Method for installing large-diameter reinforced concrete pipe

Abstract

The invention discloses a method for installing a large-diameter reinforced concrete pipe, which belongs to the technical field of pipeline construction, and comprises the following steps: setting a positioning lofting pipeline side line on the surface of pipe base concrete; at least two limiting parts are vertically driven into the side line of the positioning lofting pipeline, the two limiting parts are parallel to each other, and the height of the limiting parts is at least the same as the height of the circle center of the placed reinforced concrete pipe on the pipe base; a rope is hung on the top of each limiting part and is tensioned and fixed; hoisting a forklift into the groove, hoisting the reinforced concrete pipes into the groove section by section by using a crane, placing the reinforced concrete pipes in front of the forklift, mounting and adjusting the reinforced concrete pipes section by section along the axial direction of the rope by using the forklift by taking the rope as a standard, so that the outer walls of the reinforced concrete pipes are tightly attached to the rope, aligning the two reinforced concrete pipes and reserving a gap, and then fixing the reinforced concrete pipes; formworks are erected on the peripheries of the aligned connectors of the two reinforced concrete pipes, and concrete is cast in place. The device can quickly align the reinforced concrete pipe, saves manpower, and is high in alignment accuracy.

Description

Technical Field

[0001] This application relates to the technical field of pipeline construction, and particularly to a method for installing large-diameter reinforced concrete pipes. Background Art

[0002] With the rapid development of China's municipal process, small-diameter drainage pipes can no longer meet the drainage needs of large and medium-sized cities. Therefore, the installation of large-diameter reinforced concrete pipes has become particularly important.

[0003] In traditional construction of large-diameter reinforced concrete pipes, a crane is used to lower the pipes onto the trench bedding, and then a chain block or a jack is used to align and install the pipes. This method not only requires a large amount of labor and is time-consuming, but also has limited alignment efficiency and accuracy. Summary of the Invention

[0004] Embodiments of the present invention provide a method for installing large-diameter reinforced concrete pipes, which solves the problems in the prior art that during the butt joint installation of large-diameter reinforced concrete pipes, not only a large amount of labor is required, the speed is slow, but also the alignment efficiency and accuracy are limited. Embodiments of the present invention achieve rapid alignment, save manpower, and have high alignment accuracy.

[0005] Embodiments of the present invention provide a method for installing large-diameter reinforced concrete pipes, including the following steps:

[0006] Set the pipe foundation concrete to reach the design strength;

[0007] Set the positioning and lofting pipeline side lines on the surface of the pipe foundation concrete, and ensure that the positioning and lofting pipeline side lines are straight and parallel to the edge lines of the pipe foundation concrete in the placement direction of the reinforced concrete pipes;

[0008] Drive at least two limiting parts perpendicular to the positioning and lofting pipeline side lines on the positioning and lofting pipeline side lines. The multiple limiting parts are parallel to each other, and the height of the limiting parts is at least consistent with the center height of the placed reinforced concrete pipes on the pipe foundation; Hang wire ropes on the top of each limiting part and tighten and fix them;

[0009] Use a crane to lift a forklift into the trench, and use the crane to lift each section of the reinforced concrete pipe into the trench and place it in front of the forklift. Taking the wire rope as the standard, use the forklift to install and adjust each section of the reinforced concrete pipe along the axial direction of the wire rope, so that the outer wall of the reinforced concrete pipe is closely attached to the wire rope. Repeat the above process to complete the installation of multiple reinforced concrete pipes;

[0010] After aligning two adjacent reinforced concrete pipes and leaving a gap, formwork the periphery of the aligned interfaces of the two reinforced concrete pipes and cast concrete in situ.

[0011] In a possible implementation, each of the limiting parts is a steel drill rod, and each steel drill rod is set at an equal distance height to ensure that the position error distance between each steel drill rod and the edge line of the positioning and lofting pipeline is 0 - 0.5 cm; after the steel drill rods are driven into the pipe foundation concrete and wire ropes are set, ensure that the wire ropes are located on the placement side of the reinforced concrete pipe.

[0012] In a possible implementation, place the first reinforced concrete pipe on the pipe foundation concrete along the wire rope, and press it tightly against the wire rope, and set limiting structures on both sides of the first reinforced concrete pipe;

[0013] Place the limiting structures on both sides of the bottom of the first reinforced concrete pipe and extend axially outside the edge of the first reinforced concrete pipe;

[0014] When the forklift continues to place the second reinforced concrete pipe along the length direction of the wire rope, transport the second reinforced concrete pipe along the length direction of the wire rope to the limiting structure of the first reinforced concrete pipe, and align one end interface of the second reinforced concrete pipe with the first reinforced concrete pipe and leave a gap.

[0015] In a possible implementation, the limiting structure is an acute-angle support part, and the acute-angle support part includes an arc surface that supports the bottom of the reinforced concrete pipe, and the arc surface extends along the axial direction of the reinforced concrete pipe.

[0016] In a possible implementation, when aligning the interfaces of the second reinforced concrete pipe and the first reinforced concrete pipe, the forklift first adjusts the distance between the second reinforced concrete pipe and the length direction of the wire rope, and makes the second reinforced concrete pipe gradually approach the wire rope. After the second reinforced concrete pipe touches the wire rope, adjust the height of the second reinforced concrete pipe again so that the bottom surface of the reinforced concrete touches the pipe foundation concrete. Next, use the forklift to place the next reinforced concrete pipe using the same steps.

[0017] In a possible implementation, there is an interface ring around the edge part of the interface of each reinforced concrete pipe, and the outer diameter of the interface ring is smaller than the diameter of the periphery of the reinforced concrete pipe. When the two interfaces of the two reinforced concrete pipes are butted, the two interface rings are butted first. After the adjacent two interface rings are butted, a groove ring is formed, and finally concrete is poured at the groove ring.

[0018] In a possible implementation, a pouring mechanism is used to pour the gap between adjacent reinforced concrete pipes;

[0019] The pouring mechanism includes a first arc groove, a second arc groove and a third arc groove movably connected to the first arc groove. The axial widths of the first arc groove, the second arc groove and the third arc groove are at least equal to the width of the interface ring.

[0020] The second arc groove and the third arc groove are respectively movably sleeved at both ends of the first arc groove and can telescopically move on the first arc groove. The upper surfaces of the first arc groove, the second arc groove and the third arc groove are connected by a plurality of connecting rods.

[0021] During operation, the arc formed by the first arc groove, the second arc groove and the third arc groove is matched with the radian of the reinforced concrete pipe and placed in the gap between two adjacent reinforced concrete pipes. At this time, move the second arc groove and the third arc groove so that the second arc groove and the third arc groove approach and contact each other.

[0022] Pour concrete into the first arc groove, the second arc groove and the third arc groove. After the concrete gradually solidifies, move the second arc groove and the third arc groove. The second arc groove and the third arc groove retract along the outer side of the first arc groove, and then remove the first arc groove, that is, the first arc groove, the second arc groove and the third arc groove are all removed.

[0023] In a possible implementation manner, the diameter of the reinforced concrete pipe is dn1200mm - dn2500mm.

[0024] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0025] In the embodiments of the present invention, by first setting the positioning and lofting pipeline side line on the surface of the pipe foundation concrete to ensure that the positioning and lofting pipeline side line is straight, at least two limiting parts are vertically arranged at equal intervals on the positioning and lofting pipeline side line, and wire ropes are connected to the limiting parts. Then when placing the pipe foundation concrete, place the reinforced concrete pipes along the wire ropes and the positioning and lofting pipeline side line, and the reinforced concrete pipes can be aligned and connected more conveniently and quickly. That is, taking the positioning and lofting pipeline side line as a reference, then using a forklift to transport and dock the reinforced concrete pipes is convenient and fast. The thickness and caliber of all reinforced concrete pipes are the same. After two reinforced concrete pipes are connected, pour concrete to ensure the sealing performance of the connection position and the integrity of the connection between the two reinforced concrete pipes. The embodiments of the present invention solve the problems in the prior art that when constructing and docking large-diameter reinforced concrete pipelines, not only are there many construction workers, slow speed, and limited alignment efficiency and accuracy, but also achieve rapid alignment, save manpower, and have high alignment accuracy. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments of the present invention or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic flow chart of the installation method of large-diameter reinforced concrete pipes in the embodiments of the present invention;

[0028] Figure 2 It is a position relationship diagram of large-diameter reinforced concrete pipes, pipe foundation concrete, and the pipeline side line of positioning and lofting in the embodiments of the present invention;

[0029] Figure 3 It is a schematic structural diagram of the pouring mechanism in the embodiments of the present invention.

[0030] Icon: 1 - Reinforced concrete pipe; 2 - Steel rod; 3 - Pipe foundation concrete; 4 - String; 5 - Pouring mechanism; 51 - First arc groove; 52 - Second arc groove; 53 - Third arc groove. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, rather than all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installation", "connection", "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0033] Referring to Figures 1-3 as shown, the present invention discloses a method for installing large-diameter reinforced concrete pipes, comprising the following steps:

[0034] S1. Set the pipe foundation concrete to reach the designed strength;

[0035] S2. Set the positioning and lofting pipeline side lines on the surface of the pipe foundation concrete, and ensure that the positioning and lofting pipeline side lines are straight, and ensure that the positioning and lofting pipeline side lines are parallel to the edge lines of the pipe foundation concrete in the placing direction of the reinforced concrete pipes;

[0036] S3. Drive at least two limiting parts perpendicular to the positioning and lofting pipeline side lines on the positioning and lofting pipeline side lines. The limiting parts are parallel to each other, and the height of the limiting parts is at least consistent with the center height of the placed reinforced concrete pipes placed on the pipe foundation; Hang wire ropes on the top of each limiting part and tighten and fix them;

[0037] S4. Use a crane to lift a forklift into the trench, and use the crane to lift the reinforced concrete pipes into the trench one by one and place them in front of the forklift. Taking the wire rope as the standard, use the forklift to install and adjust each reinforced concrete pipe along the axial direction of the wire rope one by one, so that the outer wall of the reinforced concrete pipe is closely attached to the wire rope. Repeat the above process to complete the installation of multiple reinforced concrete pipes;

[0038] S5. After aligning two adjacent reinforced concrete pipes and leaving a gap, formwork the periphery of the aligned interfaces of the two reinforced concrete pipes and cast concrete in situ.

[0039] Through the above solution, in the embodiment of the present invention, by first setting the positioning and lofting pipeline side lines on the surface of the pipe foundation concrete, ensuring that the positioning and lofting pipeline side lines are straight, vertically arranging a plurality of limiting parts at equal intervals on the positioning and lofting pipeline side lines, and connecting wire ropes on the plurality of limiting parts, then when placing the pipe foundation concrete, place the reinforced concrete pipes along the wire rope and the positioning and lofting pipeline side lines, and the reinforced concrete pipes are more convenient and fast to align and connect. That is, taking the positioning and lofting pipeline side lines as the reference, then using a forklift to transport and dock the reinforced concrete pipes is convenient and fast. The thickness and diameter of all reinforced concrete pipes are the same. After connecting two reinforced concrete pipes, cast concrete to ensure the sealing performance of the connection position and the integrity of the connection between the two reinforced concrete pipes. In addition, the height of the limiting parts is at least consistent with the center height of the placed reinforced concrete pipes placed on the pipe foundation, so as to ensure that when placing the reinforced concrete pipes, it is avoided that because the height of the limiting parts is lower than the radius of the reinforced concrete pipes, the placement reference of the reinforced concrete pipes will change, and the height of the limiting parts is at least equal to the radius of the reinforced concrete pipes, then the reinforced concrete pipes can always be placed with the limiting parts and the radius of the reinforced concrete pipes as the reference, which enhances the accuracy of placing the reinforced concrete pipes.

[0040] The embodiment of the present invention solves the problems in the prior art that during the construction and butt joint installation of large-diameter reinforced concrete pipes, not only are there many construction workers, the speed is slow, but also the alignment efficiency and accuracy are limited. It realizes rapid alignment, saves manpower, and has high alignment accuracy.

[0041] Optionally, each limiting part is a steel drill rod 2, and each steel drill rod 2 is set at an equal distance height to ensure that the position error distance between each steel drill rod 2 and the side line of the positioned and lofted pipe is 0 - 0.5 cm; after the steel drill rod 2 is driven into the pipe foundation concrete 3 and the wire rope 4 is set, ensure that the wire rope 4 is located on the placement side of the reinforced concrete pipe 1.

[0042] Through the above scheme, the position error between the steel drill rod 2 and the side line of the positioned and lofted pipe is within 0 - 0.5 cm. Combining with the thickness of the reinforced concrete pipe, the butt joint of two adjacent reinforced concrete pipes can be basically realized, and the coaxiality between adjacent reinforced concrete pipes 1 is determined by the wire rope 4 on the side line of the positioned and lofted pipe, which is convenient for controlling the coaxiality of the reinforced concrete pipe 1 by a forklift.

[0043] Of course, the number of steel drill rods 2 can also be two. In the embodiment of the present invention, the number of steel drill rods 2 is two, which is more convenient for connecting the wire rope 4. The steel drill rods 2 are vertically driven into the side line of the positioned and lofted pipe at an interval of 20 meters.

[0044] Optionally, place the first reinforced concrete pipe 1 on the pipe foundation concrete 3 along the wire rope 4 and press it tightly against the wire rope 4, and set limiting structures on both sides of the first reinforced concrete pipe 1;

[0045] Place the limiting structures on both sides of the bottom of the first reinforced concrete pipe and axially extend outside the edge of the first reinforced concrete pipe;

[0046] When the forklift continues to place the second reinforced concrete pipe 1 along the length direction of the wire rope 4, transport the second reinforced concrete pipe 1 along the length direction of the wire rope 4 to the limiting structure of the first reinforced concrete pipe 1, and align one end interface of the second reinforced concrete pipe 1 with the first reinforced concrete pipe 1 and leave a gap.

[0047] Optionally, the limiting structure is an acute-angle support part. The acute-angle support part includes an arc surface that supports the bottom of the reinforced concrete pipe, and the arc surface extends along the axial direction of the reinforced concrete pipe. By setting the limiting structure, when the reinforced concrete pipe is placed, the bottom of the placed reinforced concrete is unstable and may move left and right. At the same time, since the arc surface extends along the axial direction of the reinforced concrete pipe, it can ensure that after the other reinforced concrete pipe transported from the forklift finds the axis connection for butt joint, one end can also be limited, enhancing the stability of aligning the two reinforced concrete pipes.

[0048] Optionally, when aligning the interface of the second reinforced concrete pipe with that of the first one, the forklift first adjusts the distance between the second reinforced concrete pipe and the length direction of the wire rope, and makes the second reinforced concrete pipe gradually approach the wire rope. After the second reinforced concrete pipe touches the wire rope, the height of the second reinforced concrete pipe is adjusted again so that the bottom surface of the reinforced concrete pipe contacts the pipe foundation concrete. Next, use the forklift to place the next reinforced concrete pipe using the same steps.

[0049] Optionally, there is an interface ring around the edge of the interface of each reinforced concrete pipe. The outer diameter of the interface ring is smaller than the diameter of the outer periphery of the reinforced concrete pipe. When the two interfaces of the two reinforced concrete pipes are butted, the two interface rings are butted first. After the adjacent two interface rings are butted, a groove ring is formed. Finally, concrete is poured at the groove ring. Because of the existence of the groove ring, when pouring concrete, it is more convenient and better to pour the gap between the two reinforced concrete pipes.

[0050] Optionally, the gap between adjacent reinforced concrete pipes 1 is poured through a pouring mechanism;

[0051] The pouring mechanism 5 includes a first arc groove 51, a second arc groove 52 and a third arc groove 53 that are movably connected to the first arc groove 51. The axial widths of the first arc groove 51, the second arc groove 52 and the third arc groove 53 are at least equal to the width of the interface ring;

[0052] The second arc groove 52 and the third arc groove 53 are respectively movably sleeved at both ends of the first arc groove 51 and can telescopically move on the first arc groove 51; the upper surfaces of the first arc groove 51, the second arc groove 52 and the third arc groove 53 are connected by a plurality of connecting rods;

[0053] During operation, the arc formed by the first arc groove 51, the second arc groove 52 and the third arc groove 53 is matched with the radian of the reinforced concrete pipe 1 and placed in the gap between two adjacent reinforced concrete pipes 1. At this time, move the second arc groove 52 and the third arc groove 53 so that the second arc groove 52 and the third arc groove 53 approach and contact;

[0054] Pour concrete into the first arc groove 51, the second arc groove 52 and the third arc groove 53. After the concrete gradually solidifies, move the second arc groove 52 and the third arc groove 53. The second arc groove 52 and the third arc groove 53 retract along the outside of the first arc groove 51, and then remove the first arc groove 51, that is, the first arc groove 51, the second arc groove 52 and the third arc groove 53 are all removed.

[0055] The pouring mechanism formed by the first arc-shaped groove 51, the second arc-shaped groove 52, and the third arc-shaped groove 53 is fixed to the reinforced concrete pipe 1. The second arc-shaped groove 52 and the third arc-shaped groove 53 are arranged in a structure that is movable with the first arc-shaped groove 51, which enables the structure formed by the first arc-shaped groove 51, the second arc-shaped groove 52, and the third arc-shaped groove 53 to be easily installed on the reinforced concrete pipe 1. At the same time, combined with the groove ring formed by the above-mentioned interface ring, it is convenient to pour the bottom of the connection position of the two reinforced concrete pipes 1. After pouring concrete from the first arc-shaped groove 51, the poured concrete is manually compacted. When the concrete has slightly solidified to the point where the second arc-shaped groove 52 and the third arc-shaped groove 53 can be removed, the second arc-shaped groove 52 and the third arc-shaped groove 53 are withdrawn, and then the first arc-shaped groove 51, the second arc-shaped groove 52, and the third arc-shaped groove 53 are taken down together, achieving a better pouring effect for the two reinforced concrete pipes 1. At the same time, the pouring is convenient, and the sealing effect of the pouring is further ensured. At the same time, the connection between the reinforced concrete pipes 1 is better and the integrity is higher.

[0056] Optionally, the diameter of the reinforced concrete pipe is dn1200mm - dn2500mm. Since the diameter of the reinforced concrete pipe is relatively large, using a forklift for transportation and docking saves manpower overall.

[0057] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, reference can be made to each other. The key point of each embodiment is to illustrate the differences from other embodiments.

[0058] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A method for installing large-diameter reinforced concrete pipes, characterized in that, It includes the following steps: Set the pipe foundation concrete to reach the design strength; Set the positioning and lofting pipeline side line on the surface of the pipe foundation concrete, and ensure that the positioning and lofting pipeline side line is straight, and ensure that the positioning and lofting pipeline side line is parallel to the edge line of the pipe foundation concrete in the placing direction of the reinforced concrete pipe; Drive at least two limiting parts perpendicular to the positioning and lofting pipeline side line on the positioning and lofting pipeline side line. The limiting parts are parallel to each other, and the height of the limiting parts is at least the same as the center height of the placed reinforced concrete pipe on the pipe foundation; Hang a string on the top of each limiting part and tighten and fix it; Use a crane to lift the forklift into the trench, and use the crane to lift each section of the reinforced concrete pipe into the trench one by one and place it in front of the forklift. Taking the string as the standard, use the forklift to install and adjust each section of the reinforced concrete pipe along the axial direction of the string, so that the outer wall of the reinforced concrete pipe is closely attached to the string, and repeat the above process to complete the installation of multiple reinforced concrete pipes; After aligning two adjacent reinforced concrete pipes and leaving a gap, formwork the periphery of the aligned interfaces of the two reinforced concrete pipes and cast concrete in situ.

2. The method for installing a large-diameter reinforced concrete pipe according to claim 1, characterized in that, The limiting part is a steel drill rod, and each steel drill rod is set at an equal distance height to ensure that the position error distance between each steel drill rod and the positioning and lofting pipeline side line is 0 - 0.5 cm; After the steel drill rod is driven into the pipe foundation concrete and the string is set, ensure that the string is located on the placing side of the reinforced concrete pipe.

3. The method for installing a large-diameter reinforced concrete pipe according to claim 1, characterized in that, Place the first reinforced concrete pipe on the pipe foundation concrete along the string and press it tightly against the string, and set limiting structures on both sides of the first reinforced concrete pipe; Place the limiting structure on both sides of the bottom of the first reinforced concrete pipe and extend axially outside the edge of the first reinforced concrete pipe; When the forklift continues to place the second reinforced concrete pipe along the length direction of the string, transport the second reinforced concrete pipe along the length direction of the string to the limiting structure of the first reinforced concrete pipe, and align one end interface of the second reinforced concrete pipe with the first reinforced concrete pipe and leave a gap.

4. The method for installing a large-diameter reinforced concrete pipe according to claim 3, characterized in that, The limiting structure is an acute-angle support part, and the acute-angle support part includes an arc surface that supports the bottom of the reinforced concrete pipe, and the arc surface extends along the axial direction of the reinforced concrete pipe.

5. The method for installing a large-diameter reinforced concrete pipe according to claim 3, characterized in that, When aligning the interfaces of the second reinforced concrete pipe and the first reinforced concrete pipe, the forklift first adjusts the distance between the second reinforced concrete pipe and the length direction of the string, and makes the second reinforced concrete pipe gradually approach the string. After the second reinforced concrete pipe touches the string, adjust the height of the second reinforced concrete pipe again so that the bottom surface of the reinforced concrete pipe contacts the pipe foundation concrete. Next, use the forklift to place the next reinforced concrete pipe in the same steps.

6. The method for installing large-diameter reinforced concrete pipes according to claim 3, characterized in that, An interface ring is provided around the edge of the interface of each reinforced concrete pipe. The outer diameter of the interface ring is smaller than the diameter of the periphery of the reinforced concrete pipe. When the interfaces of two reinforced concrete pipes are butted, the two interface rings are butted first. After the adjacent two interface rings are butted, a groove ring is formed. Finally, concrete is poured at the groove ring.

7. The method for installing a large-diameter reinforced concrete pipe according to claim 6, characterized in that, Pour the gap between adjacent reinforced concrete pipes through a pouring mechanism; The pouring mechanism includes a first arc-shaped groove, a second arc-shaped groove and a third arc-shaped groove movably connected to the first arc-shaped groove. The axial widths of the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove are at least equal to the width of the interface ring; The second arc-shaped groove and the third arc-shaped groove are respectively movably sleeved at both ends of the first arc-shaped groove and can telescopically move on the first arc-shaped groove; the upper surfaces of the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove are connected by a plurality of connecting rods; During operation, the arc formed by the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove is matched with the radian of the reinforced concrete pipe and placed in the gap between two adjacent reinforced concrete pipes. At this time, move the second arc-shaped groove and the third arc-shaped groove so that the second arc-shaped groove and the third arc-shaped groove approach and contact; Pour concrete into the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove. After the concrete gradually solidifies, move the second arc-shaped groove and the third arc-shaped groove. The second arc-shaped groove and the third arc-shaped groove retract along the outside of the first arc-shaped groove, and then remove the first arc-shaped groove, that is, the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove are all removed.

8. The method for installing large-diameter reinforced concrete pipes according to claim 1, characterized in that, The diameter of the reinforced concrete pipe is dn1200mm - dn2500mm.

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