the bottom of the interchange bridge deck, and the prestressed anchor cables in the interchange bridge deck are first cut off by using a cutting assembly, and then the interchange bridge deck is cut into sections, and the cut section of the interchange bridge deck is supported above the support platform, and then the engineering vehicle can be used to transport this section of the interchange bridge deck to a designated location for dismantling, without the need for on-site dismantling, which has an unexpected benefit in alleviating traffic pressure, is quick to dismantle, and produces less dust.

[0025] The height and inclination of the support platform in the present invention are adjustable, so that the support platform can be adaptively attached to the bottom surface of the bridge deck of the interchange overpass.

[0026] In the present invention, the threaded anchor rod can be anchored at the bottom of the bridge deck of the interchange, thereby achieving the purpose of fixing the bridge deck of the interchange and preventing the bridge deck of the interchange from being separated from the upper surface of the support platform.

[0027] The present invention combines a diamond cutting wheel with a laser cutting mechanism, thereby achieving both low removal cost and low equipment loss.

[0028] The present invention fully utilizes the air intake power of the air compressor to achieve the purpose of dust reduction.

[0029] The present invention improves the driving wheel to avoid damage to the driving wheel, thereby providing stronger protection for the driving wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the support platform of the present invention from a first viewing angle;

[0031] Figure 2 is a schematic structural diagram of the support platform of the present invention from a second viewing angle;

[0032] Figure 3 is a front view of the support platform of the present invention;

[0033] Figure 4 is a top view of the support platform of the present invention;

[0034] Figure 5 is a first-view stereoscopic cross-sectional view of the support platform of the present invention;

[0035] Figure 6 is a second perspective stereoscopic cross-sectional view of the support platform of the present invention;

[0036] Figure 7 is a third perspective sectional view of the support platform of the present invention;

[0037] Figure 8 is a planar cross-sectional view of the support platform of the present invention;

[0038] Fig. 9 The present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0039] Fig.10 The present invention Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0040] Fig.11 The present invention Figure 7 A magnified schematic diagram of the structure at C in the middle;

[0041] Fig.12 It is a schematic diagram of the structure of the threaded anchor rod of the present invention when it extends from the upper surface of the support platform;

[0042] Fig.13 is a top view of the bridge deck of the interchange overpass of the present invention;

[0043] Fig.14 is a cross-sectional view of the bridge deck of the interchange overpass of the present invention;

[0044] Fig.15 It is a schematic diagram of the support platform of the present invention when it is supported at the bottom of the bridge deck of an interchange overpass for demolition work;

[0045] Fig.16 It is a schematic diagram of a plurality of support platforms of the present invention cooperating to support the bridge deck of an interchange overpass;

[0046] Fig.17It is a structural schematic diagram of the threaded anchor rod on the support platform of the present invention being anchored at the bottom of the bridge deck of an interchange overpass.

[0047] In the figure: support platform 1, cutting assembly 2, driving wheel 3, first electric cylinder 4, bottom support plate 5, second electric cylinder 6, air compressor 7, electric slide rail 8, ultrasonic detector 9, round hole 10, dust suction groove 11, air pipe 12, fixed seat 13, first hinge seat 14, second hinge seat 15, third hinge seat 16, slide rail 17, first motor 18, dust suction chamber 19, second motor 20, upper chamber 21, sealing plate 22, lower chamber 23, first electric push rod 24, motor groove 25, driving wheel groove 26, threaded anchor rod 27, filter screen 28, diamond cutting wheel 29, third motor 30, motor support plate 31, second electric push rod 32, support rib 33, electric slider 34, interchange overpass deck 101, prestressed anchor cable 102, bridge pier 103, cut section 201. DETAILED DESCRIPTION

[0048] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0049] like Figure 1 - Fig.17 As shown, a segmented dismantling system for an interchange bridge comprises a support platform 1, a cutting assembly 2, a driving wheel 3, a first electric cylinder 4, a bottom support plate 5 and a second electric cylinder 6; the support platform 1 acts as a supporting plane and is used to support the bottom of the bridge deck 101 of the interchange bridge, and the driving wheels 3 are arranged at the four corners of the upper surface of the support platform 1, and at least four of them are arranged. The driving wheels 3 can realize the purpose of sliding the bridge deck 101 of the interchange bridge on the upper surface of the support platform 1, which is convenient for loading and unloading the bridge deck 101 of the interchange bridge.

[0050] During operation, the bottom support plate 5 is carried by an engineering vehicle. After the engineering vehicle carries the bottom support plate 5, the entire equipment is transported to the bottom of the interchange bridge deck 101. First, the prestressed anchor cable 102 in the interchange bridge deck 101 is cut off by the cutting assembly 2, and then the interchange bridge deck 101 is cut into sections. The cut section of the interchange bridge deck 101 is supported above the support platform 1, and then the engineering vehicle can be used to transport this section of the interchange bridge deck 101 to a designated location for dismantling. There is no need to dismantle it on the spot, which has an unexpected benefit in alleviating traffic pressure. The dismantling is quick and there is less dust.

[0051] In the present invention, the first electric cylinder 4 and the second electric cylinder 6 can be used to adjust the height and inclination of the support platform 1, so that the support platform 1 can be adaptively fitted on the bottom surface of the interchange bridge deck 101. The height of the support platform 1 can be adaptively adjusted according to the different heights of different sections of the interchange bridge deck 101, and the inclination of the support platform 1 can be adaptively adjusted according to the different inclinations of different sections of the interchange bridge deck 101.

[0052] The present invention also takes into account the danger that the interchange bridge deck 101 may easily slip and become dangerous when the support platform 1 is used to carry the interchange bridge deck 101. Therefore, a circular hole 10 is provided on the upper surface of the support platform 1, and a liftable sealing plate 22 is provided inside the support platform 1. The sealing plate 22 divides the interior of the support platform 1 into an upper chamber 21 and a lower chamber 23 distributed up and down. A first motor 18 is fixedly installed on the upper surface of the sealing plate 22. A threaded anchor rod 27 is fixedly connected to the rotating shaft at the upper end of the first motor 18. The threaded anchor rod 27 corresponds to the circular hole 10 and can be extended from the circular hole 10. When the threaded anchor rod 27 is extended from the circular hole 10, the first motor 18 is started, and the threaded anchor rod 27 can be anchored to the bottom of the interchange bridge deck 101, thereby achieving the purpose of fixing the interchange bridge deck 101 and preventing the interchange bridge deck 101 from detaching from the upper surface of the support platform 1.

[0053] In actual use, a plurality of circular holes 10 are provided and distributed in a matrix, so as to facilitate stable fixation of the bridge deck 101 of the interchange overpass.

[0054] The cutting assembly 2 in the present invention can use a cutting wheel mechanism, a high-pressure water cutting mechanism, a laser cutting mechanism and other equipment to cut the interchange bridge deck 101. The present invention only discloses a method of using a diamond cutting wheel 29 to cut the interchange bridge deck 101. Specifically, an electric slide rail 8 is fixedly arranged on both sides of the support platform 1, and an electric slider 34 is slidably arranged on the electric slide rail 8. A supporting rib 33 is fixedly arranged on the electric slider 34. A second electric push rod 32 is fixedly installed on the upper surface of the supporting rib 33. The second electric push rod 32 is vertically distributed. The upper end of the second electric push rod 32 is fixedly connected to a motor support plate 31. A third motor 30 is fixedly installed on the upper surface of the motor support plate 31. The diamond cutting wheel 29 is fixedly connected to the rotating shaft of the third motor 30. The electric slide rail 8, the third motor 30 and the second electric push rod 32 are started at the same time, which can push the diamond cutting wheel 29 to rise. The diamond cutting wheel 29 rotates while rising to cut the interchange bridge deck 101. When the diamond cutting wheel 29 moves along the length direction of the electric slide rail 8, it can cut the interchange bridge deck 101 in the width direction. Cutting the interchange bridge deck 101 twice can make the interchange bridge deck 101 in sections be fixed separately on the support platform 1, which is convenient for detailed dismantling after transportation. It is particularly suitable for areas with developed transportation. This dismantling method has low cost and little impact on traffic.

[0055] In another embodiment, a laser cutting mechanism is further provided on the electric slide rail 8, and an ultrasonic detector 9 is further installed on one side surface of the support platform 1, so that prestressed anchor cables 102 are pre-buried inside the bridge deck 101 of the interchange overpass, and the prestressed anchor cables 102 are used to reduce the stress borne by the entire bridge deck 101 of the interchange overpass, and a plurality of prestressed anchor cables 102 are usually provided, and are made of steel. If only the diamond cutting wheel 29 is used for cutting, the diamond cutting wheel 29 will be severely worn, and the service life of the diamond cutting wheel 29 will be severely reduced. Therefore, after the ultrasonic detector 9 detects the distribution position of the prestressed anchor cables 102 inside the bridge deck 101 of the interchange overpass by using ultrasonic detection, the laser cutting mechanism can be used to cut the prestressed anchor cables 102, and the remaining parts can be cut using the diamond cutting wheel 29, taking into account the service life of the diamond cutting wheel 29 and the overall operating cost.

[0056] It should be noted that a controller is used to connect the cutting component 2, the electric slide rail 8 and the ultrasonic detector 9. When the ultrasonic detector 9 detects the position of the prestressed anchor cable 102, the information can be fed back to the controller. The controller controls the cutting component 2 to slide on the electric slide rail 8 to the position corresponding to the prestressed anchor cable 102, and then starts the cutting component 2 to cut the prestressed anchor cable 102. The controller is not shown in the figure. It is an existing common equipment. An electrical box can be set on the side of the support platform 1 for installation, which will not be elaborated here.

[0057] Since a plurality of first motors 18 are arranged inside the support platform 1 in the present invention, the threaded anchor rod 27 can be anchored to the bottom of the bridge deck 101 of the interchange overpass only when the plurality of first motors 18 are all raised. Therefore, in the present invention, the plurality of first motors 18 are all fixedly mounted on the sealing plate 22, and an air compressor 7 is fixedly mounted on the other side of the support platform 1. The output end of the air compressor 7 is connected to the interior of the lower chamber 23. When the air compressor 7 is started, air can be inflated into the lower chamber 23, thereby causing the sealing plate 22 to rise. During the rising process of the sealing plate 22, the plurality of first motors 18 are lifted up at the same time, instead of using an electric cylinder or the like to control the rising of the first motors 18 one by one, thereby saving costs.

[0058] It is worth mentioning that in the present invention, a dust suction chamber 19 is further provided inside the upper end of the support platform 1, and the upper end of the dust suction chamber 19 is connected to a dust suction groove 11, and a plurality of dust suction grooves 11 are provided, and the plurality of dust suction grooves 11 are distributed at equal angles in a circle of the circular hole 10, and a filter screen 28 is installed at the upper end of the dust suction groove 11, and the dust suction chamber 19 is connected with the filter box through the air pipe 12, and the filter box is connected to the input end of the air compressor 7. When the air compressor 7 is started, the external air passes through the dust suction groove 11, the dust suction chamber 19, the air pipe 12 and the filter box in turn to replenish the air compressor 7, and during the air compressor 7 suction process, it can simultaneously absorb the dust generated when the threaded anchor rod 27 is anchored at the bottom of the bridge deck 101 of the interchange overpass, thereby achieving the purpose of dust reduction, so that there is less dust during the demolition of the bridge deck 101 of the interchange overpass.

[0059] like Fig.10 As shown in the figure, the filter screen 28 at the upper end of the dust suction groove 11 is used to prevent large particles of concrete from entering the dust suction groove 11 and causing blockage, and has a certain filtering effect. The dust is collected in the filter box after being sucked in, and the air intake of the air compressor 7 is also ensured to be clean. In the present invention, the input and output ends of the air compressor 7 are changed to achieve the purpose of fully utilizing the intake power to reduce dust.

[0060] During the process of transporting the interchange bridge deck 101 on the upper surface of the support platform 1 to the transport engineering vehicle and transporting it away; the first step: start the first motor 18 and rotate the threaded anchor rod 27 in the opposite direction, the threaded anchor rod 27 can be withdrawn from the bottom of the interchange bridge deck 101, so that the interchange bridge deck 101 remains in a fitted state above the support platform 1, and then the support platform 1 and the interchange bridge deck 101 are transported to the side of the transport engineering vehicle, and then the first electric cylinder 4 and the second electric cylinder 6 are started to tilt the support platform 1, and the interchange bridge deck 101 can slide smoothly onto the transport engineering vehicle.

[0061] In the actual transportation process, the interchange bridge deck 101 usually remains tilted and cannot continue to slide when it slides onto the transport engineering vehicle. Therefore, the drive wheel 3 in the present invention can be started. When the drive wheel 3 rotates, it can assist in transporting the interchange bridge deck 101 to the transport engineering vehicle.

[0062] Considering that the support platform 1 needs to support the interchange bridge deck 101 for a long time, the driving wheel 3 is actually subjected to the most severe force, because the driving wheel 3 is convexly arranged above the support platform 1, and the driving wheel 3 is very easy to be damaged. Therefore, the driving wheel 3 is improved in the present invention. Specifically, a motor slot 25 and a driving wheel slot 26 are arranged inside the support platform 1, the motor slot 25 is connected and arranged on one side of the driving wheel slot 26, the driving wheel 3 is movably arranged in the driving wheel slot 26, the second motor 20 and the first electric push rod 24 are arranged in the motor slot 25, and the first electric push rod 24 is vertically arranged. The bottom of the first electric push rod 24 is fixedly installed on the bottom surface of the motor slot 25, the upper end of the first electric push rod 24 is fixedly connected to the side surface of the second motor 20, and the rotating shaft at the end of the second motor 20 is fixedly connected to the center point of the end surface of the driving wheel 3. When the first electric push rod 24 is started, the second motor 20 and the driving wheel 3 can be retracted downward, so that the driving wheel 3 is retracted inside the driving wheel slot 26, so that the bottom surface of the interchange bridge deck 101 is attached to the upper surface of the larger support platform 1, thereby avoiding damage to the driving wheel 3 and providing strong protection for the driving wheel 3.

[0063] When the second motor 20 is started, the driving wheel 3 can be driven to rotate, thereby transporting the bridge deck 101 of the interchange overpass above the support platform 1 .

[0064] In the present invention, multiple first electric cylinders 4 and second electric cylinders 6 are arranged at the bottom of the support platform 1 to ensure that the support platform 1 has sufficient supporting strength for the bridge deck 101 of the interchange overpass. In the present invention, three first electric cylinders 4 and three second electric cylinders 6 are taken as examples. The three first electric cylinders 4 are arranged in a row, and the three second electric cylinders 6 are arranged in a row. The two rows are symmetrical about the bottom of the support platform 1. The upper end of the second electric cylinder 6 is hinged with a third articulated seat 16, and the third articulated seat 16 is fixed on the bottom surface of the support platform 1. The lower end of the third articulated seat 16 is installed with a fixed seat 13, and the fixed seat 13 is fixedly arranged on the upper surface of the bottom support plate 5. The upper end of the first electric cylinder 4 is hinged with a second articulated seat 15, and a slide rail 17 is fixedly installed on the bottom surface of the support platform 1. The second articulated seat 15 is slidably connected to the slide rail 17. The lower end of the first electric cylinder 4 is hinged with a first articulated seat 14, and the first articulated seat 14 is fixedly installed on the upper surface of the bottom support plate 5.

[0065] When adjusting the height of the support platform 1, the first electric cylinder 4 and the second electric cylinder 6 can be started simultaneously, so that the extension and retraction of the first electric cylinder 4 and the second electric cylinder 6 remain synchronized, and the height of the support platform 1 can be adjusted to adapt to the interchange bridge deck 101 of different heights.

[0066] When adjusting the inclination of the support platform 1, the first electric cylinder 4 can be started. When the first electric cylinder 4 is extended or retracted, the height of the second electric cylinder 6 is kept unchanged. The second articulated seat 15 will slide adaptively on the slide rail 17, so that the support platform 1 is tilted to adapt to the interchange bridge deck 101 with different inclinations.

[0067] like Fig.15 As shown in the figure, it is a schematic diagram of the support platform 1 supported at the bottom of the interchange bridge deck 101 for demolition work. The cut section 201 in the figure is the section that is about to be separated from the interchange bridge deck 101 as a whole. When the cutting components 2 on both sides of the support platform 1 are started, the two sides of the support platform 1 can be cut off, so that the cut section 201 falls on the upper surface of the support platform 1.

[0068] In order to prevent the interchange bridge deck 101 from collapsing during actual use, at least three support platforms 1 should be used for coordination, such as Fig.16 As shown in the figure, three support platforms 1 are distributed between two piers 103 at the bottom of the interchange bridge deck 101. The interchange bridge deck 101 corresponding to the middle support platform 1 is first cut into segments, and then gradually cut to both sides. When cutting, it is necessary to ensure that the bottom of the interchange bridge deck 101 adjacent to the cut segment is supported by the support platform 1 to maintain the safety effect.

[0069] After the bridge deck 101 of the interchange overpass is completely dismantled and transported away, the bridge piers 103 can be simply dismantled. The overall dismantling efficiency is high and the cost is low, which is particularly suitable for urban projects.

[0070] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A segmented demolition system for an interchange overpass, comprising a support platform (1) and a bottom support plate (5), characterized in that: The bottom support plate (5) is used to be installed on the engineering vehicle to play a role in connecting the main body; The support platform (1) is arranged above the bottom support plate (5), and the support platform (1) is used to support the bottom of the bridge deck (101) of the interchange bridge. The height and inclination of the support platform (1) are adjustable, and the height and inclination of the support platform (1) are adaptively adjusted according to the height and inclination of the bridge deck (101) of the interchange bridge. The support platform (1) is provided with a cutting assembly (2) for cutting the bridge deck (101) of the interchange bridge into cut sections (201); the cutting assembly (2) moves along the width direction of the bridge deck (101) of the interchange bridge, and the cutting assembly (2) is arranged on the side of the support platform (1); A sealing plate (22) is provided inside the support platform (1), and the sealing plate (22) divides the interior of the support platform (1) into an upper chamber (21) and a lower chamber (23) distributed vertically. A plurality of first motors (18) are fixedly mounted on the upper surface of the sealing plate (22), and a threaded anchor rod (27) is fixedly connected to the rotating shaft of the first motor (18). A plurality of circular holes (10) communicating with the interior of the upper chamber (21) are provided above the support platform (1), and the circular holes (10) correspond to the threaded anchor rods (27); An air compressor (7) is fixedly mounted on one side of the support platform (1), and an output end of the air compressor (7) is in communication with the interior of the lower chamber (23); The input end of the air compressor (7) is connected to a filter box, and an air pipe (12) is provided on the filter box. A dust suction chamber (19) is provided inside the upper end of the support platform (1). A dust suction groove (11) is provided at the upper end of the dust suction chamber (19). A plurality of dust suction grooves (11) are provided. The plurality of dust suction grooves (11) are distributed at equal angles along the outer circumference of the circular hole (10). The dust suction grooves (11) penetrate the upper surface of the support platform (1). One end of the air pipe (12) away from the filter box is connected to the inside of the dust suction chamber (19).

2. The segmented dismantling system for an interchange bridge according to claim 1, characterized in that: A filter screen (28) is installed on the dust suction groove (11).

3. The segmented dismantling system for an interchange bridge according to claim 1, characterized in that: The cutting assembly (2) comprises at least one of a cutting wheel mechanism, a high-pressure water cutting mechanism, and a laser cutting mechanism.

4. The segmented dismantling system for an interchange bridge according to claim 1, characterized in that: An ultrasonic detector (9) is installed on the other side of the support platform (1), and the ultrasonic detector (9) is used to monitor the position of the prestressed anchor cable (102) in the bridge deck (101) of the interchange overpass.

5. The segmented dismantling system for an interchange bridge according to claim 1, characterized in that: The height and inclination of the support platform (1) are adjusted by the cooperation of the first electric cylinder (4) and the second electric cylinder (6); The upper and lower ends of the first electric cylinder (4) are respectively hinged with a second hinge seat (15) and a first hinge seat (14); a slide rail (17) is fixedly mounted on the lower surface of the support platform (1); the second hinge seat (15) is slidably disposed on the slide rail (17); and the first hinge seat (14) is fixedly connected to the upper surface of the bottom support plate (5); The upper end of the second electric cylinder (6) is hingedly connected to a third hinged seat (16), and the lower end of the second electric cylinder (6) is mounted with a fixed seat (13), the fixed seat (13) is fixedly mounted on the upper surface of the bottom support plate (5), and the third hinged seat (16) is fixedly mounted on the lower surface of the support platform (1).

6. The segmented dismantling system for an interchange bridge according to claim 1, characterized in that: A driving wheel groove (26) is provided at each of the four corners of the upper surface of the support platform (1); a motor groove (25) is provided in communication with one side of the driving wheel groove (26); a second motor (20) and a first electric push rod (24) are provided in the motor groove (25); a driving wheel (3) is movably provided in the driving wheel groove (26); the first electric push rod (24) is vertically distributed; the bottom of the first electric push rod (24) is fixedly mounted on the bottom surface of the motor groove (25); the upper end of the first electric push rod (24) is fixedly connected to the side surface of the second motor (20); and the rotating shaft at the end of the second motor (20) is fixedly connected to the center point of the end surface of the driving wheel (3).

7. A segmented dismantling method for an interchange overpass, characterized in that: The segmented dismantling system for the interchange bridge according to any one of claims 1 to 6 further comprises the following steps: S1: using an engineering vehicle to carry the bottom support plate (5), starting the engineering vehicle, transporting the bottom support plate (5) and the support platform (1) to the middle position below the bridge deck (101) of the interchange, and then using two engineering vehicles to carry two sets of bottom support plates (5) and support platforms (1) respectively, so that the three sets of support platforms (1) are respectively supported between two adjacent bridge piers (103) below the bridge deck (101) of the interchange; S2: firstly, detecting the position of the prestressed anchor cable (102) in the bridge deck (101) of the interchange bridge, using the cutting assembly (2) to first cut the prestressed anchor cable (102), and then continuing to cut the bridge deck (101) of the interchange bridge into cut sections (201). Before cutting, the bridge deck (101) of the interchange bridge is anchored above the support platform (1); S3: transporting, using an engineering vehicle to transport the cut section (201) to one side of the transport engineering vehicle, contacting the interchange bridge deck (101) anchored on the support platform (1), adjusting the inclination of the support platform (1) to transport the interchange bridge deck (101) to the transport engineering vehicle, and successively cutting the entire interchange bridge deck (101) into multiple cut sections (201) and then transporting them, and the remaining bridge piers (103) located below the interchange bridge deck (101) are removed on site; S4: The cut section (201) is transported to a location that does not affect traffic and further dismantled.

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