CN209873811U - Subway major structure medium plate also serves as temporary supporting structure - Google Patents
Subway major structure medium plate also serves as temporary supporting structure Download PDFInfo
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- CN209873811U CN209873811U CN201822270591.0U CN201822270591U CN209873811U CN 209873811 U CN209873811 U CN 209873811U CN 201822270591 U CN201822270591 U CN 201822270591U CN 209873811 U CN209873811 U CN 209873811U
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Abstract
The utility model belongs to the technical field of the subway engineering construction, specifically be a hold temporary support structure with subway major structure medium plate concurrently. The utility model comprises a middle plate, a continuous wall, side walls and lattice columns, wherein both ends of the middle plate are connected with the continuous wall through the reserved steel bars of the continuous wall and the oblique lacing wires of the middle plate; the middle part of the middle plate is supported by a horizontal tray and a supporting tray batten plate welded on the lattice column; a small section of the side wall is arranged above and below the joint of the middle plate and the continuous wall; reserving a transverse grouting pipe on the side wall close to the continuous wall; and a reserved vertical grouting pipe is connected with the transverse grouting pipe. The utility model discloses the one side can reduce one and support to twice concrete, shortens construction period greatly, saves the investment, and on the other hand, medium plate structure rigidity is big, and is favorable to foundation ditch retaining structure safety, can effectively improve foundation ditch overall stability, reduces foundation ditch construction risk.
Description
Technical Field
The utility model belongs to the technical field of the subway engineering construction, specifically a subway major structure medium plate double as interim bearing structure.
Background
The conventional subway foundation pit construction is that a building enclosure structure (a continuous wall or a cast-in-place pile and the like) is firstly constructed, then supports of all the ways are gradually excavated and constructed, a station bottom plate is poured after the supports are excavated to the bottom of a foundation pit, then an upper support is dismantled, a side wall and a middle plate are poured, and a main structure is gradually poured upwards. The temporary support in the subway foundation pit construction is large in investment, but the service cycle is short, and the temporary support can be removed after being used for several months, so that a large amount of manpower and material resources are consumed for pouring and removing, a large amount of construction period is consumed for waiting for the concrete setting period and chiseling and removing, and the environment is also adversely affected by treating the construction waste.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a subway major structure medium plate is as interim bearing structure concurrently, is under construction with the major structure medium plate earlier in the subway engineering construction, does interim support with the major structure medium plate concurrently.
The utility model relates to a subway main structure medium plate which is used as a temporary supporting structure, comprising a medium plate, a continuous wall, a side wall and a lattice column; two ends of the middle plate are connected with the continuous wall through reserved steel bars of the continuous wall and the middle plate inclined lacing bars; the middle part of the middle plate is supported by a horizontal tray and a supporting tray batten plate welded on the lattice column; a small section of the side wall is arranged above and below the joint of the middle plate and the continuous wall; reserving a transverse grouting pipe on the side wall close to the continuous wall; and a reserved vertical grouting pipe is connected with the transverse grouting pipe.
Furthermore, the reserved steel bars of the continuous wall are reserved steel bars of the continuous wall; and the middle plate oblique lacing wire is welded with the main rib of the continuous wall.
Furthermore, the height of the horizontal tray is equal to the height of the bottom surface of the middle plate.
Furthermore, the reserved surface at the lower end of the side wall is an inclined surface facing the foundation pit.
Furthermore, main body side wall steel bars, a steel bar connector and a water stop steel plate are reserved in the side walls.
Furthermore, the vertical grouting pipes are connected with the transverse grouting pipes every 3 m.
Station major structure medium plate rigidity is big, and the position is close with the supported position, the utility model discloses a change the work procedure, be under construction earlier with the station major structure medium plate, it is big to utilize station medium plate rigidity, and the suitable characteristics in position replace the second with the medium plate and say or support with the third. One can reduce one like this and support to the twice, shorten construction period greatly and save the investment, on the other hand, medium plate rigidity is big, can effectively improve foundation ditch overall stability, reduces foundation ditch construction risk.
The utility model discloses follow decrement (Reduce) principle in resource recycling economy's 3R principle, realized that concrete support decrement uses among the interim envelope, had following advantage: firstly, the pouring and dismantling cost of the temporary structure is reduced, the discharge of construction waste is reduced, and the environmental pollution is reduced; secondly, concrete support pouring, a waiting setting period and a concrete dismantling period are saved, and the construction period can be effectively saved; and the medium plate structure has high rigidity, is safe and beneficial to the foundation pit support structure, and can effectively reduce the foundation pit excavation risk. The utility model has the advantages of easy operation, can bring better economic benefits and social.
Drawings
Fig. 1 is a schematic cross-sectional view of a conventional foundation pit support.
Fig. 2 is a schematic view of a main structure of a subway station.
Figure 3 is the utility model discloses a excavation supporting section schematic diagram.
Fig. 4 is a schematic view of the connection between the middle plate and the continuous wall.
Fig. 5 is a schematic diagram of a middle plate and a lattice column node.
Fig. 6 is a schematic diagram of a lattice column pallet node.
Wherein: 1. the concrete wall comprises a middle plate, 2 continuous walls, 3 concrete supports, 4 reinforcing steel bar connectors, 5 main body side wall reinforcing steel bars, 6 side walls, 7 water stop steel plates, 8 vertical grouting pipes, 9 transverse grouting pipes, 10 continuous wall reserved reinforcing steel bars, 11 middle plate inclined lacing bars, 12 latticed columns, 13 support tray batten plates, 14 horizontal trays, 15 bottom plates and 16 top plates.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1-2, in the conventional subway foundation pit construction, a building enclosure structure such as a continuous wall 2 is firstly constructed, then concrete supports 3 are gradually excavated and constructed, a station bottom plate 15 is poured after the concrete supports 3 are excavated to the bottom of the foundation pit, then the upper concrete supports 3 are removed, side walls 6 and a middle plate 1 are poured, and a main structure is gradually poured upwards.
As shown in fig. 3, the utility model discloses a subway major structure medium plate doubles as interim bearing structure is through changing the work progress, with station major structure medium plate 1 first construction, utilizes 1 rigidity of station medium plate big, the suitable characteristics in position, replaces the second with medium plate 1 or supports 3 with third concrete.
As shown in fig. 2 to 6, the middle plate of the subway main structure also serves as a temporary support structure, and comprises a middle plate 1, a continuous wall 2, side walls 6 and lattice columns 12; two ends of the middle plate 1 are connected with the continuous wall 2 through reserved continuous wall steel bars 10 and middle plate oblique lacing wires 11; the middle part of the middle plate 1 is supported by a horizontal tray 14 and a support tray batten plate 13 which are welded on the lattice column 12; a small section of the side wall 6 is arranged above and below the joint of the middle plate 1 and the continuous wall 2; a transverse grouting pipe 9 is reserved on the side, close to the continuous wall 2, of the side wall 6; reserved vertical grouting pipes 8 are connected with the horizontal grouting pipes 9 every 3 m.
The reserved steel bars 10 of the continuous wall are reserved steel bars of the continuous wall 2; the middle plate inclined lacing wire 11 is welded with the main rib of the continuous wall 2.
The height of the horizontal tray 14 is equal to the height of the bottom surface of the middle plate 1.
The upper reserved surface and the lower reserved surface of the side wall 6 both need to be roughened, and the lower reserved surface is an inclined surface towards the foundation pit. The side wall 6 needs to reserve the main body side wall steel bars 5 and the steel bar connector 4 according to design requirements, and needs to pre-embed a water stop steel plate 7 in the side wall 6.
The utility model discloses to construct earlier the major structure medium plate of back construction originally, replace the concrete support in the excavation supporting system originally, through certain constructional measures, solve medium plate structure load, side wall concreting and the waterproof scheduling problem of construction joint that medium plate structure construction earlier arouses, embody as follows specifically:
(1) when a temporary enclosure structure (a continuous wall or an enclosure pile) is constructed, a continuous wall reserved steel bar 10 is required to be reserved and used as a connecting steel bar of the main structure middle plate 1 to bear the structural load of the middle plate 1;
(2) besides the supporting function of the connecting part of the two ends of the middle plate 1 and the enclosure structure, the lattice column 12 in the existing foundation pit or the newly arranged upright column is generally used for supporting the structural load of the middle plate 1;
(3) constructing a small section of side wall 6 above and below the middle plate 1 at the joint of the middle plate 1 and the continuous wall 2 respectively, and adopting special structural measures to ensure the later-stage dense concrete pouring and convenient construction of the side wall and ensure the construction quality of a main structure;
(4) grouting construction measures need to be reserved at the joints of the side walls 6 so as to ensure effective water resistance of later construction joints.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (6)
1. Subway major structure medium plate doubles as interim bearing structure, including medium plate (1), continuous wall (2), side wall (6), lattice column (12), its characterized in that: two ends of the middle plate (1) are connected with the continuous wall (2) through reserved continuous wall steel bars (10) and middle plate oblique lacing wires (11); the middle part of the middle plate (1) is supported by a horizontal tray (14) and a supporting tray batten plate (13) which are welded on the lattice column (12); a small section of the side wall (6) is arranged above and below the joint of the middle plate (1) and the continuous wall (2); a transverse grouting pipe (9) is reserved on the side, close to the continuous wall (2), of the side wall (6); a reserved vertical grouting pipe (8) is connected with a transverse grouting pipe (9).
2. The slab doubling as a temporary support structure in a subway main body structure as claimed in claim 1, wherein: the reserved steel bars (10) of the continuous wall are reserved steel bars of the continuous wall (2); the middle plate inclined lacing wire (11) is welded with the main rib of the continuous wall (2).
3. The slab doubling as a temporary support structure in a subway main body structure as claimed in claim 1 or 2, wherein: the height of the horizontal tray (14) is equal to the height of the bottom surface of the middle plate (1).
4. The slab doubling as a temporary support structure in a subway main body structure as claimed in claim 2, wherein: the reserved surface at the lower end of the side wall (6) is an inclined surface facing the foundation pit.
5. The slab doubling as a temporary support structure in a subway main body structure as claimed in claim 4, wherein: and main side wall steel bars (5), a steel bar connector (4) and a water stop steel plate (7) are reserved in the side wall (6).
6. The slab doubling as a temporary support structure in a subway main body structure as claimed in claim 5, wherein: the vertical grouting pipes (8) are connected with the transverse grouting pipes (9) every 3 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270591.0U CN209873811U (en) | 2018-12-29 | 2018-12-29 | Subway major structure medium plate also serves as temporary supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270591.0U CN209873811U (en) | 2018-12-29 | 2018-12-29 | Subway major structure medium plate also serves as temporary supporting structure |
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| Publication Number | Publication Date |
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| CN209873811U true CN209873811U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822270591.0U Active CN209873811U (en) | 2018-12-29 | 2018-12-29 | Subway major structure medium plate also serves as temporary supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555130A (en) * | 2018-12-29 | 2019-04-02 | 长江勘测规划设计研究有限责任公司 | Plate doubles as temporary support structure and construction method in subway main body structure |
| CN113463639A (en) * | 2021-07-07 | 2021-10-01 | 南京东土建设科技有限公司 | Underground continuous wall distributed grouting system |
-
2018
- 2018-12-29 CN CN201822270591.0U patent/CN209873811U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555130A (en) * | 2018-12-29 | 2019-04-02 | 长江勘测规划设计研究有限责任公司 | Plate doubles as temporary support structure and construction method in subway main body structure |
| CN109555130B (en) * | 2018-12-29 | 2024-01-05 | 长江勘测规划设计研究有限责任公司 | Middle plate of subway main body structure and temporary supporting structure and construction method |
| CN113463639A (en) * | 2021-07-07 | 2021-10-01 | 南京东土建设科技有限公司 | Underground continuous wall distributed grouting system |
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