CN209742908U - Assembled large-section rectangular pipe jacking joint - Google Patents
Assembled large-section rectangular pipe jacking joint Download PDFInfo
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- CN209742908U CN209742908U CN201920397205.6U CN201920397205U CN209742908U CN 209742908 U CN209742908 U CN 209742908U CN 201920397205 U CN201920397205 U CN 201920397205U CN 209742908 U CN209742908 U CN 209742908U
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Abstract
The utility model relates to an assembled large-section rectangular pipe-jacking pipe joint, which is formed by connecting a plurality of pipe-jacking pipe joints, wherein each pipe-jacking pipe joint is formed by splicing a plurality of pipe pieces; the section of jurisdiction includes according to the position: a lower segment, a left lower segment, a right lower segment, a left upper segment, a right upper segment, and an upper segment; the lower duct piece and the upper duct piece are in the same trapezoid shape, the left lower duct piece and the right upper duct piece are in the same L shape, the long end is an oblique opening, and the short end is a flat opening; the right lower duct piece and the left upper duct piece are in the same L shape, the long end is a flat opening, and the short end is an oblique opening. The utility model has the advantages that: the 6 prefabricated concrete segments are adopted for assembly, so that the segment prefabrication degree is high, the processing is convenient, and the material cost is saved; the segments are connected by adopting a plurality of groups of inclined bolts according to the length of the segments, and nuts are embedded at one ends of the inclined bolts, so that the damage to the segments is less, and the segments are good in corrosion resistance and durability; compared with the whole section of pipe section, the large-section pipe-jacking prefabricated pipe section has small volume, light dead weight and convenient manufacture, storage and transportation.
Description
Technical Field
The utility model relates to a push pipe construction engineering field, in particular to big section rectangle push pipe tube coupling of assembled is applicable to big section rectangle push pipe construction.
background
The pipe jacking technology is a trenchless tunneling type pipeline laying construction technology used for municipal construction. Because the pipe jacking construction can not block traffic, does not damage roads and vegetation, can avoid residential life and traffic interference brought by excavation construction and damage influence on environment and building foundation, has small construction site and low noise, and can go deep into underground operation to increasingly receive attention of people.
with the development of social economy, the cross section size of the constructed jacking pipe is continuously increased, and the large-section rectangular jacking pipe construction method is favored due to the large excavation surface and the large effective sectional area.
The current largest rectangular shield in China can reach 10.4 multiplied by 7.5m in size, and the self weight of the shield reaches 73 t. The size of a general large-section rectangular shield is from 5 x 3m to 10 x 7m, the self weight of the shield is from 20t to 70t, and the ring width is more than 1.5 m. For example, the nine-gauge large-section rectangular top pipe of Shenzhen subway has the cross section size of 7.7 multiplied by 4.3m and the self weight of 54t, and needs to be installed by using a crane with the self weight of 310 t.
The problems of large self weight, large transportation and installation difficulty and the like of the large-section rectangular pipe jacking section are solved, the construction difficulty and the engineering cost are increased, and the development of the large-section pipe jacking construction technology is influenced. At present, a patent for dividing a pipe section of a jacking pipe into 2 or 4 pipe pieces exists, but the specific assembling and construction mode is not involved.
In summary, the large-section rectangular pipe jacking segment has the problems of great weight, high transportation and installation difficulty and the like, and the improvement technology is urgently needed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the not enough of big section rectangle push pipe tube coupling transportation, installation difficulty, provide a big section rectangle push pipe tube coupling of assembled.
the assembled large-section rectangular pipe jacking pipe joint is formed by mutually connecting a plurality of pipe jacking pipe joints, and each pipe jacking pipe joint is formed by splicing a plurality of pipe pieces; the section of jurisdiction includes according to the position: a lower segment, a left lower segment, a right lower segment, a left upper segment, a right upper segment, and an upper segment; the lower duct piece and the upper duct piece are in the same trapezoid shape, the left lower duct piece and the right upper duct piece are in the same L shape, the long end is an oblique opening, and the short end is a flat opening; the right lower duct piece and the left upper duct piece are in the same L shape, the long end is a flat opening, and the short end is an oblique opening.
Preferably, the pipe pieces are connected through contact surfaces and a plurality of groups of inclined bolts, an elastic sealing gasket is arranged on the outer side of each contact surface of each pipe piece, an inner waterproof strip which expands when encountering water is arranged on the inner side of each elastic sealing gasket, and an inner caulking seam is arranged on the inner side of each inner waterproof strip.
Preferably, the adjacent pipe joints of the jacking pipe are connected through an F-shaped three-way waterproof system joint and an inclined bolt, and the F-shaped three-way waterproof system joint comprises: the 1 st waterproof system: a bell and spigot is arranged at the joint of the pipe joints of the jacking pipe, the interface steel lantern ring is closely attached to the concrete structure at the bell mouth, and a water-stop steel ring consisting of 2 steel rings and a water-expansion water-stop strip is arranged at the position where the end part of the interface steel lantern ring is closely attached to the concrete; a semicircular sealing rubber ring and a olecranon-shaped sealing rubber ring are closely attached to the outer side of the concrete structure of the pipe joint socket of the jacking pipe; and 2, a waterproof system: slotting the middle upper part of the pipe wall of the female end of the pipe joint of the jacking pipe, and embedding a porous ethylene propylene diene monomer rubber sealing gasket; the end surface of the socket of the pipe joint of the top pipe corresponds to the sealing gasket; and 3, a waterproof system: and a caulking groove is arranged at the joint of the two pipe joints at the inner sides of the pipe joints of the two pipe joints, and sealant is injected.
Preferably, the adjacent pipe sections of the top pipe are connected by staggered joints.
The utility model has the advantages that:
1. The 6 precast concrete segments are adopted for assembly, the segment prefabrication degree is high, the processing is convenient, and the material cost is saved.
2. The segments are connected by adopting a plurality of groups of oblique bolts according to the length of the segments, nuts are embedded at one ends of the oblique bolts, the damage to the segments is less, and the segments are good in corrosion resistance and durability.
3. Compared with the whole section of pipe section, the large-section pipe-jacking prefabricated pipe section has small volume, light dead weight and convenient manufacture, storage and transportation.
4. The material equipment and labor requirements for transporting and assembling the jacking pipe are reduced, the construction efficiency is improved, and the engineering cost is reduced.
5. The pipe joint of the jacking pipe is additionally provided with the longitudinal straight bolt, so that the rigidity and the tensile capacity of the joint are improved, and the use safety of the rectangular jacking pipe is improved.
Drawings
FIG. 1 is a sectional view of a large-section rectangular jacking pipe assembled by pipe pieces;
FIG. 2 is a schematic view of a duct piece assembly process;
FIG. 3 is a schematic view of the connection between segments;
FIG. 4 is a schematic view of the interface between pipe sections;
FIG. 5 is a schematic view of 6 assembled large-section rectangular jacking pipe joints assembled by staggered joints;
FIG. 6 is a schematic cross-sectional view of a working well during pipe jacking construction;
Description of reference numerals: 1-lower segment, 2-left lower segment, 3-right lower segment, 4-left upper segment, 5-right upper segment, 6-upper segment, 7-oblique bolt, 8-bench, 9-roller, 10-hydraulic jack, 11-outer elastic sealing gasket, 12-inner waterproof strip, 13-inner caulking, 14-sealant, 15-elastic sealing gasket, 16-backing plate, 17-interface steel lantern ring, 18-steel ring, 19, semicircular sealing rubber ring, 20-olecranon-shaped sealing rubber ring, 21-pipe jacking segment, 22-pipe jacking machine, 23-top iron and 24-small crane.
Detailed Description
the present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
As shown in fig. 1 to 6, in the fabricated large-section rectangular top pipe joint and the construction method of the embodiment, 6 precast concrete segments are used to fabricate the large-section rectangular top pipe joint 21. The positions of the pipe pieces are named as a lower pipe piece 1, a left lower pipe piece 2, a right lower pipe piece 3, a left upper pipe piece 4, a right upper pipe piece 5 and an upper pipe piece 6 respectively according to the assembling process, so that the pipe sections of the large-section rectangular jacking pipe are formed. The specific construction method comprises the following steps: and excavating a working well and hoisting jacking equipment. And (4) conveying the 6 prefabricated pipe pieces to a construction site. Hardening the pipe jacking working surface, hardening the pipe jacking working surface and arranging a counterforce wall. And (3) conveying the pipe piece to the working well by using a small crane (24), and jacking the pipe piece into the reserved position at the pipe jacking pipe joint (21) to assemble the pipe piece. Excavating a tunnel face, jacking the pipe joints 21 of the jacking pipes by using the hydraulic jack 10 and synchronously grouting. And (5) grouting after the jacking of the jacking pipe is finished. And circulating the processes of hoisting and jacking the duct piece.
The concrete process and connection details of the duct piece assembly are as follows: and the lower duct piece 1, the left lower duct piece 2 and the right lower duct piece 3 are hoisted to the arch bottom position by a small crane 24 and then directly assembled in place. A detachable assembly type rack 8 is lapped on the left lower pipe piece 1 and the right upper pipe piece 2, and the bottom of the rack 8 is provided with a roller 9 which can move longitudinally in the pipe jacking; a hydraulic jack 10 is arranged below the rack 8, and the rack 8 is lifted to the top end inside the designed pipe jacking joint 21 through the hydraulic jack 10. The left upper duct piece 4 and the right upper duct piece 5 are rotated by a small crane 24 to adjust angles, and are lifted to two sides of the rack 8 and supported on the rack 8; the workman arrives left and right sides assigned position through rack 8, assembles left lower tube sheet 2 and left upper tube sheet 4, right lower tube sheet 3 and right upper tube sheet 5. Hoisting the upper segment 6 to the rack 8 by using a small crane 24; the workman arrives the push pipe top through rack 8, assembles left side upper segment 4 and upper portion section of jurisdiction 6, upper right segment 5 and upper portion section of jurisdiction 6. After the assembly of the pipe piece is finished, the hydraulic jack 10 is retracted, and the top end of the rack 8 is not contacted with the inner side of the jacking pipe any more; and a steel plate is erected between the assembled jacking pipes and the jacked jacking pipes, and the rack 8 provided with the rollers 9 enters the jacked jacking pipes through the steel plate.
The pipe pieces can be connected by adopting a plurality of groups of inclined bolts 7 according to the length of the pipe pieces, and an outer side elastic sealing gasket 11, an inner side waterproof strip 12 and an inner side caulking joint 13 are adopted for water prevention. The design is that an elastic sealing gasket 11 is arranged on the outer side of a shield segment to stop water; the water-swelling waterproof strip 12 is arranged on the inner side of the outer ring elastic sealing gasket, and the water-swelling waterproof strip 12 can swell when meeting water and also has the function of assisting in water prevention, so that the service life and the durability of the sealing gasket are ensured; the inner side of the inner waterproof strip 12 is provided with an inner caulking 13 to form multiple fortifications and ensure the comprehensive waterproof effect of the joint.
the pipe joints are connected by adopting an F-shaped three-way waterproof system joint, and the connection strength is enhanced by adopting a plurality of groups of inclined bolts 7. The details of the F-shaped three-way waterproof system joint are as follows: the 1 st waterproof system: the joint of the pipe joints is provided with a bell socket, the interface steel lantern ring 17 is made of a steel plate with the thickness of 18mm and is closely attached to the concrete structure at the bell socket, and in order to avoid water seepage between the steel ring and the concrete, the close attachment of the end part of the steel ring and the concrete is provided with a water stop steel ring 18 consisting of 2 phi 6 steel rings and a water expansion water stop strip. A semicircular rubber ring 19 and a olecranon-shaped sealing rubber ring 20 are closely attached to the outer side of the pipe joint socket concrete structure, and when the pipe joint socket concrete structure is inserted into the joint steel lantern ring 17 during construction, the rubber ring is compressed and closely attached to the steel lantern ring, so that a good waterproof system is formed. And 2, a waterproof system: a groove is formed in the middle upper part of the pipe wall of the female end of the pipe joint, and a porous ethylene propylene diene monomer rubber sealing gasket 15 is embedded. The end face of the pipe joint socket is manually polished to be smooth and flat at the position corresponding to the sealing gasket 15, so that the pipe joint socket can be closely attached to the ethylene propylene diene monomer sealing gasket 15 after assembly construction, and the waterproof purpose is achieved. Waterproof system of No. 3 (reserved waterproof system): the joint of the two pipe joints at the inner sides of the pipe joints is provided with a caulking groove, and the later stage can adopt a form of injecting a double-component polysulfide sealant 14 or a water receiving groove water diversion form for water prevention.
And adjacent pipe joints still adopt 6 prefabricated pipe pieces and are connected with the next pipe joint in a staggered joint mode, and the pipe pieces of the pipe joints at intervals are completely the same. For improving section of jurisdiction prefabrication efficiency, the utility model discloses a section of jurisdiction can realize the part general, and lower part section of jurisdiction 1 and upper portion section of jurisdiction 6 and the lower part section of jurisdiction of next tube coupling promptly can be general, and left side lower tube sheet 2 and right side upper tube sheet 5 can be general, and right side lower tube sheet 3 and left side upper tube sheet 4 can be general, and the left side lower of next tube coupling, upper right tube sheet can be general, and the right side lower of next tube coupling, upper left tube sheet can be general.
The segments are connected by adopting a plurality of groups of oblique bolts 7 according to the length of the segments, nuts are embedded at one ends of the oblique bolts 7, the damage to the segments is less, and the segments are good in corrosion resistance and durability. The longitudinal inclined bolts 7 are additionally arranged at the joints among the pipe joints 21 of the jacking pipe, so that the rigidity and the tensile capacity of the joints are improved, the use safety of the rectangular jacking pipe is improved, and the possibility of water leakage and joint deformation is reduced.
Assembled big section rectangle push pipe tube coupling is assembled and is different from the shield structure section of jurisdiction and assemble in the tunnel, and the upper portion section of jurisdiction 6 of push pipe tube coupling 21 is made to fall trapezoidally, is convenient for assemble, and upper left pipe segment 4 and upper right pipe segment 5 share the soil body for oblique bolt 7 and act on the soil pressure of push pipe tube coupling 21, increase oblique bolt 7's tensile, ability of shearing.
The bench 8 is formed by combining section steel and bolts. The platform frame 8 adopts a detachable assembly type, the lower part of the platform frame is provided with the idler wheels 9, and the pipe pieces of the jacking pipes can enter the jacking pipes after being assembled, so that the repeated assembly of the platform frame 8 can be avoided; the gantry 8 can also be disassembled if necessary.
The construction method adopting the assembled large-section rectangular pipe jacking pipe joint 21 comprises the following steps:
1. The 6 prefabricated pipe pieces are conveyed to a construction site, the lower pipe piece 1, the left lower pipe piece 2 and the right lower pipe piece 3 are hung to the arch bottom position by a small crane 24, and then the prefabricated pipe pieces are directly assembled in place.
2. a detachable assembly type rack 8 is lapped on the assembled pipe piece, and the bottom of the rack 8 is provided with a roller 9 which can move longitudinally in the pipe piece; a hydraulic jack 10 is arranged below the rack 8, and the rack 8 is lifted to the top end inside the designed pipe jacking joint 21 through the hydraulic jack 10.
3. Hoisting the left upper pipe sheet 4 and the right upper pipe sheet 5 to two sides of the rack 8 by using a small crane 24, and supporting the racks on the rack 8; the workman arrives left and right sides assigned position through rack 8, assembles left lower tube sheet 2 and left upper tube sheet 4, right lower tube sheet 3 and right upper tube sheet 5.
4. Hoisting the upper segment 6 to the rack 8 by using a small crane 24; the workman arrives the push pipe top through rack 8, assembles left side upper segment 4 and upper portion section of jurisdiction 6, upper right segment 5 and upper portion section of jurisdiction 6.
5. After the assembly of the pipe piece is finished, the hydraulic jack 10 is retracted, and the top end of the rack 8 is not contacted with the inner side of the jacking pipe any more; and a steel plate is erected between the assembled jacking pipes and the jacked jacking pipes, and the rack 8 provided with the rollers 9 enters the jacked jacking pipes through the steel plate.
6. The assembled pipe joints 21 of the jacking pipe are pushed forwards by a hydraulic jack 10, and then the next pipe joint is spliced.
Claims (4)
1. The utility model provides an assembled big section rectangle push pipe coupling which characterized in that: the pipe joint is formed by mutually connecting a plurality of pipe joints (21), and each pipe joint (21) is formed by splicing a plurality of pipe pieces; the section of jurisdiction includes according to the position: a lower segment (1), a left lower segment (2), a right lower segment (3), a left upper segment (4), a right upper segment (5) and an upper segment (6); the lower duct piece (1) and the upper duct piece (6) are in the same trapezoid shape, the left lower duct piece (2) and the right upper duct piece (5) are in the same L shape, the long end is an oblique opening, and the short end is a flat opening; the right lower duct piece (3) and the left upper duct piece (4) are in the same L shape, the long end is a flat opening, and the short end is an oblique opening.
2. The fabricated large-section rectangular top pipe joint of claim 1, wherein: the pipe pieces are connected through contact surfaces and a plurality of groups of inclined bolts (7), the pipe pieces are provided with an elastic sealing gasket (11) outside the contact surfaces, an inner waterproof strip (12) which expands with water is arranged on the inner side of the elastic sealing gasket (11), and an inner caulking joint (13) is arranged on the inner side of the inner waterproof strip (12).
3. The fabricated large-section rectangular top pipe joint of claim 1, wherein: adjacent pipe joints (21) of the jacking pipe are connected with an inclined bolt (7) through an F-shaped three-way waterproof system joint, and the F-shaped three-way waterproof system joint comprises: the 1 st waterproof system: a bell and spigot is arranged at the joint of the pipe joint (21) of the jacking pipe, a connector steel sleeve ring (17) is closely attached to a concrete structure at a bell mouth, and a water-stopping steel ring (18) consisting of 2 steel rings and a water expansion water-stopping strip is arranged at the position where the end part of the connector steel sleeve ring (17) is closely attached to the concrete; a semicircular sealing rubber ring (19) and a olecranon-shaped sealing rubber ring (20) are closely attached to the outer side of the concrete structure of the socket of the pipe joint (21) of the jacking pipe; and 2, a waterproof system: a groove is formed in the middle upper part of the pipe wall of the female end of the pipe joint (21) of the jacking pipe, and a porous ethylene propylene diene monomer rubber sealing gasket (15) is embedded; the end surface of the socket of the pipe joint (21) of the top pipe corresponds to the sealing gasket (15); and 3, a waterproof system: and a caulking groove is arranged at the joint of the two pipe-jacking joints (21) at the inner sides of the pipe-jacking joints (21), and sealant (14) is injected.
4. The fabricated large-section rectangular top pipe joint of claim 1, wherein: the adjacent pipe sections (21) of the jacking pipe are connected by staggered joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920397205.6U CN209742908U (en) | 2019-03-27 | 2019-03-27 | Assembled large-section rectangular pipe jacking joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920397205.6U CN209742908U (en) | 2019-03-27 | 2019-03-27 | Assembled large-section rectangular pipe jacking joint |
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| Publication Number | Publication Date |
|---|---|
| CN209742908U true CN209742908U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920397205.6U Active CN209742908U (en) | 2019-03-27 | 2019-03-27 | Assembled large-section rectangular pipe jacking joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882195A (en) * | 2019-03-27 | 2019-06-14 | 浙江大学城市学院 | A kind of assembled big cross section rectangle pipe jacking tube coupling and construction method |
| CN111335919A (en) * | 2020-03-20 | 2020-06-26 | 重庆渝高科技产业(集团)股份有限公司 | Prefabricated pipe joint pushing method |
-
2019
- 2019-03-27 CN CN201920397205.6U patent/CN209742908U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882195A (en) * | 2019-03-27 | 2019-06-14 | 浙江大学城市学院 | A kind of assembled big cross section rectangle pipe jacking tube coupling and construction method |
| CN111335919A (en) * | 2020-03-20 | 2020-06-26 | 重庆渝高科技产业(集团)股份有限公司 | Prefabricated pipe joint pushing method |
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