CN215213518U - Tunnel structure of underground structure uplift pile is worn down - Google Patents
Tunnel structure of underground structure uplift pile is worn down Download PDFInfo
- Publication number
- CN215213518U CN215213518U CN202120914204.1U CN202120914204U CN215213518U CN 215213518 U CN215213518 U CN 215213518U CN 202120914204 U CN202120914204 U CN 202120914204U CN 215213518 U CN215213518 U CN 215213518U
- Authority
- CN
- China
- Prior art keywords
- uplift pile
- tunnel
- subway station
- uplift
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a tunnel structure of wearing underground structure uplift pile down. The existing subway station is penetrated through the lower part of the subway station and the uplift pile is penetrated through the lower part of the subway station; the uplift piles are separated and cut off through the tunnel structure of the uplift pile of the underpass underground structure; the fender post is arranged on the periphery of the existing subway station; the uplift pile is arranged in the existing subway station; the tunnel structure of the uplift pile with the underground structure comprises a primary support, a secondary lining and a steel bar lap joint structure; the steel bar lapping structure is arranged at the joint of the cut uplift pile and the primary support; the concrete structure is arranged at the position of the steel bar lap joint structure; the secondary lining is arranged on the inner wall of the primary support. The utility model has the advantages of can wear existing subway station down smoothly to ensure not to influence the anti superficial of existing subway station.
Description
Technical Field
The utility model relates to a tunnel engineering field, the more specifically tunnel structure who says so it is a wear underground structure uplift pile down.
Background
With the rapid development of the construction of rail transit projects of various cities, the wire mesh planning is continuously updated, so that the project construction conditions of later-stage lines are not reserved in the early-stage construction process of part of stations, and the construction scheme of a newly-built project is directly restricted.
For solving the vertical anti problem of floating of station, the station adopts the pile foundation as structural measure more, when the stress condition of pile foundation changes, probably influences the anti floating of station.
The line construction control factors of the rail transit are influenced by the surrounding environment, and the selectable line schemes are few, so that when a newly-built tunnel project is selected, the conditions of fender piles and uplift piles can be met in the tunnel construction range, and therefore the tunnel construction scheme needs to be mainly considered on the premise of ensuring the structural safety of an existing station, and how to safely construct the tunnel.
In order to break fender piles and uplift piles in the tunnel construction range, newly-built tunnels are usually excavated by a mine method, reinforcement is needed to be carried out in due time according to the stratum condition before excavation, and when the stratum condition is better, excavation can be directly carried out.
The uplift pile of the existing station has a structure stress system which is greatly changed due to the construction of a newly-built tunnel project, so that the anti-floating of the existing station is directly influenced.
In order to solve the problem of structural anti-floating of the existing station, measures such as adding anti-pulling piles, anti-pulling anchor rods and ballast weights on the ground can be adopted, but the measures have great influence on the existing station, the ground construction can cause adverse effects on traffic fluffing, pipeline operation and the like around the existing station, and the construction difficulty is great.
Therefore, it is necessary to develop a tunnel structure that solves the anti-floating problem of the existing station structure and does not affect the existing station traffic and pipeline operation.
Disclosure of Invention
The utility model aims at providing a tunnel structure of wearing underground structure uplift pile down can wear existing subway station down smoothly to ensure not to influence the anti floating of existing subway station, and do not influence existing station traffic and pipeline operation.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a tunnel structure of wearing underground structure uplift pile down which characterized in that: the tunnel structure of the uplift pile with the underground structure is penetrated through an existing subway station and penetrates through the uplift pile; the uplift piles are separated and cut off through the tunnel structure of the uplift pile of the underpass underground structure; the fender post is arranged on the periphery of the existing subway station; the uplift pile is arranged in the existing subway station;
the tunnel structure of the uplift pile with the underground structure comprises a primary support, a secondary lining and a steel bar lap joint structure;
the steel bar lapping structure is arranged at the joint of the cut uplift pile and the primary support;
the concrete structure is arranged at the position of the steel bar lap joint structure;
the secondary lining is arranged on the inner wall of the primary support.
In the technical scheme, the uplift pile main reinforcement is arranged in the uplift pile; and the uplift pile main reinforcement is separated and cut off through the tunnel structure penetrating the uplift pile of the underground structure downwards.
In the technical scheme, the primary support is provided with the steel arch frame.
In the technical scheme, the steel bar lapping structure comprises a main steel bar of the cut uplift pile and a steel arch frame; the cut main reinforcement of the uplift pile is welded with the steel arch frame;
and the concrete structure is arranged at the joint of the cut main reinforcement of the uplift pile and the steel arch frame.
The utility model has the advantages of as follows:
the utility model is suitable for a run the uplift pile of existing subway station under the mine method tunnel, connect the preliminary bracing of mine method tunnel with the uplift pile after cutting off to the tunnel is run the existing subway station smoothly, and ensure not to influence the anti-floating of existing subway station; the utility model discloses can be applicable to and wear other underground construction resistance to plucking stake or interim stand stake under the tunnel.
Drawings
Fig. 1 is the utility model provides a new tunnel wears existing station plan down.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
Fig. 4 is a cross-sectional view taken along line C-C of fig. 1.
Fig. 5 is a section view of a newly-built tunnel underpass uplift pile.
Fig. 6 is a section view of the new tunnel and uplift pile connection of the present invention.
Fig. 7 is a side view of fig. 6.
In the figure, 1-an existing subway station, 2-fender piles, 3-uplift piles, 4-a tunnel structure of an uplift pile with an underground structure, 4-1 primary support, 4-2 secondary lining, 5-a steel-reinforced arch frame, 6-main reinforcements of the uplift pile and 7-a steel bar lapping structure are adopted.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be clear and readily appreciated by the description.
The utility model is suitable for a newly-built tunnel wears existing subway station down; when the uplift pile is encountered in the tunnel construction range, the mine method is adopted for excavation, the uplift pile is broken, the primary support section steel arch frame of the mine method tunnel and the cut main rib of the uplift pile are welded, after concrete is sprayed, the uplift pile and the primary support form a complete stress system, after the tunnel is subjected to secondary lining, the tunnel structure which penetrates the uplift pile of the underground structure can smoothly penetrate through the existing subway station, and the anti-floating of the existing subway station is not influenced.
With reference to the accompanying drawings: the tunnel structure is penetrated through an underground structure uplift pile, and an existing subway station 1 is penetrated through the underground structure uplift pile 3; the uplift pile 3 is separated and cut off through the tunnel structure 4 (namely a newly-built tunnel) of the uplift pile with the underground structure; the fender post 2 is arranged on the periphery of the existing subway station 1; the uplift pile 3 is arranged in the existing subway station 1;
the tunnel structure 4 of the uplift pile with the underground structure comprises a primary support 4-1, a secondary lining 4-2 and a steel bar lap joint structure 7;
the steel bar lapping structure 7 is arranged at the joint of the cut uplift pile 3 and the primary support 4-1;
the concrete structure is arranged at the position of the steel bar lapping structure 7;
the secondary lining 4-2 is arranged on the inner wall of the primary support 4-1.
Further, a main uplift pile rib 6 is arranged in the uplift pile 3; and the uplift pile main reinforcement 6 is separated and cut off through the tunnel structure 4 penetrating the uplift pile of the underground structure.
Furthermore, a steel section steel arch frame 5 is arranged on the primary support 4-1.
Furthermore, the steel bar lapping structure 7 comprises a cut-off uplift pile main bar 6 and a section steel arch frame 5; the cut uplift pile main reinforcement 6 is welded with the profile steel arch frame 5;
the concrete structure is arranged at the joint of the cut uplift pile main reinforcement 6 and the section steel arch frame 5.
Wear underground structure uplift pile's tunnel structure's construction method down, including following step:
the method comprises the following steps: excavating a standard section tunnel;
the standard section tunnel excavation specifically comprises the following steps,
s11: constructing an advance support;
s12: excavating an upper half section;
s13: spraying concrete for the first time;
s14: constructing a profile steel arch frame 5 with an upper half section;
s15: excavating a lower half section;
s16: constructing a profile steel arch frame 5 with a lower half section;
s17: the steel arch 5 with the closed upper half section and the steel arch 5 with the closed lower half section form a ring to form a primary support 4-1;
s18: grouting the back of the primary support 4-1 to reinforce the soil body outside the primary support 4-1;
step two: excavating tunnels of sections near the uplift piles;
the excavation of the tunnel of the section near the uplift pile specifically comprises the following steps,
s21: chiseling out the main uplift pile reinforcement 6 of the uplift pile 3;
s22: according to the actual position of a pile body of the field uplift pile, sequentially excavating an upper half section and a lower half section, and arranging profile steel arch frames 5 of primary supports 4-1 on two sides of the adjacent uplift pile;
s23: the concrete of the pile body of the uplift pile 3 is broken through statically, the section steel arch frame 5 is densely distributed in the range of the pile body of the uplift pile 3 and is welded with the main reinforcement 6 of the uplift pile 3;
s24: spraying concrete, and sealing the primary support 4-1;
step three: after the primary support 4-1 reaches the design strength and deforms stably, pouring a secondary lining 4-2 to complete the construction of the tunnel structure of the uplift pile of the underpass underground structure;
the utility model provides a tunnel excavation adopts the mine method and in time erects preliminary bracing, and secondary lining can adopt cast in situ concrete or shield structure empty to push back assembles the section of jurisdiction of cyclization, guarantees the stability of structure.
Further, early strength shotcrete is adopted for the primary support 4-1, the thickness is 300mm, the strength of the concrete is C35, and the impermeability grade is P10; the concrete sprayed in the steps S13, S24 and S25 is early strength concrete;
and constructing a small advanced guide pipe on the tunnel face in advance and grouting before tunnel excavation.
Further, the secondary lining 4-2 is made of molded reinforced concrete, the thickness of the secondary lining is 350mm, the strength of the concrete is C35, and the impermeability grade is P12.
Further, the section steel arch center 5 adopts I-shaped steel I22 b; the steel arch frames 5 are connected by adopting angle steel and steel plates, and the types of the steel are Q235b grade steel;
in order to improve the convenience of site construction, the steel arch frame 5 is formed by splicing in blocks, and the splicing mode adopts bolt connection.
Further, after the uplift pile 3 is excavated and a complete structure is exposed, concrete of the uplift pile 3 is chiseled by a small machine such as an air pick, connecting uplift pile main ribs 6 (the reserved length of the connecting uplift pile main rib 6 is greater than or equal to 37d and greater than or equal to 200mm, and d is the diameter of a steel bar) within a to-be-connected range are reserved at the upper end and the lower end of the uplift pile 3 respectively, and the rest of the uplift pile main ribs 6 are cut off;
after the uplift pile 3 is broken, 3-5 trusses of the section steel arch 5 are densely distributed near the uplift pile 3, and the specific number is determined according to the diameter size of the uplift pile.
Further, the steel bar welding at the welding position of the steel arch frame 5 and the main rib 6 of the uplift pile adopts arc welding, when the steel arch frame 5 and the main rib 6 of the uplift pile adopt A3 steel and Q235 steel bars, an E43 type welding rod is adopted, and when HPB400 steel bars are welded, an E50 welding rod is adopted; the chemical components and mechanical properties of the welding molten metal meet the requirements of relevant specifications, and the welding of the reinforcing steel bars must be carried out according to construction conditions before welding.
Furthermore, the main reinforcement of the secondary lining 4-2 is preferably mechanically connected, the joint positions of the main reinforcement of the secondary lining 4-2 are arranged at the positions with smaller stress, and the joint positions are staggered with each other;
the joint number of the longitudinal tension reinforcing steel bars of the secondary lining 4-2 is less than or equal to 50% of the number of the reinforcing steel bars within the range of 35d and greater than or equal to 500mm, and the joint area of the longitudinal compression reinforcing steel bars can be unlimited.
The excavation and the pouring of the secondary lining of the standard section of the tunnel are both in the prior art.
In order to illustrate more clearly the tunnel structure of wearing underground structure uplift pile compare the advantage that has with prior art down, the staff contrasts these two kinds of technical scheme, its contrast result is as follows:
can know by last table, tunnel structure of wearing underground structure uplift pile down compare with prior art, ensure not to influence the anti superficial of existing subway station, and the tunnel can wear existing subway station down smoothly, the construction degree of difficulty is less.
Other parts not described belong to the prior art.
Claims (4)
1. Wear tunnel structure of underground structure uplift pile down, its characterized in that: the tunnel structure (4) which penetrates through the underground structure uplift pile downwards penetrates through the existing subway station (1) and penetrates through the uplift pile (3); the uplift pile (3) is separated and cut off through the tunnel structure (4) of the uplift pile of the underground structure; the fender post (2) is arranged on the periphery of the existing subway station (1); the uplift pile (3) is arranged in the existing subway station (1);
the tunnel structure (4) of the uplift pile with the underground structure comprises a primary support (4-1), a secondary lining (4-2) and a steel bar lap joint structure (7);
the steel bar lap joint structure (7) is arranged at the joint of the cut uplift pile (3) and the primary support (4-1);
the concrete structure is arranged at the position of the steel bar lapping structure (7);
the secondary lining (4-2) is arranged on the inner wall of the primary support (4-1).
2. The tunnel structure of the underpass underground structure uplift pile according to claim 1, wherein: the uplift pile main reinforcement (6) is arranged in the uplift pile (3); and the uplift pile main reinforcement (6) is separated and cut off through the tunnel structure (4) which penetrates through the uplift pile of the underground structure.
3. The tunnel structure of the underpass underground structure uplift pile according to claim 2, wherein: the primary support (4-1) is provided with a steel arch frame (5).
4. The tunnel structure of the underpass underground structure uplift pile according to claim 3, wherein: the steel bar lapping structure (7) comprises a main steel bar (6) of the cut uplift pile and a section steel arch frame (5); the cut uplift pile main reinforcement (6) is welded with the section steel arch frame (5);
the concrete structure is arranged at the joint of the cut main reinforcement (6) of the uplift pile and the steel arch frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120914204.1U CN215213518U (en) | 2021-04-29 | 2021-04-29 | Tunnel structure of underground structure uplift pile is worn down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120914204.1U CN215213518U (en) | 2021-04-29 | 2021-04-29 | Tunnel structure of underground structure uplift pile is worn down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213518U true CN215213518U (en) | 2021-12-17 |
Family
ID=79447763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120914204.1U Active CN215213518U (en) | 2021-04-29 | 2021-04-29 | Tunnel structure of underground structure uplift pile is worn down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213518U (en) |
-
2021
- 2021-04-29 CN CN202120914204.1U patent/CN215213518U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101614125B (en) | Construction method of V-level surrounding rock tunnel | |
| CN106968139B (en) | The construction method of railway bed supporting in undercrossing tunnel jacking framed bridge jack-in process | |
| CN105862930B (en) | A kind of protection structure to creating existing tunnel below underground engineering | |
| CN103628885A (en) | Tunnel exit cover-excavation construction method of Ultra-shadow buried tunnel | |
| CN102587924A (en) | Construction method for shallow-buried high-water-content clayed soil tunnel | |
| CN108842819A (en) | A kind of urban track traffic cable run method for tunnel construction | |
| CN108678751B (en) | Assembly type construction method of shield cutter head manhole by jacking and excavating firstly | |
| CN112031814B (en) | Cave-entering construction method for crossing shallow-layer high-load highway | |
| CN110424376A (en) | I-shaped GFRP-i shaped steel joint structure and splicing cage and its construction method for diaphram wall | |
| CN102817621B (en) | Comprehensive construction method applicable to controlling arch basement sedimentation for tunnel in unfavorable geological conditions | |
| CN113062750A (en) | Construction method of tunnel structure with underground structure uplift pile penetrating downwards | |
| CN208702421U (en) | The tunnel support structure of existing pile foundation building is worn under a kind of | |
| CN113738399A (en) | Underground excavation tunnel large pipe shed guide wall structure and construction method thereof | |
| CN105840209B (en) | Construction method for controlling deformation of anchor pile in tunnel body section | |
| CN111764926A (en) | Control structure and control method for long-term settlement of shield or pipe-jacking tunnel | |
| CN112145203A (en) | Full-face advancing type sectional grouting construction method and overlapped tunnel construction method | |
| CN215213518U (en) | Tunnel structure of underground structure uplift pile is worn down | |
| CN209261598U (en) | A kind of reinforcement ledge structure suitable for big cross section bored tunnel | |
| CN116398165A (en) | New tunnel penetrating through existing station at zero distance and construction method thereof | |
| CN114673527B (en) | Progressive roadway and tunnel broken surrounding rock reinforcing method | |
| CN207513604U (en) | A kind of novel prefabricated assembled pipe canopy of soft soil tunnel pre-reinforcement | |
| CN209687506U (en) | Wear river shallow buried covered excavation electric power tunnel constructing structure | |
| CN209704560U (en) | Build the scaffolding structure that an ultra shallow buries Large Underground space | |
| CN110318419B (en) | Construction method of one-lining door opening support of underpass type pipe gallery | |
| CN210370668U (en) | Earth surface reinforcing structure for extending tunnel below existing highway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |