CN108443612A - RC pipejacking tube coupling connector - Google Patents
RC pipejacking tube coupling connector Download PDFInfo
- Publication number
- CN108443612A CN108443612A CN201810644366.0A CN201810644366A CN108443612A CN 108443612 A CN108443612 A CN 108443612A CN 201810644366 A CN201810644366 A CN 201810644366A CN 108443612 A CN108443612 A CN 108443612A
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- Prior art keywords
- tube coupling
- steel
- wall
- pipejacking
- collar
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The present invention relates to trenchless engineering pipe-jacking technology fields, more particularly to RC pipejacking tube coupling connector, interface of the connector between adjacent preceding tube coupling and rear tube coupling, the connecting component of connector includes at least tube coupling outer wall sealed connection part and tube coupling inner wall sealing connecting component, tube coupling outer wall sealed connection part includes at least the socket steel ring positioned at the bellmouth steel collar of preceding tube coupling rear end and positioned at rear tube coupling front end, tube coupling inner wall sealing component includes at least preceding tube coupling and is respectively equipped with a steel collar with rear tube coupling inner wall, each steel collar includes at least the steel loop of annular and the beam slab of annular, beam slab front and rear sides are uniformly distributed floor and have bolt hole, the position of floor and bolt hole is interlaced, preceding tube coupling is corresponded with the bolt hole position on rear tube coupling beam slab, mutual corresponding bolt hole is connected by bolt and nut.The technical program, which can fully meet electric power push pipe etc., has the needs of high waterproof requirement engineering, and the complicated constructions environment such as can adapt to high hydraulic pressure, soft stratum.
Description
Technical field
The present invention relates to trenchless engineering pipe-jacking technology field more particularly to RC pipejacking tube coupling connectors.
Background technology
In recent years, with the quickening of social modernization's process, trenchless technology especially pipe-jacking technology is promptly pushed away
Wide and application.Pipe-jacking technology is widely used in municipal works field, and wherein electric power push pipe is laid with for the underground crossing of cable,
Based on Large-diameter Steel reinforced concrete pipe, interface form is mainly F shaped steel bellmouths.Waterproof of the electric power jacking construction to tube coupling connector
Performance requirement is high, but occurs the case where tube coupling connector leak in numerous engineering projects.Especially high hydraulic pressure flabbily
Layer, traditional wedge-shaped rubber circle or O-ring can not bear enough hydraulic pressure and achieve the effect that be fully sealed, such as middle promulgated by the State Council
What is used in bright patent " jacking pipe joints joint waterproofing structure " (CN201420365024) is exactly wedge-shaped rubber circle.Further, since
The differential settlement of pipeline, the compression unevenness on the one hand easily causing sealing rubber ring make its sealing effect weaken, another party
Face then can generate larger load action to tube coupling bellmouth steel collar, and steel bushing annular strain is caused to hinder tube coupling jacking construction.
Invention content
To solve the above-mentioned problems, it needs to design a kind of connector for adapting to seal demand in tube coupling jack-in process.
Technical solution provided by the invention is a kind of RC pipejacking tube coupling connector, and the connecting component of connector is at least wrapped
Tube coupling outer wall sealed connection part and tube coupling inner wall sealing connecting component are included, the tube coupling outer wall sealed connection part includes at least
Socket steel ring positioned at the bellmouth steel collar of preceding tube coupling rear end and positioned at rear tube coupling front end, socket steel ring are equipped with the above annular together
Groove, annular groove are embedded with the rubber ring of annular；The tube coupling inner wall sealing component includes at least in preceding tube coupling and rear tube coupling
Wall is respectively equipped with a steel collar, and each steel collar includes at least the steel loop of annular and the beam slab of annular, beam slab are located in steel loop
The adjacent side of side, two steel loops offers the mutual corresponding groove of notch respectively, is set in two grooves there are one high resiliency rubber
Offset plate, the gap between the high elastic rubber plate and two grooves are filled out respectively equipped with tile pressing steel plate, beam slab front and rear sides
Be uniformly distributed floor, beam slab is provided with bolt hole, and the position of floor and bolt hole is interlaced, preceding tube coupling on rear tube coupling beam slab
Bolt hole position corresponds, and mutual corresponding bolt hole is connected by bolt and nut.
Moreover, the mutual corresponding annular groove in position is had in the middle part of preceding tube coupling and the tube wall of rear tube coupling contact face, two
It is equipped with water expandable waterstop between in a annular groove, elastic sheeting caps is provided between preceding tube coupling and rear tube coupling contact face.
Moreover, elastic sheeting caps outer circumference surface extends to bellmouth steel collar inner wall, elastic sheeting caps and bellmouth steel bushing interannular
Sealing material is filled at gap.
Moreover, preceding tube coupling is equipped with reinforcement cage skeleton with rear tube coupling, bellmouth steel collar, socket steel ring and steel collar pass through
Fixed steel bars are connected on reinforcement cage skeleton, and the rubber ring is olecranon rubber ring, bellmouth steel collar, socket steel ring and fixed steel
The joint gap position of muscle is equipped with water expandable waterstop.
Moreover, the gap location between bellmouth steel collar and preceding tube coupling is filled with sealing material.
Moreover, olecranon rubber ring gradually thickens from top to lip, the lip of olecranon rubber ring is in olecranon type and after
Tube coupling rear end.
Moreover, being parallel with bellmouth steel collar after olecranon rubber ring and the edge portions compression that bellmouth steel collar is in contact
Plane.
Moreover, socket steel ring is equipped with injected hole, the injected hole is connected with Grouting Pipe.
Moreover, the high elastic rubber plate surface is coated with sealing material, high elastic rubber plate and tile pressing steel plate
The sum of thickness is thicker than groove width of rebate, and the high elastic rubber plate, tile pressing steel plate and groove notch are interference fitted.
Moreover, one end of tile pressing steel plate is provided with baffle, tile pressing steel plate longitudinal section is L-shaped, transversal
Face is arc-shaped.
Compared with prior art, the advantageous effect of the technical solution is：1, traditional jointing only has sealing in tube coupling outer wall
Connecting component, technical scheme of the present invention has connecting component in tube coupling outer wall and tube coupling inner wall, and passes through tube coupling outer wall, tube coupling
Contact face and tube coupling inner wall three-decker are sealed, and connection is more firm, and sealing performance is more preferable；2, it is connect in traditional steel bellmouth
On the basis of capitiform formula, using the olecranon rubber ring of optimization, olecranon rubber ring lip is apparent relative to the lip of traditional rubber ring
Deepen, olecranon rubber ring can reduce the area of stress concentration that rubber ring lip position and top are generated with bellmouth steel collar contact site
Domain avoids installing force is excessive rubber ring is caused to destroy；3, when connector is in level of ground water hereinafter, the effect of water pressure can make olecranon
Rubber ring lip opens, and increases olecranon rubber ring and bellmouth steel collar contact, improves sealing performance；4, bellmouth steel collar,
The joint gap position of socket steel ring and fixed steel bars is pasted with water expandable waterstop, preceding tube coupling and rear tube coupling contact face
Water expandable waterstop is pasted in tube wall, when there is water to penetrate into front and back tube coupling contact surface, water expandable waterstop can play only
Water effect prevents tube coupling from contacting sweat；5, when having the case where water leaks, hydraulic pressure can be such that tile pressing steel plate squeezes
High elastic rubber plate realizes notch sealing, to keep front and back tube coupling inner wall completely enclosed, reaches the purpose of leak stopping；6, tube coupling connector
There are the positions in gap to be filled with sealing material, strengthens sealing anti-seepage effect；7, preceding tube coupling is respectively provided with rear tube coupling inner wall
There are the steel collar of inner band beam slab, steel collar to be fixedly connected by bolt nut structure, can reduce in pipeline differential settlement
Tube coupling connector steel collar stress deformation ensures the smooth jacking of tube coupling；8, when pipeline is rectified a deviation, adjusting bolt both ends spiral shell can be passed through
Female tightness adapts to the deflection angle between front and back tube coupling, and can prevent from excessively rectifying a deviation, while can be applied to curved jacking；
9, the steel collar of inner band beam slab has the function of the preceding tube coupling of limitation and rear tube coupling displacement, and preceding tube coupling is with rear tube coupling in outer force effect
Under the case where will not being in contact end surface dislocation.The technical program, which can fully meet electric power push pipe etc., has high waterproof requirement work
The needs of journey, and the complicated constructions environment such as can adapt to high hydraulic pressure, soft stratum.
Description of the drawings
Fig. 1 is a kind of top schematic cross-section of tube coupling connector and tube coupling tube wall of the present invention；
Fig. 2 is the schematic cross-section that a kind of tube coupling connector of the present invention contains slip casting tube portion；
Fig. 3 is two steel collars of the present invention and the top schematic cross-section of bolt fastening structure；
Fig. 4 is the steel loop and beam slab overall schematic of the inner band beam slab of the present invention；
Fig. 5 is the steel loop 1-1 ' cross-sectional views of the inner band beam slab of the present invention；
Fig. 6 is the steel loop 2-2 ' cross-sectional views of the inner band beam slab of the present invention；
Fig. 7 is the tile pressing steel plate schematic diagram of the present invention；
Fig. 8 is conventional wedge rubber ring sectional view；
Fig. 9 is olecranon rubber ring sectional view；
Reference sign：1- bellmouth steel collars, 2- socket steel rings, 3- olecranon rubber rings, 4- water expandable waterstops, 5-
Bi-component polysulfide sealing compound, 6- elasticity sheeting caps, 7- fixed steel bars, tube coupling before 8-, tube coupling after 9-, 10- injected holes, 11- slip castings
It manages, 12- screws, 13- gasket seals, 14- pea gravel concretens, the steel collar of tube coupling inner band beam slab before 15-, after 16- in tube coupling
Steel collar of the side with beam slab, 17- high elastic rubber plates, 18- tile pressing steel plates, 19- bolts, 20- nuts, 21- steel loops,
22- beam slabs, floor before 23-, floor after 24-, 25- bolts hole, 26- lips.
Specific implementation mode
The present invention is illustrated in detail with reference to the accompanying drawings and examples, present disclosure is not limited to following
Embodiment.
Interface of the RC pipejacking tube coupling connector provided by the invention between adjacent preceding tube coupling and rear tube coupling
Place carries out comprehensive sealing to tube coupling from tube coupling outer wall, tube coupling contact section and tube coupling inner wall, is tightly connected by tube coupling outer wall
Component and tube coupling inner wall sealing connecting component are attached tube coupling.Tube coupling and tube coupling connector are integrally ring-shaped, shown in Fig. 1
Be a kind of topmost schematic cross-section of RC pipejacking tube coupling connector and front and back tube coupling tube wall, from upper in the schematic diagram
It is tube coupling outer wall section, tube coupling contact section part and tube coupling inner wall section successively under.
Interface of the RC pipejacking tube coupling connector between adjacent preceding tube coupling 8 and rear tube coupling 9, including tube coupling
Outer wall sealed connection part, tube coupling contact section sealing structure and tube coupling inner wall sealing connecting component.
Tube coupling inner wall sealing connecting component overall diagram is as shown in figure 4, the amplified steel collar of dotted box portion and spiral shell in Fig. 1
As shown in figure 3, preceding tube coupling is respectively provided with a steel collar with rear tube coupling inner wall, steel collar is at least wrapped in the top section of bolt fixed structure
Annular a steel loop 21 and beam slab 22 are included, beam slab is located on the inside of steel loop, and the adjacent side of two steel loops offers notch respectively
Mutual corresponding groove, notch is interior to be arranged a high elastic rubber plate 17, and the seam between high elastic rubber plate and two grooves
Gap squeezes high elastic rubber plate using tile pressing steel plate 18 and is sealed.One end of tile pressing steel plate is provided with gear
Plate, tile pressing steel plate longitudinal section is L-shaped, and cross section is arc-shaped, as shown in Figure 7.Front and back tube coupling 8,9 tube wall medial gaps
It is bonded 17 surface coating bi-component polysulfide sealing compound 5 of high elastic rubber plate.The present invention passes through the steel collar pair positioned at tube coupling inner wall
Tube coupling inner wall is sealed.
High elastic rubber plate thickness is less than groove width of rebate, and rubber slab width is slightly larger than twice and notch of depth of rebate
Between apart from sum, use this interference fit to adapt to tube coupling correction；It is set in steel bushing annular groove mouth described in front and back tube coupling
It is equipped with tile pressing steel plate, for squeezing high elastic rubber plate, the pressing steel plate is obtained by doughnut-shaped steel plate decile, and steel plate is long
Degree is identical as depth of rebate, and thickness is less than groove width of rebate, but high elastic rubber plate and the tile pressing steel plate thickness
The sum of be slightly larger than width of rebate, the practical structure for interference fit can more increase leakproofness.
Tube coupling inner wall sealing connecting component is further as shown in Figure 5 and Figure 6, steel loop 1-1 ' cross sections in Fig. 5 corresponding diagrams 4
Scheme, steel loop 2-2 ' cross-sectional views in Fig. 6 corresponding diagrams 4, beam slab both sides are respectively arranged with preceding floor 23, rear floor 24 and bolt hole
25；Preceding floor 23, rear floor 24 and bolt hole 25 are arranged along beam slab circle distribution, and the position of floor and bolt hole is interlaced
Setting；Preceding tube coupling is corresponded with the bolt hole position on rear tube coupling beam slab, and bolt 19 is interspersed in bolt hole, is set on bolt 19
Set four nuts 20.The quantity and position of beam slab installation position, Bolt sizes and bolt hole and floor setting can be according to tools
Body embodiment is rationally adjusted.
Tube coupling outer wall sealed connection part of the present invention includes at least the bellmouth steel collar 1 for being located at preceding tube coupling rear end and is located at
The socket steel ring 2 of adjacent rear tube coupling front end, preceding tube coupling are equipped with reinforcement cage skeleton, bellmouth steel collar and socket steel with rear tube coupling
Ring is connected to by fixed steel bars 7 on reinforcement cage skeleton, and socket steel ring is equipped with two at the position being in contact with bellmouth steel collar
Road annular groove, annular groove be embedded with annular olecranon rubber ring 3, bellmouth steel collar, socket steel ring and fixed steel bars company
It connects gap site and is pasted with water expandable waterstop 4, bellmouth steel collar and preceding tube coupling mix the gap location between the tube wall of territory and fill
There is bi-component polysulfide sealing compound 5.
The top of olecranon rubber ring is towards the contact face of front and back tube coupling, and the lip of olecranon rubber ring 3 is towards after rear tube coupling
End, olecranon rubber ring gradually thicken from top to lip, and the lip of olecranon rubber ring is in olecranon type.As shown in figure 8, conventional wedge
Rubber ring lip form is arc-shaped, and olecranon rubber ring shown in Fig. 9 obviously adds compared to conventional wedge rubber ring lip 26
Deep, lip form changes.The distance between the lip of olecranon rubber ring and top are shorter, and the seamed edge of olecranon rubber ring is longer.
The olecranon rubber ring belongs to self-tightening type, and rubber ring generates certain compressive deformation in tube coupling installation process, makes it and connects
Head rigid face fits closely generation contact, under real use state, rib that olecranon rubber ring is in contact with bellmouth steel collar
Rim portion is pressed into the plane parallel with bellmouth steel collar by external force；Olecranon rubber ring can reduce rubber ring lip during the installation process
The region of stress concentration that oral area position and top are generated with bellmouth steel collar contact site avoids installing force is excessive from causing rubber ring broken
Bad, when connector is in level of ground water hereinafter, effect of water pressure makes its opening in olecranon rubber ring lip, lip position is in water pressure
Under the action of open after can increase contact with bellmouth steel collar, improve sealing performance.
Tube coupling contacts section sealing structure as shown in Figure 1, being opened respectively in the middle part of preceding tube coupling and the tube wall of rear tube coupling contact face
There is the mutual corresponding annular groove in position, water expandable waterstop 4, preceding tube coupling and rear tube coupling are equipped between being equipped in two annular grooves
Elastic sheeting caps 6 is equipped between contact face.Tube coupling contact face is carried out by the water expandable waterstop in annular groove close
Envelope, and elastic sheeting caps can play the role of buffering top power in jack-in process, reduce the destruction to concrete tube wall.
As shown in Fig. 2, socket steel ring 2 reserves injected hole 10, RC pipejacking tube coupling connector can stay when actual fabrication
There is 2-3 injected hole for testing sealing effect, injected hole is connected with Grouting Pipe 11, and Grouting Pipe is adopted close to the end of tube coupling inner wall
Gasket 13 is encrypted with screw 12 to block, when test sealing effect terminates, pea gravel concreten 14 can be used to smooth out after the completion of slip casting,
Seal injected hole and Grouting Pipe.
Traditional jointing only has sealed connection part in tube coupling outer wall, and technical scheme of the present invention is in tube coupling outer wall and tube coupling
Wall has connecting component, and is sealed by tube coupling outer wall, tube coupling contact face and tube coupling inner wall three-decker, and connection is more steady
Gu better tightness.
During use, when needing to carry out tube coupling correction in jack-in process, two end nut of adjusting bolt can be passed through
Tightness adapts to the deflection angle between front and back tube coupling, adapts to different tube coupling deviation adjustment angles, and can prevent from excessively rectifying a deviation, together
When can be applied to curved jacking.Steel collar is fixedly connected by bolt nut structure, can reduce pipe in pipeline differential settlement
Connector steel collar stress deformation is saved, ensures the smooth jacking of tube coupling；Steel collar also has the work for limiting preceding tube coupling and rear tube coupling displacement
The case where will not being in contact end surface dislocation under external force with rear tube coupling with, preceding tube coupling.The present invention can fully meet electricity
Power push pipe etc. has the needs of high waterproof requirement engineering, and the complicated constructions environment such as can adapt to high hydraulic pressure, soft stratum.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, in the technology of the present invention
In conception range, a variety of simple variants can be carried out to technical scheme of the present invention, these simple variants belong to the present invention's
Protection domain.
Claims (10)
1. a kind of RC pipejacking tube coupling connector, it is characterised in that：It is close that the connecting component of connector includes at least tube coupling outer wall
Connecting component and tube coupling inner wall sealing connecting component are sealed, the tube coupling outer wall sealed connection part includes at least after preceding tube coupling
The bellmouth steel collar at end and socket steel ring positioned at rear tube coupling front end, socket steel ring is equipped with the above annular groove together, annular recessed
Slot is embedded with the rubber ring of annular；The tube coupling inner wall sealing component includes at least preceding tube coupling and is respectively equipped with one with rear tube coupling inner wall
A steel collar, each steel collar include at least the steel loop of annular and the beam slab of annular, and beam slab is located at steel loop inside, two steel loops
Adjacent side offers the mutual corresponding groove of notch respectively, is set in two grooves there are one high elastic rubber plate, described high-elastic
Gap between property rubber slab and two grooves is filled out respectively equipped with tile pressing steel plate, and beam slab front and rear sides are uniformly distributed floor,
Beam slab is provided with bolt hole, and the position of floor and bolt hole is interlaced, preceding tube coupling and the bolt hole position phase on rear tube coupling beam slab
Mutually corresponding, mutual corresponding bolt hole is connected by bolt and nut.
2. RC pipejacking tube coupling connector according to claim 1, it is characterised in that：Preceding tube coupling is contacted with rear tube coupling
The mutual corresponding annular groove in position is had in the middle part of the tube wall of end face, and water-swellable sealing is equipped between two annular grooves are interior
Item is provided with elastic sheeting caps between preceding tube coupling and rear tube coupling contact face.
3. RC pipejacking tube coupling connector according to claim 2, it is characterised in that：Elastic sheeting caps outer circumference surface
Bellmouth steel collar inner wall is extended to, elastic sheeting caps is filled with sealing material with bellmouth steel collar gap location.
4. RC pipejacking tube coupling connector according to claim 1, it is characterised in that：Preceding tube coupling is all provided with rear tube coupling
There is reinforcement cage skeleton, bellmouth steel collar, socket steel ring and steel collar are connected to by fixed steel bars on reinforcement cage skeleton, described
Rubber ring is olecranon rubber ring, and the joint gap position of bellmouth steel collar, socket steel ring and fixed steel bars is stopped equipped with water-swellable
Water bar.
5. RC pipejacking tube coupling connector according to claim 4, it is characterised in that：Bellmouth steel collar and preceding tube coupling
Between gap location be filled with sealing material.
6. RC pipejacking tube coupling connector according to claim 4, it is characterised in that：Olecranon rubber ring from top to
Lip gradually thickens, and the lip of olecranon rubber ring is in olecranon type and towards rear tube coupling rear end.
7. RC pipejacking tube coupling connector according to claim 4, it is characterised in that：Olecranon rubber ring and bellmouth steel
The edge portions that lantern ring is in contact are the plane parallel with bellmouth steel collar after being pressurized.
8. RC pipejacking tube coupling connector according to claim 1, it is characterised in that：Socket steel ring is equipped with slip casting
Hole, the injected hole are connected with Grouting Pipe.
9. RC pipejacking tube coupling connector according to claim 1, it is characterised in that：The high elastic rubber plate table
Face is coated with sealing material, and the sum of high elastic rubber plate and tile pressing steel plate thickness are thicker than groove width of rebate, the height
Elastic rubber slab, tile pressing steel plate and groove notch are interference fitted.
10. RC pipejacking tube coupling connector according to claim 1, it is characterised in that：Tile pressing steel plate
One end is provided with baffle, and tile pressing steel plate longitudinal section is L-shaped, and cross section is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644366.0A CN108443612B (en) | 2018-06-21 | 2018-06-21 | RC pipejacking tube coupling connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644366.0A CN108443612B (en) | 2018-06-21 | 2018-06-21 | RC pipejacking tube coupling connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443612A true CN108443612A (en) | 2018-08-24 |
| CN108443612B CN108443612B (en) | 2019-10-29 |
Family
ID=63206714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810644366.0A Active CN108443612B (en) | 2018-06-21 | 2018-06-21 | RC pipejacking tube coupling connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443612B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503370A (en) * | 2020-04-22 | 2020-08-07 | 五冶集团上海有限公司 | Reinforced concrete top pipe joint |
| CN111764438A (en) * | 2020-05-07 | 2020-10-13 | 中国一冶集团有限公司 | Pipe jacking method prefabricated pipe gallery joint gap waterproof structure and method |
| CN114134930A (en) * | 2021-11-11 | 2022-03-04 | 中建三局集团有限公司 | Steel die cast-in-place type jacking pipe joint and construction method thereof |
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| CN204852606U (en) * | 2015-07-26 | 2015-12-09 | 中铁十八局集团有限公司 | Curve push pipe tube coupling bell and spigot connection form |
| EP3270027A1 (en) * | 2016-07-12 | 2018-01-17 | Berding Beton GmbH | Pipe section with two connected jacking pipes |
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| JP2008303941A (en) * | 2007-06-06 | 2008-12-18 | Sekisui Chem Co Ltd | Grout hole closing structure for tube, and structure and method for testing water tightness of grout hole |
| CN203907010U (en) * | 2014-06-05 | 2014-10-29 | 中铁上海工程局集团有限公司 | Flexible connection device for pipe jacking construction in soft soil layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111503370A (en) * | 2020-04-22 | 2020-08-07 | 五冶集团上海有限公司 | Reinforced concrete top pipe joint |
| CN111764438A (en) * | 2020-05-07 | 2020-10-13 | 中国一冶集团有限公司 | Pipe jacking method prefabricated pipe gallery joint gap waterproof structure and method |
| CN114134930A (en) * | 2021-11-11 | 2022-03-04 | 中建三局集团有限公司 | Steel die cast-in-place type jacking pipe joint and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN108443612B (en) | 2019-10-29 |
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