CN210660160U - Prefabricated flue plate, flue plate structure and shield tunnel - Google Patents
Prefabricated flue plate, flue plate structure and shield tunnel Download PDFInfo
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- CN210660160U CN210660160U CN201921214372.9U CN201921214372U CN210660160U CN 210660160 U CN210660160 U CN 210660160U CN 201921214372 U CN201921214372 U CN 201921214372U CN 210660160 U CN210660160 U CN 210660160U
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Abstract
The utility model provides a prefabricated flue board, including the plate body that can follow tunnel length direction concatenation, have first link and second link along the concatenation orientation plate body, first link has first inclined plane and first bonding surface, and first bonding surface extends to the lower surface of plate body by the bottom on first inclined plane, and forms the contained angle between first bonding surface and the first inclined plane, and the second link has the second inclined plane that can laminate with first inclined plane and can with first bonding surface complex second faying face. The utility model also provides a flue plate structure, including two piece at least foretell prefabricated flue plates, each prefabricated flue plate splices in proper order along tunnel length direction. The utility model also provides a shield tunnel, including the tunnel body to and install bracket and foretell flue plate structure on this internal both sides wall in tunnel.
Description
Technical Field
The utility model relates to a shield tunnel especially relates to a prefabricated flue plate, flue plate structure and shield tunnel.
Background
The ventilation and smoke discharge of the shield road tunnel generally have two modes, one mode is longitudinal ventilation and smoke discharge, and the other mode is independent smoke discharge channel type centralized smoke discharge (key type smoke discharge). The key smoke exhaust mode is that a smoke exhaust port and a smoke exhaust channel are arranged at the top end of the tunnel, when a fire breaks out in the tunnel, the smoke exhaust port near a fire source and axial flow fans at two ends are opened, so that the smoke exhaust port at the upper part of the smoke exhaust channel is exhausted into the smoke exhaust channel at the top of the tunnel and then exhausted to the outside through a special vertical shaft or an exhaust port, and as the shield tunnel is of a circular section, the space at the upper part of the tunnel can be set as the smoke exhaust channel for smoke exhaust under the. Therefore, the key smoke exhaust mode is widely applied to the shield tunnel, in particular to the long and large shield tunnel.
The flue plate is a structure which is arranged in the upper space of the shield tunnel and is connected with the arch top pipe piece, a discharge flue is formed inside the structure, the structure is generally an assembled arch plate which is assembled in blocks, the arch is favorable for gathering flue gas in the space of the roadway at the top and entering a discharge port and a discharge flue, and in order to ensure the tightness of smoke discharge, the seam between the flue plates must be subjected to fireproof sealing treatment.
The flue plate structure for the existing tunnel exhaust duct is formed by sequentially splicing a plurality of prefabricated flue plates along the length direction of a tunnel, the cross section of each prefabricated flue plate is arched, each prefabricated flue plate is provided with a convex top surface, a concave bottom surface and two butt joint end surfaces, and adjacent prefabricated flue plates are butted through the butt joint end surfaces and notches. This type of flue plate seam structure is vertical, and it has the following defect: 1) the effective sealing of the joint can be ensured only by extruding between the adjacent flue plates, once the flue plates are loosened, the sealing can be damaged, and the installation requirement is higher; 2) the fireproof sealing material filled in the joints of the flue plates is easy to fall off in the vertical joints after aging, so that the sealing performance is affected; 3) the flue plate assembly of the curve section has larger gaps and poor sealing property.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prefabricated flue board aims at being used for solving the relatively poor problem of leakproofness of current tunnel exhaust duct.
The utility model discloses a realize like this:
the utility model provides a prefabricated flue board, including the plate body that can follow tunnel length direction concatenation, have first link and second link along the concatenation direction plate body, first link has first inclined plane and first bonding surface, first bonding surface is extended to the lower surface of plate body by the bottom on first inclined plane, and forms the contained angle between first bonding surface and the first inclined plane, the second link have can with the second inclined plane of first inclined plane laminating and can with first bonding surface complex second faying face.
Preferably, the first joining surface extends in a thickness direction of the plate body.
Preferably, the first connection end has a fitting surface extending from the top end of the first inclined surface to the upper surface of the plate body, an included angle is formed between the fitting surface and the first inclined surface, and the second inclined surface extends from the top end of the first fitting surface to the upper surface of the plate body.
Preferably, the mating surface extends in a thickness direction of the plate body.
The utility model also provides a flue plate structure, including two piece at least foretell prefabricated flue boards, each prefabricated flue board splices in proper order along tunnel length direction, in two adjacent prefabricated flue boards, on the first inclined plane laminating of one of them prefabricated flue board fits on the second inclined plane of another prefabricated flue board, and the second faying face of one of them prefabricated flue board extends the contained angle department and the cooperation of first faying face that another prefabricated flue board's first faying face and first inclined plane formed.
Preferably, a gap filled with fireproof sealant is enclosed between the first connecting end of one prefabricated flue plate and the second inclined surface of the other prefabricated flue plate in the two adjacent prefabricated flue plates, and the gap is positioned at the top of the two prefabricated flue plates.
Preferably, the gap is filled with a polyethylene foam strip, and the polyethylene foam strip is positioned below the fireproof sealant.
Preferably, the flue plate structure includes a fitting surface extending from the top end of the first inclined surface to the upper surface of the plate body, an included angle is formed between the fitting surface and the first inclined surface, and a gap is defined between the fitting surface and the second inclined surface.
Preferably, a polyethylene liner plate is filled between the first bonding surface and the second bonding surface.
The utility model also provides a shield tunnel, including the tunnel body, still including installing bracket and the foretell flue plate structure on this internal both sides wall of tunnel, the flue plate structure is erect on the bracket, the synthetic discharge flue is enclosed with the inner wall at tunnel body top to the flue plate structure.
The utility model discloses following beneficial effect has:
1. the utility model provides a flue plate structure utilizes flue plate self gravity to increase the pressure of butt joint terminal surface because the seam inclines, has promoted the leakproofness of seam, and in addition, fire-proof material is located the top of slope seam, can avoid adopting traditional vertical seam, fills the problem that the fire-proof material dropped easily after ageing.
2. The utility model provides a flue plate structure can adapt to the requirement that no open seam was assembled to curve section flue plate, and can not have great breach gap assembling the in-process.
3. The utility model provides a flue plate structure adopts two kinds of butt joint terminal surfaces of first link and second link, has formed the seam structure that upper portion is triangle-shaped breach, middle part slope seam, the vertical seam in lower part to through pack fire prevention sealant and polyethylene foam strip in the triangle-shaped breach, pack low density polyethylene liner plate in the vertical seam in lower part, effectively improve the fire sealing performance of seam structure.
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 view of a shield tunnel according to an embodiment of the present invention;
fig. 2 is a partial schematic view of a flue plate structure provided in an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the embodiment of the utility model provides a prefabricated flue board 1, including the plate body that can follow tunnel length direction concatenation, have two kinds of butt joint terminal surfaces of first link 7 and second link along the concatenation direction plate body, first link 7 has first inclined plane 12 and first faying face 13, first faying face 13 is extended to the lower surface of plate body by the bottom on first inclined plane 12, and forms the contained angle between first faying face 13 and the first inclined plane 12, second link 8 has second inclined plane 14 that can laminate with first inclined plane 12 and can with first faying face 13 complex second faying face 15. The embodiment of the utility model provides a still provide a flue plate structure, including two piece at least foretell prefabricated flue board 1, each prefabricated flue board 1 splices in proper order along tunnel length direction, in two adjacent prefabricated flue boards 1, the first inclined plane 12 of one of them prefabricated flue board is laminated on the second inclined plane 14 of another prefabricated flue board, and the second faying face 15 of one of them prefabricated flue board extends the contained angle department and the cooperation of first faying face 13 that the first faying face 13 and the first inclined plane 12 of another prefabricated flue board formed. The flue plate structure provided by the utility model increases the pressure of the butt joint end face by utilizing the self gravity of the flue plate due to the inclination of the joint, thereby improving the sealing property of the joint; the utility model provides a flue plate structure can adapt to the requirement that no open seam was assembled to curve section flue plate, and can not have great breach gap assembling the in-process.
The utility model provides a flue plate structure is applied to shield tunnel discharge flue, has solved the leakproofness and the durability problem of flue plate seam structure, has improved the performance and the efficiency of discharging fume of shield tunnel discharge flue, and it is more convenient to install.
Preferably, the first joining surface 13 extends in the thickness direction of the plate body.
Preferably, the first connection end 7 has a fitting surface 16 extending from the top end of the first inclined surface 12 to the upper surface of the plate body, an included angle is formed between the fitting surface 16 and the first inclined surface 12, the second inclined surface 14 extends from the top end of the first coupling surface 13 to the upper surface of the plate body, and the fitting surface 16 extends in the thickness direction of the plate body.
Preferably, in two adjacent prefabricated flue gas duct boards, a gap for filling the fireproof sealant 10 is defined between the first connecting end 7 of one prefabricated flue gas duct board and the second inclined plane of the other prefabricated flue gas duct board, the gap is located at the top of the two prefabricated flue gas duct boards 1, in this embodiment, the flue gas duct board structure includes a fitting surface 16 extending from the top end of the first inclined plane 12 to the upper surface of the board body, an included angle is formed between the fitting surface 16 and the first inclined plane 12, a gap is defined between the fitting surface 16 and the second inclined plane 14, and the fireproof material is located above the inclined joint, so that the problem that the filling fireproof material is easy to drop after aging due to the adoption of a traditional vertical joint can be avoided.
Preferably, the gap is filled with a polyethylene foam strip 11, and the polyethylene foam strip 11 is positioned below the fireproof sealant 10.
Preferably, a polyethylene liner plate 9 is filled between the first bonding surface 13 and the second bonding surface 15.
After the first connecting end 7 and the second connecting end 8 are butted, a joint structure with a triangular gap at the upper part, an inclined joint at the middle part and a vertical joint at the lower part is formed, the triangular gap is filled with fireproof sealant 10 and a polyethylene foam strip 11, the polyethylene foam strip 11 is positioned below the fireproof sealant 10, and the vertical joint at the lower part is filled with a low-density polyethylene liner plate 9.
The embodiment of the utility model provides a shield tunnel still provides, including the tunnel body, still including installing bracket 3 and foretell flue plate structure on this internal both sides wall of tunnel, the flue plate structure is erect on bracket 3, the synthetic discharge flue is enclosed with section of jurisdiction 5 at tunnel body top to the flue plate structure, and the lower surface coating of flue plate structure has tunnel fire prevention special coating 4, and it has plain concrete 2 to fill between the both sides wall of flue plate structure and tunnel body.
As shown in fig. 1-3, the flue plate 1 has a transverse section of an upward-convex arc-shaped plate structure, the cross-sectional shapes of both sides of the arc-shaped bottom are symmetrically arranged to be horizontal chamfers and vertical chamfers, the flue plate 1 comprises plate bodies which can be spliced along the length direction of the tunnel, the plate bodies are provided with a first connecting end 7 and a second connecting end 8 along the splicing direction, the upper part of the first connecting end 7 is a section of vertical plane, the middle part is an inclined plane which inclines inwards, and the lower part is a section of vertical plane; the upper part of the second connecting end 8 is a longer inclined plane inclined towards the outside of the plate, and the lower part is a vertical inclined plane. The adjacent flue plates are butted through the first connecting end and the second connecting end, a triangular notch is formed in the upper portion of the butted joint, the middle portion of the butted joint is an oblique joint, and the lower portion of the butted joint is a vertical joint.
A plurality of prefabricated flue plates 1 are sequentially assembled along the length direction of the tunnel and form a flue space with duct pieces 5 at the vault of the tunnel.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a prefabricated flue board, includes the plate body that can follow tunnel length direction concatenation, its characterized in that: the plate body is provided with a first connecting end and a second connecting end along the splicing direction, the first connecting end is provided with a first inclined surface and a first combining surface, the first combining surface extends from the bottom of the first inclined surface to the lower surface of the plate body, an included angle is formed between the first combining surface and the first inclined surface, and the second connecting end is provided with a second inclined surface which can be attached to the first inclined surface and a second combining surface which can be matched with the first combining surface.
2. The prefabricated flue plate of claim 1 wherein: the first combining surface extends along the thickness direction of the plate body.
3. The prefabricated flue plate of claim 1 wherein: the first connecting end is provided with a matching surface extending from the top end of the first inclined surface to the upper surface of the plate body, an included angle is formed between the matching surface and the first inclined surface, and the second inclined surface extends from the top end of the first matching surface to the upper surface of the plate body.
4. The prefabricated flue plate of claim 3 wherein: the matching surface extends along the thickness direction of the plate body.
5. A flue plate structure, its characterized in that: the prefabricated flue plate comprises at least two prefabricated flue plates as claimed in claim 1, wherein the prefabricated flue plates are sequentially spliced along the length direction of a tunnel, a first inclined surface of one prefabricated flue plate is attached to a second inclined surface of the other prefabricated flue plate in two adjacent prefabricated flue plates, and a second combining surface of one prefabricated flue plate extends to an included angle formed by the first combining surface of the other prefabricated flue plate and the first inclined surface to be matched with the first combining surface.
6. The flue plate structure of claim 5 wherein: in two adjacent prefabricated flue plates, a gap for filling fireproof sealant is enclosed between the first connecting end of one prefabricated flue plate and the second inclined surface of the other prefabricated flue plate, and the gap is positioned at the top of the two prefabricated flue plates.
7. The flue plate structure of claim 6 wherein: and a polyethylene foam strip is also filled in the gap and is positioned below the fireproof sealant.
8. The flue plate structure of claim 6 wherein: the plate comprises a matching surface extending from the top end of the first inclined surface to the upper surface of the plate body, an included angle is formed between the matching surface and the first inclined surface, and a notch is formed between the matching surface and the second inclined surface.
9. The flue plate structure of claim 5 wherein: and a polyethylene liner plate is filled between the first bonding surface and the second bonding surface.
10. The utility model provides a shield tunnel, includes tunnel body, its characterized in that: further comprising corbels arranged on two side walls in the tunnel body and a flue plate structure according to any one of claims 5 to 9, wherein the flue plate structure is erected on the corbels, and the flue plate structure and the inner wall of the top of the tunnel body enclose a combined flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921214372.9U CN210660160U (en) | 2019-07-30 | 2019-07-30 | Prefabricated flue plate, flue plate structure and shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921214372.9U CN210660160U (en) | 2019-07-30 | 2019-07-30 | Prefabricated flue plate, flue plate structure and shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660160U true CN210660160U (en) | 2020-06-02 |
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ID=70842879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921214372.9U Active CN210660160U (en) | 2019-07-30 | 2019-07-30 | Prefabricated flue plate, flue plate structure and shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660160U (en) |
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2019
- 2019-07-30 CN CN201921214372.9U patent/CN210660160U/en active Active
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