Method for quickly replacing bridge deck slab

Abstract

The invention belongs to the technical field of bridge deck slab replacement, and discloses a bridge deck slab rapid replacement method, a bridge deck slab is replaced in a single-piece mode through bridge deck slab rapid replacement equipment, and the bridge deck slab rapid replacement equipment comprises a main beam, a front supporting leg, a rear supporting leg, a front beam, a rear beam, a front beam crane, a rear beam crane, a first supporting frame, a second supporting frame and a wheel train. The bridge deck rapid replacement method comprises the steps that a main beam, a front beam and a rear beam are supported by a single-line bridge, and the bridge deck on the outer side is replaced through a front beam hanger and a rear beam hanger; a wheel train is pushed in the direction perpendicular to the driving direction of the bridge, the main beam, the front beam and the rear beam are supported by the single-line bridge, and the bridge deck in the middle position is replaced by the front beam hanger and the rear beam hanger; the wheel train is pushed in the direction perpendicular to the driving direction of the bridge, the main beam is supported by the single-line bridge, the front beam and the rear beam are jointly supported by the single-line bridge and the adjacent-line bridge, and bridge decks on the inner sides of the front beam crane and the rear beam crane are replaced; according to the bridge deck slab rapid replacement method, the adjacent line bridge supporting equipment is utilized, a support does not need to be arranged under a beam, and driving under the beam is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of bridge deck replacement, and in particular to a method for quickly replacing a bridge deck. Background Art

[0002] With the continuous development of urbanization, the number and total length of highway bridges in the country continue to grow, accompanied by the continuous emergence of old and dangerous bridges. Bridge damage is divided into bridge deck damage, bridge support damage and bridge pier damage. Among them, bridge deck damage is a common way of bridge damage. The replacement of highway bridges over railways and underpasses of existing railways are increasing. The replacement of beams over existing railways and underpasses of existing railways have become difficult points in beam replacement construction. The construction method used in the past was to set up brackets under the beams to replace the old beams, or to use cranes for lifting, disassembly and installation.

[0003] However, the use of scaffolding under the beam will affect transportation under the beam. During construction in the city, it will seriously affect traffic and cause line disconnection. The use of crane lifting requires a larger construction space, has low construction safety, and requires complete clearance of the upper part of the bridge deck to be replaced, so it is not suitable for use. Summary of the invention

[0004] The purpose of the present invention is to provide a method for quickly replacing a bridge deck, which utilizes a bridge adjacent to a line to replace the bridge deck, has a fast construction speed, and does not affect traffic under the beam.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A method for quickly replacing a bridge deck, using a bridge deck quick replacement device to replace a bridge deck in a single piece, the bridge deck quick replacement device comprising a main beam and front legs and rear legs respectively installed at both ends of the main beam in the length direction, a front beam and a rear beam installed at intervals on the main beam along the length direction of the main beam, and a front beam hanger and a rear beam hanger respectively slidably installed on the front beam and the rear beam, the main beam is arranged along the travel direction of the bridge, the front beam and the rear beam are both arranged perpendicular to the travel direction of the bridge, both ends of the front beam in the length direction and both ends of the rear beam in the length direction are respectively provided with a first support frame and a second support frame, the bottoms of the first support frame and the second support frame are both provided with a wheel system, the method for quickly replacing a bridge deck comprises:

[0007] S1. Replace the outer bridge deck, the main beam, the front beam and the rear beam are supported by a single-track bridge, and the front beam hanger and the rear beam hanger replace the outer bridge deck;

[0008] S2. Replace the bridge deck at the middle position, push the wheel train perpendicular to the travel direction of the bridge, the main beam, the front beam and the rear beam are supported by the single-track bridge, and the front beam crane and the rear beam crane replace the bridge deck at the middle position;

[0009] S3. Replace the inner bridge deck, push the wheel system perpendicular to the travel direction of the bridge, the main beam is supported by the single-track bridge, the front beam and the rear beam are supported by the single-track bridge and the adjacent bridge, and the front beam crane and the rear beam crane replace the inner bridge deck.

[0010] Preferably, the S1 comprises:

[0011] S11, the front beam crane and the rear beam crane lift and release a single old board on the outside;

[0012] S12, lift the new board to the installation position;

[0013] S13, looping S11 and S12 until all the damaged boards on the outside are replaced.

[0014] Preferably, in S1, the front support leg and the rear support leg are supported on the bridge deck of the single-track bridge, the first support frame is suspended in the air, and the second support frame is supported on the bridge deck on the inner side of the single-track bridge.

[0015] Preferably, S2 comprises:

[0016] S21, the front beam crane and the rear beam crane lift and release a single old board in the middle position;

[0017] S22, lift the new board to the installation position;

[0018] S23, looping S21 and S22 until all the bad boards in the middle position are replaced.

[0019] Preferably, in S2, the wheel train is pushed perpendicular to the traveling direction of the bridge, the front support legs and the rear support legs are supported on the bridge deck of the single-track bridge, the first support frame is supported on the bridge deck on the outer side of the single-track bridge, and the second support frame is supported on the bridge deck on the inner side of the single-track bridge.

[0020] Preferably, S3 includes:

[0021] S31, the front beam crane and the rear beam crane lift and release the single old board on the inner side;

[0022] S32, lift the new board to the installation position;

[0023] S33, loop the above S31 and S32 until all the bad boards inside are replaced.

[0024] Preferably, in S3, the wheel train is pushed perpendicular to the traveling direction of the bridge, the front support legs and the rear support legs are supported on the bridge deck of the single-track bridge, the first support frame is supported on the bridge deck in the middle position of the single-track bridge, and the second support frame is supported on the bridge deck of the adjacent line bridge.

[0025] Preferably, the front beam and the rear beam are both provided with auxiliary legs with adjustable positions, and the two auxiliary legs are used to support the front beam and the rear beam respectively.

[0026] Preferably, in S1, the auxiliary legs are supported on the bridge deck of the single-track bridge.

[0027] Preferably, the bridge deck rapid replacement equipment also includes a beam-carrying vehicle, which is arranged on the bridge deck of the single-track bridge or the bridge deck of the adjacent line bridge along the travel direction of the bridge, and the beam-carrying vehicle is located below the front beam and the rear beam, and the beam-carrying vehicle is used to transport old and new decks.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides a method for quickly replacing a bridge deck, which uses a bridge deck quick replacement device to replace a bridge deck in a single piece. The bridge deck quick replacement device includes a main beam and front legs and rear legs respectively installed at both ends of the main beam in the length direction, a front beam and a rear beam installed on the main beam at intervals along the length direction of the main beam, and a front beam hanger and a rear beam hanger respectively slidably installed on the front beam and the rear beam. The main beam is arranged along the travel direction of the bridge, and the front beam and the rear beam are arranged perpendicular to the travel direction of the bridge. Both ends of the front beam in the length direction and the two ends of the rear beam in the length direction are respectively provided with a first support frame and a second support frame, and the bottoms of the first support frame and the second support frame are both provided with a wheel system. The method for quickly replacing a bridge deck includes: S1, more Replace the outer bridge deck, the main beam, front beam and rear beam are supported by a single-track bridge, and the front beam crane and rear beam crane replace the outer bridge deck; S2, replace the bridge deck in the middle position, push the wheel system perpendicular to the travel direction of the bridge, the main beam, front beam and rear beam are supported by a single-track bridge, and the front beam crane and rear beam crane replace the bridge deck in the middle position; S3, replace the inner bridge deck, push the wheel system perpendicular to the travel direction of the bridge, the main beam is supported by a single-track bridge, the front beam and rear beam are supported by the single-track bridge and the adjacent bridge, and the front beam crane and rear beam crane replace the inner bridge deck; the method for rapid replacement of bridge decks provided by the present invention utilizes the supporting equipment of the adjacent bridge, and there is no need to arrange supports under the beam, and does not affect the driving under the beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the bridge deck rapid replacement device provided in the first embodiment of the present invention. Figure 1 ;

[0031] Figure 2This is a schematic diagram of the structure of the bridge deck rapid replacement device provided in the first embodiment of the present invention. Figure 2 ;

[0032] Figure 3 A schematic diagram of a method for quickly replacing a bridge deck provided by the first embodiment of the present invention for replacing a bridge deck with a single piece Figure 1 ;

[0033] Figure 4 A schematic diagram of a method for quickly replacing a bridge deck provided by the first embodiment of the present invention for replacing a bridge deck with a single piece Figure 2 ;

[0034] Figure 5 A schematic diagram of a method for quickly replacing a bridge deck provided by the first embodiment of the present invention for replacing a bridge deck with a single piece Figure 3 ;

[0035] Figure 6 A schematic diagram of a method for quickly replacing a bridge deck provided by Embodiment 2 of the present invention for replacing a bridge deck as a whole Figure 1 ;

[0036] Figure 7 A schematic diagram of a method for quickly replacing a bridge deck provided by Embodiment 2 of the present invention for replacing a bridge deck as a whole Figure 2 .

[0037] In the figure:

[0038] 10. Single-track bridge; 20. Adjacent line bridge; 11. Main beam; 111. Main track; 12. Front outrigger; 13. Rear outrigger; 21. Front beam; 22. Rear beam; 23. First supporting frame; 24. Second supporting frame; 31. Front beam crane; 32. Rear beam crane; 4. Wheel train; 5. Auxiliary outrigger; 6. Beam-carrying vehicle. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] Embodiment 1

[0044] This embodiment provides a method for rapid replacement of a bridge deck, which uses a bridge deck rapid replacement device to replace a bridge deck in a single piece, and uses adjacent bridge support equipment. There is no need to arrange supports under the beam, and the traffic under the beam is not affected.

[0045] Prior to this, a brief introduction to the bridge deck rapid replacement equipment is given:

[0046] See also Figure 1-Figure 5 The bridge deck rapid replacement equipment includes a main support, a beam group, a hoist and a beam-carrying vehicle 6, wherein the main support is erected on the bridge deck or the beam pier along the travel direction of the bridge, the beam group is installed on the main support and supported by the single-track bridge 10 or the double-track bridge, the beam group can drive the main support to move perpendicular to the travel direction of the bridge, thereby switching between the two states of support for the single-track bridge 10 and support for the double-track bridge, the hoist is installed on the beam group, the beam-carrying vehicle 6 is arranged on the bridge deck of the single-track bridge 10 or the bridge deck of the adjacent line bridge 20 along the travel direction of the bridge, and the beam-carrying vehicle 6 is located below the front beam 21 and the rear beam 22, and is used to move the old plate or the new plate. When dismantling the old plate, the old plate is lifted by the hoist, further moved along the beam group, and placed on the beam-carrying vehicle 6, and transported by the beam-carrying vehicle 6. When installing the new plate, the new plate is transported by the beam-carrying vehicle 6 and lifted to the installation position by the hoist.

[0047] The main support includes a main beam 11, a front support leg 12 and a rear support leg 13. The main beam 11 is arranged along the travel direction of the bridge. The front support leg 12 and the rear support leg 13 are respectively installed at the two ends of the length direction of the main beam 11. The beam group includes a front beam 21 and a rear beam 22. The front beam 21 and the rear beam 22 are installed on the main beam 11 at intervals along the length direction of the main beam 11. The front beam 21 and the rear beam 22 are both arranged perpendicular to the travel direction of the bridge. The two ends of the front beam 21 in the length direction are respectively provided with a first support frame 23 and a second support frame 24. The two ends of the rear beam 22 in the length direction are respectively provided with a first support frame 23 and a second support frame 24. A group of corresponding first support frames 23 and second support frames 24 are used to support the front beam 21 or the rear beam 22 on the bridge deck to prevent it from overturning.

[0048] Preferably, the first support frame 23 and the second support frame 24 are triangular or rectangular, and the bottom width of the first support frame 23 is not less than the top width, and the bottom width of the second support frame 24 is not less than the top width, so as to stably support the front beam 21 and the rear beam 22. Further preferably, the first support frame 23 is parallel to the second support frame 24, and the plane where the first support frame 23 is located is parallel to the travel direction of the bridge, so as to improve its supporting strength for the front beam 21 and the rear beam 22.

[0049] Suitably, the lifting device includes a front beam hanger 31 and a rear beam hanger 32, which are slidably installed on the front beam 21 and the rear beam 22 respectively. When removing the old board, the front beam hanger 31 and the rear beam hanger 32 simultaneously lift the old board, move the old board and place it on the beam car 6. When installing the new board, the front beam hanger 31 and the rear beam hanger 32 simultaneously lift the new board on the beam car 6, move the new board and place it to the installation position.

[0050] Since the lengths of the bridge decks of bridges on different lines are different, the front beam 21 and the rear beam 22 are both slidably connected to the main beam 11, and then the vertical distance between the front beam hanger 31 and the rear beam hanger 32 is adjusted to adapt to bridge decks of different lengths. For example, the beam group also includes a front connector and a rear connector, the top of the front connector is slidably connected to the main beam 11 along the length direction of the main beam 11, and the top of the rear connector is slidably connected to the main beam 11 along the length direction of the main beam 11. The main beam 11 is provided with a main track 111 along its length direction, and the top of the front connector and the top of the rear connector are both slidably clamped on both sides of the main track 111. Further preferably, the main track 111 cooperates with the main beam 11 to form a convex shape, and the tops of the front connector and the rear connector are both provided with concave grooves to further improve the clamping strength and prevent falling off.

[0051] It should be noted that when replacing the outer bridge deck, the second support frame 24 of the front beam 21 and the second support frame 24 of the rear beam 22 are supported on the bridge deck of the single-track bridge 10, and the first support frame 23 of the front beam 21 and the first support frame 23 of the rear beam 22 are suspended in the air; when replacing the bridge deck in the middle position, the first support frame 23 and the second support frame 24 drive the main support to move perpendicular to the direction of travel of the bridge, so that the first support frame 23 and the second support frame 24 are both supported on the bridge deck of the single-track bridge 10; when replacing the inner bridge deck, the first support frame 23 and the second support frame 24 continue to drive the main support to move perpendicular to the direction of travel of the bridge, so that the first support frame 23 of the front beam 21 and the first support frame 23 of the rear beam 22 are supported on the bridge deck of the adjacent line bridge 20, and the second support frame 24 of the front beam 21 and the second support frame 24 of the rear beam 22 are supported on the bridge deck of the single-track bridge 10.

[0052] It can be seen from the above that the first support frame 23 and the second support frame 24 can both drive the entire equipment to move. In order to meet the mobility requirements and realize the replacement of the entire bridge deck of the double-track bridge, this embodiment is provided with a wheel train 4 at the bottom of the first support frame 23 and the second support frame 24. The wheel train 4 drives the front beam 21 and the rear beam 22 to move perpendicular to the travel direction of the bridge, thereby realizing the complete replacement of the bridge deck.

[0053] Preferably, the wheel train 4 includes a plurality of universal wheels, which can, on the one hand, drive the front beam 21 and the rear beam 22 to move perpendicularly to the travel direction of the bridge, thereby realizing the replacement of the double-track full bridge deck; on the other hand, drive the front beam 21 and the rear beam 22 to move along the travel direction of the bridge, thereby adjusting the vertical distance between the front beam hanger 31 and the rear beam hanger 32 to adapt to bridge decks of different lengths.

[0054] Further preferably, a plurality of universal wheels in the wheel train 4 are arranged in a matrix to stably support the first support frame 23 and the second support frame 24 .

[0055] Furthermore, when the second support frame 24 of the front beam 21 and the second support frame 24 of the rear beam 22 are supported on the bridge deck of the single-track bridge 10, and the first support frame 23 of the front beam 21 and the first support frame 23 of the rear beam 22 are suspended in the air, the overturning moment is large. When the bridge deck stepped on by the second support frame 24 of the front beam 21 and the second support frame 24 of the rear beam 22 in the process is of poor quality, collapse is likely to occur. Therefore, the front beam 21 and the rear beam 22 are both equipped with auxiliary legs 5 with adjustable positions. When the first support frame 23 is suspended in the air, the two auxiliary legs 5 support the front beam 21 and the rear beam 22 respectively, and the auxiliary legs 5 cooperate to support and prevent collapse.

[0056] The bridge deck rapid replacement method provided in this embodiment can replace the bridge deck in a single piece, specifically, it can be disassembled and installed immediately. The bridge deck rapid replacement method includes:

[0057] S1. Replace the outer bridge deck. The main beam 11, the front beam 21 and the rear beam 22 are supported by the single-track bridge 10. The front beam hanger 31 and the rear beam hanger 32 replace the outer bridge deck.

[0058] S2. Replace the bridge deck at the middle position, push the wheel system 4 perpendicular to the travel direction of the bridge, the main beam 11, the front beam 21 and the rear beam 22 are supported by the single-track bridge 10, and the front beam hanger 31 and the rear beam hanger 32 replace the bridge deck at the middle position;

[0059] S3. Replace the inner bridge deck, push the wheel system 4 perpendicular to the travel direction of the bridge, the main beam 11 is supported by the single-track bridge 10, the front beam 21 and the rear beam 22 are jointly supported by the single-track bridge 10 and the adjacent line bridge 20, and the front beam hanger 31 and the rear beam hanger 32 replace the inner bridge deck.

[0060] Specifically, the side facing away from each other in a double-track bridge is the outer side, and the side close to each other is the inner side. When replacing the outer bridge deck, the main beam 11, the front beam 21 and the rear beam 22 are supported by the single-track bridge 10, and the front beam hanger 31 and the rear beam hanger 32 replace the outer bridge deck. When replacing the bridge deck in the middle position, the wheel train 4 is pushed perpendicular to the travel direction of the bridge. The main beam 11, the front beam 21 and the rear beam 22 are supported by the single-track bridge 10, and the front beam hanger 31 and the rear beam hanger 32 replace the bridge deck in the middle position. When replacing the inner bridge deck, the wheel train 4 continues to be pushed perpendicular to the travel direction of the bridge. The main beam 11 is supported by the single-track bridge 10, and the front beam 21 and the rear beam 22 are jointly supported by the single-track bridge 10 and the adjacent line bridge 20, and the front beam hanger 31 and the rear beam hanger 32 replace the inner bridge deck.

[0061] S1 includes:

[0062] S11, the front beam crane 31 and the rear beam crane 32 lift and release the single old board on the outside;

[0063] S12, lift the new board to the installation position;

[0064] S13, loop S11 and S12 until all the damaged boards on the outside are replaced.

[0065] Specifically, see Figure 1-Figure 3 The front support leg 12 and the rear support leg 13 are supported on the bridge deck of the single-track bridge 10, the first support frame 23 is suspended, the second support frame 24 is supported on the bridge deck on the inner side of the single-track bridge 10, the auxiliary support leg 5 is supported on the bridge deck of the single-track bridge 10, and the beam-carrying vehicle 6 is arranged between the auxiliary support leg 5 and the first support frame 23 along the travel direction of the bridge. The front beam crane 31 and the rear beam crane 32 lift a single old board on the outside, and after releasing the old board to the beam-carrying vehicle 6, the beam-carrying vehicle 6 drives away from the construction position, and another beam-carrying vehicle 6 carries a new board into the lifting position. The beam crane and the rear beam crane 32 are connected at intervals and lift a single new board to the installation position, and the new board is installed in place. The above process is repeated until all the bad boards on the outside are replaced.

[0066] S2 includes:

[0067] S21, the front beam crane 31 and the rear beam crane 32 lift and release a single old board in the middle position;

[0068] S22, lift the new board to the installation position;

[0069] S23, loop S21 and S22 until all the bad boards in the middle position are replaced.

[0070] Specifically, the wheel system 4 is pushed perpendicularly to the direction of travel of the bridge, and the front support legs 12 and the rear support legs 13 are always supported on the bridge deck of the single-track bridge 10 until the first support frame 23 supports the bridge deck on the outside of the single-track bridge 10, and the second support frame 24 supports the bridge deck on the inside of the single-track bridge 10, and the support of the auxiliary support legs 5 is cancelled. The beam-carrying vehicle 6 is arranged on the inside of the single-track bridge 10 along the direction of travel of the bridge, and the front beam crane 31 and the rear beam crane 32 lift a single old board in the middle position. After releasing the old board to the beam-carrying vehicle 6, the beam-carrying vehicle 6 drives away from the construction position, and another beam-carrying vehicle 6 carries a new board into the lifting position. The beam crane and the rear beam crane 32 are connected at intervals and lift a single new board to the installation position, and the new board is installed in place. The above process is repeated until all the bad boards in the middle position are replaced.

[0071] In other feasible embodiments, when the bridge deck at the middle position is replaced by replacing the bridge deck in a single piece, the wheel train 4 is pushed perpendicularly to the travel direction of the bridge, and the front legs 12 and the rear legs 13 are always supported on the bridge deck of the single-track bridge 10. Figure 4 Until the first support frame 23 supports the bridge deck on the outside of the single-track bridge 10, and the second support frame 24 supports the bridge deck on the inside of the adjacent line bridge 20, the support of the auxiliary support leg 5 is cancelled, and the broken board in the middle position of the single-track bridge 10 can also be replaced.

[0072] S3 includes:

[0073] S31, the front beam crane 31 and the rear beam crane 32 lift and release the single old board on the inside;

[0074] S32, lift the new board to the installation position;

[0075] S33, loop S31 and S32 until all the damaged boards on the inside are replaced.

[0076] Specifically, the wheel train 4 is continuously pushed perpendicularly to the travel direction of the bridge, and the front legs 12 and the rear legs 13 are always supported on the bridge deck of the single-track bridge 10. Figure 5, until the first support frame 23 supports the bridge deck at the middle position of the single-track bridge 10, and the second support frame 24 supports the bridge deck of the adjacent line bridge 20, the beam-carrying vehicle 6 is arranged on the inner side of the adjacent line bridge 20 along the travel direction of the bridge, and the front beam crane 31 and the rear beam crane 32 lift a single old board at the middle position, and after releasing the old board to the beam-carrying vehicle 6, the beam-carrying vehicle 6 drives away from the construction position, and another beam-carrying vehicle 6 carries the new board into the lifting position, the beam crane and the rear beam crane 32 are connected at intervals and lift a single new board to the installation position, and install the new board in place until all the bad boards on the inside are replaced.

[0077] Embodiment 2

[0078] The present embodiment is an improvement on the first embodiment, and provides a method for rapid replacement of bridge decks, specifically, replacing the bridge deck as a whole, that is, dismantling the entire deck and then installing it as a whole. The front beam crane 31 and the rear beam crane 32 lift and release the old deck in sequence from the outside to the inside until all the bridge decks of the single-track bridge 10 are removed, and then multiple new decks are lifted and installed in sequence. The adjacent bridge 20 is used to support the equipment, and there is no need to arrange supports under the beam, which does not affect the traffic under the beam.

[0079] First, remove the outer and middle bridge decks, see Figure 6 The front support leg 12 and the rear support leg 13 are supported on the beam pier on the outside of the single-track bridge 10, the first support frame 23 is suspended, the second support frame 24 is supported on the bridge deck on the inside of the single-track bridge 10, the auxiliary support leg 5 is supported on the innermost bridge deck of the single-track bridge 10, and the beam-carrying vehicle 6 is arranged between the auxiliary support leg 5 and the first support frame 23 along the travel direction of the bridge. The front beam crane 31 and the rear beam crane 32 lift multiple old boards at the outer and middle positions from the outside to the inside in turn, and release them alternately to the two beam-carrying vehicles 6, and are taken away by the beam-carrying vehicles 6 until all the bad boards at the outer and middle positions are removed.

[0080] Secondly, remove the inner bridge deck and determine whether the beam-carrying vehicle 6 can be accommodated between the auxiliary legs 5 and the inner bridge deck to be removed. If the beam-carrying vehicle 6 cannot be accommodated between the auxiliary legs 5 and the inner bridge deck to be removed, push the wheel system 4 perpendicular to the travel direction of the bridge. The front legs 12 and the rear legs 13 are always supported on the beam pier in the middle of the single-track bridge 10, and the first support frame 23 is always suspended. Please refer to Figure 7 , until the second support frame 24 is supported on the bridge deck of the adjacent bridge 20, the beam-carrying vehicle 6 is set on the bridge deck of the adjacent bridge 20 along the travel direction of the bridge, and is located below the front beam 21 and the rear beam 22, and the front beam crane 31 and the rear beam crane 32 lift multiple old boards on the inside in turn from the outside to the inside, and release them alternately to the two beam-carrying vehicles 6, and are taken away by the beam-carrying vehicles 6 until all the bad boards on the inside are removed.

[0081] At this point, all the bridge decks of the single-track bridge 10 have been removed. Further, the operation is reversed, with two beam-carrying vehicles 6 transporting new decks in turn, and the front beam crane 31 and the rear beam crane 32 lifting multiple new decks in turn, installing the multiple new decks in turn from the inside to the outside in the installation position, completing the overall laying of the bridge deck of the single-track bridge 10.

[0082] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for quickly replacing a bridge deck, using a bridge deck quick replacement device to replace a bridge deck in a single piece, the bridge deck quick replacement device comprising a main beam (11) and a front support leg (12) and a rear support leg (13) respectively installed at two ends of the main beam (11) in a length direction, a front beam (21) and a rear beam (22) installed on the main beam (11) at intervals along the length direction of the main beam (11), and a front beam hanger (31) and a rear beam hanger (32) respectively slidably installed on the front beam (21) and the rear beam (22), the main beam (11) is arranged along the travel direction of the bridge, the front beam (21) and the rear beam (22) are both arranged perpendicular to the travel direction of the bridge, the two ends of the front beam (21) in the length direction and the two ends of the rear beam (22) in the length direction are respectively provided with a first support frame (23) and a second support frame (24), the bottoms of the first support frame (23) and the second support frame (24) are both provided with a wheel system (4), characterized in that: The bridge deck rapid replacement method comprises: S1, replacing the outer bridge deck, the main beam (11), the front beam (21) and the rear beam (22) are supported by the single-track bridge (10), and the front beam hanger (31) and the rear beam hanger (32) replace the outer bridge deck; S2, replacing the bridge deck at the middle position, pushing the wheel train (4) perpendicular to the travel direction of the bridge, the main beam (11), the front beam (21) and the rear beam (22) are supported by the single-track bridge (10), and the front beam hanger (31) and the rear beam hanger (32) replace the bridge deck at the middle position; S3, replace the inner bridge deck, push the wheel system (4) perpendicular to the travel direction of the bridge, the main beam (11) is supported by the single-track bridge (10), the front beam (21) and the rear beam (22) are jointly supported by the single-track bridge (10) and the adjacent bridge (20), and the front beam hanger (31) and the rear beam hanger (32) replace the inner bridge deck.

2. A method for rapid replacement of a bridge deck according to claim 1, characterized in that: The S1 includes: S11, the front beam crane (31) and the rear beam crane (32) lift and release a single old board on the outside; S12, lift the new board to the installation position; S13, looping S11 and S12 until all the damaged boards on the outside are replaced.

3. A method for rapid replacement of a bridge deck according to claim 2, characterized in that: In S1, the front support leg (12) and the rear support leg (13) are supported on the bridge deck of the single-track bridge (10), the first support frame (23) is suspended in the air, and the second support frame (24) is supported on the bridge deck on the inner side of the single-track bridge (10).

4. A method for rapid replacement of a bridge deck according to claim 3, characterized in that: The S2 includes: S21, the front beam crane (31) and the rear beam crane (32) lift and release a single old board in the middle position; S22, lift the new board to the installation position; S23, looping S21 and S22 until all the bad boards in the middle position are replaced.

5. A method for rapid replacement of a bridge deck according to claim 4, characterized in that: In S2, the wheel train (4) is pushed perpendicularly to the travel direction of the bridge, the front support leg (12) and the rear support leg (13) are supported on the bridge deck of the single-track bridge (10), the first support frame (23) is supported on the bridge deck on the outer side of the single-track bridge (10), and the second support frame (24) is supported on the bridge deck on the inner side of the single-track bridge (10).

6. A method for rapid replacement of a bridge deck according to claim 5, characterized in that: The S3 includes: S31, the front beam crane (31) and the rear beam crane (32) lift and release the single old board on the inner side; S32, lift the new board to the installation position; S33, loop the above S31 and S32 until all the bad boards inside are replaced.

7. A method for rapid replacement of a bridge deck according to claim 6, characterized in that: In S3, the wheel train (4) is pushed perpendicularly to the travel direction of the bridge, the front support leg (12) and the rear support leg (13) are supported on the bridge deck of the single-track bridge (10), the first support frame (23) is supported on the bridge deck at the middle position of the single-track bridge (10), and the second support frame (24) is supported on the bridge deck of the adjacent line bridge (20).

8. A method for rapid replacement of a bridge deck according to claim 1, characterized in that: The front beam (21) and the rear beam (22) are both provided with auxiliary supporting legs (5) so that their positions can be adjusted. The two auxiliary supporting legs (5) are used to support the front beam (21) and the rear beam (22) respectively.

9. A method for rapid replacement of a bridge deck according to claim 8, characterized in that: In S1, the auxiliary support leg (5) is supported on the bridge deck of the single-track bridge (10).

10. A method for rapid replacement of a bridge deck according to any one of claims 1 to 9, characterized in that: The bridge deck rapid replacement device also includes a beam-carrying vehicle (6), which is arranged on the bridge deck of the single-track bridge (10) or the bridge deck of the adjacent line bridge (20) along the travel direction of the bridge, and the beam-carrying vehicle (6) is located below the front beam (21) and the rear beam (22), and the beam-carrying vehicle (6) is used to transport old and new boards.

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