A connection node between a jacking pipe and a reserved hole

Abstract

The present invention discloses a connection node between a jacking pipe and a reserved hole. The connection node is an annular structure surrounded by a rubber-steel-edge waterstop. One end of the annular structure is fixedly connected to the jacking pipe, and the other end is fixedly connected to the reserved hole of the structure. A sealing filler is filled in the gap between the outer periphery of the annular structure and the jacking pipe, and a sealing filler is filled in the gap between the outer periphery of the annular structure and the reserved hole of the structure. By adopting an annular structure surrounded by a rubber-steel-edge waterstop as a connection node, and cooperating with a sealing filler to fill the gap between the annular structure and the reserved hole of the structure, a connection node is formed that is convenient for connecting between the jacking pipe and the reserved hole of the structure, and can form a double-layer waterproofing. It is convenient to repair leaking nodes, the construction is convenient, the cost is low, the construction period is short, and the subsequent use effect is good.

Description

Technical Field

[0001] The present invention relates to the field of underground pipe network engineering, and in particular to a connection node between a jacking pipe and a reserved hole. Background Art

[0002] In conventional underground pipe network projects, pipe jacking is often used in deep underground locations. During the pipeline network construction process, particularly where the pipe end meets the structure, the pipe-receiving structure is completed first, with a circular opening reserved in advance. The pipe is then inserted after the foundation pit is backfilled and compacted.

[0003] In pipe jacking project design, a circular opening with a diameter slightly larger than the outer diameter of the jacking pipe is usually reserved in the side wall of the structure. This reserved circular opening coincides with the centerline of the jacking pipe, with a gap of 150mm to 200mm to facilitate the subsequent jacking. After the jacking pipe is in place, fine stone concrete mixed with a micro-expansion agent is often used to densely fill the gap between the jacking pipe and the reserved opening to prevent water leakage during subsequent operations.

[0004] However, in the actual design and construction of pipe jacking projects, due to design errors or construction errors, the following errors may occur: (1) The diameter of the reserved hole of the structure is smaller than the outer diameter of the pipe jacking; (2) There is a deviation between the center line of the pipe jacking and the reserved hole; (3) The reserved gap between the circular hole reserved in the structure and the pipe jacking is too small. The above situations will lead to the failure of the pipe jacking to be pushed in later or the failure to fill and compact it after pushing in, resulting in water leakage in the later stage. For similar situations mentioned above, the conventional design and construction measures are to dig up the foundation pit that has been backfilled around the reserved hole, remove the reinforced concrete around the unsuitable reserved hole and expand it to a reasonable size, then plant the steel bars and re-pour the concrete, and then re-fill the foundation pit after the newly poured reinforced concrete reaches the strength, and then carry out the pipe jacking construction after effective compaction. However, this method is difficult, time-consuming, labor-intensive and expensive.

[0005] Therefore, the inventors found that how to provide a method that can save time and effort and effectively solve the problem of connecting the later jacking pipe with the reserved hole is a problem that needs to be solved. Summary of the Invention

[0006] Based on the problems existing in the prior art, the purpose of the present invention is to provide a connection node between a jacking pipe and a reserved hole, which can solve the problem in the existing jacking pipe project that the jacking pipe cannot be pushed in at a later stage or cannot be filled densely after being pushed in, resulting in water leakage in the later stage, and the subsequent maintenance requires digging up the periphery of the foundation pit and backfilling, which is difficult, time-consuming, labor-intensive and expensive.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] The embodiment of the present invention provides a connection node between a jacking pipe and a reserved hole. The connection node is an annular structure surrounded by a rubber-steel waterstop. A steel plate at one end of the annular structure is fixedly connected to the jacking pipe, and a steel plate at the other end is fixedly connected to the reserved hole of the structure.

[0009] A sealing filler is provided on the outer circumference of the annular structure body to fill the gap between the annular structure body and the jacking pipe and the gap between the annular structure body and the reserved hole of the structure.

[0010] It can be seen from the technical solutions provided by the present invention that the connection node between the jacking pipe and the reserved opening provided by the embodiment of the present invention has the following beneficial effects:

[0011] By using an annular structure surrounded by a rubber-steel waterstop as a connection node and filling the gap between the annular structure and the reserved hole of the structure with a sealing filler, a connection node is formed that is convenient for connecting the jacking pipe and the reserved hole of the structure, and can form a double layer of waterproofing. This makes it easy to handle incorrect jacking nodes, the construction operation is convenient, the cost is low, the construction period is short, and the subsequent use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A schematic diagram of the connection node between the jacking pipe and the reserved hole provided in an embodiment of the present invention;

[0014] The components corresponding to the marks in the figure are: 1-jacking pipe; 2-structure; 3-reserved opening; 4-rubber steel edge waterstop; 5-screw; 6-outer diameter of jacking pipe; 7-reserved opening diameter; 8-center line between jacking pipe and reserved opening; 9-extension distance; 10-sealing filler. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the specific content of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The contents not described in detail in the embodiments of the present invention belong to the prior art known to professional and technical personnel in this field.

[0016] like Figure 1 As shown, an embodiment of the present invention provides a connection node between a jacking pipe and a reserved hole, wherein the connection node is an annular structure surrounded by a rubber-steel edge waterstop; a steel plate at one end of the annular structure is fixedly connected to the jacking pipe, and a steel plate at the other end is fixedly connected to the reserved hole of the structure;

[0017] A sealing filler is filled in the gap between the outer periphery of the annular structure and the top pipe, and a sealing filler is filled in the gap between the outer periphery of the annular structure and the reserved hole of the structure.

[0018] In the above connection node, the steel plate at one end of the annular structure is fixedly connected to the end of the top pipe by a plurality of screws;

[0019] The steel plate at the other end of the annular structure is fixedly connected to the reserved hole of the structure through a plurality of screws.

[0020] In the above connection node, the center line of the top pipe coincides with the center line of the reserved opening of the structure.

[0021] In the above-mentioned connection node, the reserved expansion distance between the top pipe and the reserved opening of the structure is 20mm to 30mm.

[0022] The connection node of the present invention is constructed according to the following steps, including:

[0023] Step a. Properly adjust the pipe jacking elevation so that the pipe centerline coincides with the centerline of the reserved opening at the edge of the building, ensuring effective construction.

[0024] Step b. Reserve a distance between the top pipe end and the outer edge of the side wall of the structure as an expansion joint;

[0025] Step c. Filling the sealing material as a sealing filler;

[0026] Step d. Install the rubber steel edge waterstop so that both ends of the rubber steel edge waterstop are connected to the reserved holes of the jacking pipe and the structure respectively;

[0027] Step e. Use screws to fix the rubber-steel edge waterstop around the perimeter of the jacking pipe and the perimeter of the reserved hole.

[0028] Since the connection node of the present invention adopts an annular structure surrounded by a rubber-steel waterstop as the connection node, it is easy to construct and has good waterproofness, durability and stability. When used to handle the construction of an erroneous jacking node, there is no need to dig up the backfilled foundation pit, and the construction workers can operate inside the jacking pipe, which makes the construction convenient and simple; there is no need to chisel out and expand the reinforced concrete around the reserved opening, saving project investment; the rubber-steel waterstop and the sealing filler are double-layer waterproof, with good effect, meeting the design and use requirements; the rubber-steel waterstop is simple to fix, which is convenient for later inspection and maintenance. The connection node can be used as an on-site construction treatment measure after discovering construction or design errors.

[0029] The embodiments of the present invention are described in further detail below.

[0030] like Figure 1 As shown, an embodiment of the present invention provides a connection node between a jacking pipe and a reserved hole, which can connect a jacking pipe 1 and a reserved hole 3 of a structure 2. The connection node is an annular structure surrounded by a rubber-steel waterstop 4; one end of the annular structure is fixedly connected to the jacking pipe 1, and the other end is fixedly connected to the reserved hole 3 of the structure 2;

[0031] The gap between the outer periphery of the annular structure body and the top pipe is filled with a sealing filler 10 , and the gap between the outer periphery of the annular structure body and the reserved hole 3 of the structure 2 is filled with a sealing filler 10 .

[0032] See also Figure 1 When the connection node of the present invention is used, the following steps are specifically followed for construction:

[0033] Step a. Adjust the pipe jacking elevation appropriately within the permitted range of the pipe network so that the center line of the pipe jacking 1 coincides with the center line of the reserved hole 8 as much as possible, so that both can be effectively constructed;

[0034] Step b. Push the jacking pipe to the edge of the reserved opening of the built structure, leaving a 20mm to 30mm expansion distance 9 between the two as an expansion joint;

[0035] Step c. Filling the circumferential gap between the top pipe end and the side wall of the structure with a sealing material as a sealing filler 10;

[0036] Step d. Purchase the appropriate size of rubber steel waterstop 4 according to the actual situation and install it so that the steel plates at both ends of the rubber steel waterstop 4 are completely located on the inner wall of the top pipe 1 and the inner wall around the opening, and the middle rubber completely covers the expansion joint;

[0037] Step e. Use screws 5 to fix the steel plates on the top pipe wall and the side wall of the structure evenly at 15° to 20° around the reserved hole in the middle of the steel plates at both ends of the rubber steel edge waterstop 4, thus completing the installation of the connection node.

[0038] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A connection node between a jacking pipe and a reserved hole, characterized in that: Used in underground pipe jacking projects, it is used to seal the top pipe and the reserved hole when the reserved hole diameter is smaller than the outer diameter of the top pipe, the center line of the reserved hole is deviated, or the reserved gap between the reserved circular hole and the top pipe is too small. The connection node is an annular structure surrounded by a rubber-steel waterstop; the steel plate at one end of the annular structure is fixedly connected to the top pipe, and the steel plate at the other end is fixedly connected to the reserved hole of the structure; A sealing filler is filled in the gap between the outer periphery of the annular structure and the jacking pipe, and a sealing filler is filled in the gap between the outer periphery of the annular structure and the reserved hole of the structure; The reserved telescopic distance between the jacking pipe and the reserved opening of the structure is 20mm to 30mm; The center line of the jacking pipe coincides with the center line of the reserved hole of the structure.

2. The connection node between the jacking pipe and the reserved hole according to claim 1, characterized in that: The steel plate at one end of the annular structure is fixedly connected to the end of the top pipe by a plurality of screws; The steel plate at the other end of the annular structure is fixedly connected to the reserved hole of the structure through a plurality of screws.

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