Reinforced concrete pressure pipe

Abstract

The utility model discloses a reinforced concrete pressure pipe and belongs to the field of reinforced concrete pipelines, the reinforced concrete pressure pipe comprises a pipe body, a steel bell and spigot assembly and reinforcement cages, the steel bell and spigot assembly comprises a steel spigot steel ring and a steel socket steel ring which are arranged at the spigot end and the socket end of the pipe body respectively, and an inner-layer reinforcement cage and an outer-layer reinforcement cage are arranged in the pipe body. End stirrup assemblies are arranged on the outer walls of the two ends of the pipe body. The double-rubber-ring steel bell and spigot is adopted, the bell and spigot steel ring is isolated from the soil layer after installation, the water stop steel ring is welded to the rear end of the bell and spigot steel ring, the water stop steel ring is of an L-shaped structure, the expansion rubber strip is arranged in the water stop steel ring, and the water stop steel ring and the inner-layer reinforcement cage are welded in a bell and spigot steel ring fixing rib mode; the sealing performance of the end connector and the integrality of the bell and spigot steel ring and the pipe body structure are guaranteed, the overall structural performance of the pipe is improved to a great extent, and leakage of the connector can be prevented.

Description

Technical Field

[0001] This application relates to the field of reinforced concrete pipes, and more specifically, to a reinforced concrete pressure pipe. Background Art

[0002] Reinforced concrete drainage pipes have been used in China for more than a hundred years. Their products have irreplaceable advantages such as good external pressure resistance, low production cost, convenient manufacturing, low price, and long service life. So far, they have been widely used in fields such as urban water supply, drainage, sewage treatment, and farmland irrigation, undertaking the important task of transporting fluid media, which is of great significance for ensuring the safe operation of projects and the protection of the ecological environment.

[0003] The patent document with the publication number CN219673555U discloses a double rubber ring steel interface reinforced concrete drainage pipe. This double rubber ring steel interface reinforced concrete drainage pipe includes a pipe body, a joint steel ring, and a steel reinforcement cage. The joint steel ring is divided into a socket joint steel ring and a spigot joint steel ring. The socket joint steel ring is installed at the socket end of the pipe body, and the spigot joint steel ring is installed at the spigot end of the pipe body. An anchoring water stop steel ring is welded to the rear ends of the socket joint steel ring and the spigot joint steel ring. The steel reinforcement cage is divided into an inner steel reinforcement cage and an outer steel reinforcement cage. Reinforcement steel rings and U-shaped reinforcement steel bars are provided on the outer walls at both ends of the pipe body. The reinforced concrete drainage pipe in the above application document has poor sealing performance, especially at the joint part. Due to insufficient sealing and durability, leakage problems are likely to occur at the pipe joints, which not only affects the normal use of the pipe, but also may cause unstable internal pressure of the pipe, further accelerating the aging and damage of the pipe. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present utility model provides a reinforced concrete pressure pipe, which solves the problems raised in the above background art. To achieve the above objectives, the present utility model is realized through the following technical solutions: A reinforced concrete pressure pipe, including a pipe body, characterized in that steel socket and spigot assemblies are provided at the socket end and the spigot end of the pipe body. An inner steel reinforcement cage is provided inside the pipe body. The inner steel reinforcement cage includes inner longitudinal steel bars and inner ring steel bars. The steel socket and spigot assemblies include a steel socket steel ring and a steel spigot steel ring. The steel socket steel ring and the steel spigot steel ring are fixedly installed at both ends of the pipe body. A water stop steel plate assembly is provided at the rear ends of the steel socket steel ring and the steel spigot steel ring. The water stop steel plate assembly includes a socket end water stop steel plate and a spigot end water stop steel plate. The socket end water stop steel plate and the spigot end water stop steel plate are respectively welded to the steel socket steel ring and the steel spigot steel ring. The socket end water stop steel plate and the spigot end water stop steel plate are respectively welded to the inner longitudinal steel bars through socket steel ring fixing bars and spigot steel ring fixing bars. Water swelling rubber strips are provided on the inner surfaces of the socket end water stop steel plate and the spigot end water stop steel plate.

[0005] Preferably, an outer steel reinforcement cage is provided on the outer side of the pipe body, and the outer steel reinforcement cage includes outer longitudinal bars, and the outer longitudinal bars are welded to outer ring bars.

[0006] Preferably, the inner longitudinal bars are welded to inner ring bars.

[0007] Preferably, pressure test water injection holes and grouting holes are provided on the surface of the pipe body.

[0008] Preferably, two grooves are provided on the inner surface of the steel socket steel ring, and rubber rings are provided in the grooves.

[0009] Preferably, end stirrup assemblies are provided on the outer walls at both ends of the pipe body. The end stirrup assemblies include end hoop-shaped reinforcement bars, and the end stirrup assemblies include end hoop-shaped reinforcement bars and end ring bars. The end hoop-shaped reinforcement bars are arranged between the steel socket and spigot assembly and the outer steel reinforcement cage. The end hoop-shaped reinforcement bars are respectively welded to the steel socket and spigot assembly and the outer longitudinal bars, and end ring bars are fixedly connected inside the end hoop-shaped reinforcement bars.

[0010] The beneficial effects of the present application are as follows:

[0011] (1) The present application adopts a double rubber ring steel socket and spigot. After installation, the socket steel ring is isolated from the soil layer. A water stop steel ring is welded at the rear end of the socket steel ring. The water stop steel ring adopts an L-shaped structure, and an expansion rubber strip is arranged inside. The water stop steel ring is welded to the inner longitudinal bars of the pipe through the form of socket steel ring fixing bars, ensuring the sealing performance of the end joint and the integrity of the socket steel ring and the pipe body structure, greatly improving the overall structural performance of the pipe material and preventing joint leakage.

[0012] (2) The jacking construction method implemented in the present application uses a reinforced concrete pressure pipe. In view of the large jacking force of large-diameter pipe materials, the port structure of the pipe material is optimized, increasing the bearing capacity of the reinforced concrete at both ends of the pipe and the anti-cracking performance of the large-volume concrete. While ensuring the structural strength, it can withstand greater external loads and internal water pressures compared with DRCP pipes; at the same time, this pipe material also has advantages in solving the complex production process of the prestressed structure of JPCCP pipes and the problem of steel wire stress corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings constituting a part of this application are used to provide a further understanding of this application, making other features, purposes, and advantages of this application more obvious. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0015] In the above figures,

[0016] 1. Pipe body; 2. Steel socket steel ring; 3. Steel spigot steel ring; 4. Inner steel reinforcement cage; 401. Inner longitudinal reinforcement; 402. Inner ring reinforcement; 5. Waterstop steel plate assembly; 501. Socket end waterstop steel plate; 502. Spigot end waterstop steel plate; 503. Socket steel ring fixing bar; 504. Spigot steel ring fixing bar; 505. Water swelling rubber strip; 6. Outer steel reinforcement cage; 601. Outer longitudinal reinforcement; 602. Outer ring reinforcement; 7. Pressure test water injection hole; 8. Grouting hole; 9. End hoop assembly; 901. End hoop-shaped reinforcement; 902. End ring reinforcement. Specific embodiments

[0017] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0018] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. This application will be described in detail below with reference to the drawings and in conjunction with the embodiments. Embodiment 1

[0019] See Figure 1 , this embodiment provides a reinforced concrete pressure pipe, including a pipe body 1. A steel socket and spigot assembly is provided at the socket end and spigot end of the pipe body 1. An inner steel reinforcement cage 4 is provided inside the pipe body 1. The inner steel reinforcement cage 4 includes inner longitudinal reinforcement 401 and inner ring reinforcement 402. The steel socket and spigot assembly includes a steel socket steel ring 2 and a steel spigot steel ring 3. The steel socket steel ring 2 and the steel spigot steel ring 3 are fixedly installed at both ends of the pipe body 1. A waterstop steel plate assembly 5 is provided at the rear ends of the steel socket steel ring 2 and the steel spigot steel ring 3. The waterstop steel plate assembly 5 includes a socket end waterstop steel plate 501 and a spigot end waterstop steel plate 502. The socket end waterstop steel plate 501 and the spigot end waterstop steel plate 502 are respectively welded to the steel socket steel ring 2 and the steel spigot steel ring 3. The socket end waterstop steel plate 501 and the spigot end waterstop steel plate 502 are respectively welded to the inner longitudinal reinforcement 401 through a socket steel ring fixing bar 503 and a spigot steel ring fixing bar 504. A water swelling rubber strip 505 is provided on the inner surfaces of the socket end waterstop steel plate 501 and the spigot end waterstop steel plate 502.

[0020] When the above-mentioned device is specifically used, the pipe body 1 is connected by adopting a combination of a steel socket ring 2 and a steel spigot ring 3 with double-groove inner rubber rings. The water-stop steel plate assembly 5 at the rear end of the steel socket and spigot assembly will play a waterproof role. The socket-end water-stop steel plate 501 and the spigot-end water-stop steel plate 502 adopt an L-shaped structure, and a water-swellable rubber strip 505 is arranged inside. The socket-end water-stop steel plate 501 and the spigot-end water-stop steel plate 502 are welded to the inner steel reinforcement cage 4 through the socket steel ring fixing rib 503 and the spigot steel ring fixing rib 504, ensuring the sealing of the end joint and the integrity of the structure of the steel socket and spigot assembly and the pipe body 1. The pipe body 1 has good sealing and durability, effectively preventing the water seepage problem of the pressure pipeline joint, thereby maintaining the normal operation of the pipeline system. Embodiment 2

[0021] See Figure 1 , on the basis of Embodiment 1, an outer steel reinforcement cage 6 is arranged on the outer side of the pipe body 1. The outer steel reinforcement cage 6 includes outer longitudinal reinforcements 601, and the outer longitudinal reinforcements 601 are welded to the outer ring reinforcements 602. The outer ring reinforcements 602 and the outer longitudinal reinforcements 601 form a steel reinforcement cage body. The inner steel reinforcement cage 4 also includes inner longitudinal reinforcements 401, and the inner longitudinal reinforcements 401 are welded to the inner ring reinforcements 402. The inner longitudinal reinforcements 401 and the inner ring reinforcements 402 form a steel reinforcement cage body. Pressure test water injection holes 7 and grouting holes 8 are arranged on the surface of the pipe body 1. Grooves are arranged on the inner surface of the steel socket ring 2, and rubber rings are arranged in the grooves. The number of grooves is two. End hoop assemblies 9 are arranged on the outer walls at both ends of the pipe body 1. The end hoop assembly 9 includes end hoop-shaped reinforcing ribs 901. The end hoop-shaped reinforcing ribs 901 are arranged between the steel socket and spigot assembly and the outer steel reinforcement cage 6. The end hoop-shaped reinforcing ribs 901 are welded to the steel socket and spigot assembly and the outer longitudinal reinforcements 601. An end ring reinforcement 902 is fixedly connected inside the end hoop-shaped reinforcing ribs 901. The end hoop-shaped reinforcing ribs 901 are arranged within a range of 200 mm - 300 mm on both sides of the end of the pipe body 1.

[0022] When the above-mentioned device is specifically used, through the reinforcement measure of adopting the end hoop-shaped reinforcing ribs 901, aiming at the characteristic of large jacking force for large-diameter pipes, the structure of the pipe port is optimized, the bearing capacity of the reinforced concrete at both ends of the pipe is increased, and the anti-cracking performance of the mass concrete is improved. The pipeline can bear a higher internal water pressure while ensuring the structural strength, and is suitable for pressure drainage and sewage pipe networks with special requirements for water seepage and leakage.

[0023] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A reinforced concrete pressure pipe, comprising a pipe body (1), characterized in that The socket end and spigot end of the pipe body (1) are provided with a steel socket and spigot assembly. An inner steel reinforcement cage (4) is arranged inside the pipe body (1). The inner steel reinforcement cage (4) includes inner longitudinal bars (401) and inner ring bars (402). The steel socket and spigot assembly includes a steel socket ring (2) and a steel spigot ring (3). The steel socket ring (2) and the steel spigot ring (3) are fixedly installed at both ends of the pipe body (1). A water stop steel plate assembly (5) is arranged at the rear ends of the steel socket ring (2) and the steel spigot ring (3). The water stop steel plate assembly (5) includes a socket end water stop steel plate (501) and a spigot end water stop steel plate (502). The socket end water stop steel plate (501) and the spigot end water stop steel plate (502) are respectively welded to the steel socket ring (2) and the steel spigot ring (3). The socket end water stop steel plate (501) and the spigot end water stop steel plate (502) are respectively welded to the inner longitudinal bars (401) through a socket steel ring fixing bar (503) and a spigot steel ring fixing bar (504). A water swelling rubber strip (505) is arranged on the inner surfaces of the socket end water stop steel plate (501) and the spigot end water stop steel plate (502).

2. A reinforced concrete pressure pipe according to claim 1, characterized in that, An outer steel reinforcement cage (6) is arranged outside the pipe body (1). The outer steel reinforcement cage (6) includes outer longitudinal bars (601). The outer longitudinal bars (601) are welded to the outer ring bars (602).

3. A reinforced concrete pressure pipe according to claim 2, characterized in that, The inner longitudinal bars (401) are welded to the inner ring bars (402).

4. A reinforced concrete pressure pipe according to claim 3, characterized in that, Pressure test water injection holes (7) and grouting holes (8) are formed on the surface of the pipe body (1).

5. A reinforced concrete pressure pipe according to claim 4, characterized in that, Two grooves are formed on the inner surface of the steel socket ring (2). Rubber rings are arranged in the grooves.

6. A reinforced concrete pressure pipe according to claim 5, characterized in that, End hoop assemblies (9) are arranged on the outer walls at both ends of the pipe body (1). The end hoop assemblies (9) include end hoop-shaped reinforcing bars (901) and end ring bars (902). The end hoop-shaped reinforcing bars (901) are arranged between the steel socket and spigot assembly and the outer steel reinforcement cage (6). The end hoop-shaped reinforcing bars (901) are respectively welded to the steel socket and spigot assembly and the outer longitudinal bars (601). An end ring bar (902) is fixedly connected inside the end hoop-shaped reinforcing bars (901).

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