CN210179083U - Glass fiber reinforced polyester concrete jacking pipe - Google Patents
Glass fiber reinforced polyester concrete jacking pipe Download PDFInfo
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- CN210179083U CN210179083U CN201920623894.8U CN201920623894U CN210179083U CN 210179083 U CN210179083 U CN 210179083U CN 201920623894 U CN201920623894 U CN 201920623894U CN 210179083 U CN210179083 U CN 210179083U
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- polyester concrete
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Abstract
The utility model relates to a glass fiber reinforced polyester concrete top pipe. The jacking pipe jacking device mainly solves the technical problems that leakage can occur at an interface when a rubber ring fails due to overturning of the rubber ring or other reasons in the jacking process of a jacking pipe. The to-be-solved technical problem of the utility model is realized through following technical scheme: a glass fiber reinforced polyester concrete top pipe comprises a pipe body, a lantern ring and a sealing element, wherein the pipe wall of the pipe body is provided with an impermeable layer, an inner structure layer, a resin mortar layer, an outer structure layer and an outer protection layer from inside to outside. One end of the lantern ring and the pipe body are cast into an integral structure, and the outer edge of the other end of the lantern ring extends out to form a socket end of the interface; the other end of the pipe body is provided with two sealing grooves, wedge-shaped rubber rings are arranged in the sealing grooves, and a pressure testing hole is arranged between the two sealing grooves to form an interface socket end.
Description
Technical Field
The utility model relates to an underground piping construction push pipe, concretely relates to glass fiber reinforced polyester concrete push pipe.
Background
The trenchless technology is a construction method for laying, updating or repairing various underground pipelines by using trenchless equipment under the condition of the minimum area, and compared with the traditional slotting construction method, the trenchless technology has the advantages of no influence on traffic, no damage on environment, high construction speed, low comprehensive construction cost, remarkable social benefit, no influence on citizen life and the like.
As one of the non-excavation technical fields, the pipe jacking construction is an underground pipeline construction method developed after shield construction, which does not need to be excavated into layers and can pass through roads, railways, rivers, ground buildings, underground structures, various underground pipelines and the like, and the pipe jacking is generally used as a conventional construction method along with the development of economy in China and the enhancement of environmental awareness of people.
The pipe material of the top pipe is divided into reinforced concrete pipe, steel pipe, cast iron pipe and other novel pipe materials according to the material. A polyester Concrete Pipe (reinforced Plastic Concrete Pipe) which is one of novel pipes is a pipeline made of materials such as unsaturated polyester resin, mixed sand, a hardening agent and the like by a specific process method, and is characterized by light weight, high strength, axial compression strength which can reach more than one time of that of the traditional reinforced Concrete, and relatively common application in countries such as Europe and America; the polyester concrete pipe in China is applied later but developed faster, and particularly in Taiwan, the polyester concrete pipe is taken as a first-choice pipe for replacing the traditional reinforced concrete pipe and plays an increasingly important role in the fields of urban drainage, sewage treatment and the like.
The glass fiber reinforced polyester concrete pipe is a pipe which is made by taking quartz granules, unsaturated polyester resin mixture and glass fiber as main raw materials according to a winding/vibration forming method. Compared with the traditional reinforced concrete jacking pipe and the glass fiber reinforced plastic sand inclusion jacking pipe, the glass fiber reinforced polyester concrete jacking pipe has better mechanical and physical properties, and because the pipe wall is thin and the surface is smooth, the jacking force is greatly reduced, so that the construction cost is reduced, and the construction period is accelerated.
The most common glass fiber reinforced polyester concrete pipe in the market at present is that double-spigot pipe is more, and double-spigot pipe is also called "T" type lantern ring pipe, has seted up single seal groove promptly at pipeline both ends, connects it through middle lantern ring and seals. The pipeline has the disadvantages that two ends of the pipeline are connected with the lantern ring in an open manner, two leakage channels exist, the sealing effect is ensured by the compression of the rubber ring in the groove, once the rubber ring is overturned in the jacking process of the jacking pipe or the rubber ring fails due to other reasons, leakage occurs at the interface, and meanwhile, the sealing effect at a single interface cannot be verified by later measures; in addition, in the jacking process of the jacking pipe, the joint of the lantern ring and the pipe body is easy to open, so that the mud and sand enter slightly to cause sealing failure, and the lantern ring is torn seriously.
Disclosure of Invention
An object of the utility model is to provide a glass fiber reinforced polyester concrete push pipe, mainly solve push pipe jacking in-process and take place rubber circle upset or other rubber circle inefficacy that the reason arouses then the kneck can appear technical problem such as seepage promptly.
The to-be-solved technical problem of the utility model is realized through following technical scheme:
a glass fiber reinforced polyester concrete top pipe comprises a pipe body, a lantern ring and a sealing element, wherein the pipe wall of the pipe body is provided with an impermeable layer, an inner structure layer, a resin mortar layer, an outer structure layer and an outer protection layer from inside to outside. One end of the lantern ring and the pipe body are cast into an integral structure, and the outer edge of the other end of the lantern ring extends out to form a socket end of the interface; the other end of the pipe body is provided with two sealing grooves, wedge-shaped rubber rings are arranged in the sealing grooves, and a pressure testing hole is arranged between the two sealing grooves to form an interface socket end.
The inner side of the glass fiber reinforced plastic sleeve ring with the interface socket end and the pipe body connected into a whole is pre-provided with a glass fiber reinforced plastic thrust ring with a ring in the circumferential direction for further enhancing the connection between the glass fiber reinforced plastic sleeve ring and the pipe interface and preventing the axial movement of the glass fiber reinforced plastic thrust ring.
And a water-swelling water stop strip is arranged on the inner side (close to the pipe body) of the thrust ring along the circumferential direction.
When the thrust collar is not arranged in the glass fiber reinforced plastic lantern ring, the inner side of the glass fiber reinforced plastic lantern ring is a rough surface or is precoated with an epoxy resin layer so as to further increase the adhesive force between the lantern ring and the pipe body.
The side of the thrust ring close to the water stop strip is provided with a circumferential whole-circle positioning block. At least 1-3 grouting holes are arranged on the polyester concrete pipe body; the grouting holes are communicated with the interior of the polyester concrete pipe body.
The end face of the socket is provided with a guide angle to facilitate the insertion of the pipeline in the jacking process, and the guide angle is 15-18 degrees.
The female end of the interface is adhered with a wood gasket, the wood gasket is preferably a laminated plate, and the thickness of the wood gasket is 8-18 mm.
The utility model has the advantages that: the utility model discloses because five layer construction of pipe wall have stronger prevention of seepage ability, interface socket end and pipe shaft glass steel sleeve ring inside prefabrication as an organic whole have the glass steel thrust ring of hoop round for further strengthen the glass steel sleeve ring and be connected of pipe kneck, prevent its axial float. And a water-swelling water stop strip is arranged on the inner side (close to the pipe body) of the thrust ring along the circumferential direction. When the thrust collar is not arranged in the glass fiber reinforced plastic lantern ring, the inner side of the glass fiber reinforced plastic lantern ring is a rough surface or is precoated with an epoxy resin layer so as to further increase the adhesive force between the lantern ring and the pipe body. The end face of the socket is provided with a guide angle so as to facilitate the insertion of the pipeline in the jacking process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of an interface according to embodiment 1 of the present invention.
Fig. 3 is a schematic view of an interface according to embodiment 2 of the present invention.
Fig. 4 is a schematic view of the tube wall structure of the present invention.
Fig. 5 is a schematic view of the collar with positioning block of the present invention.
Fig. 6 is a schematic view of the socket end of the present invention.
Fig. 7 is a schematic view of the socket end of the present invention.
Fig. 8 is a schematic cross-sectional view of the grouting hole of the present invention.
Fig. 9 is a schematic view of the arrangement of grouting holes of the present invention.
Fig. 10 is a schematic view of the mold base of the present invention.
Fig. 11 is the assembly manufacturing schematic diagram of the female end of the present invention.
In the figure: 1-a pipe body; 2-a wedge-shaped rubber ring; 3-a collar; 4-a thrust ring; 5-water swelling sealing strip; 6-pressure test holes; 7-a wood washer; 8-barrier layer; 9-inner structural layer; 10-resin mortar layer; 11-an outer structural layer; 12-an outer protective layer; 13-glass reinforced plastic buffer layer; 14-positioning blocks; 15-sealing groove; 16-chamfering; 17-testing the pressure of the copper bolt; 18-grouting holes; 19-plug; 20-resin putty; 21-glass fiber reinforced cloth; 22-a mould base; 23-a chuck; 24-external mold; 25-internal mold.
Detailed Description
Example 1, referring to fig. 1, 2, 4, 5, 6, 7, 8, 9, 10, and 11, a glass fiber reinforced polyester concrete push pipe is composed of a pipe body 1, a collar 3, and a sealing member, and as shown in fig. 4, a pipe wall of the pipe body is composed of an impermeable layer 8, an inner structural layer 9, a resin mortar layer 10, an outer structural layer 11, and an outer protective layer 12 from inside to outside. The impermeable layer 8, the inner structure layer 9, the outer structure layer 11 and the outer protection layer 12 are manufactured by winding, spraying or hand pasting, and the resin mortar layer 10 is manufactured by a vibration forming method. The lantern ring 3 is a glass fiber reinforced plastic part, one end of the lantern ring 3 and the pipe body 1 are cast into an integral structure, and the outer edge of the other end extends out to form an interface socket end; the other end of the pipe body 1 is provided with two sealing grooves 15, wedge-shaped rubber rings 2 are arranged in the sealing grooves, and a pressure test hole 6 is arranged between the two sealing grooves to form an interface socket end.
The thickness of the glass fiber reinforced plastic lantern ring 3 is designed to be 5-10 mm according to the caliber of the pipe, the width is 220-320mm, the initial hoop tensile strength is not lower than 200Mpa, and the initial axial tensile strength is not lower than 100 Mpa.
The inner side of the glass fiber reinforced plastic sleeve ring with the interface socket end and the pipe body connected into a whole is pre-provided with a glass fiber reinforced plastic thrust ring 4 with a ring in the circumferential direction for further enhancing the connection between the glass fiber reinforced plastic sleeve ring and the pipe interface and preventing the axial movement. The width of the glass fiber reinforced plastic thrust ring 4 is 15-20 mm, the thickness is 6-12 mm, the thrust ring 4 is fixed with the lantern ring 3 through resin-based adhesive, and the glass fiber reinforced plastic thrust ring can also be manufactured through a hand pasting method.
A water-swelling water stop strip 5 is arranged on the inner side (close to the pipe body side) of the thrust ring 4 along the circumferential direction, the width of the water-swelling water stop strip 5 is 8-10 mm, and the thickness of the water-swelling water stop strip is 3-5 mm. The water-swelling seal rod 5 is bonded to the collar 3 by an adhesive.
As shown in fig. 5, a circumferential whole-circle positioning block 14 is formed on the side of the thrust ring close to the water-swelling water stop strip 5, and is directly clamped into a gap between the positioning block and the sleeve ring when the water stop strip is mounted, so that the mounting reliability of the water-swelling water stop strip 5 is improved.
Referring to fig. 10, the pipe making mold is composed of an outer mold 24, an inner mold 25 and a mold base 22. The pipeline manufacturing process comprises the following steps:
sleeving the glass fiber reinforced plastic lantern ring 3 into a specific mould base 22, and fixing the outer side of the glass fiber reinforced plastic lantern ring through a chuck 23; one end of the lantern ring is tightly attached to the outer mold, demolding wax is coated on the mold base 22, the glass fiber reinforced plastic buffer layer 13 on the end face of the pipeline is manufactured through a hand pasting method, the glass fiber reinforced plastic buffer layer 13 is formed by paving 3-4 layers of resin-impregnated 450g/m2 chopped strand mats, the resin content is controlled to be 50% -60%, the glass fiber reinforced plastic buffer layer 13 and a glass fiber reinforced plastic sleeve are connected into a whole, one function of the glass fiber reinforced plastic buffer layer is seepage prevention, and the other function of the glass fiber reinforced plastic buffer layer is to prevent the polyester concrete layer between the inner protective layer and the outer protective layer from being layered due to stress of. When the pipeline is manufactured, the prefabricated impermeable layer 8 and the prefabricated inner structure layer 9 are sleeved into the inner mold 25, the outer structure layer 11 and the outer protection layer 12 are attached to the inner wall of the outer mold 24, and a natural cavity is formed between the outer mold 24 and the inner mold 25. And injecting the resin mortar which is stirred in advance into the natural cavity, and vibrating to form the resin mortar layer 10.
After the pipeline vibration is finished, the inner mold, the outer mold, the mold base assembly and the pipeline formed between the inner mold and the outer mold are integrally placed in an oven for heating and curing, the temperature of the oven is controlled to be 70-80 ℃, and the heating and curing time is controlled to be different within 2-5 hours according to different pipe diameters of the pipeline.
And (3) demolding the pipeline after the solidification is finished, removing the outer mold, removing the mold base chuck and extracting the pipeline, wherein the glass fiber reinforced plastic lantern ring 3 and the pipe body 1 are connected into a whole.
The pipeline is arranged on a special trimming machine, two sealing grooves 15 are trimmed at one end without the glass fiber reinforced plastic sleeve ring, and wedge-shaped rubber rings 2 are arranged in the sealing grooves to form an interface socket end. The wedge-shaped rubber ring in the sealing groove is preferably a water-swelling rubber ring, the swelling resolution of the water-swelling rubber ring is 220% -300%, and natural rubber, ethylene propylene diene monomer, chloroprene rubber and the like can also be adopted. The wedge-shaped rubber ring 2 is adhered in the sealing groove 15. The sizes of the wedge-shaped rubber ring 2 and the sealing groove 15 adopt different design schemes according to the pipe diameter and the pressure grade. Before leaving the factory, the wedge-shaped rubber ring is bonded in the sealing grooves, a pressure test hole 6 is formed between two sealing grooves 15, the diameter of the pressure test hole 6 is 10-12 mm, a countersunk head copper bolt 17 is installed in the pressure test hole 6, the countersunk head copper bolt 17 is hollow inside, an internal thread is arranged in a cavity facing the inside of the pipeline, the pressure test pipeline is connected to the internal thread to pump water for pressure test during pressure test, and after the pressure test is completed, an external copper plug is used for plugging.
In the pipe jacking construction process, in order to reduce the frictional resistance between the pipe body and the soil layer, at least one grouting hole 18 is formed in the polyester concrete pipe body; the grout holes 18 communicate with the inside of the polyester concrete pipe body. Thixotropic slurry is sprayed to the outside of the pipeline through the grouting holes 18, so that the soil of the underground layer is diluted and lubricated, and the pipeline is convenient to jack. As shown in fig. 9, three grouting holes 18 are provided in the present embodiment, and the three grouting holes 18 are uniformly distributed along the circumference of the polyester concrete pipe body at circumferential angles of 120 ° from each other. Multidirectional uniform grouting and good lubricating and diluting effects. As shown in fig. 8, the grouting hole 18 is provided with internal threads, and after grouting is completed, the grouting hole is plugged by a stainless steel plug 19, and resin putty 20 is filled in the grouting hole to encapsulate glass fiber reinforced cloth 21.
The end face of the socket is provided with a guide angle 16 to facilitate the insertion of the pipeline in the jacking process, and the angle of the guide angle 16 is 15-18 degrees.
The end face of the socket is adhered with a wood gasket 7, and the wood gasket 7 is preferably a laminated plate and has the thickness of 8-18 mm.
Based on the characteristic that the two wedge-shaped rubber rings 2 at the socket are water-swelling rubber rings, water can be injected into the sealing groove 15 in advance through the pressure test hole when the jacking pipe is subjected to pressure test after jacking, the pressure test hole 6 is sealed for 2-3 days, and the wedge-shaped rubber rings are swelled for pressure test.
Once the water seepage phenomenon at the interface is discovered during pressure test, polyurethane foam material can be injected into the sealing groove 15 through the pressure test hole to implement later-stage remedial plugging.
Example 2, referring to fig. 3, the inner side of the glass reinforced plastic sleeve is ground to form a rough surface or coated with epoxy resin before vibration grouting to further increase the adhesion between the sleeve and the pipe body without a thrust collar. The rest is the same as example 1.
Claims (10)
1. A glass fiber reinforced polyester concrete top pipe is characterized in that: the pipe comprises a pipe body, a sleeve ring and a sealing element, wherein the pipe wall of the pipe body is provided with an impermeable layer, an inner structural layer, a resin mortar layer, an outer structural layer and an outer protective layer from inside to outside; the other end of the pipe body is provided with two sealing grooves, wedge-shaped rubber rings are arranged in the sealing grooves, and a pressure testing hole is arranged between the two sealing grooves to form an interface socket end.
2. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: the inner side of the lantern ring is provided with a thrust ring which is annularly wound.
3. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: the inner side of the lantern ring is a rough surface or a precoated epoxy resin layer.
4. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: a water-swelling water stop strip is bonded in the lantern ring.
5. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: and a pressure test copper bolt is arranged in the pressure test hole.
6. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: the end face of the interface socket end is provided with a glass fiber reinforced plastic buffer layer.
7. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: the interface socket end is bonded with a wood gasket.
8. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: 1-3 grouting holes are arranged at the end of the interface socket.
9. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: when the number of the grouting holes is 3, the grouting holes are uniformly distributed at three points in the 120-degree direction along the circumferential direction of the pipe body.
10. The glass fiber reinforced polyester concrete ceiling coil of claim 1, wherein: the interface socket end is provided with a lead angle which is 15-18 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623894.8U CN210179083U (en) | 2019-05-05 | 2019-05-05 | Glass fiber reinforced polyester concrete jacking pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623894.8U CN210179083U (en) | 2019-05-05 | 2019-05-05 | Glass fiber reinforced polyester concrete jacking pipe |
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| Publication Number | Publication Date |
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| CN210179083U true CN210179083U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920623894.8U Active CN210179083U (en) | 2019-05-05 | 2019-05-05 | Glass fiber reinforced polyester concrete jacking pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946355A (en) * | 2020-08-24 | 2020-11-17 | 中铁十八局集团有限公司 | Construction method for long-distance rock jacking pipe to penetrate through water-rich fault |
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2019
- 2019-05-05 CN CN201920623894.8U patent/CN210179083U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946355A (en) * | 2020-08-24 | 2020-11-17 | 中铁十八局集团有限公司 | Construction method for long-distance rock jacking pipe to penetrate through water-rich fault |
| CN111946355B (en) * | 2020-08-24 | 2022-07-15 | 中铁十八局集团有限公司 | Construction method for long-distance rock jacking pipe to penetrate through water-rich fault |
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