JPCCP with rigid reinforcing assembly on socket end face
By adding steel rings and rigid reinforcement components to the socket end surface of the JPCCP pipe, the process accuracy error, material performance differences and lack of reinforcement components in the jacking construction of JPCCP pipes are solved, which significantly improves the compressive bearing capacity and construction safety of the pipeline.
Patent Information
- Application Number
- CN202421785217.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-26
AI Technical Summary
In the ejection construction, existing JPCCP pipes have problems with process accuracy errors, interface peeling or slip caused by differences in material performance, and insufficient compressive resistance caused by the lack of reinforced components.
A JPCCP pipe with rigid reinforcement components on the socket end face is designed, and the end face of the pipe is reinforced by steel rings, and rigid reinforcement components are provided on the socket end face, including annular steel rings and reinforcement steel plates, ensuring the flatness of the end face and the compressive bearing capacity.
It significantly improves the integrity of the pipeline structure and compressive bearing capacity, solves process accuracy errors and material interface problems, and enhances the stress performance and safety factor of the ejected construction.
Smart Images
Figure CN222772796U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground engineering pipe jacking construction, in particular to a JPCCP pipe with a rigid reinforcement component on the end face of a socket. Background Art
[0002] JPCCP pipe is a new type of pipe made of prestressed steel cylinder concrete and non-prestressed reinforced concrete. Its basic structure is to wrap high-strength steel wire around the concrete core with a steel cylinder, and then cast an outer protective layer of fine stone concrete. The prestressed part is mainly responsible for bearing the internal water pressure and external load, and the outer fine stone concrete is mainly responsible for the corrosion protection of the prestressed steel wire. It is suitable for large-diameter water supply pipelines and pressurized drainage and sewage pipelines.
[0003] The main problems of using existing JPCCP pipes for jacking construction are as follows:
[0004] 1. It is difficult to avoid process accuracy errors in the JPCCP pipe spigot end face during pouring. This error will affect the flatness of the pipe end face, which may lead to stress concentration in subsequent jacking construction.
[0005] 2. There are differences in material properties between the outer fine stone concrete and the core concrete of the JPCCP pipe. Due to the different elastic modulus, shrinkage rate and other properties of the two materials, the interface performance between them will also be affected. In particular, when the inner concrete layer and the fine stone concrete protective layer of the JPCCP pipe are poured in layers, if the adhesion between the concrete layers is insufficient, interface peeling or slippage is likely to occur. This phenomenon will seriously weaken the overall compressive resistance of the pipeline, making it more likely for the pipeline to be crushed in layers when it is under pressure during the jacking process.
[0006] 3. The existing pipeline structure port has no corresponding reinforcement components, and cannot protect the port concrete layer during the jacking process. Utility Model Content
[0007] In view of the deficiencies of the prior art, the utility model provides a JPCCP pipe with a rigid reinforcement component on the end face of the spigot, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical scheme: a JPCCP pipe with a rigid reinforcement component on the end face of the spigot, comprising a steel cylinder, a grouting pipe is installed inside the steel cylinder, a spigot steel ring is welded on one side of the steel cylinder, a socket steel ring is welded on the other side of the steel cylinder, pipe core concrete is poured inside and outside the steel cylinder, prestressed steel wire is wound around the outside of the pipe core concrete, and a fine stone concrete or reinforced concrete protective layer is poured outside the prestressed steel wire.
[0008] Preferably, a grouting hole is provided on the inner side of the socket steel ring and is equipped with a check valve, a joint test water inlet hole is provided on the inner side of the socket steel ring, and rubber rings are installed on both sides of the joint test water inlet hole.
[0009] Preferably, both ends of the socket steel ring are folded.
[0010] Preferably, the interior of the reinforced concrete protective layer is provided with a steel cage, prestressed steel wires and anchor bars, and the outer side of the anchor bars is equipped with a steel ring.
[0011] Preferably, a socket end surface reinforcement steel plate is installed between the steel cylinders, and a wooden gasket is provided on the side of the socket end surface reinforcement steel plate.
[0012] Preferably, the outer end of the grouting pipe is equipped with a threaded nut.
[0013] The utility model provides a JPCCP pipe with a rigid reinforcement component on the end face of the socket, which has the following beneficial effects:
[0014] (1) The JPCCP pipe with a rigid reinforcement component on the end face of the socket uses a steel ring to reinforce the end face of the JPCCP pipe, which can significantly improve the integrity of the pipe structure. In particular, the jacking axis will have a certain deviation during the jacking construction, and the jacking force on the end face of the pipe segment may cause excessive local stress. Reinforcing the end face of the JPCCP pipe with a steel ring will significantly improve the compressive bearing capacity of the end face.
[0015] (2) The JPCCP pipe with a rigid reinforcement component on the end face of the socket solves the problem of process accuracy error of the JPCCP pipe socket end face. The rigid reinforcement component is used to ensure the flatness of the socket end face surface and avoid the stress concentration problem that may be caused by the jacking construction of the JPCCP pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall appearance of the three-dimensional structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the overall sectional three-dimensional structure of the utility model;
[0018] Figure 3 It is a schematic diagram of the planar cross-sectional structure of the utility model.
[0019] In the figure:
[0020] 1. Steel cylinder; 2. Grouting pipe; 3. Socket steel ring; 4. Socket steel ring; 5. Concrete protective layer; 6. Pipe core concrete; 7. Grouting hole; 8. Joint test water inlet hole; 9. Rubber ring; 10. Steel cage; 11. Prestressed steel wire; 12. Anchor bar; 13. Steel ring; 14. Reinforced steel plate; 15. Wooden washer; 16. Threaded nut. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Embodiment 1
[0022] See also Figure 1-Figure 3 A JPCCP pipe with a rigid reinforcement component on the end face of a socket comprises a steel cylinder 1, a grouting pipe 2 is arranged inside the steel cylinder 1, a socket steel ring 3 is welded on one side of the steel cylinder 1, a grouting hole 7 and a joint test water inlet hole 8 are arranged on the inner side of the socket steel ring 3, rubber rings 9 are arranged on both sides of the joint test water inlet hole 8, a socket steel ring 4 is welded on the other side of the steel cylinder 1, both ends of the socket steel ring 4 are folded, pipe core concrete 6 is poured inside and outside the steel cylinder 1, prestressed steel wire 11 is wound around the outer side of the pipe core concrete 6, a fine stone concrete protective layer 5 or a reinforced concrete protective layer 5 is poured on the outer side of the prestressed steel wire 11, a steel cage 10, a prestressed steel wire 11 and an anchor bar 12 are arranged inside the reinforced concrete protective layer 5, a steel ring 13 is arranged on the outer side of the anchor bar 12, a socket end face reinforcement steel plate 14 is arranged between the steel cylinders 1, a wooden washer 15 is arranged on the side of the socket end face reinforcement steel plate 14, and a threaded nut 16 is arranged on the outer end of the grouting pipe 2. The use of steel rings to reinforce the end face of the JPCCP pipe can significantly improve the integrity of the pipe structure; in particular, the jacking axis will have a certain deviation during the jacking construction, and the jacking force on the end face of the pipe segment may cause excessive local stress. The use of steel rings to reinforce the end face of the JPCCP pipe can significantly improve the compressive bearing capacity of the end face. The problem of poor flatness of the existing pipe socket end face is overcome, and the pipe core concrete 6 and the outer reinforced concrete protective layer 5 form a force-bearing whole during the jacking project, thereby improving the force-bearing performance and safety factor of the pipe socket end face during jacking construction.
[0023] The end of the JPCCP pipe includes: pipe core concrete 6, reinforced concrete protective layer 5, socket steel ring 4, and spigot steel ring 3. The inner and outer layers of the socket are stepped, and the length of the spigot position is longer than the length of the outer concrete layer. The spigot end face rigid reinforcement component includes: an annular steel ring 13; the annular steel ring 13 is attached to the surface of the concrete layer at the spigot end of the pipe, and the arrangement position is the top force surface of the spigot end. The reinforcement steel plate 14 is attached to the end face of the pipe by a structural adhesive specially used for steel bonding reinforcement, and the outer side is welded to the 50*8 steel ring 13 on the side of the pipe. The welding adopts the groove welding form to ensure the surface smoothness and weld strength, so that the rigid reinforcement component and the component are stressed together. Embodiment 2
[0024] See also Figure 1-Figure 3On the basis of the first embodiment, the rigid reinforcement component of the pipe socket end face is in contact with the pipe surface and is arranged at the contact surface of the entire jacking pipe; in addition to the full-circle annular steel ring 13 structure, the rigid reinforcement component can also be cut into equally divided fan-shaped steel plates and installed in sections to the end face of the socket. The combined area of the fan-shaped steel plates can be 2 / 3 of the full circle, saving steel materials.
[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A JPCCP pipe with a rigid reinforcement component on the end face of the spigot, comprising a steel cylinder (1), characterized in that: A socket steel ring (3) is welded to one side of the steel cylinder (1), a socket steel ring (4) is welded to the other side of the steel cylinder (1), a grouting hole (7) is arranged on the inner side of the socket steel ring (3), a grouting pipe (2) is arranged on the outer side of the socket steel ring (3), a pipe core concrete (6) is poured on the inner and outer sides of the steel cylinder (1), a prestressed steel wire (11) is wound around the outer side of the pipe core concrete (6), and a concrete protective layer (5) is poured on the outer side of the prestressed steel wire (11).
2. A JPCCP pipe with a rigid reinforcement component on the end face of the socket according to claim 1, characterized in that: A joint test water inlet hole (8) is arranged on the inner side of the socket steel ring (3), and rubber rings (9) are mounted on both sides of the joint test water inlet hole (8).
3. A JPCCP pipe with a rigid reinforcement component on the end face of the socket according to claim 2, characterized in that: The two ends of the socket steel ring (4) are folded, and the concrete protective layer (5) is a reinforced concrete protective layer or a fine stone concrete protective layer.
4. A JPCCP pipe with a rigid reinforcement component on the end face of the socket according to claim 3, characterized in that: A steel cage (10), prestressed steel wires (11) and anchor bars (12) are arranged inside the concrete protective layer (5), and a steel ring (13) is arranged on the outside of the anchor bars (12).
5. A JPCCP pipe with a rigid reinforcement component on the end face of the socket according to claim 4, characterized in that: A socket end surface reinforcement steel plate (14) is installed between the steel cylinders (1), and a wooden washer (15) is provided on the side of the socket end surface reinforcement steel plate (14).
6. A JPCCP pipe with a rigid reinforcement component on the end face of the socket according to claim 5, characterized in that: The outer end of the grouting pipe (2) is equipped with a threaded nut (16).