CN219140040U

CN219140040U - Vertical jacking steel pipe joint

Info

Publication number: CN219140040U
Application number: CN202222590008.0U
Authority: CN
Inventors: 耿小飞; 曹德万; 刘宗钦; 陈锦; 马建; 刘成
Original assignee: Zhongyifeng Tunnel Engineering Co ltd
Current assignee: Zhongyifeng Tunnel Engineering Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-06-06
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a vertical jacking steel pipe joint which is characterized by comprising a pipe joint main body of a steel structure, wherein an annular groove is formed in the inner side of the pipe joint main body, a plurality of anchor bars are welded in the annular groove, a plurality of screw holes are formed in the pipe joint main body above the annular groove in the circumferential direction, two sealing grooves are formed in the top surface of the pipe joint main body, and all the screw holes are arranged between the two sealing grooves; the pipe joint main body is welded with a cover type nut or penetrates through and is welded with a connecting bolt in the annular groove at the screw hole, high-strength concrete is filled in the annular groove, and the anchor bars and the cover type nut or the connecting bolt are buried in the high-strength concrete. The utility model can meet the requirements of construction and use, and has high safety, high installation speed and good water stopping effect.

Description

Vertical jacking steel pipe joint

Technical Field

The utility model belongs to the technical field of pipe joints, and particularly relates to a vertical jacking steel pipe joint.

Background

In recent years, with the increasing speed of urban progress, environmental protection of cities has become particularly important, and pipe jacking has been widely applied to underground pipeline projects such as water supply, drainage, electric power and the like. Along with the maturation of the pipe jacking technology, in the pipe jacking main pipeline for water taking and pollution discharge, in order to solve the problems of water intake and water taking and discharging, a vertical jacking technology is generally adopted. At present, the vertical pipe-jacking pipe joints are all steel pipe joints, and the pipe joints are connected in a welded mode and also in a bolt mode, but in the aspect of stopping, only a welded stopping mode can be adopted, and after the next pipe joint is installed, a stopping device is cut off. The vertical jacking has high requirements on stopping and water stopping when the pipe joint is jacked, and if the pipe joint is backed or leaked in construction, the safety risk is high. Meanwhile, the upward lifting has high stress requirement on the pipe joint, and the pipe joint must have enough strength and rigidity.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the vertical jacking steel pipe joint can meet construction and use requirements, and is high in safety, high in installation speed and good in water stopping effect.

In order to achieve the technical effects, the utility model adopts the following technical scheme:

the vertical jacking steel pipe joint is characterized by comprising a pipe joint main body of a steel structure, wherein an annular groove is formed in the inner side of the pipe joint main body, a plurality of anchor bars are welded in the annular groove, a plurality of screw holes are formed in the pipe joint main body above the annular groove in the circumferential direction, two sealing grooves are formed in the top surface of the pipe joint main body, and all the screw holes are arranged between the two sealing grooves; the pipe joint main body is welded with a cover type nut or penetrates through and is welded with a connecting bolt in the annular groove at the screw hole, high-strength concrete is filled in the annular groove, and the anchor bars and the cover type nut or the connecting bolt are buried in the high-strength concrete.

Further, the pipe joint main body is provided with a round steel pipe, an upper annular plate and a lower annular plate, wherein the centers of the round steel pipe, the upper annular plate and the lower annular plate are aligned, the inner diameter and the outer diameter of the upper annular plate are identical, the outer diameter of the upper annular plate and the outer diameter of the lower annular plate are identical, the inner diameter of the upper annular plate and the outer diameter of the lower annular plate are smaller than the inner diameter of the round steel pipe, the upper annular plate and the lower annular plate are correspondingly welded on the upper end face and the lower end face of the round steel pipe in a sealing mode, and the annular grooves are formed by the opposite faces of the two annular plates and the inner wall of the round steel pipe in a surrounding mode.

Further, screw holes are formed in the upper annular plate and the lower annular plate, the positions of the upper screw hole and the lower screw hole are corresponding, and cover nuts are welded at the screw holes.

Further, the bottom surface of the lower annular plate is welded with a convex flange aligned with the center of the lower annular plate in a sealing manner, the inner diameter of the flange is the same as that of the lower annular plate, and the positions of flange holes on the flange are correspondingly consistent with those of screw holes on the upper annular plate.

Further, rib plates are arranged between every two adjacent flange holes at the lower end of the flange, and three end faces of the rib plates are correspondingly welded on the two outer walls of the flange and the bottom face of the lower annular plate.

Further, connecting bolts are welded at screw holes of the upper annular plate.

Further, a cover nut is welded at the screw hole of the upper annular plate.

Further, the inner surface and the outer surface of the pipe joint body are both sprayed with anti-corrosion coatings.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the annular groove of the steel pipe joint main body is filled with high-strength concrete, the cover nuts or the connecting bolts are embedded, and the top surface of the steel pipe joint main body is provided with two sealing grooves, so that the strength and the rigidity of the steel pipe joint are improved, and the joint seam water is stopped during connection.

The foregoing description is only an overview of the present utility model, and may be implemented in accordance with the teachings of the present specification, so that the foregoing and other objects, features, and advantages of the present utility model may be more readily understood, and further detailed description of the present utility model may be had by reference to the accompanying drawings and examples, it being apparent that the examples described are some, but not all, of the embodiments of the utility model.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a top view of a first embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a second embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a third embodiment of the present utility model.

In the figure:

1. a pipe section main body; 11. an upper annular plate; 111. a screw hole;

112. sealing grooves; 12. round steel pipes; 13. a lower annular plate;

14. a flange; 15. rib plates; 16. a connecting bolt;

17. anchor bars; 18. a cap nut; 2. high-strength concrete.

Detailed Description

Example 1

The embodiment is a first-section steel pipe joint of a lifting pipe in the vertical jacking construction process, and as shown in fig. 1 and 2, the steel pipe joint comprises a pipe joint main body 1 and a high-strength concrete 2 filling body. The pipe joint main body 1 is composed of an upper annular plate 11, a round steel pipe 12 and a lower annular convex flange 14 which are in sealing welding connection and are aligned in the center from top to bottom. The inner diameter and the outer diameter of the upper annular plate 11 and the lower annular plate 13 are the same, the outer diameter is the same as the outer diameter of the round steel pipe 12, the inner diameter is smaller than the inner diameter of the round steel pipe 12, and the inner diameter of the flange 14 is the same as the inner diameter of the upper annular plate 13 and the lower annular plate 13. A plurality of screw holes 111 are circumferentially arranged on the upper annular plate 11, and the positions of the screw holes 111 are correspondingly consistent with those of the flange holes on the flange 14. The outside of the flange 14 is provided with rib plates 15, the rib plates 15 are radially arranged between two adjacent flange holes, and three end faces of the rib plates 15 are welded and fixed with the outer wall of the flange 14 and the bottom face of the lower annular plate 13. The upper surface of the upper annular plate 11 is also provided with two sealing grooves 112, and all screw holes 111 are arranged between the two sealing grooves 112. The upper annular plate 11, the lower annular plate 13 and the pipe steel pipe are surrounded to form an annular groove, and connecting bolts 16 and anchor bars 17 are arranged in the annular groove and filled with high-strength concrete 2. The connecting bolt 16 passes through the screw hole 111 upwards, and the head of the connecting bolt 16 is welded and fixed with the upper annular plate 11; the anchor rib 17 includes a nail-shaped rib welded to the inner wall of the pipe steel pipe and a support rib (not shown) whose upper and lower ends are welded to the upper and lower annular plates 13, respectively. In order to strengthen the anti-corrosion performance of the steel pipe joint, the whole inner and outer surfaces of the steel pipe joint are also sprayed with anti-corrosion coatings after welding and forming and before filling the high-strength concrete 2.

Embodiment two:

the present embodiment is a middle steel pipe section of a riser in a vertical jacking construction process, as shown in fig. 3, the steel pipe section has substantially the same structure as that of the first embodiment except that the upper annular plate 11 of the steel pipe section is welded with a cap nut 18 at the lower end of the screw hole 111.

Example III

The present embodiment is a steel pipe section at the tail of the lifting pipe in the vertical jacking construction process, as shown in fig. 4, the difference between the steel pipe section structure and the middle steel pipe section of the second embodiment is that the lower end of the steel pipe section is not provided with a flange 14, the lower annular plate 13 is identical to the upper annular plate 11, screw holes 111 corresponding to the positions of the upper annular plate 11 one by one are provided, and a cover nut 18 is welded above the screw holes 111.

In the jacking construction of the utility model, the lower end of the upper section of the steel pipe section is connected with the upper end of the lower section, and the cement is quickly smoothed at the upper bolt position before jacking, so that the water is prevented from leaking from the position. After the lifting of a section of steel pipe joint is completed, the retaining pin is inserted into the bolt position on the steel pipe joint through the pin hole welded on the hole flange, so that the retaining of the steel pipe joint is achieved. And the surface of the steel pipe joint is sprayed with anti-corrosion paint to prevent the pipe joint from being corroded. Anchor bars are embedded in the inner pipe wall, high-strength concrete is used for trowelling, and the concrete can be better bonded with the steel pipe joints under the action of the anchor bars. The steel pipe joint is not smooth, under the action of water flow, the anti-corrosion paint is easy to remove the protection effect, and the surface is covered and protected by concrete, so that the pipe joint is protected, and the service life is prolonged. 2 pre-buried seal grooves of water stop rubber strips are reserved at the upper port of the steel pipe joint and are used for stopping water at the joint seam of the pipe joint. The steel pipe joint meets the construction and use requirements, has high safety, high installation speed, good water stopping effect and simple manufacture, and has wide application prospect.

The present utility model is not limited to the above-described specific embodiments, and it is apparent to those skilled in the art from the above-described idea that various modifications can be made without inventive step and without departing from the scope of the present utility model.

Claims

1. The vertical jacking steel pipe joint is characterized by comprising a pipe joint main body of a steel structure, wherein an annular groove is formed in the inner side of the pipe joint main body, a plurality of anchor bars are welded in the annular groove, a plurality of screw holes are formed in the pipe joint main body above the annular groove in the circumferential direction, two sealing grooves are formed in the top surface of the pipe joint main body, and all the screw holes are arranged between the two sealing grooves; the pipe joint main body is welded with a cover type nut or penetrates through and is welded with a connecting bolt in the annular groove at the screw hole, high-strength concrete is filled in the annular groove, and the anchor bars and the cover type nut or the connecting bolt are buried in the high-strength concrete.

2. The vertical jacking steel pipe joint according to claim 1, wherein the pipe joint main body is provided with a round steel pipe, an upper annular plate and a lower annular plate which are aligned in the center, the inner diameter and the outer diameter of the upper annular plate and the outer diameter of the lower annular plate are the same, the inner diameter of the upper annular plate and the outer diameter of the lower annular plate are smaller than the inner diameter of the round steel pipe, the upper annular plate and the lower annular plate are correspondingly welded on the upper end face and the lower end face of the round steel pipe in a sealing mode, and the annular grooves are formed by encircling opposite faces of the two annular plates and the inner wall of the round steel pipe.

3. The vertical jacking steel pipe joint according to claim 2, wherein screw holes are formed in the upper annular plate and the lower annular plate, the positions of the upper screw holes and the lower screw holes are corresponding, and cover nuts are welded at the screw holes.

4. A vertical jacking steel pipe joint as claimed in claim 2, wherein the bottom surface of said lower annular plate is sealed and welded with a flange of convex shape aligned with the center thereof, the inner diameter of said flange is the same as the inner diameter of the lower annular plate, and the positions of the flange holes on the flange are corresponding to the positions of the screw holes on the upper annular plate.

5. The vertical jacking steel pipe joint according to claim 4, wherein a rib plate is arranged between every two adjacent flange holes at the lower end of the flange, and three end faces of the rib plate are correspondingly welded on the two outer walls of the flange and the bottom face of the lower annular plate.

6. The vertical lift steel pipe joint of claim 5, wherein the screw holes of the upper annular plate are welded with connecting bolts.

7. The vertical lift steel pipe joint of claim 5, wherein a cap nut is welded to the screw hole of the upper annular plate.

8. A vertical jacking steel tube segment as defined in any one of claims 1 to 7, wherein said tube segment body is coated with corrosion resistant coatings on both the inner and outer surfaces thereof.