Non-stop in-situ reinforcing structure for rail transit and construction method

Abstract

The invention provides a non-stop in-situ reinforcing structure for rail transit and a construction method. Two reinforcing pieces correspond to rails on the two sides of a rail respectively and are connected with the rails in a detachable mode; the retaining walls are located on the two sides of the to-be-constructed area and formed through grouting of grouting pipes extending from top to bottom. The supporting components are located in a pre-dug channel on the inner side of the retaining wall, the two supporting components correspond to two rails of a rail respectively, and supporting pieces are arranged at the upper ends of the supporting components and penetrate through a soil layer upwards to be connected with transverse plates corresponding to the rail. The U-shaped clamping pieces are upwards clamped on the two sides of the reinforcing pieces and the rail, and the bottoms of the U-shaped clamping pieces are detachably fixed to the transverse plate. By arranging the structures such as the reinforcing pieces, the retaining walls, the supporting components and the U-shaped clamping pieces, a complete reinforcing system is formed, the stability and the bearing capacity of the track can be effectively enhanced, the whole reinforcing structure can better adapt to the load change of the track, and the track is prevented from displacing, deforming or sinking in the construction process.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit reinforcement, and particularly relates to a non-stop in-situ reinforcement structure and construction method for rail transit. Background Art

[0002] During road planning and construction, there are many situations where new roads and culverts cross existing rail transit lines; when a new road is built to an existing railway, a culvert generally needs to be set up to form a three-dimensional traffic. During the construction process, the overhead track method or the steel beam method needs to be adopted to reinforce the existing track. Currently, the relatively mature construction method is generally jacking construction. However, jacking construction generally requires large equipment for assistance and is difficult to apply in rural areas or small roads. Moreover, traditional reinforcement construction methods often require the suspension of rail transit lines, which not only brings great inconvenience to passengers' travel but also causes great trouble to culvert construction.

[0003] Therefore, an improved technical solution is needed to address the deficiencies of the above-mentioned existing technologies. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned existing technologies. The present invention provides a non-stop in-situ reinforcement structure and construction method for rail transit.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A non-stop in-situ reinforcement structure for rail transit, comprising:

[0007] Reinforcement members, two of the reinforcement members respectively correspond to the tracks on both sides of the rail and are connected to the tracks in a detachable manner;

[0008] Retaining walls, the retaining walls are located on both sides of the area to be constructed and are formed by grouting through grouting pipes extending from top to bottom;

[0009] Support members, the support members are located in the pre-excavated channels inside the retaining walls, two of the support members respectively correspond to the two tracks of the rail, the upper ends of the support members are provided with support pieces, and the support pieces extend upward through the soil layer and are connected to a cross plate corresponding to the rail;

[0010] U-shaped fasteners, the U-shaped fasteners are upwardly clamped on both sides of the reinforcement members and the rails, and the bottom of the U-shaped fasteners is detachably fixed to the cross plate.

[0011] Preferably, a concrete wall is provided inside the retaining wall, and the concrete wall and the retaining wall are consolidated into one body by pouring.

[0012] Preferably, a lath groove is provided inside the retaining wall, and the lath grooves are distributed in a grid pattern inside the retaining wall, and the bottom of the lath groove extends to the grouting pipe;

[0013] Reinforcing bars are provided outside the steel bar framework of the concrete wall corresponding to the lath grooves, and the reinforcing bars extend along the corresponding lath grooves and are fixedly connected to the grouting pipes.

[0014] Preferably, the support member includes a main rod and a top rod. An installation groove corresponding to the main rod is provided on the side wall of the retaining wall. An inclined slope is provided at the bottom of the installation groove. A bend corresponding to the inclined slope is provided at the lower end of the main rod; the top rod is connected to the main rod through a hinge rod, and the lower end of the top rod is slidably assembled at the bend of the main rod, and the support member is supported at the upper end of the top rod;

[0015] A support rod, one end of the support rod is supported on the inner wall of the pre-excavated passage, and the other end abuts against the inner side of the top rod;

[0016] In response to the support rod pushing the top rod towards the main rod, the top rod slides along the bend of the main rod and applies prestress upwards to the support member.

[0017] Preferably, the support member is correspondingly connected to a formwork corresponding to the concrete wall. Reinforcing bar joints extending out of the formwork are provided above and below the steel bar framework of the concrete wall.

[0018] Preferably, the main rod is a channel steel with an opening facing the top rod.

[0019] Preferably, a cross beam corresponding to the top plate of the pre-excavated passage is provided at the top of the two support members.

[0020] A construction method for an in-situ reinforcement structure for rail transit without shutdown includes the following steps:

[0021] Connect two reinforcement members to the tracks on both sides of the rails;

[0022] ; Drive grouting pipes on both sides of the area to be constructed by grouting, and form a retaining wall by grouting. The grouting range is adapted to the height of the support member;

[0023] Construct a pre-excavated passage inside the retaining wall, install support members in the pre-excavated passage, and the two support members respectively correspond to the two tracks of the rails;

[0024] Open a hole under the track to install the support member, support the support member on the upper end of the support member, and a cross plate corresponding to the rail is provided at the upper end of the support member;

[0025] Snap the U-shaped fasteners upwards on both sides of the reinforcement member and the rail, and fixedly connect them to the cross plate.

[0026] Preferably, installation grooves are formed at positions corresponding to the two tracks at both ends of the retaining wall. An inclined slope is reserved at the bottom of the installation groove. After installing the main rod and the top rod correspondingly, the top rod is pushed towards the main rod through the support rod, so that the top rod slides along the bend of the main rod and applies prestress to the support member upwards.

[0027] Preferably, a pull groove is provided inside the retaining wall. After fixing the connecting bars outside the steel bar framework of the concrete wall to the grouting pipes, formwork is installed, and the concrete wall is formed by pouring.

[0028] Steel bar joints extending out of the formwork are provided above and below the steel bar framework of the concrete wall. After the concrete wall reaches the preset strength, the support rods are removed and the construction area is completely excavated. Reinforcing bars for the top plate and the bottom plate are respectively arranged above and below the construction area, and the reinforcing bars for the top plate and the bottom plate are respectively connected to the corresponding steel bar joints. In this way, they are consolidated into one body with the concrete wall by pouring, and the reinforcement members and U-shaped clamping members are removed after the culvert is formed.

[0029] Beneficial effects: The present invention can carry out in-situ reinforcement construction without stopping the operation of the rail transit, avoiding the economic losses and inconvenience to passengers caused by the suspension of operation. By setting up structures such as reinforcement members, retaining walls, support members and U-shaped clamping members, a complete reinforcement system is formed, which can effectively enhance the stability and bearing capacity of the track, enable the entire reinforcement structure to better adapt to the load changes of the track, and prevent the track from shifting, deforming or sinking during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The schematic diagrams in the specification drawings forming a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0031] Figure 1 It is a schematic diagram of the construction of the retaining wall in the specific embodiment provided by the present invention;

[0032] Figure 2 It is a schematic diagram of the installation of the support member in the specific embodiment provided by the present invention;

[0033] Figure 3 It is a schematic diagram of the pouring of the concrete wall in the specific embodiment provided by the present invention;

[0034] Figure 4 It is a schematic diagram of the pouring of the culvert in the specific embodiment provided by the present invention.

[0035] In the figure: 1, track; 2, retaining wall; 3, grouting pipe; 4, main rod; 5, top rod; 6, support rod; 7, hinge rod; 8, support member; 9, U-shaped clamping member; 10, cross plate; 11, concrete wall; 12, steel bar joint; 13, culvert; 14, reinforcement member. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0037] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0039] like Figures 1-4 As shown, a non-stop in-situ reinforcement structure for rail transit includes a U-shaped clamp 9, a supporting member 、 The retaining wall 2 and the reinforcement 14, wherein the two reinforcements 14 correspond to the tracks 1 on both sides of the rails respectively, the reinforcement 14 is an I-beam extending side by side with the rails, the reinforcement 14 is located on the outside of the track 1, and is connected in a detachable manner by bolts to fix the track 1. Furthermore, the length of the reinforcement 14 is adapted to the length of the area to be constructed, and a plurality of cross arms are provided on the reinforcement 14 corresponding to the area to be constructed. The cross arms pass under the track 1 and are evenly distributed in the length direction of the reinforcement 14, and the cross arms are fixed to the reinforcement 14 by bolts.

[0040] The retaining wall 2 is used to provide initial support for the track 1. Specifically, the retaining wall 2 is located on both sides of the area to be constructed. The retaining wall 2 is formed by grouting through a grouting pipe extending from top to bottom. The grouting pipe is a metal pipe, and its lower end extends below the elevation of the lower edge of the culvert. The grouting pipe is provided with a grouting hole in the part below the elevation of the upper edge of the culvert, thereby forming a retaining wall 2 on the bottom foundation of the track 1 by grouting. On the one hand, it can support the track 1, and on the other hand, it can avoid the intrusion of soil pressure on both sides of the culvert during excavation, thereby ensuring the stability of the bottom foundation of the track 1.

[0041] After the grouted concrete reaches the preset strength, the excavation of the pre-excavated channel is carried out. The pre-excavated channel is excavated by the three-step or two-step method. The width should be able to meet the transportation of workers and materials or the installation of the steel reinforcement cage and support members in the pre-excavated channel, generally 1 - 1.5 m. The support members are spliced by channel steel and are installed in an assembled form, so as to reduce the use of space and minimize the width of the pre-excavated channel to the greatest extent. The support members are located in the pre-excavated channel inside the retaining wall 2. The two support members respectively correspond to the two tracks 1 of the railway. There is a support member 8 at the upper end of the support member. The support member 8 can be a steel pipe. The support member 8 passes upward through the soil layer and is connected with a cross plate 10 corresponding to the railway track. There is a sleeve connected to the support member 8 by threads below the cross plate 10. The upper end of the sleeve is rotatably connected to the cross plate 10. Grooves corresponding to the cross plate 10 and the U-shaped fasteners 9 are chiseled on the basis below the track 1. The corresponding perforations of the support member 8 can be made from bottom to top, and the perforations extend to the excavated grooves. The U-shaped fasteners 9 are snapped upward on both sides of the reinforcement member 14 and the railway track. The bottom of the U-shaped fastener 9 is detachably fixed to the cross plate 10 by bolts.

[0042] In this embodiment, the density of the grouting holes on the side of the grouting pipe far from the culvert is greater than that on the side close to the culvert, so as to ensure that the retaining wall 2 extends farther outward. The multiple grouting pipes are distributed at intervals transversely to the railway track, so as to form a continuous retaining wall 2 through grouting.

[0043] In an alternative embodiment, there is a concrete wall 11 inside the retaining wall 2. On the one hand, the concrete wall 11 enhances the support capacity during the excavation process, and on the other hand, it is used as the side wall of the culvert. The concrete wall 11 and the retaining wall 2 are consolidated into one body by pouring.

[0044] In this embodiment, a grooving is made on the inner side of the retaining wall 2 in the pre-excavated channel. The width of the grooving is adapted to the width of the grouting pipe. The grooving is distributed in a grid pattern on the inner side of the retaining wall 2. The bottom of the grooving extends to the grouting pipe and is used to connect the steel reinforcement cage. The main body of the steel reinforcement cage is a cuboid adapted to the concrete wall 11. There are connecting bars corresponding to the grooving on the outer side of the steel reinforcement cage of the concrete wall 11. The multiple connecting bars are in a grid pattern corresponding to the grooving. The connecting bars extend along the corresponding grooving and are fixedly connected to the grouting pipe by welding, so as to be consolidated with the retaining wall 2 after pouring.

[0045] In an optional embodiment, the supporting member includes a main rod 4 and a top rod 5. The side wall of the retaining wall 2 is provided with a mounting groove corresponding to the main rod 4. The width of the mounting groove is adapted to the width of the main rod 4. The depth of the mounting groove can extend to the grouting pipe. The two can be welded and fixed. The bottom of the mounting groove is provided with an inclined slope. The elevation of the upper end of the inclined slope is below the elevation of the upper surface of the lower wall of the culvert. The lower surface of the inclined slope extends to the elevation of the lower surface of the lower wall of the culvert. The lower end of the main rod 4 is provided with a bend corresponding to the inclined slope, so that it can be clamped in the mounting groove. The top rod 5 is connected by a hinged rod 7. Connected to the main rod 4, the end of the hinged rod 7 close to the top rod 5 is tilted upward, so that it can move upward under the push, and the slope of the bend is adapted to the displacement trajectory of the lower end of the top rod 5. The hinged rod 7 can be 1 or 2, and the main rod 4 and the top rod 5 are made parallel by hinge. The lower end of the top rod 5 is slidably assembled at the bend of the main rod 4, and the support member 8 is supported at the upper end of the top rod 5; one end of the support rod 6 is supported on the inner wall of the pre-dug channel, and a support plate corresponding to the support rod 6 is provided in the pre-dug channel, and the other end of the support rod 6 is in contact with the inner side of the top rod 5.

[0046] During actual construction, two supporting members correspond to two tracks 1. The supporting members are installed first and then the grooves are drawn and the steel skeleton is tied. The support rod 6 includes a stud and a screw sleeve. The two ends of the stud are connected to the screw sleeve through reverse threads, so that the support top rod 5 and the pre-dug channel can be extended. The support rod 6 pushes the top rod 5 toward the main rod 4 under the action of the thread rotation, so that the top rod 5 slides along the bend of the main rod 4. At this time, prestress can be applied upward to the support member 8 to ensure the stability of the track 1.

[0047] In this embodiment, there are two support rods 6, which are respectively located at the two ends of the top rod 5, so as not to affect the normal passage of people and material transportation. The supporting member is connected to the corresponding concrete wall template, the template is located on the inner side of the top rod, and the template at the corresponding position is fixed to the top rod by bolts. The template can be a wooden template or a steel template, which is installed after the steel skeleton is tied. The template of the concrete wall 11 is formed by splicing, and end templates are provided on both sides of the corresponding rails. There are no excessive restrictions on the template here. As the template is installed, the template is supported by square timber. Steel bar joints 12 extending out of the template are provided above and below the steel skeleton of the concrete wall 11. The steel bar joints 12 are adapted to the thickness of the culvert top plate or bottom plate and the width on both sides of the rails, so that the culvert top plate and bottom plate can be consolidated into one with the concrete wall 11.

[0048] The main pole 4 is a channel steel with an opening toward the top pole 5, and the top pole 5 is a square steel corresponding to the channel steel. A support beam corresponding to the bottom of the pre-excavated channel can be set at the bottom of the main pole 4 to ensure stability. In this embodiment, the upper surface elevation of the culvert bottom plate is 10-20 cm above the bent part.

[0049] At the top of the two support members, there is a cross beam corresponding to the roof slab of the pre-excavated channel. The two ends of the cross beam are connected to the roof slab by bolts or welding. There are multiple screw rods extending longitudinally on the cross beam, and a supporting plate is provided at the upper end of the screw rod to support the roof slab of the pre-excavated channel.

[0050] For the above reinforcement structure, the present application also provides a construction method for the in-situ reinforcement structure of rail transit without suspension, so as to form a concrete culvert in a cast-in-place form, without the need for large jacking equipment, and has strong anti-interference ability to ensure the existing line without suspension.

[0051] It includes the following steps:

[0052] Perform measurement and lofting, draw the contour lines of the pouring pipe, pre-excavated channel, cross beam and culvert with lime. Hoist the two reinforcement members 14 into place by a crane, connect the reinforcement members 14 to the track 1 on both sides of the rail by bolts, then excavate the insertion grooves corresponding to the cross beam, and fix the cross beam and the reinforcement members 14 after the cross beam is in place.

[0053] Install the grouting pipes by means of an electric hammer or drilling. The number of grouting holes on both sides of the grouting pipe is different (first, arrange the grouting holes in a plum blossom shape evenly on the outside of the grouting pipe, and then arrange multiple grouting holes evenly on one of the normal lines of the grouting pipe, so as to form a difference in the density of the grouting holes on both sides). Orient the side with a larger number towards the side away from the culvert. Install the grouting pipes on both sides of the construction area to be constructed by grouting. Multiple grouting pipes are evenly distributed in the width direction of the rail, so that the grouting ranges of two adjacent grouting pipes intersect with each other. Form a retaining wall 2 by grouting, and the grouting range is adapted to the height of the support member.

[0054] Construct the pre-excavated channel inside the retaining wall 2. The pre-excavated channel is excavated by the three-step or two-step method according to the soil conditions. Install the support members in the pre-excavated channel. The two support members respectively correspond to the two tracks 1 of the rail. Open holes below the track 1 to install the support members 8. There is a groove corresponding to the upper end of the support member 8 below the track 1 for installing the cross plate 10 and the U-shaped clamping member 9. Thread the support member 8 with the screw sleeve below the cross plate 10. The width of the cross plate 10 is adapted to the U-shaped clamping member 9. Clamp the U-shaped clamping member 9 upwards on both sides of the reinforcement member 14 and the rail. The lower end of the support member 8 supports on the upper end of the support member.

[0055] In an alternative embodiment, the support member can be installed after the pre-excavated channel is excavated to the position of the support member. Specifically, installation grooves are formed at the positions corresponding to the two tracks 1 at both ends of the retaining wall 2, and an inclined slope is reserved at the bottom of the installation groove. First, the main rod 4 is inserted into the installation groove. After the main rod 4 and the top rod 5 are correspondingly installed, the support rod 6 and the U-shaped fastener 9 are installed. After the U-shaped fastener 9 is installed, the sleeve below the cross plate 10 is rotated to make the support member 8 press tightly against the top rod 5. Then, the top rod 5 is pushed towards the main rod 4 through the support rod 6, so that the top rod 5 slides along the bend of the main rod 4 and applies prestress upwards to the support member 8.

[0056] In this embodiment, a pulling groove is provided inside the retaining wall 2, and the pulling groove is set after the construction of the support member. The pulling groove is formed into a grid shape by transverse grooves and longitudinal grooves. The number of longitudinal grooves is adapted to the number of grouting pipes, so as to correspond to the grouting pipes. The number of transverse grooves can be 2-5 evenly distributed along the longitudinal direction, and the specific number is not limited.

[0057] The connecting bars on the outer side of the steel bar framework of the concrete wall 11 are welded and fixedly connected to the grouting pipes, and then the formwork is installed. Pouring holes are provided on the formwork, and the concrete wall 11 is formed by pouring. After the concrete wall 11 reaches the preset strength, the excavation of the culvert main body is carried out. The culvert main body is excavated by the three-step method. Reinforcing bar joints 12 extending out of the formwork are provided above and below the steel bar framework of the concrete wall 11. The reinforcing bar joints 12 are used to connect the top plate and bottom plate steel bars of the culvert. After the concrete wall 11 reaches the preset strength, the support rod 6 is removed and the construction area (culvert main body) is completely excavated. Then, the top plate and bottom plate steel bars are respectively arranged above and below the construction area, and a full hall support is set to support the formwork of the corresponding top plate and bottom plate. The top plate and bottom plate steel bars are respectively connected to the corresponding reinforcing bar joints 12, so as to be consolidated with the concrete wall 11 into a whole through pouring. After the concrete solidifies, the culvert 13 is formed. Then, the reinforcement member 14 and the U-shaped fastener 9 are removed.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are within the scope of the claims of the present invention awaiting approval.

Claims

1. An in-situ reinforcement structure for rail transit without stopping operation, characterized in that Including: Reinforcing members, two of the reinforcing members respectively correspond to the tracks on both sides of the railway track and are connected to the tracks in a detachable manner; Retaining walls, the retaining walls are located on both sides of the construction area to be constructed and are formed by grouting through grouting pipes extending from top to bottom; Support members, the support members are located in the pre-excavated channels inside the retaining walls, two of the support members respectively correspond to the two tracks of the railway track, a support is provided at the upper end of the support member, and the support extends upward through the soil layer and is connected with a cross plate corresponding to the railway track; U-shaped fasteners, the U-shaped fasteners are upwardly clamped on both sides of the reinforcing members and the railway track, and are detachably fixed to the cross plate at the bottom of the U-shaped fasteners.

2. The in-situ reinforcement structure for rail transit according to claim 1, characterized in that A concrete wall is provided inside the retaining wall, and the concrete wall and the retaining wall are consolidated into one body by pouring.

3. The in-situ reinforcement structure for rail transit according to claim 2, characterized in that, A grooving is provided inside the retaining wall, the grooving is distributed in a grid shape inside the retaining wall, and the bottom of the grooving extends to the grouting pipe; Connecting bars corresponding to the grooving are provided on the outer side of the steel bar framework of the concrete wall, the connecting bars extend along the corresponding grooving and are fixedly connected with the grouting pipe.

4. The in-situ reinforcement structure for rail transit according to claim 2, characterized in that, The support member includes a main rod and a top rod, an installation groove corresponding to the main rod is provided on the side wall of the retaining wall, an inclined slope is provided at the bottom of the installation groove, and a bending corresponding to the inclined slope is provided at the lower end of the main rod; the top rod is connected to the main rod through a hinge rod, the lower end of the top rod is slidably assembled at the bending of the main rod, and the support is supported at the upper end of the top rod; Support rods, one end of the support rods is supported on the inner wall of the pre-excavated channel, and the other end abuts against the inner side of the top rod; In response to the support rod pushing the top rod towards the main rod, the top rod slides along the bending of the main rod and applies prestress upward to the support.

5. The in-situ reinforcement structure for rail transit according to claim 2, wherein The support member is correspondingly connected with a formwork corresponding to the concrete wall, and reinforcing bar joints extending out of the formwork are provided above and below the steel bar framework of the concrete wall.

6. The in-situ reinforcement structure for rail transit according to claim 4, characterized in that The main rod is a channel steel with an opening facing the top rod.

7. The in-situ reinforcement structure for rail transit according to claim 1, characterized in that, A cross beam corresponding to the top plate of the pre-excavated channel is provided at the top of the two support members.

8. A construction method for an in-situ reinforcement structure without stopping operation for rail transit, characterized in that, Including the following steps: Connect two reinforcing members to the tracks on both sides of the railway track; Drive grouting pipes on both sides of the construction area to be constructed by grouting, and form retaining walls by grouting, and the grouting range is adapted to the height of the support member; Construct a pre-excavated channel inside the retaining wall, and install support members in the pre-excavated channel, and the two support members respectively correspond to the two tracks of the railway track; Open a hole below the track to install the support, support the support on the upper end of the support member, and a cross plate corresponding to the railway track is provided at the upper end of the support; Clamp the U-shaped fasteners upward on both sides of the reinforcing members and the railway track, and fixedly connect them to the cross plate.

9. The construction method of the in-situ reinforcement structure for rail transit without shutdown according to claim 8, characterized in that, Installation grooves are opened at positions corresponding to the two tracks at both ends of the retaining wall, an inclined slope is reserved at the bottom of the installation groove, and after the main rod and the top rod are correspondingly installed, the support rod is used to push the top rod towards the main rod, so that the top rod slides along the bending of the main rod and applies prestress upward to the support.

10. The method for constructing an in-situ reinforcement structure for rail transit without stopping operation according to claim 9, characterized in that: A draw groove is provided inside the retaining wall. After fixedly connecting the connecting bars outside the steel bar framework of the concrete wall with the grouting pipes, formwork is installed, and the concrete wall is formed by pouring. Reinforcing bar joints extending out of the formwork are provided above and below the steel bar framework of the concrete wall. After the concrete wall reaches the preset strength, the support rods are removed and the construction area is completely excavated. Top plate steel bars and bottom plate steel bars are respectively arranged above and below the construction area, and the top plate steel bars and the bottom plate steel bars are respectively connected to the corresponding reinforcing bar joints. In this way, they are consolidated into one body with the concrete wall by pouring. After the culvert is formed, the reinforcement members and U-shaped clamping members are removed.

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