Self-circulation sliding rail and mounting method thereof

Abstract

The invention discloses a self-circulation sliding rail and a mounting method thereof, and belongs to the technical field of box girder construction, the self-circulation sliding rail comprises two sliding rail units arranged above a box girder, and the two sliding rail units are symmetrically arranged about the center line of the box girder and detachably connected with the box girder; each sliding rail unit comprises a plurality of sliding rail groups; the multiple sliding rail sets are sequentially connected and extend in the pouring direction of the box girder. During construction, after pouring of the second section of box girder is completed, the first sliding rail set is detached from the second sliding rail set and then connected with the last sliding rail set, after pouring of the third section of box girder is completed, the second sliding rail set is detached from the third sliding rail set and then connected with the first sliding rail set, and the like. The sliding rail sets sequentially and alternately advance in the box girder pouring direction, and the hanging bracket main truss is slidably connected with the sliding rail sets so that the hanging bracket main truss can slide in the box girder pouring direction.

Description

Technical Field

[0001] The invention belongs to the technical field of box girder construction, and particularly relates to a self-circulating slide rail and an installation method thereof. Background Art

[0002] In the existing box girder construction, in the existing box girder hanging basket method construction, the spray curing system relies on the hanging basket assembly for installation and fixation, and the box girder is cured. However, the combination of the spray curing system and the hanging basket is bound to increase the structural load of the hanging basket, increase the cost of the hanging basket, and cause a safety burden on the hanging basket. The spray curing system needs to be separated from the hanging basket. However, after the separated spray curing system is separated from the hanging basket, the spray curing system cannot slide forward along the casting direction of the box girder, and the existing slide rails are inconvenient to disassemble and assemble. The long length of the slide rails is easy to deform during installation and use, affecting the sliding of the rollers in the slide rails, and the long slide rails cannot be used after deformation, which increases the cost. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a self-circulating slide rail and an installation method thereof, which adopts the following technical solutions:

[0004] A self-circulating slide rail, comprising:

[0005] Two slide rail units are arranged above the box beam, the two slide rail units are symmetrically arranged about the center line of the box beam, and are detachably connected to the box beam; each of the slide rail units includes a plurality of slide rail groups; the plurality of slide rail groups are connected in sequence and extend along the casting direction of the box beam;

[0006] Among them, during construction, after the second section of the box girder is cast, the first slide rail group is removed from the second slide rail group and connected to the last slide rail group. After the third section of the box girder is cast, the second slide rail group is removed from the third slide rail group and connected to the first slide rail group. And so on. Multiple slide rail groups move alternately in the casting direction of the box girder, and the hanger main truss is slidably connected to the slide rail group to enable the hanger main truss to slide along the casting direction of the box girder.

[0007] Furthermore, two adjacent slide rail groups are detachably connected via a connecting piece; each of the slide rail groups includes a first slide rail group and a second slide rail group; the first slide rail group includes a first slide rail and a second slide rail arranged parallel to each other; the slide rail of the first slide rail and the slide rail of the second slide rail are arranged opposite to each other;

[0008] A pressing plate is provided above the first slide rail; the pressing plate is detachably connected to the anchoring bar of the box beam to press the first slide rail against the surface of the box beam; a pressing plate is provided above the second slide rail; the pressing plate is detachably connected to the anchoring bar of the box beam to press the second slide rail against the surface of the box beam;

[0009] The second slide rail group includes a third slide rail; the third slide rail and the second slide rail are arranged parallel to each other and are detachably connected to the box beam surface;

[0010] Among them, multiple first slide rails connected in sequence, multiple second slide rails connected in sequence, and multiple third slide rails connected in sequence all extend along the casting direction of the box girder; two adjacent first slide rails, two adjacent second slide rails, and two adjacent third slide rails are all detachably connected through the connecting piece.

[0011] Furthermore, the first slide rail, the second slide rail, and the third slide rail have the same elevation.

[0012] Furthermore, a method for installing a self-circulating slide rail is the method for installing a self-circulating slide rail as described in any one of the above items, and the installation method comprises the following steps:

[0013] S1, after the first section of the box girder is cast, the first slide rail and the second slide rail of the first slide rail group are respectively clamped with the anchor bars of the first section of the box girder surface through the pressing plate, and the third slide rail is detachably connected to the first section of the box girder surface, and then the first slide rail of the second slide rail group is clamped with the anchor bars of the first section of the box girder surface through the pressing plate, and is detachably connected to the first slide rail of the first slide rail group through a connecting piece, the second slide rail of the second slide rail group and the second slide rail of the first slide rail group are clamped with the anchor bars of the first section of the box girder surface through the pressing plate, and are detachably connected to the second slide rail of the first slide rail group through a connecting piece, the third slide rail of the second slide rail group is detachably connected to the third slide rail of the first slide rail group through a connecting piece, and is detachably connected to the first section of the box girder surface, and so on, to complete the connection of multiple slide rail groups with the first section of the box girder;

[0014] S2, after the second section of the box girder is cast, the first slide rail of the first slide rail group is disassembled from the first slide rail of the second slide rail group, and is detachably connected to the first slide rail of the last slide rail group through a connecting piece, and is clamped with the anchor bar of the second section of the box girder surface through a pressing piece; the second slide rail of the first slide rail group is disassembled from the second slide rail of the second slide rail group, and is detachably connected to the second slide rail of the last slide rail group through a connecting piece, and is clamped with the anchor bar of the second section of the box girder surface through a pressing piece; the third slide rail of the first slide rail group is disassembled from the third slide rail of the second slide rail group, and is detachably connected to the third slide rail of the last slide rail group through a connecting piece, and is detachably connected to the second section of the box girder surface;

[0015] S3. After the casting of the third section of the box girder is completed, the first slide rail of the second slide rail group is removed from the first slide rail of the third slide rail group, and is detachably connected to the first slide rail of the first slide rail group through a connecting piece, and is clamped with the anchor ribs of the third section of the box girder surface through a pressing plate. After the second slide rail of the second slide rail group is removed from the second slide rail of the third slide rail group, it is detachably connected to the second slide rail of the first slide rail group through a connecting piece, and is clamped with the anchor ribs of the third section of the box girder surface through a pressing plate. After the third slide rail of the second slide rail group is removed from the third slide rail of the third slide rail group, it is detachably connected to the third slide rail of the first slide rail group through a connecting piece, and is detachably connected to the third section of the box girder surface, and so on. Multiple slide rail groups move forward alternately in sequence along the casting direction of the box girder.

[0016] Beneficial effects:

[0017] In a self-circulating slide rail provided by the present invention, a spray maintenance system is arranged on the main truss of the hanger, and the main truss of the hanger slides along the slide rail group, and a plurality of slide rail groups move forward alternately in the casting direction of the box girder in sequence, thereby realizing the recyclable use of the track and saving costs. The main truss of the hanger can slide along the casting direction of the box girder through the self-circulating slide rail, and the length of each slide rail group is the same as the width of the cast-in-place section of the box girder, and is not easy to deform during installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the connection between the self-circulating slide rail and the main truss of the hanger of the present invention;

[0019] Figure 2 A top view of the first slide rail group of the self-circulating slide rail of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the first slide rail group of the self-circulating slide rail of the present invention being clamped with the anchoring bars of the box beam;

[0021] Figure 4 It is a structural schematic diagram of the connection between the first slide rail and the second slide rail of the self-circulating slide rail of the present invention;

[0022] Among them, 1. the first slide rail; 2. the second slide rail; 3. the third slide rail; 4. the pressing plate; 5. the connecting piece; 6. the anchor bolt; 7. the anchor bar of the box beam; 8. the main truss of the hanger. DETAILED DESCRIPTION

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

[0024] Example 1

[0025] Reference Figures 1 to 4 , a self-circulating slide rail, comprising:

[0026] Two slide rail units are arranged above the box beam, the two slide rail units are symmetrically arranged about the center line of the box beam, and are detachably connected to the box beam; each slide rail unit includes a plurality of slide rail groups; the plurality of slide rail groups are connected in sequence and extend along the casting direction of the box beam;

[0027] Among them, during construction, after the second section of the box girder is cast, the first slide rail group is removed from the second slide rail group and connected to the last slide rail group. After the third section of the box girder is cast, the second slide rail group is removed from the third slide rail group and connected to the first slide rail group. And so on. Multiple slide rail groups move forward alternately in the casting direction of the box girder, and the hanger main truss 8 is slidably connected to the slide rail group to enable the hanger main truss 8 to slide along the casting direction of the box girder.

[0028] Furthermore, two adjacent slide rail groups are detachably connected via a connecting member 5; each slide rail group includes a first slide rail group and a second slide rail group; the first slide rail group includes a first slide rail 1 and a second slide rail 2 arranged parallel to each other; the slide rail of the first slide rail 1 and the slide rail of the second slide rail 2 are arranged oppositely;

[0029] A pressing sheet 4 is provided above the first slide rail 1; the pressing sheet 4 is detachably connected to the anchoring bar 7 of the box beam to press the first slide rail 1 against the surface of the box beam; a pressing sheet 4 is provided above the second slide rail 2; the pressing sheet 4 is detachably connected to the anchoring bar 7 of the box beam to press the second slide rail 2 against the surface of the box beam;

[0030] The second slide rail group includes a third slide rail 3; the third slide rail 3 and the second slide rail 2 are arranged parallel to each other and are detachably connected to the box beam surface;

[0031] Among them, multiple first slide rails 1 connected in sequence, multiple second slide rails 2 connected in sequence, and multiple third slide rails 3 connected in sequence all extend along the casting direction of the box girder; two adjacent first slide rails 1, two adjacent second slide rails 2, and two adjacent third slide rails 3 are all detachably connected through a connecting piece 5.

[0032] The slideway of the first slide rail 1 and the slideway of the second slide rail 2 are arranged opposite to each other.

[0033] Among them, the connecting member 5 is preferably a guide rail joint flange to ensure that devices such as traction devices can pass through multiple sets of slide rails smoothly without shaking.

[0034] Among them, the length of the first slide rail 1 and the length of the second slide rail 2 in each first slide rail group are the same as the width of the cast-in-place section of the box girder, and the length of the third slide rail 3 in each second slide rail group is the same as the width of the cast-in-place section of the box girder.

[0035] Through the above technical scheme, the hanger main truss 8 and the slide rail group are slidably connected through rollers, wherein the two first rollers of the hanger main truss 8 slide in the slideway of the first slide rail 1 and the slideway of the second slide rail 2 respectively, and the two first rollers are arranged on the same horizontal horizontal plane. The second roller of the hanger main truss 8 slides in the slideway of the third slide rail 3, and a driving motor is arranged on the second roller. The fixed end of the driving motor is connected to the hanger main truss 8, and the output end of the driving motor is connected to the second roller to drive the second roller to rotate, so that the hanger main truss 8 moves on the first slide rail 1, the second slide rail 2, and the third slide rail 3 along the casting direction of the box girder.

[0036] The slide rail is used to slide the traction device and other devices. While guiding the traction device and other devices, it can also bear the weight of the spray maintenance system.

[0037] Furthermore, the first slide rail 1 , the second slide rail 2 , and the third slide rail 3 are at the same elevation.

[0038] The self-circulating slide rail provided by the present invention can be used cyclically and serves as a guide for the main truss 8 of the hanger.

[0039] Example 2

[0040] This embodiment is based on the embodiment 1: two first rollers, two second rollers and two third rollers are arranged at the bottom of the hanger main girder 8, the two first rollers are connected and arranged at the first end of the bottom of the hanger main girder 8, the two second rollers are connected and arranged at the end of the bottom of the hanger main girder 8 away from the first rollers, and the connection line between the first roller and the second roller extends along the casting direction of the box girder;

[0041] The first slide rail 1 and the second slide rail 2 are channel steels, and two channel steels of the same specification are selected as the first slide rail 1 and the second slide rail 2 respectively. The notches of the two channel steels are placed facing each other, and the two first rollers are connected and placed in the two notches respectively, and the two second rollers are connected and placed in the two notches respectively, so that the two first rollers and the two second rollers at the bottom end of the hanger main truss 8 can be slidably arranged in the notches of the channel steel, and the spacing between the two channel steels is determined according to the spacing between the two first rollers and the spacing between the two second rollers; when the channel steel is installed, the distance between the hanger main truss 8 and the concrete casting surface of the box girder is determined so that it can meet the sliding requirements of the first roller and the second roller; the pressing plate 4 is pressed on the upper flange of the channel steel, and the bottom of the channel steel is connected and reinforced by welding the channel steels on both sides with steel plates, and a slat (or steel bar) is arranged between the two channel steels arranged parallel to each other in each set of slide rails, and the slat (or steel bar) is used to connect the lower flanges of the two channel steels.

[0042] Each group of third slide rails 3 is square steel; among the two third rollers, one third roller is slidably connected to the top of the square steel and is arranged on the same straight line as the first roller, and the other third roller is slidably connected to the top of the square steel and is arranged on the same straight line as the second roller; the connecting line of the two third rollers extends along the casting direction of the box girder and is arranged parallel to the connecting line of the two first rollers and the two second rollers; one of the third rollers is driven to rotate by the driving motor on the hanger main truss 8.

[0043] Example 3

[0044] The difference between this embodiment and the second embodiment is that: two first rollers, two second rollers and two third rollers are arranged at the bottom of the hanger main girder 8, the two first rollers are connected and arranged at the first end of the bottom of the hanger main girder 8, the two second rollers are connected and arranged at the end of the bottom of the hanger main girder 8 away from the first rollers, and the connection line between the first roller and the second roller extends along the direction of casting the box girder;

[0045] The first slide rail group includes a fourth slide rail, the fourth slide rail is an I-beam rail, and the I-beam rail is selected as the fourth slide rail. The flanges on both sides of the bottom of the I-beam rail are fixed on the box beam surface through a pressing sheet 4;

[0046] The two first rollers are rotatably connected to the bottom end of the hanger main truss, and are respectively placed in the two slots on both sides of the fourth slide rail (I-beam rail), and are slidably connected to the slots of the fourth slide rail (I-beam rail). The two second rollers are rotatably connected to the bottom end of the hanger main truss, and are respectively placed in the two slots of the fourth slide rail (I-beam rail), and are slidably connected to the slots of the fourth slide rail (I-beam rail), so that the two first rollers and the two second rollers at the bottom end of the hanger main truss 8 can be slidably set in the slots of the fourth slide rail (I-beam rail).

[0047] The fifth slide rail in the second slide rail group is an I-beam rail, and two pressing plates 4 are respectively pressed on both sides of the lower flange of the fifth slide rail (I-beam rail); among the two third rollers, one third roller is slidably connected to the top of the fifth slide rail (I-beam rail) and is arranged on the same straight line with the first roller, and the other third roller is slidably connected to the top of the fifth slide rail (I-beam rail) and is arranged on the same straight line with the second roller. The connecting line of the two third rollers extends along the casting direction of the box girder and is arranged parallel to the connecting line of the two first rollers and the two second rollers; one of the third rollers is driven to rotate by the driving motor on the hanger main truss 8.

[0048] Among them, the pressing plate 4 is welded by steel plates with a certain thickness. Bolt holes are provided on the pressing plate 4, so that the pressing plate 4 can be sleeved on the anchor bolts 6 and tightened with nuts to press it on the I-beam, ensuring that the I-beam is accurately positioned, firm and reliable, and can withstand the weight of the spray maintenance system.

[0049] Example 4

[0050] A method for installing a self-circulating slide rail is the method for installing a self-circulating slide rail provided in Example 1, wherein a plurality of slide rail groups are provided, and the installation method comprises the following steps:

[0051] S1. After the first section of the box girder is cast, the first slide rail 1 and the second slide rail 2 of the first slide rail group are respectively clamped with the anchor bars of the first section of the box girder surface through the pressing plate 4, and the third slide rail 3 is detachably connected to the first section of the box girder surface. Then, the first slide rail 1 of the second slide rail group is clamped with the anchor bars of the first section of the box girder surface through the pressing plate 4, and is detachably connected to the first slide rail 1 of the first slide rail group through the connecting piece 5. The second slide rail 2 of the second slide rail group is clamped with the second slide rail 2 of the first slide rail group through the pressing plate 4 and the anchor bars of the first section of the box girder surface, and is detachably connected to the second slide rail 2 of the first slide rail group through the connecting piece 5. The third slide rail 3 of the second slide rail group is detachably connected to the third slide rail 3 of the first slide rail group through the connecting piece 5, and is detachably connected to the first section of the box girder surface, and so on, to complete the connection of multiple slide rail groups with the first section of the box girder;

[0052] S2. After the second section of the box girder is cast, the first slide rail 1 of the first slide rail group is disassembled from the first slide rail 1 of the second slide rail group, and is detachably connected to the first slide rail 1 of the last slide rail group through the connecting piece 5, and is clamped with the anchor bar of the second section of the box girder surface through the pressing piece 4. After the second slide rail 2 of the first slide rail group is disassembled from the second slide rail 2 of the second slide rail group, it is detachably connected to the second slide rail 2 of the last slide rail group through the connecting piece 5, and is clamped with the anchor bar of the second section of the box girder surface through the pressing piece 4. After the third slide rail 3 of the first slide rail group is disassembled from the third slide rail 3 of the second slide rail group, it is detachably connected to the third slide rail 3 of the last slide rail group through the connecting piece 5, and is detachably connected to the second section of the box girder surface;

[0053] S3. After the casting of the third section of the box girder is completed, the first slide rail 1 of the second slide rail group is removed from the first slide rail 1 of the third slide rail group, and is detachably connected to the first slide rail 1 of the first slide rail group through the connecting piece 5, and is clamped with the anchor bar of the third section of the box girder surface through the pressing plate 4. After the second slide rail 2 of the second slide rail group is removed from the second slide rail 2 of the third slide rail group, it is detachably connected to the second slide rail 2 of the first slide rail group through the connecting piece 5, and is clamped with the anchor bar of the third section of the box girder surface through the pressing plate 4. After the third slide rail 3 of the second slide rail group is removed from the third slide rail 3 of the third slide rail group, it is detachably connected to the third slide rail 3 of the first slide rail group through the connecting piece 5, and is detachably connected to the third section of the box girder surface, and so on. Multiple slide rail groups move forward alternately in sequence along the casting direction of the box girder.

[0054] During installation, the elevations of the first slide rail 1, the second slide rail 2, and the third slide rail 3 are ensured to be consistent. As the box girder is cast, the first slide rail 1, the second slide rail 2, and the third slide rail 3 move forward alternately at the same time, the hanger main truss 8 slides once, and each slide rail group moves one section from back to front.

[0055] Example 5

[0056] This embodiment is based on the embodiment 4, taking the case where two sets of slide rails are provided as an example, and the specific installation method is as follows:

[0057] S1. After the first section of the box girder is cast, the first slide rail 1 and the second slide rail 2 of the first slide rail group are respectively clamped with the anchor bars of the first section of the box girder surface through the pressing plate 4, and the third slide rail 3 is detachably connected to the first section of the box girder surface. Then, the first slide rail 1 of the second slide rail group is clamped with the anchor bars of the first section of the box girder surface through the pressing plate 4, and is detachably connected to the first slide rail 1 of the first slide rail group through the connecting piece 5. The second slide rail 2 of the second slide rail group is clamped with the second slide rail 2 of the first slide rail group through the pressing plate 4 and the anchor bars of the first section of the box girder surface, and is detachably connected to the second slide rail 2 of the first slide rail group through the connecting piece 5. The third slide rail 3 of the second slide rail group is detachably connected to the third slide rail 3 of the first slide rail group through the connecting piece 5, and is detachably connected to the first section of the box girder surface, and so on, to complete the connection of multiple slide rail groups with the first section of the box girder;

[0058] S2. After the second section of the box girder is cast, the tail end of the first slide rail 1 of the first slide rail group is disassembled from the head end of the first slide rail 1 of the second slide rail group, and is detachably connected to the tail end of the first slide rail 1 of the second slide rail group through the connecting piece 5, and is clamped with the anchor bar of the second section of the box girder surface through the pressing piece 4. After the tail end of the second slide rail 2 of the first slide rail group is disassembled from the head end of the second slide rail 2 of the second slide rail group, it is detachably connected to the tail end of the second slide rail 2 of the second slide rail group through the connecting piece 5, and is clamped with the anchor bar of the second section of the box girder surface through the pressing piece 4. After the tail end of the third slide rail 3 of the first slide rail group is disassembled from the head end of the third slide rail 3 of the second slide rail group, it is detachably connected to the tail end of the third slide rail 3 of the second slide rail group through the connecting piece 5, and is detachably connected to the second section of the box girder surface;

[0059] S3. After the casting of the third section of the box girder is completed, the tail end of the first slide rail 1 of the second slide rail group is removed from the head end of the first slide rail 1 of the first slide rail group, and is detachably connected to the tail end of the first slide rail 1 of the first slide rail group through the connecting piece 5, and is clamped with the anchor bar of the third section of the box girder surface through the pressing plate 4. After the tail end of the second slide rail 2 of the second slide rail group is removed from the head end of the second slide rail 2 of the first slide rail group, it is detachably connected to the tail end of the second slide rail 2 of the first slide rail group through the connecting piece 5, and is clamped with the anchor bar of the third section of the box girder surface through the pressing plate 4. After the tail end of the third slide rail 3 of the second slide rail group is removed from the head end of the first slide rail 1 of the first slide rail group, it is detachably connected to the tail end of the third slide rail 3 of the first slide rail group through the connecting piece 5, and is detachably connected to the third section of the box girder surface, and so on, so that the two slide rail groups move forward alternately in sequence along the casting direction of the box girder.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A self-circulating slide rail, characterized in that: include: Two slide rail units are arranged above the box beam, the two slide rail units are symmetrically arranged about the center line of the box beam, and are detachably connected to the box beam; each of the slide rail units includes a plurality of slide rail groups; the plurality of slide rail groups are connected in sequence and extend along the casting direction of the box beam; Among them, during construction, after the second section of the box girder is cast, the first slide rail group is removed from the second slide rail group and connected to the last slide rail group. After the third section of the box girder is cast, the second slide rail group is removed from the third slide rail group and connected to the first slide rail group. And so on. Multiple slide rail groups move alternately in the casting direction of the box girder, and the hanger main truss is slidably connected to the slide rail group to enable the hanger main truss to slide along the casting direction of the box girder.

2. The self-circulating slide rail according to claim 1, characterized in that: Two adjacent slide rail groups are detachably connected via a connecting piece; each of the slide rail groups includes a first slide rail group and a second slide rail group; the first slide rail group includes a first slide rail and a second slide rail arranged in parallel with each other; the slide rail of the first slide rail and the slide rail of the second slide rail are arranged opposite to each other; A pressing plate is provided above the first slide rail; the pressing plate is detachably connected to the anchoring bar of the box beam to press the first slide rail against the surface of the box beam; a pressing plate is provided above the second slide rail; the pressing plate is detachably connected to the anchoring bar of the box beam to press the second slide rail against the surface of the box beam; The second slide rail group includes a third slide rail; the third slide rail and the second slide rail are arranged parallel to each other and are detachably connected to the box beam surface; Among them, multiple first slide rails connected in sequence, multiple second slide rails connected in sequence, and multiple third slide rails connected in sequence all extend along the casting direction of the box girder; two adjacent first slide rails, two adjacent second slide rails, and two adjacent third slide rails are all detachably connected through the connecting piece.

3. The self-circulating slide rail according to claim 2, characterized in that: The first slide rail, the second slide rail, and the third slide rail have the same elevation.

4. A method for installing a self-circulating slide rail, characterized in that: The method for installing the self-circulating slide rail according to any one of claims 1 to 3 comprises the following steps: S1, after the first section of the box girder is cast, the first slide rail and the second slide rail of the first slide rail group are respectively clamped with the anchor bars of the first section of the box girder surface through the pressing plate, and the third slide rail is detachably connected to the first section of the box girder surface, and then the first slide rail of the second slide rail group is clamped with the anchor bars of the first section of the box girder surface through the pressing plate, and is detachably connected to the first slide rail of the first slide rail group through a connecting piece, the second slide rail of the second slide rail group and the second slide rail of the first slide rail group are clamped with the anchor bars of the first section of the box girder surface through the pressing plate, and are detachably connected to the second slide rail of the first slide rail group through a connecting piece, the third slide rail of the second slide rail group is detachably connected to the third slide rail of the first slide rail group through a connecting piece, and is detachably connected to the first section of the box girder surface, and so on, to complete the connection of multiple slide rail groups with the first section of the box girder; S2, after the second section of the box girder is cast, the first slide rail of the first slide rail group is disassembled from the first slide rail of the second slide rail group, and is detachably connected to the first slide rail of the last slide rail group through a connecting piece, and is clamped with the anchor bar of the second section of the box girder surface through a pressing piece; the second slide rail of the first slide rail group is disassembled from the second slide rail of the second slide rail group, and is detachably connected to the second slide rail of the last slide rail group through a connecting piece, and is clamped with the anchor bar of the second section of the box girder surface through a pressing piece; the third slide rail of the first slide rail group is disassembled from the third slide rail of the second slide rail group, and is detachably connected to the third slide rail of the last slide rail group through a connecting piece, and is detachably connected to the second section of the box girder surface; S3. After the casting of the third section of the box girder is completed, the first slide rail of the second slide rail group is removed from the first slide rail of the third slide rail group, and is detachably connected to the first slide rail of the first slide rail group through a connecting piece, and is clamped with the anchor ribs of the third section of the box girder surface through a pressing plate. After the second slide rail of the second slide rail group is removed from the second slide rail of the third slide rail group, it is detachably connected to the second slide rail of the first slide rail group through a connecting piece, and is clamped with the anchor ribs of the third section of the box girder surface through a pressing plate. After the third slide rail of the second slide rail group is removed from the third slide rail of the third slide rail group, it is detachably connected to the third slide rail of the first slide rail group through a connecting piece, and is detachably connected to the third section of the box girder surface, and so on. Multiple slide rail groups move forward alternately in sequence along the casting direction of the box girder.

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