Pipe jacking launching well structure
By designing a pipe starting well structure with a starting well body, strip reinforcement, rear plate and top tube, the safety problem of the starting well under huge pressure and gravity during top tube construction is solved, and the stability and construction efficiency of the structure are improved.
Patent Information
- Application Number
- CN202421787861.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the pipe top construction, the starting well needs to withstand huge pressure and gravity, especially in areas with abundant groundwater and high water levels, waterproofing measures need to be taken, resulting in low construction complexity and safety.
A pipe starting well structure is designed, including a pipe starting well body, strip reinforcement, rear plate and top tube. Through the combination of these components, the structure is strengthened, the structure can be effectively withstand huge pressure and gravity, and the pushing device is supported by the rear plate to ensure the overall stability of the structure.
The structure is simple and has high safety, and can effectively support the pushing device, which improves the efficiency and safety of the pipe construction, and is suitable for areas with abundant groundwater.
Smart Images
Figure CN223018625U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipe jacking construction, and particularly relates to a pipe jacking launching shaft structure. Background Art
[0002] Underground pipelines are pipelines laid underground for transporting gases, liquids or solids, such as underground water inlet pipes, drain pipes, gas pipes or telecommunications cable pipes, etc. During the process of laying underground pipelines, when it may be in a traffic fortress in the urban area and it is impossible to carry out open-cut direct burial and truss overhead passing, pipe jacking technology is mostly used. Pipe jacking technology is a non-excavation pipe laying technology. It does not require excavation of the ground, can cross ground structures and underground pipelines, does not need to block traffic, and has little impact on the surrounding construction. During the pipe jacking construction process, the launching shaft needs to bear huge pressure and gravity. If the construction area is in an area with rich groundwater and high water level, necessary waterproof measures also need to be taken. For this reason, a pipe jacking launching shaft structure with high safety is required to ensure the safe and smooth completion of pipe jacking construction. Summary of the Invention
[0003] Aiming at the deficiencies existing in the related technologies, the purpose of the utility model is to provide a pipe jacking launching shaft structure to solve the problems put forward in the above background art.
[0004] To achieve the above purpose, the utility model provides the following technical solutions:
[0005] A pipe jacking launching shaft structure, comprising:
[0006] A launching shaft body, the launching shaft body is a rectangular body with an open top, and a working opening is arranged on one side of the launching shaft body;
[0007] A strip-shaped reinforcing member, the strip-shaped reinforcing member is arranged at the open top of the launching shaft body;
[0008] A backplate, the backplate is arranged inside the main body of the launching shaft, on one side of the launching shaft body, the backplate is arranged opposite to the working opening, and the backplate is used to support the jacking device;
[0009] A pipe jack, the pipe jack is arranged inside the main body of the launching shaft, and the pipe jack is located at the working opening;
[0010] Among them, there are four strip-shaped reinforcing members, each strip-shaped reinforcing member is fixedly connected to the top edge of one side of the launching shaft body, and the heads and tails of the four strip-shaped reinforcing members are fixedly connected to each other.
[0011] In some embodiments, the pipe jack includes at least one pipe jacking pipe section, and the pipe jacking pipe section is a rectangular ring.
[0012] In some of these embodiments, the jacking pipe launching shaft structure further includes a first embedded steel pipe, which is embedded in the jacking pipe segment. The first end of the first embedded steel pipe is flush with the outer wall of the jacking pipe segment, and the second end of the first embedded steel pipe is located inside the jacking pipe segment.
[0013] In some of these embodiments, the length of the first embedded steel pipe is less than half of the distance from the inner wall to the outer wall of the jacking pipe segment.
[0014] In some of these embodiments, two of the first embedded steel pipes are respectively provided on each side of the jacking pipe segment.
[0015] In some of these embodiments, the jacking pipe launching shaft structure further includes a second embedded steel pipe, which is embedded in the jacking pipe segment. The first end of the second embedded steel pipe is flush with the outer wall of the jacking pipe segment, and the second end of the second embedded steel pipe is flush with the inner wall of the jacking pipe segment.
[0016] In some of these embodiments, ten of the second embedded steel pipes are provided on each jacking pipe segment.
[0017] In some of these embodiments, the second embedded steel pipe is a grouting pipe.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0019] 1. The jacking pipe launching shaft structure provided by the present utility model is composed of a launching shaft body, strip-shaped reinforcement members, a backrest plate and a jacking pipe. The structure is simple, can withstand huge pressure and gravity, and has high safety.
[0020] 2. The backrest plate included in the jacking pipe launching shaft structure provided by the present utility model can provide force support and transmission for the jacking device, ensure the overall stability of the structure, and improve the efficiency of jacking pipe construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0022] Figure 1 is a top view of the structure of an embodiment of the jacking pipe launching shaft structure of the present utility model;
[0023] Figure 2 is a front view of the structure of an embodiment of the jacking pipe launching shaft structure of the present utility model;
[0024] Figure 3 is a side view of the structure of an embodiment of the jacking pipe launching shaft structure of the present utility model;
[0025] Figure 4 Schematic diagram of a pipe-jacking pipe section for an embodiment of the pipe-jacking launching shaft structure of the present utility model;
[0026] Figure 5 Schematic diagram of the construction application for an embodiment of the pipe-jacking launching shaft structure of the present utility model.
[0027] In the figure:
[0028] 1. Launching shaft body; 11. Working opening; 2. Strip-shaped reinforcement; 3. Backing plate; 4. Pipe-jacking pipe; 41. Pipe-jacking pipe section; 5. First embedded steel pipe; 6. Second embedded steel pipe. Specific embodiments
[0029] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model.
[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" 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 direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0032] Refer to the attached Figures 1 to 5 , which gives a schematic embodiment of the pipe-jacking launching shaft structure proposed by the present utility model. The pipe-jacking launching shaft structure includes a launching shaft body 1, a strip-shaped reinforcement 2, a backing plate 3, and a pipe-jacking pipe 4.
[0033] Refer to the attached Figure 2 and Figure 3, the launching shaft body 1 is a rectangular body with an open top, and a working opening 11 is provided on one side of the launching shaft body 1. The strip-shaped reinforcement member 2 is provided at the open top of the launching shaft body 1. The backrest plate 3 is arranged inside the main body of the launching shaft, on one side of the launching shaft body 1, and the backrest plate 3 is arranged opposite to the working opening 11, and the backrest plate 3 is used to support the jacking device. The jacking pipe 4 is arranged inside the main body of the launching shaft, and the jacking pipe 4 is located at the working opening 11.
[0034] See Appendix Figure 1 , in this embodiment, there are four strip-shaped reinforcement members 2, and each strip-shaped reinforcement member 2 is fixedly connected to the top edge of one side surface of the launching shaft body 1, and the head and tail of the four strip-shaped reinforcement members 2 are fixedly connected to each other. The setting of the strip-shaped reinforcement member 2 enhances the firmness of the launching shaft body 1 and extends the service life of the launching shaft body 1. The strip-shaped reinforcement member 2 can be selected from the same high-strength material as the launching shaft body 1 to be able to withstand the tests of various environmental factors and ensure the stability and reliability of the launching shaft body 1 during long-term use.
[0035] See Appendix Figure 4 and Figure 5 , in this embodiment, the jacking pipe 4 includes at least one section of jacking pipe section 41, and the jacking pipe section 41 is a rectangular ring. Jacking pipe construction is to generate jacking force with the help of a jacking device in a working pit, overcome the frictional force between the jacking pipe 4 and the surrounding soil, jack the jacking pipe 4 into the soil according to the designed slope, and transport the soil away. In order to effectively reduce the stress concentration problem caused by long-distance jacking, the jacking pipe 4 is divided into several shorter jacking pipe sections 41 for segmented jacking, reducing the jacking force of each section, thereby reducing the construction difficulty and risk.
[0036] To facilitate hoisting and placing the jacking pipe section 41 into the launching shaft body 1 for subsequent jacking construction work, see Appendix Figure 4 , the jacking pipe launching shaft structure further includes a first embedded steel pipe 5, the first embedded steel pipe 5 is embedded in the jacking pipe section 41, the first end of the first embedded steel pipe 5 is flush with the outer wall of the jacking pipe section 41, and the second end of the first embedded steel pipe 5 is located inside the jacking pipe section 41. The length of the first embedded steel pipe 5 is less than half of the distance from the inner wall to the outer wall of the jacking pipe section 41. In this embodiment, the distance from the inner wall to the outer wall of the jacking pipe section 41 is 700 mm, and the length of the first embedded steel pipe 5 is 200 mm. The first embedded steel pipe 5 can be selected as a steel pipe with an outer diameter of 120 mm and a wall thickness of 8 mm, which has good corrosion resistance and strength.
[0037] See Appendix Figure 4 , in this embodiment, in order to be able to hoist and turn over the jacking pipe section 41, two first embedded steel pipes 5 are respectively provided on each side of the jacking pipe section 41, that is, eight first embedded steel pipes 5 are provided on each section of the jacking pipe section 41.
[0038] Continue to see Appendix Figure 4, in this embodiment, the structure of the jacking pipe launching shaft further includes a second embedded steel pipe 6, which is embedded in the jacking pipe segment 41. The first end of the second embedded steel pipe 6 is flush with the outer wall of the jacking pipe segment 41, and the second end of the second embedded steel pipe 6 is flush with the inner wall of the jacking pipe segment 41. Each jacking pipe segment 41 is provided with ten second embedded steel pipes 6. The second embedded steel pipe 6 is a grouting pipe. During the jacking pipe construction process, the soil will deform and the structure will become loose under the action of force. By injecting a specific grout into the soil, grouting can not only reinforce the soil, improve its bearing capacity and stability, but also effectively improve the permeability of the soil, reduce water loss, and prevent soil particles from being carried away by the water flow, thereby avoiding the occurrence of phenomena such as quicksand and soil flow. It ensures the safety of the jacking pipe construction and the stability of surrounding buildings, and ensures the smooth progress of the jacking pipe construction.
[0039] In the above-mentioned illustrative embodiment, the structure of the jacking pipe launching shaft consists of a launching shaft body, strip-shaped reinforcement members, a backplate and a jacking pipe. The structure is simple, can withstand huge pressure and gravity, and has high safety. The setting of the backplate can provide force support and transmission for the jacking device, ensure the overall stability of the structure, and improve the efficiency of the jacking pipe construction.
[0040] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.
[0041] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still can modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.
Claims
1. A pipe jacking launching well structure, characterized in that: include: A starting well body, wherein the starting well body is a rectangular body with an opening at the top, and a working opening is formed on one side of the starting well body; A strip reinforcement member, the strip reinforcement member being arranged at the top opening of the starting well body; A back plate, the back plate is arranged in the main body of the launching well, located on one side of the launching well body, the back plate is arranged opposite to the working opening, and the back plate is used to support the pushing device; A jacking pipe, the jacking pipe is arranged in the main body of the launching well, and the jacking pipe is located at the working opening; There are four strip reinforcement members, each of which is fixedly connected to the top edge of one side of the starting well body, and the heads and tails of the four strip reinforcement members are fixedly connected to each other.
2. The pipe jacking launching well structure according to claim 1, characterized in that: The jacking pipe comprises at least one jacking pipe section, and the jacking pipe section is a rectangular ring.
3. The pipe jacking launching well structure according to claim 2, characterized in that: It also includes a first embedded steel pipe, which is embedded in the top pipe section, the first end of the first embedded steel pipe is flush with the outer wall of the top pipe section, and the second end of the first embedded steel pipe is located in the top pipe section.
4. The pipe jacking launching well structure according to claim 3, characterized in that: The length of the first embedded steel pipe is less than half of the distance from the inner wall to the outer wall of the top pipe segment.
5. The pipe jacking launching well structure according to claim 3, characterized in that: Two of the first embedded steel pipes are respectively arranged on each side of the jacking pipe segment.
6. The pipe jacking launching well structure according to claim 2, characterized in that: It also includes a second embedded steel pipe, which is embedded in the top pipe section, the first end of the second embedded steel pipe is flush with the outer wall of the top pipe section, and the second end of the second embedded steel pipe is flush with the inner wall of the top pipe section.
7. The pipe jacking launching well structure according to claim 6, characterized in that: Each of the jacking pipe sections is provided with ten of the second embedded steel pipes.
8. The pipe jacking launching well structure according to claim 6, characterized in that: The second embedded steel pipe is a grouting pipe.