CN216342129U - Connecting channel pipe jacking construction system - Google Patents
Connecting channel pipe jacking construction system Download PDFInfo
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- CN216342129U CN216342129U CN202122975282.5U CN202122975282U CN216342129U CN 216342129 U CN216342129 U CN 216342129U CN 202122975282 U CN202122975282 U CN 202122975282U CN 216342129 U CN216342129 U CN 216342129U
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- prestress
- ring beam
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Abstract
The utility model provides a connecting channel pipe-jacking construction system, which comprises a prestress bench, a prestress support mechanism and a connecting channel, wherein the prestress bench is arranged in a main tunnel through the prestress support mechanism and provides support for the main tunnel, and the prestress bench is used as a platform for starting or receiving pipe-jacking construction and provides support for a pipe-jacking mechanism; the temporary portal ring beam is arranged on the prestress rack, exerts a prestress force through the prestress rack to support the portal of the main tunnel, and is connected with the segment at the portal of the main tunnel. According to the utility model, the prestress supporting mechanism is used for applying prestress support to the main tunnel, so that the structural strength can be improved, and the structural deformation is reduced; the temporary portal ring beam is arranged at the portal so as to improve the structural strength in the pipe jacking construction process.
Description
Technical Field
The utility model relates to the field of communication channels, in particular to a communication channel pipe jacking construction system.
Background
The connecting channels are transverse channels arranged between two main tunnels between two sections, the functions of safely evacuating passengers, draining water, preventing fire and fighting fire of the main tunnels are achieved, the distance between every two adjacent connecting channels is not larger than 600m, the connecting channels for pipe-jacking construction can solve the problems and the defects of safety, quality, progress and cost in freezing method reinforcement and mine method underground excavation construction, receiving and starting of jacking pipes are constructed in the built subway main tunnels, and the problems of small construction space, large construction risk and the like are solved.
However, in the process of starting and receiving, the pipe jacking method needs to break the original main tunnel structure, and the structure is weak before the post-cast ring beam construction of the connection channel opening is completed.
Disclosure of Invention
Aiming at the technical problem, the utility model provides a connecting channel pipe-jacking construction system which is used for solving the problem that the structure is weak due to the fact that the main tunnel is damaged in pipe-jacking construction in the prior art.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a connecting channel pipe-jacking construction system comprises a prestress bench, a prestress support mechanism and a connecting channel, wherein the prestress bench is arranged in a main tunnel through the prestress support mechanism and provides support for the main tunnel, and the prestress bench is used as a platform for starting or receiving pipe-jacking construction and provides support for a pipe-jacking mechanism; the temporary portal ring beam is arranged on the prestress rack, exerts a prestress force through the prestress rack to support the portal of the main tunnel, and is connected with the segment at the portal of the main tunnel. The prestress supporting mechanism applies prestress support to the main tunnel, so that the structural strength can be improved, and the structural deformation is reduced; the temporary portal ring beam is arranged at the portal so as to improve the structural strength in the pipe jacking construction process.
Preferably, in order to facilitate the connection of the temporary portal ring beam with the main tunnel, the temporary portal ring beam is detachably connected or welded with the main tunnel.
Preferably, in order to facilitate the detachable connection of the temporary portal ring beam, a connecting piece is embedded in the main tunnel, and the temporary portal ring beam is detachably connected with the main tunnel through the connecting piece.
Preferably, in order to be convenient for push the contact passage pipe piece into the contact passage from the main tunnel, a sleeve axially extending along a contact passage hole is arranged in the main tunnel, the temporary portal ring beam is detachably connected or welded with the sleeve, and the temporary portal ring beam provides support for the sleeve.
Preferably, for the convenience of better cooperation of communication passageway section of jurisdiction and sleeve, push pipe mechanism sets up in the prestressing force rack, sleeve hoop embedding push pipe mechanism and prestressing force rack between.
Preferably, the problem of narrow spaces in the main tunnel is solved in order to facilitate the movement of the pre-stressing trestle, which is movably arranged in the main tunnel.
Preferably, to facilitate the movement of the pre-stressed platform, the pre-stressed platform is movably arranged in the main tunnel by means of telescopic rollers.
Preferably, for better jacking the main tunnel to apply prestress to the jacking pipe, the prestress supporting mechanism comprises a supporting shoe for jacking the inner wall of the main tunnel and a telescopic supporting piece connected with the supporting shoe, and the supporting shoe is connected with the prestress rack through the telescopic supporting piece.
Preferably, in order to improve efficiency of origination and reception, the pre-stressed trestle is connected with the temporary portal ring beam by means of telescopic supports.
The utility model has the beneficial effects that:
1. the arrangement of the temporary portal ring beam can improve the structural stability from the support removal to the permanent concrete ring beam construction process and reduce deformation;
2. the pre-stressed rack is in an assembled structure and can move in the main tunnel, so that the rack is quick in installation progress and high in adaptability, can be installed outside the main tunnel, and the problem of narrow space in the main tunnel is solved;
3. the prestressed supporting mechanism is used for supporting, so that the rigidity of the main tunnel is improved, the deformation of the main tunnel in the pipe jacking construction process is reduced, and the construction safety is improved;
4. the prestress supporting mechanism can also apply prestress support to the main tunnel, so that the structural strength can be beneficially improved, the structural deformation is reduced, and the safety of the construction process is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention for an originating end;
FIG. 2 is a schematic diagram of a receiving end according to the present invention;
FIG. 3 is a schematic cross-sectional view of an originating primary tunnel of the present invention;
FIG. 4 is a schematic cross-sectional view of a receiving primary tunnel of the present invention;
fig. 5 is a schematic structural diagram of the communication channel and the main tunnel according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 5, the pipe-jacking construction system of the connecting channel according to the embodiment of the present invention includes a prestressed rack 11, the prestressed rack 11 is disposed in a main tunnel through a prestressed support mechanism, the pipe-jacking mechanism is disposed in the prestressed rack 11, the prestressed rack 11 serves as a platform for starting or receiving pipe-jacking construction, on one hand, provides support for the pipe-jacking mechanism, and on the other hand, can apply prestress to the main tunnel through the prestressed support mechanism, and provides support for the main tunnel, which can beneficially improve structural strength, reduce structural deformation, and ensure safety of construction process; the construction system also comprises a temporary portal ring beam 4, wherein the temporary portal ring beam 4 is arranged on the prestressed rack 11, a pre-supporting force is applied through the prestressed rack 11 to support the portal of the main tunnel, and the temporary portal ring beam 4 is connected with a segment at the portal of the main tunnel; in interim portal ring roof beam 4 sets up the portal on main tunnel, and the annular ring of interim portal ring roof beam 4 aligns with the portal, can improve the structural strength in the push pipe work progress through interim portal ring roof beam. The prestressed rack 11 comprises an originating rack and a receiving rack which are respectively arranged in a main tunnel of an originating end and a main tunnel of a receiving end, and an originating tunnel door 2 and a receiving tunnel door 3 are respectively arranged on the main tunnel of the originating end and the main tunnel of the receiving end; temporary portal ring beams 4 are arranged in portals of the initiating end main tunnel and the receiving end main tunnel.
Preferably, as shown in fig. 1 to 5, lining rings 1 are arranged on the main tunnels of the initiating end and the receiving end at positions close to the portal, and the temporary portal ring beam 4 is detachably connected or welded with the lining ring 1 of the main tunnel.
Preferably, as shown in fig. 1 to 5, a connecting piece 5 is embedded in the inner side of the lining ring 1 of the main tunnel, and the temporary portal ring beam 4 is detachably connected with the main tunnel through the connecting piece 5. In this embodiment, connecting piece 5 is buried bolt in advance, and interim portal ring beam 4 is through buried bolt in advance and the lining of main tunnel 1 releasable connection.
Preferably, as shown in fig. 1 to 4, sleeves extending axially along the communication channel opening are arranged in the main tunnel at positions corresponding to the openings, and each sleeve comprises an initiating sleeve 6 arranged on the initiating main tunnel and a receiving sleeve 7 arranged in the receiving main tunnel. The temporary portal ring beam 4 is detachably connected or welded with the corresponding sleeve. And the sleeve penetrates through the annular hole of the temporary portal annular beam 4, and the temporary portal annular beam 4 provides support for the sleeve. In this embodiment, the temporary portal ring beam 4 is connected to the sleeve by bolts.
Preferably, as shown in fig. 1 and fig. 2, the push pipe mechanism is disposed in a pre-stressed bench 11, the pre-stressed bench 11 is a portal structure, the push pipe mechanism includes a push pipe machine 8 and a jack 10 abutting against the inner side of the pre-stressed bench 11, and the sleeve is annularly embedded in a gap between the push pipe machine of the push pipe mechanism and the pre-stressed bench 11.
Embodiment 2, its difference with embodiment 1 lies in, as shown in fig. 1 and fig. 2, prestressing force rack 11 can move and set up in main tunnel, and prestressing force rack 11 is the pin-connected panel structure for prestressing force rack 11 can assemble in the working well and accomplish the back and advance to the position of contact passageway construction, solves the narrow and small problem of construction space.
Preferably, as shown in fig. 1 and 2, the pre-stressing trestle 11 is movably arranged in the main tunnel by means of telescopic rollers 12. The telescopic rollers 12 are symmetrically arranged at the lower end of the prestressed stand 11 and are positioned at two sides of the prestressed supporting mechanism at the lower end of the prestressed stand 11, so that the prestressed stand 11 can move in the main tunnel conveniently.
Preferably, as shown in fig. 1 and 2, the prestressed trestle 11 is connected with the temporary portal ring beam 4 by a telescopic support 13 at a position close to the temporary portal ring beam 4.
The construction method of the system comprises the following steps:
1. the push bench 8 is in place, the originating rack is installed, and the originating rack is moved to the originating end;
2. applying prestress through a prestress supporting mechanism on an initiating rack, supporting the interior of a main tunnel at the initiating end, jacking a temporary portal ring beam 4 to the position of a communication channel portal through the prestress supporting mechanism, and connecting the temporary portal ring beam 4 with a lining ring 1 on the main tunnel through an embedded bolt;
3. carrying out pipe jacking initial tunneling, and installing a duct piece 9 of the communication channel into the communication channel;
4. mounting a receiving rack, and moving the receiving rack to a receiving end;
5. applying prestress on a prestress supporting mechanism on a receiving rack, applying a support 14 to the interior of a main tunnel at a receiving end, jacking a temporary portal ring beam 4 to the position of a communication channel portal through the prestress supporting mechanism, and connecting the temporary portal ring beam 4 with a lining ring 1 on the main tunnel;
6. the pipe jacking machine 8 enters the receiving sleeve 7 after tunneling to complete pipe jacking receiving;
7. and (3) dismantling the starting sleeve 6 and the receiving sleeve 7, reserving the temporary portal ring beam 4, removing the starting rack and the receiving rack, and constructing a portal concrete ring beam 15.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a junctional passage push pipe construction system which characterized in that includes:
the prestress rack (11) is arranged in the main tunnel through a prestress supporting mechanism and provides support for the main tunnel, and the prestress rack (11) is used as a platform for starting or receiving pipe jacking construction and provides support for the pipe jacking mechanism;
the temporary tunnel portal ring beam (4) is installed on the prestress rack (11), a pre-supporting force is applied through the prestress rack (11) to support the tunnel portal of the main tunnel, and the temporary tunnel portal ring beam (4) is connected with a tunnel portal pipe piece of the main tunnel.
2. The pipe jacking construction system of claim 1, wherein the temporary portal ring beam (4) is detachably connected or welded with the main tunnel.
3. The pipe jacking construction system of the communication channel as claimed in claim 1 or 2, wherein a connecting piece (5) is embedded in the main tunnel, and the temporary portal ring beam (4) is detachably connected with the main tunnel through the connecting piece (5).
4. The pipe jacking construction system for the communication channel as claimed in claim 3, wherein a sleeve extending axially along the opening of the communication channel is arranged in the main tunnel, the temporary portal ring beam (4) is detachably connected or welded with the sleeve, and the temporary portal ring beam (4) provides support for the sleeve.
5. The pipe jacking construction system of claim 4, wherein the pipe jacking mechanism is arranged in the pre-stressed bench (11), and the sleeve is annularly embedded between the pipe jacking mechanism and the pre-stressed bench (11).
6. The communication channel pipe-jacking construction system according to claim 1, 2 or 4, wherein the pre-stressing trestle (11) is movably disposed in the main tunnel.
7. The pipe-jacking construction system for interconnecting channels of claim 6, wherein said pre-stressing trestle (11) is movably arranged in the main tunnel by means of telescopic rollers (12).
8. The pipe-jacking construction system of claim 1, 2, 4, 5 or 7, wherein the pre-stressing support mechanism comprises a supporting shoe (14) for supporting the inner wall of the main tunnel and a telescopic support (13) connected with the supporting shoe (14), and the supporting shoe (14) is connected with the pre-stressing platform (11) through the telescopic support (13).
9. The pipe-jacking construction system for interconnecting channels of claim 8, wherein said pre-stressing trestle (11) is connected to the temporary portal ring beam (4) by means of telescopic supports (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122975282.5U CN216342129U (en) | 2021-11-29 | 2021-11-29 | Connecting channel pipe jacking construction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122975282.5U CN216342129U (en) | 2021-11-29 | 2021-11-29 | Connecting channel pipe jacking construction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216342129U true CN216342129U (en) | 2022-04-19 |
Family
ID=81155148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122975282.5U Active CN216342129U (en) | 2021-11-29 | 2021-11-29 | Connecting channel pipe jacking construction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216342129U (en) |
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2021
- 2021-11-29 CN CN202122975282.5U patent/CN216342129U/en active Active
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