CN108561138B - Shield interval connecting channel top pipe entering sealed cabin and construction method thereof - Google Patents
Shield interval connecting channel top pipe entering sealed cabin and construction method thereof Download PDFInfo
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- CN108561138B CN108561138B CN201810296137.4A CN201810296137A CN108561138B CN 108561138 B CN108561138 B CN 108561138B CN 201810296137 A CN201810296137 A CN 201810296137A CN 108561138 B CN108561138 B CN 108561138B
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 120
- 238000007789 sealing Methods 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000002787 reinforcement Effects 0.000 claims abstract description 12
- 210000001503 joint Anatomy 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 230000003313 weakening effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Structural Engineering (AREA)
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a construction method for a shield interval connecting channel top pipe entering sealed cabin, which comprises the following steps: providing a reinforcing structure, arranging the reinforcing structure on the periphery of the corresponding connecting channel on the shield segment, and fixedly connecting the reinforcing structure with the corresponding segment in an attaching manner; installing a sealing brush on the surface of the reinforcing structure, which faces a pipe jacking machine to be tunneled, and sealing a gap between the reinforcing structure and the pipe jacking machine through the sealing brush when the pipe jacking machine is tunneled; and providing a pipe jacking receiving structure, and placing the pipe jacking receiving structure in the shield and in butt joint with the reinforcing structure so as to receive the pipe jacking machine entering the tunnel. The sealing brush can effectively prevent water, and water in the soil body is prevented from flowing into the shield channel. Reinforce the connecting channel entrance to a cave through the reinforcement structure, consolidate the section of jurisdiction structure, guarantee the feasibility of construction, solved the problem that push pipe grinding section of jurisdiction produces the influence to structural security and reliability.
Description
Technical Field
The invention relates to the field of pipe jacking construction engineering, in particular to a pipe jacking hole-entering sealed cabin of a shield interval connecting channel and a construction method thereof.
Background
The shield constructs the interval connecting channel for connecting the passageway between two shields, and this connecting channel's construction is constructed in the shield interval of both sides back, constructs the interval at one shield and constructs the interval to another shield in and utilize the push pipe to construct, and during the push pipe construction, the push pipe machine directly grinds shield and constructs the section of jurisdiction and advance the hole, and the push pipe machine grinds shield and constructs the section of jurisdiction and can produce the gap in section of jurisdiction department, and this gap department can produce and leak. In addition, direct grinding shield constructs the section of jurisdiction and can lead to the fact the weakening effect to the section of jurisdiction for the section of jurisdiction produces and accumulates and warp, and the security and the reliability of structure receive great influence.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a shield interval connecting channel top pipe entering sealed cabin and a construction method thereof, and solves the problems that when the existing connecting channel top pipe is constructed, the worn shield segments generate gaps and cause water leakage and the safety and the reliability are influenced due to the weakening effect on the segments.
The technical scheme for realizing the purpose is as follows:
the invention provides a construction method of a shield interval connecting channel top pipe entering sealed cabin, which comprises the following steps:
providing a reinforcing structure, arranging the reinforcing structure on the periphery of the corresponding connecting channel on the shield segment, and fixedly connecting the reinforcing structure with the corresponding segment in an attaching manner;
installing a sealing brush on the surface of the reinforcing structure, which faces a pipe jacking machine to be tunneled, and sealing a gap between the reinforcing structure and the pipe jacking machine through the sealing brush when the pipe jacking machine is tunneled; and
and providing a pipe jacking receiving structure, placing the pipe jacking receiving structure in the shield and connecting the pipe jacking receiving structure with the reinforcing structure in a butt joint mode so as to receive the pipe jacking machine entering the tunnel.
The sealed cabin can effectively prevent water through the arranged sealing brush when the jacking pipe enters the tunnel, and water in a soil body is prevented from flowing into the shield channel. This sealed cabin still carries out the reinforcement to the connecting channel entrance to a cave through the reinforcement structure, through consolidating section of jurisdiction structure, guarantees the feasibility of construction, and the problem that the push pipe grinding section of jurisdiction produced the influence to structural mechanics performance of section of jurisdiction has been solved to the weakening of the entrance to a cave that the construction of reinforcement push pipe formed. Set up the pipe jacking receiving structure in the shield and receive the pipe pushing jack, this pipe jacking receiving structure forms holistic atress system with reinforcement structure fixed connection, can further strengthen the structural strength of section of jurisdiction, improves construction safety.
The construction method of the shield interval connecting channel top pipe entering sealing cabin is further improved in that the step of providing the reinforcing structure comprises the following steps:
providing a pair of beams and a pair of columns, and attaching and fixing the beams and the columns on the corresponding pipe sheets;
and fixedly connecting the end parts of the stand columns with the corresponding end parts of the pair of cross beams, so that the pair of cross beams and the pair of stand columns are connected in a surrounding manner to form a square frame structure.
The construction method of the shield interval connecting channel top pipe entering sealing cabin is further improved in that the step of providing the top pipe receiving structure comprises the following steps:
providing a structural plate, and connecting the structural plate in a sealing manner to form a box body with a rear opening;
and providing a purlin, and fixedly arranging the purlin on the outer side of the structural slab, thereby forming a jacking pipe receiving structure.
The construction method of the shield interval connecting channel top pipe entering sealing cabin further improves that the construction method also comprises the following steps:
laying a reinforcing beam at the bottom of the shield;
and arranging the jacking pipe receiving structure on the reinforcing beam and fixedly connecting the jacking pipe receiving structure with the reinforcing beam.
The construction method of the shield interval connecting channel top pipe entering sealing cabin further improves that the construction method also comprises the following steps:
and providing ribbed slabs, arranging the ribbed slabs at intervals at the top and the bottom of the reinforcing structure, and fixedly connecting the ribbed slabs with the corresponding segments.
The invention also provides a shield interval connecting channel top pipe entering sealing cabin, which comprises:
the reinforcing structures are arranged on the shield pipe piece and correspond to the periphery of the connecting channel, and the reinforcing structures are attached and fixed to the corresponding pipe piece;
the sealing brush is arranged on the surface of the pipe jacking machine to be tunneled on the reinforcing structure, and when the pipe jacking machine is tunneled, the sealing brush is used for sealing a gap between the reinforcing structure and the pipe jacking machine; and
and the jacking pipe receiving structure is arranged in the shield and used for receiving the jacking pipe machine entering the tunnel, and the jacking pipe receiving structure is in butt joint connection with the reinforcing structure.
The shield interval connecting channel top pipe entering seal cabin is further improved in that the reinforcing structure comprises a pair of beams and a pair of stand columns, the beams and the stand columns are fixedly attached to corresponding pipe pieces, and the end parts of the stand columns are fixedly connected with the corresponding end parts of the beams so that the beams and the stand columns are connected in a surrounding mode to form a square frame structure.
The push pipe entry sealing cabin of the shield interval connecting channel is further improved in that the push pipe receiving structure comprises a plurality of structural plates and a plurality of purlins, the structural plates are connected in a sealing mode to form a box body with a rear side opening, and the purlins are fixedly arranged on the outer sides of the structural plates.
The invention further improves the sealing cabin for the top pipe of the connecting channel between the shield zones to enter the tunnel, wherein a reinforcing beam is laid at the bottom of the shield;
the jacking pipe receiving structure is arranged on the reinforcing beam and is fixedly connected with the reinforcing beam.
The shield interval connecting channel top pipe entering sealing cabin is further improved in that the shield interval connecting channel top pipe entering sealing cabin further comprises rib plates arranged at the top and the bottom of the reinforcing structure at intervals, and the rib plates are fixedly connected with corresponding pipe pieces.
Drawings
FIG. 1 is an elevation view of a shield zone connecting channel top pipe entering sealing cabin.
FIG. 2 is a cross-sectional view of A1-A1 of FIG. 1.
FIG. 3 is a cross-sectional view of A2-A2 of FIG. 1.
FIG. 4 is a cross-sectional view A3-A3 of FIG. 2.
FIG. 5 is a cross-sectional view A4-A4 of FIG. 2.
FIG. 6 is a cross-sectional view A5-A5 of FIG. 5.
FIG. 7 is a side view of a reinforcing structure in a shield zone connecting channel jacking pipe entering sealed cabin.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a shield interval connecting channel top pipe entering seal cabin and a construction method thereof, and solves the problem of operability of structural mechanical property after a duct piece is opened. Structural mechanics performance's weakening body is behind the push pipe grinding section of jurisdiction formation entrance to a cave, and annular shield constructs the section of jurisdiction and has formed the breach in entrance to a cave department for structural deformation increases here, becomes the weak point of whole structure. The integral sealed cabin can reinforce the segment structure, has the water stopping function, can effectively protect gaps generated by the grinding shield segments of the jacking pipes during the jacking pipe hole entering construction, and prevents water seepage. The invention relates to a shield interval connecting channel top pipe entering sealed cabin and a construction method thereof.
Referring to fig. 1, a vertical view of the shield interval connecting channel top pipe entering sealing cabin is shown. Referring to FIG. 2, a cross-sectional view A1-A1 of FIG. 1 is shown. The following describes the push pipe entering sealing cabin of the shield interval connecting channel of the invention with reference to fig. 1 and fig. 2.
As shown in fig. 1 and 2, the shield zone connecting channel top pipe hole-entering sealed cabin is arranged in a received shield channel, the connecting channel is arranged on the side part of a constructed shield zone and is used for communicating two parallel shield zones, the connecting channel adopts top pipe construction, and the sealed cabin is used for reinforcing and stopping the water of a duct piece at a hole opening of the top pipe hole-entering.
The shield interval connecting channel top pipe entering seal cabin 30 comprises a reinforcing structure 31, a seal brush 32 and a top pipe receiving structure 33, wherein the reinforcing structure 31 is arranged on the periphery of a shield segment 20 corresponding to a connecting channel, the reinforcing structure 31 is attached and fixed on the corresponding segment 20, and the segment structure strength at the opening of the connecting channel is reinforced through the reinforcing structure 31. The sealing brush 32 is arranged on the surface of the pipe pushing jack 10 to be subjected to hole entering on the reinforcing structure 31, the gap between the reinforcing structure 31 and the pipe pushing jack 10 is sealed through the sealing brush 32, when the pipe pushing jack 10 enters the hole, the sealing brush 32 on the reinforcing structure 31 can seal the gap between the pipe pushing jack 10 and the reinforcing structure 31, so that water in a pipe pushing channel constructed by the pipe pushing jack 10 is prevented from entering the shield channel, and an effective water stopping effect is achieved. The pipe jacking receiving structure 33 is used for receiving the pipe jacking machine 10 entering the tunnel, the pipe jacking receiving structure 33 is arranged in the shield and is in butt joint with the reinforcing structure 31, and when the pipe jacking machine 10 grinds the pipe piece 20 and enters the shield, the pipe jacking machine 10 firstly passes through the reinforcing structure 31 and then enters the pipe jacking receiving structure 33.
The invention realizes the effect of sealing and water stopping by utilizing the sealing brush 32 arranged on the reinforcing structure 31, and the sealing brush can effectively prevent muddy water at the hole of the jacking pipe in the process of jacking pipe construction, thereby effectively preventing muddy water from entering the shield channel.
The sealed cabin 30 of the invention utilizes the reinforcing structure 31 to cooperate with the reinforcing structure in the shield to form effective hole reinforcing effect, thus ensuring the safety of the whole construction process. The sealed cabin 30 is a frame structure system, is stable in stress, and the sealed cabin 30 is arranged around the top pipe opening to reinforce the top pipe opening, so that the problem that the structural mechanical property of the shield segment of the top pipe opening is weakened is solved.
The sealed cabin 30 of the invention receives the pipe jacking machine 10 entering the tunnel through the arranged pipe jacking receiving structure 33, the pipe jacking receiving structure 33 is fixedly connected with the reinforcing structure 31, and the reinforcing structure 31 is fixedly connected with the corresponding pipe piece 20 of the shield, thereby forming the integral sealed cabin 30 in the shield, the pipe jacking receiving structure 33 increases the structural strength and the stress performance of the reinforcing structure 31, improves the reinforcing effect and ensures the safety of the construction process.
Combine fig. 2 and fig. 3 to show, the inside reinforced structure of shield constructs includes steel-pipe piece 21, shield constructs section of jurisdiction 20 and includes concrete section of jurisdiction 22 and steel-pipe piece 21, the section of jurisdiction 20 that connecting channel setting department corresponds is concrete section of jurisdiction 22, it is also the section of jurisdiction 20 that push bench 10 ground is concrete section of jurisdiction 22, design this connecting channel setting position department peripheral section of jurisdiction 20 for steel-pipe piece 21, on the one hand for sealed cabin 30 provides the installation basis through steel-pipe piece 21, on the other hand can consolidate the entrance to a cave 101 that push bench formed on section of jurisdiction 20.
As a preferred embodiment of the present invention, as shown in fig. 1 and fig. 2, the reinforcing structure 31 of the present invention includes a pair of beams 311 and a pair of columns 312, the pair of beams 311 and the pair of columns 312 are attached and fixed on the corresponding tube sheet 20, and the ends of the columns 312 are fixedly connected with the corresponding ends of the pair of beams 311 so that the pair of beams 311 and the pair of columns 312 are connected to form a square frame structure. That is, the pair of cross beams 311 are disposed oppositely, the pair of upright columns 312 are also disposed oppositely, and the pair of upright columns 312 and the pair of cross beams 311 are connected end to form a square frame, so that the reinforcing structure 31 has stable stress performance, and the reinforcing structure 31 forms a stable frame stress system. The cross beam 311 and the vertical column 312 are fixedly arranged on the periphery of the hole 101 formed on the duct piece 20, so that the reinforcing effect on the duct piece 20 can be achieved, and the hole 101 can also be reinforced.
Further, the side surfaces of the beams 311 and the columns 312, which contact the corresponding tube sheet 20, are adapted to the inner side surface of the corresponding tube sheet 20. Referring to fig. 2, the tube sheet 20 located at the periphery of the connecting passage is a steel tube sheet 21, and the cross beam 311 and the vertical column 312 are fixedly connected to the steel tube sheet 21, preferably by welding. Side face 3111 on crossbeam 311 is the arcwall face, and this side face 3111 and the medial surface looks adaptation of steel-pipe sheet 21 that corresponds, and when connecting, this side face 3111 can closely laminate on the medial surface of steel-pipe sheet 21, has realized the inseparable fixed connection of crossbeam 311 and steel-pipe sheet 21. Similarly, the corresponding side surface of the column 312 is also an arc surface and is matched with the inner side surface of the steel pipe sheet 21, so that the column 312 can be tightly attached and fixed on the inner side surface of the steel pipe sheet 21.
Still further, as shown in fig. 2 and 3, the upright column 312 includes a box-shaped column 3121 and a sealing plate 3122 fixed on one side of the box-shaped column 3121, the sealing plate 3122 is fixed on one side of the box-shaped column 3121 close to or facing the segment of the connecting channel to be constructed, a gap between the box-shaped column 3121 and the corresponding segment 20 is sealed by the sealing plate 3122, and an end portion of the sealing plate 3122 is bent to form a folding edge 3124 attached to the corresponding segment 22, and the upright column 312 is fixed on the corresponding segment 20 by fixedly connecting the folding edge 3124 with the corresponding segment 20. Both ends of this shrouding 3122 all have the hem, including hem 3124 and hem 3123, hem 3123 and the side laminating fixed connection of box post 3121 for the outer surface of shrouding 3122 is parallel and level with another side that corresponds on the box post 3121. The folding edge 3124 is arc-shaped, the folding edge 3124 is adapted to the inner side surface of the corresponding steel pipe sheet 21, and the folding edge 3124 is adhered and fixed on the inner side surface of the corresponding steel pipe sheet 21. The outer surface of the sealing plate 3122 is crescent-shaped.
The cross beam 311 is fixedly connected with both the box-type column 3121 and the seal plate 3122, preferably, the cross beam 311 also adopts a box-type beam, a stable and firm frame stress system is formed by the transverse and longitudinal connection of the cross beam 311 and the upright column 312, and the cross beam is fixed on the steel pipe sheet 21 around the opening 101 of the connecting passage, thereby playing a role of water stopping and reinforcing the opening 101.
As another preferred embodiment of the present invention, as shown in fig. 2, the push pipe receiving structure 33 includes a plurality of structural plates 331 and a plurality of purlins 332, the plurality of structural plates 331 are hermetically connected to form a box body having a rear opening 333, the box body is in butt-sealing connection with the reinforcing structure 31 through the rear opening 333 to form a sealed cabin 30, and the push pipe machine 10 receiving the tunnel through the sealed cabin 30 can ensure that soil and water do not flow into the tunnel during construction. Purlins 332 are fixedly arranged on the outer side of the structural plate 331, the structural strength of the structural plate 331 is reinforced through the purlins 332, and the stress capacity of the box body is improved.
Referring to fig. 3 and 4, the structural plate 331 located at the rear opening 333 is bent toward the rear opening 333 to form an edge 3311, and is fixedly connected to the reinforcing structure 31 through the edge 3311, and a plurality of flange connecting holes 3312 are formed in the edge 3311, and the box body formed by connecting the structural plate 331 is butted with the reinforcing structure 31, and the edge 3311 is attached to the end surfaces of the cross beam 311 and the column 312 of the reinforcing structure 31, so that the flange connecting holes 3312 in the edge 3311 are aligned with the connecting holes in the end surfaces of the cross beam 311 and the column 312, and then are fastened and connected by the penetrating connecting bolts. Preferably, a water stop strip is disposed at the joint between the edge and the reinforcing structure 31 to provide a water stop function and prevent water leakage from the joint into the shield.
Referring to fig. 2 and 5, purlins 332 are attached to the outer side surfaces of the structural plates 331, two purlins 332 arranged at intervals are fixedly arranged on the outer side surface of each structural plate 331, and referring to fig. 6, the ends of the purlins 332 on the structural plates 331 around the box body are connected to form a reinforcing frame body, so that the purlins 332 are connected into a whole to improve the reinforcing strength. Purlins which are transversely and longitudinally arranged are arranged on the structural plates 331 at the top and the bottom of the box body, the purlins which are transversely arranged are fixedly connected with purlins at two side parts, and the purlins which are longitudinally arranged are fixedly connected with the purlins on the structural plates 331 at the front part. Preferably, the structural plates 311 are welded together, and the purlins 332 and the structural plates 311 are also welded together.
Further, as shown in fig. 2, in order to improve the stability of the top pipe receiving structure 33, a reinforcing beam 35 is laid at the bottom of the shield, the reinforcing beam 35 is fixedly arranged at the bottom of the segment 20 of the shield, and the top pipe receiving structure 33 is arranged on the reinforcing beam 35 and is fixedly connected with the reinforcing beam 35. With reinforcing beam 35 fixed connection on push pipe receiving structure 33 and the section of jurisdiction 20 for this push pipe receiving structure 33 has stronger stability, thereby has improved the stability of reinforcement structure 31, has also improved the reinforcement effect to section of jurisdiction 20.
To facilitate the operation of removing a received push bench 10, a structural door is provided on one side of push bench receiving structure 33 through which push bench 10 may be removed by accessing into push bench receiving structure 33. In addition, in order to facilitate the safety of the later-stage sealed cabin 30, a reserved grouting hole 3312 and a reserved safety valve 3313 are provided on the side surface of the top pipe receiving structure 33.
As another preferred embodiment of the present invention, as shown in fig. 1 and 2, the sealed cabin 30 further includes a plurality of ribs 34 spaced apart from each other at the top and bottom of the reinforcing structure 31, and the ribs 34 are fixedly connected to the corresponding tube sheets 20. Fixedly connected a plurality of floor 34 on the crossbeam 311 of reinforcement structure 31, this floor 34 sets up on the side that two crossbeams 311 kept away from mutually, and lateral surface promptly strengthens the structural strength of sealed cabin 30 through floor 34, and floor 34 and section of jurisdiction 20 fixed connection in addition, this floor 34 helps the atress transmission of entrance to a cave 101 department section of jurisdiction 20 for the load on the section of jurisdiction 20 passes through on the effectual transmission to sealed cabin 30 of floor 34, avoids the load to cause the damage to the section of jurisdiction. Preferably, the side surface of the rib plate 34 corresponding to the tube sheet 20 is matched with the inner side surface of the tube sheet 20, so that the rib plate 34 can be tightly attached and fixed on the tube sheet 20.
After the sealing cabin for the shield interval connecting channel to push the pipe into the hole is installed, the pipe pushing machine can enter the hole. Firstly, the sealed cabin effectively protects water leaked from gaps generated by the grinding shield segments of the top pipe in the process of entering the tunnel, so that water seepage at the tunnel opening formed by the grinding segments is avoided; secondly the sealed cabin adopts the frame construction system, fixes on the peripheral section of jurisdiction in entrance to a cave for can cooperate the inside reinforced structure of shield to form effectual entrance to a cave additional strengthening when the push bench grinds entrance to a cave department shield section of jurisdiction, and the sealed cabin is together fixed with section of jurisdiction 20 through the push pipe receiving structure 33 that sets up, has improved the additional strengthening, has further guaranteed whole work progress's safety. Through experimental tests, the sealed cabin has excellent mechanical properties and good waterproof performance, and can improve the integral rigidity and bearing capacity of the tunnel and improve the safety during construction.
As shown in fig. 7, which shows a side view of the reinforcing structure 31, when the reinforcing structure 31 is removed after the construction of the connecting channel is completed, the hatched portion shown in fig. 7 is cut away, leaving a partial structure at the periphery of the opening to connect the structures to be subsequently installed at the opening. After cutting off a part of the beam 311, an end seal plate 3112 is provided at a part of the beam 311 remaining on the tube sheet 20 to improve the strength of the remaining part.
The construction method of the shield interval connecting channel top pipe entering sealed cabin provided by the invention is explained below.
The invention provides a construction method for a shield interval connecting channel top pipe entering sealed cabin, which comprises the following steps:
as shown in fig. 1 and fig. 2, providing a reinforcing structure 31, disposing the reinforcing structure 31 on the periphery of the corresponding connecting channel on the shield segment, and attaching and fixing the reinforcing structure 31 on the corresponding segment 20;
installing a sealing brush 32 on the surface of the reinforcing structure 31, which faces to the push bench 10 to be tunneled, and sealing a gap between the reinforcing structure 31 and the push bench 10 through the sealing brush 32 when the push bench is tunneled; and
and providing a pipe jacking receiving structure 33, placing the pipe jacking receiving structure 33 in the shield, and butting and connecting the pipe jacking receiving structure 33 with the reinforcing structure 31 so as to receive the pipe jacking machine 10 entering the tunnel.
The sealed cabin can effectively prevent water when the jacking pipe enters the tunnel, and prevent water in a soil body from flowing into the shield channel. And this sealed cabin still reinforces the connecting channel entrance to a cave, through consolidating the section of jurisdiction structure, guarantees the feasibility of construction, and the reinforcing push pipe construction forms the entrance to the weakening of section of jurisdiction structural mechanics performance, has solved the problem that push pipe grinding section of jurisdiction produces the influence to structural safety and reliability.
As a preferred embodiment of the present invention, the reinforcement structure 31 includes:
providing a pair of cross beams 311 and a pair of uprights 312; a pair of beams 311 and a pair of columns 312 are attached and fixed on the corresponding tube sheet 20;
the ends of the columns 312 are fixedly connected with the corresponding ends of the pair of beams 311, so that the pair of beams 311 and the pair of columns 312 are connected in a surrounding manner to form a block structure.
The pair of cross beams 311 are disposed oppositely, the pair of columns 312 are also disposed oppositely, and the pair of columns 312 and the pair of cross beams 311 are connected end to form a square frame, so that the reinforcing structure 31 has stable stress performance, and the reinforcing structure 31 forms a stable frame stress system.
Further, still include:
as shown in fig. 2 and 3, the side surfaces of the beams 311 and the columns 312, which contact the corresponding tube sheet 20, are designed to be matched with the inner side surface of the corresponding tube sheet 20, so that the side surfaces of the beams 311 and the columns 312 can be closely attached to the inner side surface of the corresponding tube sheet 20.
The pipe piece 20 around the connecting passage is a steel pipe piece 21, and the cross beam 311 and the upright column 312 are fixedly connected to the steel pipe piece 21, preferably by welding. Side face 3111 on crossbeam 311 is the arcwall face, and this side face 3111 and the medial surface looks adaptation of steel-pipe sheet 21 that corresponds, and when connecting, this side face 3111 can closely laminate on the medial surface of steel-pipe sheet 21, has realized the inseparable fixed connection of crossbeam 311 and steel-pipe sheet 21. Similarly, the corresponding side surface of the column 312 is also an arc surface and is matched with the inner side surface of the steel pipe sheet 21, so that the column 312 can be tightly attached and fixed on the inner side surface of the steel pipe sheet 21.
Still further, providing the post comprises:
as shown in fig. 2 and 3, a box-shaped column 3121 and a sealing plate 3122 are provided, the sealing plate 3122 has a folding edge at both ends, including a folding edge 3123 and a folding edge 3124, and the folding edge 3123 of the sealing plate 3122 is attached and fixed on the side of the box-shaped column 3122 facing the corresponding tube sheet 20;
the folding edge 3124 of the sealing plate 2122 is designed to be matched with the inner side surface of the corresponding tube piece 20 and is attached and fixed on the corresponding tube piece 20, so that the gap between the box-type column 3121 and the corresponding tube piece 20 is sealed by the sealing plate 3122. The outer surface of the sealing plate 3122 is crescent-shaped.
The cross beam 311 is fixedly connected with both the box-type column 3121 and the seal plate 3122, preferably, the cross beam 311 also adopts a box-type beam, a stable and firm frame stress system is formed by the transverse and longitudinal connection of the cross beam 311 and the upright column 312, and the cross beam is fixed on the steel pipe sheet 21 around the opening 101 of the connecting passage, thereby playing a role of water stopping and reinforcing the opening 101.
As another preferred embodiment of the present invention, as shown in fig. 2, providing the top pipe receiving structure 33 includes: providing a structural plate 331, hermetically connecting the structural plate 331 to form a box body with a rear opening 333, providing a purlin 332, fixedly arranging the purlin 332 at the outer side of the structural plate 331, thereby forming a top pipe receiving structure 33,
the box body is in butt-joint sealing connection with the reinforcing structure 31 through the rear side opening 333, so that a sealed cabin 30 is formed, and the push bench 10 entering the tunnel is received through the sealed cabin 30, so that water and soil can be prevented from flowing into the tunnel during construction. Purlins 332 are fixedly arranged on the outer side of the structural plate 331, the structural strength of the structural plate 331 is reinforced through the purlins 332, and the stress capacity of the box body is improved.
Referring to fig. 3 and 4, the structural plate 331 located at the rear opening 333 is bent toward the rear opening 333 to form an edge 3311, and is fixedly connected to the reinforcing structure 31 through the edge 3311, and a plurality of flange connecting holes 3312 are formed in the edge 3311, and the box body formed by connecting the structural plate 331 is butted with the reinforcing structure 31, and the edge 3311 is attached to the end surfaces of the cross beam 311 and the column 312 of the reinforcing structure 31, so that the flange connecting holes 3312 in the edge 3311 are aligned with the connecting holes in the end surfaces of the cross beam 311 and the column 312, and then are fastened and connected by the penetrating connecting bolts. Preferably, a water stop strip is disposed at the joint between the edge and the reinforcing structure 31 to provide a water stop function and prevent water leakage from the joint into the shield.
Referring to fig. 2 and 5, purlins 332 are attached to the outer side surfaces of the structural plates 331, two purlins 332 arranged at intervals are fixedly arranged on the outer side surface of each structural plate 331, and referring to fig. 6, the ends of the purlins 332 on the structural plates 331 around the box body are connected to form a reinforcing frame body, so that the purlins 332 are connected into a whole to improve the reinforcing strength. Purlins which are transversely and longitudinally arranged are arranged on the structural plates 331 at the top and the bottom of the box body, the purlins which are transversely arranged are fixedly connected with purlins at two side parts, and the purlins which are longitudinally arranged are fixedly connected with the purlins on the structural plates 331 at the front part. Preferably, the structural plates 311 are welded together, and the purlins 332 and the structural plates 311 are also welded together.
Further, as shown in fig. 2, the method further includes: and laying a reinforcing beam 35 at the bottom of the shield, and placing the top pipe receiving structure 33 on the reinforcing beam 35 and fixedly connecting with the reinforcing beam 35. Thereby improving the stability of the top pipe receiving structure 33. The reinforcing beam 35 is fixedly arranged at the bottom of the segment 20 of the shield, and the jacking pipe receiving structure 33 is arranged on the reinforcing beam 35 and fixedly connected with the reinforcing beam 35. With reinforcing beam 35 fixed connection on push pipe receiving structure 33 and the section of jurisdiction 20 for this push pipe receiving structure 33 has stronger stability, thereby has improved the stability of reinforcement structure 31, has also improved the reinforcement effect to section of jurisdiction 20.
To facilitate the operation of removing a received push bench 10, a structural door is provided on one side of push bench receiving structure 33 through which push bench 10 may be removed by accessing into push bench receiving structure 33. In addition, in order to facilitate the safety of the later-stage sealed cabin 30, a reserved grouting hole 3312 and a reserved safety valve 3313 are provided on the side surface of the top pipe receiving structure 33.
As another preferred embodiment of the present invention, the present invention further includes:
as shown in fig. 1 and 2, rib plates 34 are provided, rib plates 34 are disposed at intervals on the top and bottom of reinforcing structure 31 for connection, and rib plates 34 are fixedly connected to corresponding segments 20.
As shown in fig. 1, a plurality of rib plates 34 are fixedly connected to the cross beam 311 of the reinforcing structure 31, the rib plates 34 are disposed on the side surfaces, away from the two cross beams 311, that is, the outer side surfaces, of the two cross beams 311, the structural strength of the sealed cabin 30 is enhanced by the rib plates 34, in addition, the rib plates 34 are fixedly connected to the segment 20, the rib plates 34 facilitate the force transmission of the segment 20 at the opening 101, so that the load on the segment 20 is effectively transmitted to the sealed cabin 30 through the rib plates 34, and the damage of the load to the segment is avoided. Preferably, the side surface of the rib plate 34 corresponding to the tube sheet 20 is matched with the inner side surface of the tube sheet 20, so that the rib plate 34 can be tightly attached and fixed on the tube sheet 20.
As shown in fig. 7, which shows a side view of the reinforcing structure 31, when the reinforcing structure 31 is removed after the construction of the connecting channel is completed, the hatched portion shown in fig. 7 is cut away, leaving a partial structure at the periphery of the opening to connect the structures to be subsequently installed at the opening. After cutting off a part of the beam 311, an end seal plate 3112 is provided at a part of the beam 311 remaining on the tube sheet 20 to improve the strength of the remaining part.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (4)
1. A construction method for a shield interval connecting channel top pipe entering sealing cabin is characterized by comprising the following steps:
providing a reinforcing structure, arranging the reinforcing structure on the periphery of the corresponding connecting channel on the shield segment, and fixedly connecting the reinforcing structure with the corresponding segment in an attaching manner; providing a reinforcing structure includes:
providing a pair of beams and a pair of columns, and attaching and fixing the beams and the columns on the corresponding pipe sheets;
fixedly connecting the end parts of the stand columns with the corresponding end parts of the pair of cross beams, so that the pair of cross beams and the pair of stand columns are connected in a surrounding manner to form a square frame structure; the upright post comprises a box-shaped post and a sealing plate, a gap between the box-shaped post and the corresponding duct piece is sealed by the sealing plate, and the end part of the sealing plate is bent to form a folded edge attached to the corresponding duct piece and fixedly connected with the corresponding duct piece through the folded edge;
installing a sealing brush on the surface of the reinforcing structure, which faces a pipe jacking machine to be tunneled, and sealing a gap between the reinforcing structure and the pipe jacking machine through the sealing brush when the pipe jacking machine is tunneled; and
providing a pipe jacking receiving structure, placing the pipe jacking receiving structure in a shield and connecting the pipe jacking receiving structure with the reinforcing structure in a butt joint manner so as to receive a pipe jacking machine entering the tunnel;
providing a push pipe receiving structure comprising:
providing a structural plate, and connecting the structural plate in a sealing manner to form a box body with a rear opening;
providing a purlin, and fixedly arranging the purlin on the outer side of the structural slab, so that a jacking pipe receiving structure is formed;
the structure plate positioned at the rear side opening is bent towards the rear side opening to form an edge, a water stop strip is clamped at the joint of the edge and the reinforcing structure, and the box body is in butt joint and sealing connection with the reinforcing structure through the rear side opening to form a sealed cabin;
the ends of purlines on the structural plates around the box body are connected to form a reinforced frame body;
further comprising:
and providing ribbed slabs, arranging the ribbed slabs at intervals at the top and the bottom of the reinforcing structure, and fixedly connecting the ribbed slabs with the corresponding segments.
2. The construction method of the shield interval connecting channel top pipe entering sealing cabin according to claim 1, further comprising:
laying a reinforcing beam at the bottom of the shield;
and arranging the jacking pipe receiving structure on the reinforcing beam and fixedly connecting the jacking pipe receiving structure with the reinforcing beam.
3. The utility model provides a shield constructs regional connecting channel push pipe and advances hole sealed cabin which characterized in that includes:
the reinforcing structures are arranged on the shield pipe piece and correspond to the periphery of the connecting channel, and the reinforcing structures are attached and fixed to the corresponding pipe piece; the reinforcing structure comprises a pair of beams and a pair of stand columns, the beams and the stand columns are fixedly attached to the corresponding duct pieces, and the end parts of the stand columns are fixedly connected with the corresponding end parts of the beams so that the beams and the stand columns are connected in a surrounding manner to form a square frame structure; the upright post comprises a box-shaped post and a sealing plate, a gap between the box-shaped post and the corresponding duct piece is sealed by the sealing plate, and the end part of the sealing plate is bent to form a folded edge attached to the corresponding duct piece and fixedly connected with the corresponding duct piece through the folded edge;
the sealing brush is arranged on the surface of the pipe jacking machine to be tunneled on the reinforcing structure, and when the pipe jacking machine is tunneled, the sealing brush is used for sealing a gap between the reinforcing structure and the pipe jacking machine; and
the pipe jacking receiving structure is arranged in the shield and used for receiving the pipe jacking machine entering the tunnel, and the pipe jacking receiving structure is in butt joint connection with the reinforcing structure;
the pipe jacking receiving structure comprises a plurality of structural plates and a plurality of purlins, the structural plates are connected in a sealing mode to form a box body with a rear opening, the purlins are fixedly arranged on the outer sides of the structural plates, and the ends of the purlins on the structural plates on the periphery of the box body are connected to form a reinforcing frame body;
the structure plate positioned at the rear side opening is bent towards the rear side opening to form an edge, a water stop strip is clamped at the joint of the edge and the reinforcing structure, and the box body is in butt joint and sealing connection with the reinforcing structure through the rear side opening to form a sealed cabin;
still including the interval set up in the floor of the top and the bottom of reinforcement structure, the floor and the section of jurisdiction fixed connection that corresponds.
4. The shield interval connecting channel top pipe hole-entering sealed cabin of claim 3, wherein a reinforcing beam is laid at the bottom of the shield;
the jacking pipe receiving structure is arranged on the reinforcing beam and is fixedly connected with the reinforcing beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296137.4A CN108561138B (en) | 2018-03-30 | 2018-03-30 | Shield interval connecting channel top pipe entering sealed cabin and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296137.4A CN108561138B (en) | 2018-03-30 | 2018-03-30 | Shield interval connecting channel top pipe entering sealed cabin and construction method thereof |
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| Publication Number | Publication Date |
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| CN108561138A CN108561138A (en) | 2018-09-21 |
| CN108561138B true CN108561138B (en) | 2021-01-05 |
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| CN114060040A (en) * | 2021-11-11 | 2022-02-18 | 上海市基础工程集团有限公司 | Horizontal T-joint construction method for directly jacking pipe into shield tunnel |
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| CN100501124C (en) * | 2006-09-04 | 2009-06-17 | 上海隧道工程股份有限公司 | Construction method for tunnel contact passage in shield section of underground railway |
| JP4947724B2 (en) * | 2008-03-27 | 2012-06-06 | 株式会社アルファシビルエンジニアリング | Vertical wellhead equipment |
| CN102644467B (en) * | 2012-04-27 | 2015-01-07 | 上海隧道工程股份有限公司 | Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine |
| CN107083963A (en) * | 2017-04-05 | 2017-08-22 | 宁波大学 | A kind of shield tunnel originates sealing device and its application method |
| CN107676097B (en) * | 2017-08-27 | 2019-09-13 | 中铁十二局集团有限公司 | A kind of high hydraulic pressure soft soil layer HFE composite shield originating method |
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