CN113027479B - Originating steel platform for jacking pipe method overlapping tunnel and construction method thereof - Google Patents
Originating steel platform for jacking pipe method overlapping tunnel and construction method thereof Download PDFInfo
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- CN113027479B CN113027479B CN202110409755.7A CN202110409755A CN113027479B CN 113027479 B CN113027479 B CN 113027479B CN 202110409755 A CN202110409755 A CN 202110409755A CN 113027479 B CN113027479 B CN 113027479B
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 238000009412 basement excavation Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002689 soil Substances 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
- E21D9/10—Making by using boring or cutting machines
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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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses an originating steel platform for a pipe jacking method overlapping tunnel and a construction method thereof, wherein the platform comprises the following components: the supporting frame comprises a plurality of supporting frames which are arranged at intervals along the length direction of top beams at two opposite sides of a platform layer of a lower tunnel, the supporting frames are vertically arranged, two opposite ends of each supporting frame are respectively arranged on the two top beams, and diagonal braces are connected between the two adjacent supporting frames; the composite platform plate comprises a bottom plate, a top plate and grid members arranged between the bottom plate and the top plate in a cushioning mode, and the bottom plate is paved on the upper parts of the supporting frames; the counter-force back support is used for supporting the rear end of the pipe pushing jack, is poured on the upper parts of the two top beams and supports one end, far away from the receiving end of the upper tunnel, of the composite platform plate; and the bottoms of the two retaining frames are respectively fixedly arranged on the two top plates, the counter-force back rest is supported at the rear end of the retaining frame, and the front end of the retaining frame is connected with the enclosure structure of the platform layer of the lower tunnel. The invention solves the problems of long construction period and high engineering cost in the conventional construction of the overlapped pipe-jacking tunnel.
Description
Technical Field
The invention relates to the technical field of urban rail transit construction, in particular to an originating steel platform for a pipe jacking method overlapping tunnel and a construction method thereof.
Background
In order to reduce the remarkable adverse effect on the normal operation of urban ground traffic and the generation of structures built in the surrounding environment in the urban rail traffic construction process, a subway station adopting a hidden excavation method gradually becomes one of the main development directions of urban rail traffic construction. The pipe jacking method is a preferred construction method for underground excavation of stations in soft soil areas by virtue of the advantages of high efficiency, environmental protection, safety and the like.
The section of a subway station used as a place for passengers to take and drop, transfer and wait for the bus requires that a superposition relationship exists between a platform layer and a station hall layer, and the subway station constructed by the pipe jacking method inevitably has the construction problem of superposition pipe jacking tunnels.
For the conventional construction of the overlapped and intersected pipe-jacking tunnel, after the lower layer tunnel of the overlapped and intersected pipe-jacking tunnel is penetrated, a platform layer concrete structure connected to the receiving end of the lower layer tunnel is constructed, and after the platform layer concrete structure reaches a certain strength, a pipe jacking machine of the upper layer tunnel of the overlapped and intersected pipe-jacking tunnel is installed on the upper portion of the platform layer concrete structure so as to be used for the originating construction of the upper layer tunnel. The conventional construction of the overlapped pipe-jacking tunnel has the defects of long construction period and high engineering cost.
Disclosure of Invention
In order to overcome the defects existing in the prior art, an originating steel platform for a pipe jacking method overlapping tunnel and a construction method thereof are provided, so that the problems of long construction period and high engineering cost existing in conventional construction of the overlapping pipe jacking tunnel are solved.
To achieve the above object, there is provided an originating steel platform for a pipe jacking stacking tunnel, comprising:
the supporting frames are arranged at intervals along the length direction of top beams at two opposite sides of a platform layer of the lower tunnel, two opposite ends of each supporting frame are respectively arranged on two top beams, and diagonal braces are connected between two adjacent supporting frames;
the composite platform plate comprises a bottom plate, a top plate and grid members arranged between the bottom plate and the top plate in a cushioning mode, and the bottom plate is paved on the upper portions of the supporting frames;
the counter-force back support is used for supporting the rear end of the pipe pushing jack, is poured on the upper parts of the two top beams and supports one end, far away from the receiving end of the upper tunnel, of the composite platform plate; and
the bottoms of the two retaining frames are respectively fixedly arranged on the two top plates, the counterforce is supported against the rear end of the retaining frame, and the front end of the retaining frame is connected with the enclosure structure of the platform layer of the lower tunnel.
Further, the lower ends of the diagonal braces are connected to the lower portion of the supporting frame, and the upper ends of the diagonal braces are connected to the upper portions of the adjacent supporting frames.
Further, the upper end of the diagonal brace is arranged right below the track of the push bench.
Further, the grid member comprises a plurality of first cross beams and a plurality of second cross beams, the first cross beams are arranged along the length direction of the top beam, each first cross beam and the top beam are arranged in the same direction, the second cross beams are connected between two adjacent first cross beams, and the first cross beams are connected with the bottom plate and the top plate.
Further, the supporting frame comprises two connecting beams and two vertical columns vertically arranged on the top beam, and the connecting beams are respectively arranged between the top ends of the two vertical columns and between the bottom ends of the two vertical columns.
Further, the upper ends of the diagonal braces are connected to a connecting beam between the top ends of the two upright posts.
Further, the backstop frame includes:
the first frame body is fixedly arranged at the upper part of the top plate;
the second frame body is fixedly arranged on the upper part of the top plate and is positioned between the first frame body and the counterforce reclining;
the first inclined rod is supported between the first frame body and the second frame body, and one end of the first inclined rod, which is close to the second frame body, is obliquely downwards arranged; and
the second inclined rod is supported between the second frame body and the counter-force back, one end, close to the counter-force back, of the second inclined rod is obliquely downwards arranged, and the position, close to one end of the second frame body, of the second inclined rod corresponds to the position, close to one end of the second frame body, of the first inclined rod.
The invention provides a construction method of a pipe jacking method overlapping tunnel, which comprises the following steps:
constructing a lower tunnel;
after the lower tunnel is penetrated, constructing a platform layer of the lower tunnel;
after the construction of the top beams on the two opposite sides of the platform layer of the lower tunnel, installing the originating steel platform for the pipe jacking overlapping tunnel according to any one of claims 1 to 7 on the top beams on the two opposite sides of the platform layer of the lower tunnel;
and installing a pipe jacking machine on the upper part of the composite platform plate of the originating steel platform so as to excavate an upper tunnel.
The originating steel platform for the pipe jacking method overlapping tunnel is used for construction of a platform layer and a hall layer of a subway station by a subsurface excavation method, improves the construction speed of the subway station while guaranteeing the construction safety of the subway station, and has the characteristics of safety, environmental protection, economy, high efficiency and the like. After the platform layer top pipe tunnel of the lower layer tunnel is penetrated, the originating steel platform for the stacking tunnel of the top pipe method is initially erected for the platform layer top pipe tunnel of the upper layer tunnel, and after the construction of the originating steel platform is completed, the subsequent portal ring beam and the filling warehouse concrete pouring construction of the lower layer tunnel can be restored, and meanwhile, the construction such as the originating, the propelling, the receiving and the like of the upper layer tunnel is carried out, so that the construction period is greatly shortened, and the engineering cost is reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 is a schematic structural diagram of an originating steel platform for a pipe jacking stacking tunnel according to an embodiment of the present invention.
Fig. 2 is a top view of an originating steel platform for a push bench overlap tunnel according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a composite platform board according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a retaining frame according to an embodiment of the present invention.
Fig. 5 is a schematic view of a use state of an originating steel platform for a pipe jacking stacking tunnel according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view at A-A in fig. 5.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 6, the present invention provides an originating steel platform for a push bench stacking tunnel, comprising: a supporting frame 1, a composite platform plate 2, a counterforce reclining device 3 and a backstop frame 4.
In the present embodiment, the support frame 1 includes a plurality of support frames 11 and diagonal braces 12. Wherein the support frame 11 is vertically arranged. The plurality of supporting frames 11 are disposed at intervals along the length direction of the top beams 51 at opposite sides of the platform layer 5 of the lower tunnel 6. Opposite ends of the supporting frame 11 are respectively mounted to two top beams 51. As a preferred embodiment, the opposite ends of the supporting frame are fixedly connected to embedded parts in the top beam. Diagonal braces 12 are connected between two adjacent supporting frames 11.
The composite deck plate 2 includes a bottom plate 21, a top plate 22, and a mesh member 23. The mesh member 23 is interposed between the bottom plate 21 and the top plate 22. The bottom plate 21 is laid on top of the plurality of support frames 11.
The reaction force reclining 3 is used for supporting the rear end (the end opposite to the jacking end of the push bench) of the push bench 8. The reaction back rest 3 is poured on the upper parts of the two top beams 51 and is supported on one end of the composite platform plate 2 far away from the receiving end of the upper tunnel 7. In this embodiment, the lower tunnel and the upper tunnel are respectively disposed on two opposite sides of the platform layer 5 and are disposed in a vertically staggered manner. The upper tunnel is jacked and excavated along the jacking direction of the lower tunnel.
The number of the retaining frames 4 is two. The bottoms of the two retaining frames 4 are respectively fixed on the two top plates 22. The reaction back 3 is supported against the rear end of the retaining frame 4, and the front end of the retaining frame 4 is connected with the enclosure structure 52 of the platform layer 5 of the lower tunnel.
The originating steel platform for the pipe jacking overlapped tunnel is used for construction of underground excavation subway station platform layers and station hall layers, ensures the construction safety of the subway station, improves the construction speed of the subway station, and has the characteristics of safety, environmental protection, economy, high efficiency and the like. After the platform layer top pipe tunnel of the lower layer tunnel is penetrated, the originating steel platform for the stacking tunnel of the top pipe method is initially erected for the platform layer top pipe tunnel of the upper layer tunnel, and after the construction of the originating steel platform is completed, the subsequent portal ring beam and the filling warehouse concrete pouring construction of the lower layer tunnel can be restored, and meanwhile, the construction such as the originating, the propelling, the receiving and the like of the upper layer tunnel is carried out, so that the construction period is greatly shortened, and the engineering cost is reduced.
In the present embodiment, the lower end of the diagonal brace 12 is connected to the lower portion of the support frame 11. The upper ends of the diagonal braces 12 are connected to the upper portions of the adjacent support frames 11.
Specifically, the support frame 11 includes two connection beams and two columns. Wherein the upright posts are vertically arranged on the top beam 51. The two vertical posts are respectively and vertically arranged on the two top beams. Connecting beams are respectively arranged between the top ends of the two upright posts and between the bottom ends of the two upright posts. The upper ends of the diagonal braces 12 are connected to the connecting beams between the top ends of the two uprights.
In the present embodiment, the upper end of the diagonal brace 12 is disposed directly below the track of the push bench 8. The lower extreme of bracing is connected in the junction of stand and tie beam of the bottom of stand.
In the present embodiment, the mesh member 23 includes a plurality of first and second beams. The first beam and the second beam are respectively formed steel, such as channel steel, H-shaped steel and the like. The plurality of first cross members are disposed along the length of the top beam 51. Each first cross member is disposed in a common direction with the top beam 51. The second cross beam is connected between two adjacent first cross beams. The first beam is connected to a bottom plate 21 and a top plate 22.
As a preferred embodiment, the backstop 4 includes: the first frame 41, the second frame 42, the first diagonal rods 43 and the second diagonal rods 44.
The first frame 41 and the second frame 42 are respectively fixed on the upper portion of the top plate 22. The second frame 42 is located between the first frame 41 and the reaction force reclining 3. In this embodiment, the height of the first frame is greater than the height of the second frame. The first inclined rod and the second inclined rod are respectively and obliquely arranged, and the inclination of the first inclined rod is larger than that of the second inclined rod.
The first diagonal rod 43 is supported between the first frame 41 and the second frame 42, and one end of the first diagonal rod 43, which is close to the second frame 42, is disposed obliquely downward. The second diagonal lever 44 is supported between the second frame 42 and the reaction reclining 3. One end of the second diagonal member 44, which is close to the reaction force reclining mechanism 3, is disposed obliquely downward. The position of the end of the second diagonal lever 44 near the second frame 42 corresponds to the position of the end of the first diagonal lever 43 near the second frame 42.
The invention provides a construction method of a pipe jacking method overlapping tunnel, which comprises the following steps:
s1: the lower tunnel 6 is constructed.
S2: after the lower tunnel 6 is penetrated, the platform layer 5 of the lower tunnel 6 is constructed.
The platform layer of the lower tunnel comprises an enclosure structure and a main body structure cast on the inner side of the enclosure structure. The main structure comprises a platform layer bottom plate and a side plate cast on the upper part of the platform layer bottom plate, wherein a top beam is cast on the top of the side plate.
In this embodiment, the main structure of the platform layer of the lower tunnel has two layers. The lower tunnel is aligned to the lower layer of the main structure, and the upper tunnel is positioned above the upper layer of the main structure of the platform layer of the lower tunnel.
S3: after the top beams 51 on the opposite sides of the platform layer 5 of the lower tunnel 6 are constructed, an originating steel platform for a pipe jacking overlapping tunnel is installed on the top beams 51 on the opposite sides of the platform layer 5 of the lower tunnel 6.
After the top beams 51 on the opposite sides of the platform layer 5 of the lower tunnel 6 are constructed, an originating steel platform for a pipe jacking overlapping tunnel is installed on the top beams 51 on the opposite sides of the platform layer 5 of the lower tunnel 6. In particular, the support frame is mounted on top of the roof beams of the opposite two floors of the platform floor 5. A composite platform plate 2 is arranged on the top of the supporting frame. And a counterforce backing 3 is formed at the rear end of the composite platform plate 2 in a pouring way, and a retaining frame 4 is arranged at the upper part of the composite platform plate, so that the bottoms of the two retaining frames are respectively fixedly arranged on the top plates of the two composite platform plates, the counterforce backing is supported on the rear end of the retaining frame, and the front end of the retaining frame is connected with the enclosure structure of the platform layer of the lower tunnel.
S4: a push bench 8 is installed at the upper part of the composite platform plate 2 of the originating steel platform to excavate the upper tunnel 7.
After the initial steel platform is installed, a push bench 8 is installed at the upper portion of the composite platform plate 2 of the initial steel platform to continue to excavate the upper tunnel 7 forward.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. An originating steel platform for a pipe jacking stacking tunnel, comprising:
the supporting frames are arranged at intervals along the length direction of top beams at two opposite sides of a platform layer of the lower tunnel, two opposite ends of each supporting frame are respectively arranged on two top beams, and diagonal braces are connected between two adjacent supporting frames;
the composite platform plate comprises a bottom plate, a top plate and grid members arranged between the bottom plate and the top plate in a cushioning mode, and the bottom plate is paved on the upper portions of the supporting frames;
the counter-force back support is used for supporting the rear end of the pipe pushing jack, is poured on the upper parts of the two top beams and supports one end, far away from the receiving end of the upper tunnel, of the composite platform plate; and
the bottoms of the two retaining frames are respectively fixedly arranged on the two top plates, the counterforce is supported against the rear ends of the retaining frames, and the front ends of the retaining frames are connected with the enclosure structure of the platform layer of the lower tunnel;
the backstop frame includes:
the first frame body is fixedly arranged at the upper part of the top plate;
the second frame body is fixedly arranged on the upper part of the top plate and is positioned between the first frame body and the counterforce reclining;
the first inclined rod is supported between the first frame body and the second frame body, and one end of the first inclined rod, which is close to the second frame body, is obliquely downwards arranged; and
the second inclined rod is supported between the second frame body and the counter-force back, one end, close to the counter-force back, of the second inclined rod is obliquely downwards arranged, and the position, close to one end of the second frame body, of the second inclined rod corresponds to the position, close to one end of the second frame body, of the first inclined rod.
2. The originating steel platform for a push bench stack tunnel according to claim 1, wherein the lower ends of the diagonal braces are connected to the lower portion of the support frame and the upper ends of the diagonal braces are connected to the upper portion of the adjacent support frame.
3. The originating steel platform for a push bench stacking tunnel according to claim 2, wherein the upper end of the diagonal brace is disposed directly under the track of the push bench.
4. The originating steel platform for a push bench stack tunnel of claim 1, wherein said grid member comprises a plurality of first beams and a second beam, said plurality of first beams being disposed along a length of said top beam, each of said first beams being disposed in a common direction with said top beam, said second beam being connected between adjacent ones of said first beams, said first beams being connected to said bottom and top plates.
5. The originating steel platform for a pipe jacking overlapping tunnel as claimed in claim 1, wherein the supporting frame comprises two connecting beams and two vertical posts vertically arranged on the top beam, and the connecting beams are respectively arranged between the top ends of the two vertical posts and between the bottom ends of the two vertical posts.
6. The originating steel platform for a push bench stacking tunnel of claim 5 wherein the upper ends of the diagonal braces are connected to a connecting beam between the top ends of two of the uprights.
7. The construction method of the pipe jacking method overlapping tunnel is characterized by comprising the following steps of:
constructing a lower tunnel;
after the lower tunnel is penetrated, constructing a platform layer of the lower tunnel;
after the construction of the top beams on the two opposite sides of the platform layer of the lower tunnel, installing the originating steel platform for the pipe jacking overlapping tunnel according to any one of claims 1 to 6 on the top beams on the two opposite sides of the platform layer of the lower tunnel;
and installing a pipe jacking machine on the upper part of the composite platform plate of the originating steel platform so as to excavate an upper tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110409755.7A CN113027479B (en) | 2021-04-16 | 2021-04-16 | Originating steel platform for jacking pipe method overlapping tunnel and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110409755.7A CN113027479B (en) | 2021-04-16 | 2021-04-16 | Originating steel platform for jacking pipe method overlapping tunnel and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN113027479A CN113027479A (en) | 2021-06-25 |
| CN113027479B true CN113027479B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110409755.7A Active CN113027479B (en) | 2021-04-16 | 2021-04-16 | Originating steel platform for jacking pipe method overlapping tunnel and construction method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530557A (en) * | 2021-08-09 | 2021-10-22 | 中建一局集团建设发展有限公司 | Subway transfer passage structure without receiving well and construction method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2699105B2 (en) * | 1989-04-28 | 1998-01-19 | 株式会社イセキ開発工機 | Middle pushing device for underground propulsion of pipes |
| JP3156195B2 (en) * | 1994-09-09 | 2001-04-16 | 大成建設株式会社 | Parent-child tunnel excavator and its excavation method |
| CN204920963U (en) * | 2015-09-02 | 2015-12-30 | 中铁四局集团有限公司 | Rectangular jacking pipe retaining structure |
| CN107091105B (en) * | 2017-05-25 | 2019-05-10 | 上海隧道工程有限公司 | The aerial steel platform and its construction method continuously constructed for realizing interchange tunnels |
| CN211666743U (en) * | 2020-01-08 | 2020-10-13 | 中铁十一局集团有限公司 | Pipe joint retaining frame for rectangular jacking pipe in subway station access construction |
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2021
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