CN216077152U - Shield structure - Google Patents
Shield structure Download PDFInfo
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- CN216077152U CN216077152U CN202122353548.2U CN202122353548U CN216077152U CN 216077152 U CN216077152 U CN 216077152U CN 202122353548 U CN202122353548 U CN 202122353548U CN 216077152 U CN216077152 U CN 216077152U
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Abstract
The utility model provides a shield structure, relates to the technical field of tunnel engineering, and solves the problems of water seepage and independent load bearing of duct pieces and steel pipes in the prior art; the encapsulating concrete structure comprises a waterproof plastic plate, a communication silicon core pipe and a self-compacting concrete layer which are sequentially arranged from outside to inside, the outer wall of the waterproof plastic plate is connected with the primary lining inner wall of the tunnel, the self-compacting concrete layer is integrally arranged to be a tubular structural member, the self-compacting concrete layer is sleeved on the outer wall of the tunnel penetrating steel pipe, the outer wall of the self-compacting concrete layer is connected with the inner wall of the waterproof plastic plate, and the communication silicon core pipe is embedded in the self-compacting concrete layer. The waterproof plastic plate is paved on the inner wall of the tunnel primary lining, has the characteristic of better water seepage prevention effect, and the tunnel primary lining and the tunnel penetrating steel pipe are connected through the self-compacting concrete layer filled between the tunnel primary lining and the tunnel penetrating steel pipe, so that the waterproof plastic plate can bear load together.
Description
Technical Field
The utility model relates to the technical field of tunnel engineering, in particular to a shield structure.
Background
The pressure water delivery shield tunnel has the characteristics of large buried depth, complex hydrological and texture conditions of the environment and high internal water pressure. In the current pressure water delivery shield tunnel, there is the infiltration problem between the section of jurisdiction, does not combined action bear the load between section of jurisdiction and the steel pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims to design a shield structure, a waterproof plastic plate is paved on the inner wall of a primary lining of a tunnel, the shield structure has the characteristic of better water seepage prevention effect, and the primary lining of the tunnel and a tunnel steel pipe are connected through a self-compacting concrete layer filled between the primary lining and the tunnel steel pipe and can bear load together.
The utility model is realized by the following technical scheme:
a shield structure comprises a tunnel primary lining, an encapsulated concrete structure and a tunnel penetration steel pipe which are coaxial and are sequentially sleeved from outside to inside;
the encapsulating concrete structure comprises a waterproof plastic plate, a communication silicon core pipe and a self-compacting concrete layer which are sequentially arranged from outside to inside, wherein the outer wall of the waterproof plastic plate is connected with the inner wall of the primary lining of the tunnel, the self-compacting concrete layer is integrally arranged to be a tubular structural member, the self-compacting concrete layer is sleeved on the outer wall of the hole penetrating steel pipe, the outer wall of the self-compacting concrete layer is connected with the inner wall of the waterproof plastic plate, and the communication silicon core pipe is embedded in the self-compacting concrete layer.
When adopting above-mentioned structure that sets up, waterproof plastic board is laid and is regarded as extra waterproof layer on the tunnel lining inner wall just, has the better characteristics of prevention of seepage water effect, and the tunnel lining just is connected through the self-compaction concrete layer of packing between with the hole steel pipe, can get up tunnel lining just and hole steel pipe hookup and undertake inside and outside load jointly.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the tunnel primary lining is set as a reinforced concrete prefabricated segment, a segment ring comprises three standard blocks, two adjacent blocks and a capping block, and the waterproof plastic plates cover the splicing seams among the blocks.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the blocks in one ring are connected by adopting bent bolts.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the setting angle of the capping block is set to be 22.5 degrees.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the waterproof plastic plate is a polyethylene low-foaming closed-cell foam plastic plate.
Further: and the arch top of the hole-penetrating steel pipe is provided with an orifice.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: and a steel pipe groove is arranged on the opening edge of the hole penetrating steel pipe.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the steel pipe groove is a V-shaped groove with a truncated edge.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the inner wall and the outer wall of the hole-penetrating steel pipe are respectively connected with an inner anticorrosive layer and an outer anticorrosive layer.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the inner anti-corrosion layer is provided with five food-grade solvent-free epoxy ceramic anti-corrosion coatings which are sequentially connected from outside to inside.
Further: the inner anti-corrosion layer comprises a first primer layer, a second primer layer, a first surface paint layer, a second surface paint layer and a third surface paint layer which are sequentially arranged from outside to inside, and the first primer layer and the second primer layer are arranged to be epoxy zinc-rich paint layers.
Further: the total thickness of the dry films of the inner anti-corrosion layer is more than or equal to 500 mu m, and the dry film thicknesses of the first primer layer and the second primer layer are both 30 +/-5 mu m.
In order to further better implement the utility model, the following arrangement structure is particularly adopted: the outer anticorrosive layer is an epoxy zinc-rich primer layer and an epoxy intermediate paint layer which are sequentially connected from inside to outside.
Further: the dry film thickness of the epoxy zinc-rich primer layer is set to 80 μm, and the dry film thickness of the epoxy intermediate paint layer is set to 80 μm.
The utility model has the following advantages and beneficial effects:
according to the utility model, the waterproof plastic plate is paved on the inner wall of the tunnel primary lining to serve as an additional waterproof layer, so that the waterproof plastic plate has the characteristic of better water seepage prevention effect, the tunnel primary lining and the tunnel penetrating steel pipe are connected through the self-compacting concrete layer filled between the tunnel primary lining and the tunnel penetrating steel pipe, and the tunnel primary lining and the tunnel penetrating steel pipe can be connected together to bear the internal and external loads together.
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 cross-sectional view of a shield structure;
FIG. 2 is a schematic cross-sectional view of a primary tunnel lining;
FIG. 3 is a schematic view of the layered structure of the corrosion protection layer on the perforated steel pipe;
labeled as:
1. primary lining of the tunnel; 11. a standard block; 12. an abutting block; 13. sealing the top block; 2. a waterproof plastic plate; 3. a communication silicon core pipe; 4. a self-compacting concrete layer; 5. penetrating a steel pipe through the hole; 51. a first primer layer; 52. a second primer layer; 53. a first topcoat layer; 54. a second topcoat layer; 55. a third surface paint layer; 56. an epoxy zinc-rich primer layer; 57. and (4) an epoxy intermediate paint layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Example 1:
the utility model provides a shield constructs structure, waterproof plastic board paves at the tunnel and just lines the inner wall, has the better characteristics of prevention of seepage water effect, and the tunnel just lines and passes through the self-compaction concrete layer of filling between them with the hole steel pipe and be connected, can bear load jointly, as shown in figure 1, figure 2, figure 3, sets to following structure especially:
the shield structure comprises a tunnel primary lining 1, an encapsulated concrete structure and a tunnel penetration steel pipe 5 which are coaxially arranged and sequentially sleeved from outside to inside. The shield tunnel is a standard circular tunnel, and the primary lining 1, the encapsulated concrete structure and the tunnel-penetrating steel pipe 5 of the tunnel are circular pipe structures.
The tunnel is first lined 1 and is adopted prefabricated section of jurisdiction of reinforced concrete, include along axial many still the section of jurisdiction ring and constitute, every ring pipe section of jurisdiction ring wherein includes that three standard blocks (A piece) 11, two adjacent block (B piece) 12 and one block of capping (K piece) 13 assemble and form, capping 13 set up the angle and set up to 22.5, section of jurisdiction intra-annular diameter 3200mm, external diameter 3800mm, section of jurisdiction thickness 300mm, width 1200 mm. All the blocks in one segment ring are connected and fixed by adopting bent bolts. The concrete strength ratings of the standard block 11, the adjoining block 12 and the capping block 13 were set to C50, the impermeability rating W10F 150.
The encapsulating concrete structure has a clearance R of 1.6m and a thickness of 0.3m, and comprises a waterproof plastic plate 2, a communication silicon core pipe 3 and a self-compacting concrete layer 4 which are sequentially arranged from outside to inside. The waterproof plastic board 2 adopts a polyethylene low-foaming closed-cell foam plastic board,
the outer wall of the waterproof plastic plate 2 is connected to the inner wall of the primary lining 1 of the tunnel to cover the splicing seams among all the blocks. Self-compaction concrete layer 4 is for pouring the concrete layer in the annular space between tunnel primary lining 1 and hole penetration steel pipe 5, the inner wall connection of self-compaction concrete layer 4 is on the hole penetration steel pipe 5 outer wall, the 2 inner walls of self-compaction concrete layer 4's outer wall connection waterproof plastic board, be formed with the clearance between many communication silicon core pipes 3, self-compaction concrete layer 4 is through the inner wall connection of this clearance and tunnel primary lining 1, communication silicon core pipe 3 then inlays and locates in self-compaction concrete layer 4. Hole penetrating steel pipe 5 is DN2600mm, and t is 18mm, and L is 6 m's steel pipe, adopts Q235C steel merogenesis preparation, and single section steel pipe is heavy about 6.97t, and the vault of hole penetrating steel pipe 5 is provided with an drill way for the annular space pouring concrete that just lines 1 and hole penetrating steel pipe 5 spare to the tunnel forms self-compaction concrete layer 4.
This kind of waterproof plastic board 2 among the shield structure is laid on 1 inner wall of tunnel primary lining as extra waterproof layer, has the better characteristics of prevention of seepage water effect, and tunnel primary lining 1 is connected through the self-compaction concrete layer 4 of packing between them with hole steel pipe 5, can get up tunnel primary lining 1 and hole steel pipe 5 hookup and undertake inside and outside load jointly.
Example 2:
the embodiment is further optimized on the basis of the above embodiment, and in order to further better implement the utility model, the following arrangement structure is particularly adopted:
and a V-shaped groove with a truncated edge is processed at the edge of the end part of the hole penetrating steel pipe 5 and is used for welding the two hole penetrating steel pipes 5 which are convenient to butt.
Example 3:
the embodiment is further optimized on the basis of the above embodiment, and in order to further better implement the utility model, the following arrangement structure is particularly adopted:
the inner wall and the outer wall of the hole-penetrating steel pipe 5 are respectively sprayed with an inner anticorrosive layer and an outer anticorrosive layer.
Specifically, the inner anti-corrosion layer has five layers, the five layers are arranged into a first primer layer 51, a second primer layer 52, a first surface paint layer 53, a second surface paint layer 54 and a third surface paint layer 55 which are sequentially connected in a stacking mode from outside to inside, the first primer layer 51, the second primer layer 52, the first surface paint layer 53, the second surface paint layer 54 and the third surface paint layer 55 all adopt food-grade solvent-free epoxy ceramic anti-corrosion coatings, and the first primer layer 51 and the second primer layer 52 are preferably arranged into epoxy zinc-rich paint layers. The total thickness of the dry film of the inner anti-corrosion layer is more than or equal to 500 mu m, and the dry film thickness of the first primer layer 51 and the second primer layer 52 is 30 +/-5 mu m, so that a better anti-corrosion effect is achieved.
The outer anticorrosive layer is provided with an epoxy zinc-rich primer layer 56 and an epoxy intermediate paint layer 57 which are sequentially connected from inside to outside, wherein the dry film thickness of the epoxy zinc-rich primer layer 56 is set to be 80 μm, and the dry film thickness of the epoxy intermediate paint layer 57 is set to be 80 μm.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A shield structure is characterized in that: comprises a tunnel primary lining (1), an encapsulated concrete structure and a hole-penetrating steel pipe (5) which are coaxial and are sleeved from outside to inside in sequence;
the encapsulating concrete structure comprises a waterproof plastic plate (2), a communication silicon core pipe (3) and a self-compacting concrete layer (4), wherein the waterproof plastic plate (2), the communication silicon core pipe and the self-compacting concrete layer are sequentially arranged from outside to inside, the outer wall of the waterproof plastic plate (2) is connected with the inner wall of a primary lining (1) of a tunnel, the self-compacting concrete layer (4) is integrally arranged to be a tubular structural member, the self-compacting concrete layer (4) is sleeved on the outer wall of the tunnel penetrating steel pipe (5), the outer wall of the self-compacting concrete layer (4) is connected with the inner wall of the waterproof plastic plate (2), and the communication silicon core pipe (3) is embedded in the self-compacting concrete layer (4).
2. A shield structure according to claim 1, wherein: the tunnel primary lining (1) is arranged to be a reinforced concrete prefabricated pipe piece, a pipe piece ring comprises three standard blocks (11), two adjacent connecting blocks (12) and a top sealing block (13) which are assembled, and the waterproof plastic plate (2) covers splicing seams among the blocks.
3. A shield structure according to claim 2, wherein: the blocks in one ring are connected by adopting bent bolts.
4. A shield structure according to claim 2 or 3, wherein: the setting angle of the capping block (13) is set to be 22.5 degrees.
5. A shield structure according to claim 1, wherein: the waterproof plastic plate (2) is a polyethylene low-foaming closed-cell foam plastic plate.
6. A shield structure according to claim 1, wherein: and a steel pipe groove is arranged on the opening edge of the hole penetrating steel pipe (5).
7. The shield structure of claim 6, wherein: the steel pipe groove is a V-shaped groove with a truncated edge.
8. A shield structure according to claim 1, wherein: the inner wall and the outer wall of the hole-penetrating steel pipe (5) are respectively connected with an inner anticorrosive layer and an outer anticorrosive layer.
9. The shield structure of claim 8, wherein: the inner anti-corrosion layer is provided with five food-grade solvent-free epoxy ceramic anti-corrosion coatings which are sequentially connected from outside to inside.
10. A shield structure according to claim 8 or 9, wherein: the outer anti-corrosion layer is provided with an epoxy zinc-rich primer layer (56) and an epoxy intermediate paint layer (57) which are sequentially connected from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122353548.2U CN216077152U (en) | 2021-09-27 | 2021-09-27 | Shield structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122353548.2U CN216077152U (en) | 2021-09-27 | 2021-09-27 | Shield structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216077152U true CN216077152U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122353548.2U Active CN216077152U (en) | 2021-09-27 | 2021-09-27 | Shield structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216077152U (en) |
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2021
- 2021-09-27 CN CN202122353548.2U patent/CN216077152U/en active Active
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