CN117127999A - Synchronous construction method for double working surfaces of internal structure of single-pipe double-layer shield tunnel - Google Patents
Synchronous construction method for double working surfaces of internal structure of single-pipe double-layer shield tunnel Download PDFInfo
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- CN117127999A CN117127999A CN202311182620.7A CN202311182620A CN117127999A CN 117127999 A CN117127999 A CN 117127999A CN 202311182620 A CN202311182620 A CN 202311182620A CN 117127999 A CN117127999 A CN 117127999A
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- 238000010276 construction Methods 0.000 title claims abstract description 61
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 24
- 239000004575 stone Substances 0.000 claims abstract description 6
- 238000011065 in-situ storage Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 7
- 230000005641 tunneling Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000008520 organization Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
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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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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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
- E21D11/04—Lining with building materials
-
- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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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
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application discloses a synchronous construction method for double working surfaces of an inner structure of a single-pipe double-layer shield tunnel, which relates to the field of shield tunnel construction and comprises the following steps: dividing the construction section in the single-pipe double-layer shield tunnel into a first working face and a second working face; synchronously constructing the first working surface and the second working surface; wherein the first working surface comprises: prefabricated mouth parts spliced in shield segments; prefabricated edge box culverts assembled on two sides of the prefabricated mouth piece; the anti-collision kerbstone base is arranged on the outer side of the prefabricated side box culvert and fixedly connected with the shield segment; the second working surface includes: the prefabricated upright posts are assembled on the anti-collision kerbstone base, and the upper layer lane plates and the connecting beams are arranged above the prefabricated upright posts; the anti-collision side stone assembly comprises prefabricated anti-collision side stones assembled on the upper layer lane plate and a cover plate assembled on the connecting beam. The application opens up double working face construction, the lower layer construction and the upper layer construction are not mutually interfered, the construction period is shortened, and the manpower input is reduced.
Description
Technical Field
The application relates to the field of shield tunnel construction, in particular to a synchronous construction method for double working surfaces of an inner structure of a single-pipe double-layer shield tunnel.
Background
Since the industrial revolution, resources and wealths are highly concentrated in space, and the development of the traffic industry in China is rapidly promoted. Under the background, people have more and more knowledge about solving the contradiction between human survival and ground environment by adopting underground engineering, the demand for underground space development is gradually increased, and more large-diameter single-pipe double-layer shield tunnels are applied to the construction of tunnels in the fields of highways, municipal administration and the like.
However, due to densely distributed pipelines in the shield tunneling process, the requirement of material transportation in the shield tunneling process is met, and the internal space of a tunnel is relatively narrow in the shield tunneling process. In the conventional cast-in-situ construction, the segments of the inner structure of the single-pipe double-layer tunnel and the single-box mouth parts are synchronously assembled, the lower layer structure is delayed from tunneling, and after the shield tunneling is completed, the upper layer lane plate and the auxiliary construction are started to be constructed, so that a quite long construction period and quite large cost are required to be increased; the development of the full-prefabricated assembly technology of the shield tunnel is imperfect, and the assembly construction of the internal structure greatly reduces the flexibility of segment manufacture and assembly, and the assembly effect is unsatisfactory.
Therefore, how to effectively solve the synchronous construction of the internal structure of the single-pipe double-layer tunnel and improve the synchronous construction speed is a great technical problem faced by the single-pipe double-layer tunnel.
Disclosure of Invention
In order to solve the technical defects in the prior art, the application provides a single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method, which opens up double-working-face construction, ensures that lower-layer construction and upper-layer construction are not mutually interfered, shortens construction period, reduces labor investment and can effectively solve the problems in the background art.
The application provides a single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method which adopts the following technical scheme:
a single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method comprises the following steps:
the construction section in the single-pipe double-layer shield tunnel is divided into a first working surface and a second working surface;
the first working surface includes:
installing a prefabricated mouth piece in the shield segment;
installing prefabricated edge box culverts on two sides of the prefabricated mouth piece;
casting an anti-collision kerbstone base fixedly connected with the shield segment on the outer side of the prefabricated side box culvert in a vertical mould manner;
assembling prefabricated upright posts on the anti-collision kerbstone base;
the second working surface includes:
standing a mould above the prefabricated upright post to cast an upper layer lane plate and a connecting beam;
and (3) installing prefabricated anti-collision curbstones on the upper layer lane plates, and installing prefabricated cover plates on the connecting beams.
In any of the above schemes, it is preferable that the prefabricated mouth piece and the prefabricated side box culvert are provided with corresponding bolt holes and hand holes, and bolts penetrate through the corresponding bolt holes to fixedly connect the prefabricated mouth piece and the prefabricated side box culvert.
In any of the above schemes, it is preferable that the crashproof kerbstone base is cast by adopting a manual vertical mould, the reinforcing steel bars of the crashproof kerbstone base are inserted into the shield segment, and reinforcing steel bar trepanning holes are reserved on the crashproof kerbstone base.
In any of the above schemes, it is preferable that the reserved steel bar joints of the prefabricated upright posts are inserted into reserved steel bar trepanning holes on the anti-collision kerbstone base, and grouting in the trepanning holes ensures tight connection.
In any of the above-described embodiments, it is preferable that the upper layer lane plate and the connecting beam are erected and cast simultaneously by using a formwork trolley.
In any of the above schemes, it is preferable that the upper layer lane plate is integrally cast with the connecting beam when cast, and the upper layer lane plate is cast-in-situ connected with the reserved column member joint, so that the integrity of the upper layer lane structure beam plate column is ensured.
In any of the above schemes, it is preferable that the connecting beams are arranged at equal intervals along the longitudinal direction of the tunnel, one end of each connecting beam is fixedly connected with the longitudinal beam of the upper layer lane plate, and the other end of each connecting beam is fixedly connected with the shield segment.
In any of the above schemes, it is preferable that the prefabricated crashproof curbs are fixed to both sides of the upper layer lane board.
In any of the above schemes, preferably, the prefabricated cover plate stands on the connecting beam, and the gap between the prefabricated cover plate and the shield segment is closed by cast-in-situ fine stone concrete.
In summary, the present application includes at least one of the following beneficial technical effects: the prefabricated mouth parts of the tunnel and the prefabricated side box culverts are constructed synchronously, the working face reaches a plurality of standard lane widths, the separation of people and vehicles can be realized, and the speed of construction vehicles is improved; the prefabricated mouth parts, the prefabricated side box culverts, the prefabricated upright posts and the prefabricated anti-collision facilities adopt a prefabricated assembly process, so that the pipelining operation is realized, and the construction efficiency is higher; the upper layer lane plate is operated by using a template trolley, the process steps are few, the connecting beam and the upper layer lane plate are integrally poured, the structural rigidity is high, and the shock resistance is good; the double working surfaces are opened up in the tunnel for construction, the lower layer construction and the upper layer construction are not mutually interfered, the construction period is shortened, the manpower investment is reduced, and the construction organization difficulty and the technical difficulty are small.
Drawings
FIG. 1 is a flow chart of a synchronous construction method of double working surfaces of an inner structure of a single-pipe double-layer shield tunnel;
FIG. 2 is a cross-sectional effect diagram of the inner structure of the shield tunnel by the double working faces synchronous construction method of the inner structure of the single-pipe double-layer shield tunnel;
FIG. 3 is a schematic diagram of the installation of connecting beams and cover plates of the method for synchronously constructing the double working surfaces of the inner structure of the single-pipe double-layer shield tunnel;
FIG. 4 is a schematic diagram of the installation of prefabricated mouth parts and side box culverts of the double working faces synchronous construction method of the internal structure of the single-pipe double-layer shield tunnel;
FIG. 5 is a schematic diagram of an upper layer lane plate template trolley for a single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method;
fig. 6 is a longitudinal flow chart of the construction of the inner structure of the single-pipe double-layer shield tunnel by the synchronous construction method of the double working surfaces.
Reference numerals: 1. prefabricating the mouth piece; 2. prefabricating a side box culvert; 3. an anti-collision kerbstone base; 4. prefabricating upright posts; 5. shield segments; 6. an upper layer lane board; 61. a longitudinal beam; 7. a tie beam; 8. a template trolley; 9. prefabricating anti-collision curbstones; 10. and prefabricating the cover plate.
Detailed Description
In order to make the technical scheme and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In order to better understand the above technical solutions, the present application will be described in further detail with reference to fig. 1 to 6.
As shown in fig. 1 to 6, a method for synchronously constructing a double working surface of an inner structure of a single-pipe double-layer shield tunnel includes:
the construction section in the single-pipe double-layer shield tunnel is divided into a first working surface and a second working surface;
the first working surface includes:
installing a prefabricated opening sub-component 1 in a shield segment 5;
mounting prefabricated side box culverts 2 on two sides of the prefabricated mouth piece 1;
casting an anti-collision kerbstone base 3 fixedly connected with the shield segment 5 on the outer side of the prefabricated side box culvert 2 in a vertical mould manner;
assembling prefabricated upright posts 4 on the anti-collision kerbstone base 3;
the second working surface includes:
casting an upper layer lane plate 6 and a connecting beam 7 on the prefabricated upright post 4;
the prefabricated anti-collision kerbstone 9 is arranged on the upper layer lane plate 6, and the prefabricated cover plate 10 is arranged on the connecting beam 7.
In the embodiment of the application, the distance between the two working surfaces is 30-50m, so that the mutual interference of the upper layer operation and the lower layer operation is avoided; conveying the prefabricated mouth piece 1 and the prefabricated side box culvert 2 into a frame of a shield tunneling machine, synchronously installing the prefabricated mouth piece 1 and the prefabricated side box culvert 2 by using an assembling machine in the shield tunneling process, constructing the prefabricated mouth piece 1 and the prefabricated side box culvert 2 of a tunnel at the same time, enabling a working face to reach a plurality of standard lane widths, realizing man-vehicle separation, and improving the speed of a construction vehicle; the prefabricated mouth sub-piece 1, the prefabricated side box culvert 2, the prefabricated cover plate 10, the prefabricated upright post 4 and the anti-collision kerbstone 9 adopt a prefabricated assembly process, so that the pipelining operation is realized, and the construction efficiency is higher; the upper layer lane plate 6 is cast in situ by using a template trolley, the process steps are few, the connecting beam 7 and the upper layer lane plate 6 are cast integrally, the structural rigidity is high, and the anti-seismic performance is good; the double working face construction is developed, the lower layer construction and the upper layer construction are not mutually interfered, the construction period is shortened, the manpower investment is reduced, and the construction organization difficulty and the technical difficulty are small.
As shown in fig. 1 to 6, corresponding bolt holes and hand holes are formed in the prefabricated mouth piece 1 and the prefabricated side box culvert 2, and bolts penetrate through the corresponding bolt holes to fixedly connect the prefabricated mouth piece 1 and the prefabricated side box culvert 2.
In the embodiment of the application, a worker can conveniently install the bolt through the hand hole, so that the bolt is convenient to maintain and replace, and the working efficiency is improved; through the fixed connection of bolt, link together prefabricated mouthful sub-piece 1 and prefabricated limit box culvert 2, form a overall structure, can provide sufficient intensity and rigidity, ensure firm connection between the component to guarantee the stability and the security of whole structure.
As shown in fig. 1 to 6, the crashproof kerbstone base 3 is cast by adopting a manual vertical mould, part of the reinforcing steel bars of the crashproof kerbstone base 3 are inserted into the shield segment 5, and reinforcing steel bar trepanning is reserved on the crashproof kerbstone base 3.
In the embodiment of the application, the anti-collision kerbstone base 3 is poured by adopting a manual vertical mould, part of reinforcing steel bars of the anti-collision kerbstone base 3 are inserted into the shield segment 5, and the stable connection of the anti-collision kerbstone base 3 and the shield segment 5 can be ensured by the reinforcing steel bars, so that a stable foundation is provided for an upper structure, and the stability and the bearing capacity of the structure are improved; the cast-in-situ anti-collision kerbstone base 3 is reserved with a steel bar trepanning to ensure that the prefabricated upright post 4 is reliably connected with the anti-collision kerbstone base 3.
As shown in fig. 1 to 6, the reserved steel bar joints of the prefabricated upright posts 4 are inserted into reserved steel bar trepanning on the anti-collision kerbstone base 3, and grouting in the trepanning ensures tight connection.
In the embodiment of the application, when the reserved steel bar joint of the prefabricated upright post 4 is inserted into the steel bar trepanning, the position is adjusted and grouting is carried out at the joint, so that the prefabricated upright post 4 and the anti-collision kerbstone base 3 can be firmly connected, the stability and the bearing capacity of the prefabricated upright post can be increased, the prefabricated upright post can better bear external loads such as vehicles, earthquakes and the like, and the integral strength of the structure is improved.
As shown in fig. 1 to 6, the upper layer lane plate 6 and the connecting beam 7 are molded and poured by using a template trolley 8, and the upper layer lane plate 6 and the connecting beam 7 are molded and poured simultaneously; the upper layer lane plate 6 is connected with the reserved upright post 4 member joint in a cast-in-situ manner, so that the integrity of the beam plate column body of the upper layer lane structure is ensured.
In the embodiment of the application, the template trolley 8 is used for operation, so that the process steps are few, the construction efficiency can be improved, and the working intensity of site workers can be reduced; the upper layer lane plate 6 and the connecting beam 7 are integrally poured, the structural rigidity is high, the anti-seismic performance is good, the longitudinal beam 61 is used as a component part of the upper layer lane plate 6 to play a role of structural support, and the cast-in-situ connection of the longitudinal beam 61 and the upper end joint of the prefabricated upright 4 member ensures the structural beam-slab column system integrity of the upper layer lane structure and ensures the strength and the stability of the whole structure during installation; the girder 61 and prefabricated stand 4 connected mode can realize the load transmission on the upper lane board 6, and when vehicle or other load passes through upper lane board 6, girder 61 transmits the load for prefabricated stand 4, by stand 4 transmit crashproof kerbstone base 3 and shield segment 5 again to realize the effective transmission of load, guarantee stability and the security of structure.
As shown in fig. 1 to 6, the connecting beams 7 are arranged at equal intervals in the longitudinal direction of the tunnel, one end of each connecting beam is fixedly connected with the longitudinal beam 61 of the upper layer lane plate 6, and the other end of each connecting beam is fixedly connected with the shield segment 5.
In the embodiment of the application, the upper layer lane plate 6 and the connecting beam 7 are integrally poured, one end of the connecting beam 7 is fixedly connected with the longitudinal beam 61 of the upper layer lane plate 6, and the other end of the connecting beam 7 is fixedly connected with the shield segment 5, so that the upper layer lane plate 6 and the shield segment 5 can be communicated, and firm connection between the upper layer lane plate 6 and the shield segment 5 is realized; the connecting beam 7 is connected with the upper layer lane plate 6 into a whole, and plays a role in bearing the dynamic load of the vehicle.
As shown in fig. 1 to 6, crashproof curbs 9 are fixed to both sides of the upper layer lane board 6; the prefabricated cover plate 10 is erected on the connecting beam 7, and a gap between the prefabricated cover plate and the shield segment 5 is closed by cast-in-situ fine stone concrete.
In the embodiment of the application, the crashproof curbstone 9 is a protection facility and is used for protecting vehicles and pedestrians from collision injury possibly occurring in the running process of the vehicles; the prefabricated cover plate 10 is erected on the connecting beam 7, the gap between the prefabricated cover plate 10 and the shield segment 5 is filled with cast-in-situ fine stone concrete, and the single-pipe double-layer shield tunnel is isolated into double layers which are not communicated up and down, so that the fireproof and smoke exhaust effects are facilitated.
The above is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that the present application is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A synchronous construction method for double working surfaces of an inner structure of a single-pipe double-layer shield tunnel is characterized by comprising the following steps: comprising the following steps:
dividing the construction section in the single-pipe double-layer shield tunnel into a first working face and a second working face;
synchronously constructing the first working surface and the second working surface;
wherein the first working surface comprises: a prefabricated mouth sub-piece (1) spliced in the shield segment (5); prefabricated edge box culverts (2) spliced on two sides of the prefabricated mouth sub-piece (1); an anti-collision kerbstone base (3) which is arranged at the outer side of the prefabricated side box culvert (2) and fixedly connected with the shield segment (5); and the prefabricated upright post (4) is assembled on the anti-collision kerbstone base (3).
The second working surface includes: an upper layer lane plate (6) and a connecting beam (7) which are arranged above the prefabricated upright post (4); the prefabricated anti-collision kerbstone (9) assembled on the upper layer lane plate (6) and the cover plate (10) assembled on the connecting beam (7).
2. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 1, characterized by comprising the following steps: the first working face construction includes:
installing a prefabricated mouth piece (1) in the shield segment (5);
the prefabricated edge box culverts (2) are arranged on two sides of the prefabricated opening sub-piece (1);
casting an anti-collision kerbstone base (3) fixedly connected with the shield segment (5) on the outer side of the prefabricated side box culvert (2) through a vertical mould;
assembling prefabricated upright posts (4) on the anti-collision kerbstone base (3);
the second working face construction includes:
casting an upper layer lane plate (6) and a connecting beam (7) on the prefabricated upright post (4) by vertical mould;
the prefabricated anti-collision kerbstone (9) is arranged on the upper layer lane plate (6), and the prefabricated cover plate (10) is arranged on the connecting beam (7).
3. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 2, characterized by comprising the following steps: corresponding bolt holes and hand holes are formed in the prefabricated opening sub-piece (1) and the prefabricated side box culvert (2), and bolts penetrate through the corresponding bolt holes to fixedly connect the prefabricated opening sub-piece (1) with the prefabricated side box culvert (2).
4. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 3, characterized by comprising the following steps: the anti-collision kerbstone base (3) is poured by adopting a manual vertical die, partial reinforcing steel bars of the anti-collision kerbstone base (3) are inserted into the shield segment (5), and reinforcing steel bar trepanning is reserved on the anti-collision kerbstone base (3).
5. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 4, characterized by comprising the following steps: reserved steel bar joints of the prefabricated upright posts (4) are inserted into reserved steel bar trepanning on the anti-collision kerbstone base (3), and grouting in the trepanning ensures tight connection.
6. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 5, characterized by comprising the following steps: and (3) setting up the mould of the upper layer lane plate (6) and the connecting beam (7) and casting by using a template trolley (8), and setting up the mould and casting the upper layer lane plate (6) and the connecting beam (7) at the same time.
7. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 6, characterized by comprising the following steps: and when the upper layer lane plate (6) is poured, the upper layer lane plate (6) and the connecting beam (7) are integrally poured, and the upper layer lane plate (6) is connected with the reserved upright post (4) component joint in a cast-in-situ manner, so that the integrity of the beam plate column body of the upper layer lane structure is ensured.
8. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 7, characterized by comprising the following steps: the connecting beams (7) are longitudinally arranged at equal intervals along the tunnel, one end of each connecting beam is fixedly connected with a longitudinal beam (61) of the upper layer lane plate (6), and the other end of each connecting beam is fixedly connected with the shield segment (5).
9. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 8, characterized by comprising the following steps: the anti-collision curbstone (9) is fixed on two sides of the upper layer lane plate (6).
10. The single-pipe double-layer shield tunnel internal structure double-working-face synchronous construction method according to claim 9, characterized by comprising the following steps: the prefabricated cover plate (10) is erected on the connecting beam (7), and a gap between the prefabricated cover plate and the shield segment (5) is closed by cast-in-situ fine stone concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311182620.7A CN117127999A (en) | 2023-09-14 | 2023-09-14 | Synchronous construction method for double working surfaces of internal structure of single-pipe double-layer shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311182620.7A CN117127999A (en) | 2023-09-14 | 2023-09-14 | Synchronous construction method for double working surfaces of internal structure of single-pipe double-layer shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117127999A true CN117127999A (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311182620.7A Pending CN117127999A (en) | 2023-09-14 | 2023-09-14 | Synchronous construction method for double working surfaces of internal structure of single-pipe double-layer shield tunnel |
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| CN (1) | CN117127999A (en) |
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2023
- 2023-09-14 CN CN202311182620.7A patent/CN117127999A/en active Pending
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