CN219865027U - Composite segment applied to shield interval connection channel - Google Patents
Composite segment applied to shield interval connection channel Download PDFInfo
- Publication number
- CN219865027U CN219865027U CN202321318307.7U CN202321318307U CN219865027U CN 219865027 U CN219865027 U CN 219865027U CN 202321318307 U CN202321318307 U CN 202321318307U CN 219865027 U CN219865027 U CN 219865027U
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- China
- Prior art keywords
- concrete layer
- pipe piece
- concrete
- steel plate
- composite pipe
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- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 239000004567 concrete Substances 0.000 claims abstract description 64
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 10
- 230000008014 freezing Effects 0.000 abstract description 24
- 238000007710 freezing Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011405 expansive cement Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
The utility model relates to the technical field of tunnel construction, in particular to a composite pipe piece applied to a shield section connecting passage, wherein the composite pipe piece is arranged in a freezing hole opening range of the shield section connecting passage, the composite pipe piece is fixed with a steel pipe piece and a concrete pipe piece or a concrete pipe piece to form an annular shield pipe piece, the composite pipe piece comprises a concrete layer, the concrete layer is of a reinforced concrete structure, and an inner covering steel plate is fixedly arranged on the inner side of the concrete layer. The composite pipe piece applied to the shield section connecting channel is particularly applied to the freezing open hole of the shield section connecting channel, and the inner side of the concrete layer is provided with the inner covered steel plate which reinforces the reinforced concrete structure of the concrete layer, so that adverse effects caused by pipe piece weakening after the open hole are reduced, and the deformation of the composite pipe piece in the process of excavating a freezing hole is reduced.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a composite segment applied to a shield section connecting channel.
Background
According to the subway design Specification GB50157-2003 19.1.22, it is stated that: and a communication channel is arranged between the two single-line interval tunnels when the continuous length of the tunnels is more than 600 m. Therefore, communication channels are arranged between the uplink and downlink of a large number of subway tunnels.
As shown in fig. 1, the special lining ring segment at the conventional freezing method communication channel consists of a steel pipe segment 1 'in a single-side 2-ring semisteel form, and the rest ranges are all common concrete segments 2'. As shown in fig. 2, the annular steel plate 3 'and the orifice pipe 4' are welded when the hole is frozen, and bolts are arranged to fix the annular steel plate 3 'and the concrete segment 2'. As shown in fig. 3, the hole opening pipe 4 'is required to be cut off during hole sealing, cement mortar 5' is filled in the hole, and finally, the square steel plate 6 'is connected with the concrete segment 2' through bolts, so that adverse effects are produced on the structural weakening and durability of the segment, meanwhile, the square steel plate 6 'is not easy to be compact through the bolt connection with the concrete segment 2', a seepage channel is easy to be produced, water in the soil can seep along the seepage channel, and the water leakage phenomenon can occur at the position where the freezing hole is located.
Disclosure of Invention
The utility model aims to solve the problems that after the existing concrete segment freezes an opening, the segment structure is weakened and the durability are easily affected, and a square steel plate is connected with the concrete segment through bolts after a freezing hole is blocked, so that a seepage channel is easily generated, and provides a composite segment applied to a freezing opening of a communication channel in a shield section.
The technical scheme of the composite pipe piece applied to the shield section connection channel is as follows:
be applied to the compound section of jurisdiction of shield section connection passageway department, compound section of jurisdiction sets up in the section connection passageway of shield and freezes the hole trompil scope, just compound section of jurisdiction, steel-pipe piece and concrete section of jurisdiction or compound section of jurisdiction and a plurality of interconnect of concrete pipe piece form annular shield section of jurisdiction, compound section of jurisdiction includes concrete layer and interior steel sheet that covers, interior steel sheet embedding concrete layer and surface with concrete layer surface flushes.
Further, the concrete layer is a reinforced concrete structure.
Further, a plurality of connecting holes are formed in the concrete layer, connecting bolts used for connecting adjacent concrete layers are arranged in the connecting holes, and the inner covering steel plates are embedded into the concrete layer at positions avoiding the connecting holes.
Further, a plurality of anchor bars are fixedly arranged on one side, close to the concrete layer, of the inner covering steel plate, and the anchor bars are inserted into the concrete layer.
Further, the inner covered steel plate is welded with the anchor bars, and the anchor bars avoid the steel bars, grouting holes and hand holes in the concrete layer.
Further, the clear distance between the anchor bars and the steel bars, grouting holes and hand holes in the concrete layer is larger than 25mm.
Further, the surface of the inner covered steel plate is coated with an anti-corrosion layer.
Compared with the prior art, the utility model has the beneficial effects that:
the composite pipe piece applied to the shield section connecting channel is particularly applied to the freezing open hole of the shield section connecting channel, and the inner side of the concrete layer is provided with the inner covered steel plate which reinforces the reinforced concrete structure of the concrete layer, so that adverse effects caused by pipe piece weakening after the open hole are reduced, and the deformation of the composite pipe piece in the process of excavating a freezing hole is reduced.
In the freezing implementation process, at least 4 steel bars are adopted for welding and fixing between the exposed part of the orifice pipe and the inner covered steel plate, and the orifice pipe and the inner covered steel plate are welded and fixed for one circle, so that leakage is not easy to cause in the freezing implementation process.
When the orifice pipe is plugged, the orifice pipe and the freezing pipe are cut off, and the residual space is filled with C30 sulphoaluminate micro-expansive cement and is flush with the inside of the composite pipe piece. A square steel plate is arranged on the inner side of the inner covered steel plate, and the square steel plate is welded with the inner covered steel plate; the surface of the square steel plate is coated with the anti-corrosion paint, and then the outer side of the square steel plate is smoothed by adopting epoxy mortar, so that leakage is not easy to occur after the freezing holes are blocked.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is an expanded view of a special lining ring segment at a freeze method communication channel in the background art.
Fig. 2 is a schematic diagram of an orifice tube mounting structure in the background art.
Fig. 3 is a cross-sectional view of an orifice tube mounting structure in the background art.
In fig. 1-3: 1', steel pipe sheets; 2', concrete segments; 3', an annular steel plate; 4', orifice tube.
Fig. 4 is an expanded view of a composite segment applied at a shield section communication passage in an embodiment.
Fig. 5 is a schematic diagram of a connection structure between an inner clad steel plate and an anchor bar in the embodiment.
Fig. 6 is an expanded view of a specially lined loop segment at a freeze connection channel in an embodiment.
Fig. 7 is a schematic diagram of an orifice tube mounting structure in an embodiment.
Fig. 8 is a cross-sectional view of an orifice tube mounting structure in an embodiment.
Fig. 9 is a schematic structural view of the composite pipe sheet after hole sealing in the example.
Fig. 10 is an expanded view of the composite pipe sheet after hole sealing in the example.
In the figure: 1. composite duct pieces; 101. a concrete layer; 102. an inner cladding steel plate; 103. anchor bars; 2. a steel pipe sheet; 3. a concrete segment; 4. a connection hole; 5. an orifice tube; 6. fixing the reinforcing steel bars; 7. a freezing pipe; 8. square steel plate; 9. a capping block K; 10. adjacent block B1; 11. adjacent block B2; 12. standard block A1; 13. standard block A2; 14. standard block A3.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the composite segment 1 applied to the connection channel of the shield section in the present embodiment is specifically applied to the freezing opening of the connection channel of the shield section, and the composite segment 1, the steel pipe segment 2 and the concrete segment 3 or a plurality of the composite segment 1 and the concrete segment 3 are connected with each other to form an annular shield segment.
The composite pipe piece 1 comprises a concrete layer 101, the concrete layer 101 and the concrete pipe piece 3 are identical in structure, the concrete layer 101 is of a reinforced concrete structure, the concrete layer 101 is provided with a connecting hole 4, a connecting bolt is arranged in the connecting hole 4, and the composite pipe piece 1 is connected with the adjacent composite pipe piece 1, steel pipe piece 2 or the concrete pipe piece 3 through the connecting bolt. The concrete layer 101 is fixedly provided with an inner steel plate 102, specifically, the inner steel plate 102 is embedded into the concrete layer 101 and avoids the connecting hole 4, one side of the inner steel plate 102 embedded into the concrete layer 101 is fixedly provided with a plurality of anchor bars 103, the anchor bars 103 are inserted into the concrete layer 101, and accordingly the inner steel plate 102 is fixedly connected with the concrete layer 101, specifically, the composite pipe piece 1 is of a prefabricated structure, and the anchor bars 103 are embedded into the concrete layer 101. Preferably, the anchor bar 103 is in a U-shaped structure, the anchor bar 103 is welded with the inner cladding steel plate 102, and the height of the welding seam is 8mm. The positions of the anchor bars 103 avoid the steel bars, grouting holes and hand holes in the concrete layer 101, and the clear distance between the anchor bars 103 and the steel bars, grouting holes and hand holes in the concrete layer 101 is larger than 25mm. The surface of the inner covered steel plate 102 is coated with an anti-corrosion layer, and the anti-corrosion layer is formed by coating anti-corrosion paint which is made of the same material as the steel pipe sheet 2.
In this embodiment, as shown in fig. 6, the composite pipe piece 1 is installed in the opening range of the freezing holes of the three ring pipe pieces on two sides of the center mileage of the left and right wire connecting channels, the steel pipe piece 2 is installed in one ring pipe piece on two sides of the center mileage of the left and right wire connecting channels, and the concrete pipe piece 3 is installed in the rest range. Each ring segment is divided into six segments, each segment is respectively a capping block K9, an adjacent block B110, an adjacent block B211, a standard block A112, a standard block A213 and a standard block A314, the capping block K9 is arranged at the top end of the ring shield segment, two groups of adjacent blocks B110 and B2 are symmetrically arranged at two sides of the capping block K9, three groups of standard blocks A112, A2 and A3 are sequentially arranged between the two groups of adjacent blocks B110 and B2, and all the segments are connected through a plurality of connecting holes 4 which are arranged along the ring shield segment in the circumferential direction and a plurality of connecting holes which are arranged along the longitudinal direction of the ring shield segment. The steel pipe sheet 2 is a standard block A112 and an adjacent block B110 in two adjacent annular shield segments in the center mileage of the left and right line connecting channels. The shape of the composite pipe piece 1 is the same as the shape of the same type of concrete pipe piece 3 corresponding to the installation position.
Specifically, in this embodiment, as shown in fig. 6, the shield segment where the steel pipe sheet 2 is located is used as a first ring, two adjacent second rings on two sides of the first rings, a third ring is located on the other side of the second rings, and segments of the first ring, the second ring and the third ring are installed in a staggered manner. The capping block K9 of the first ring, the standard blocks A112 and A2 of the second ring, the adjacent block B110 of the second ring, the standard block A112 of the third ring and the adjacent block B110 of the third ring are all composite duct pieces 1.
In this embodiment, as shown in fig. 7, when the freezing hole is opened, the exposed portion of the orifice pipe 5 and the inner clad steel plate are welded and fixed by four fixing reinforcing steel bars 6 with diameters not smaller than 12mm, and the orifice pipe 5 and the inner clad steel plate are welded and fixed by one turn. Specifically, the fixing bars 6 are distributed on the periphery of the orifice pipe 5 in an annular array manner, the fixing bars 6 are obliquely arranged relative to the orifice pipe 5, and two ends of the fixing bars 6 are welded with the orifice pipe 5 and the inner cladding steel plate 102 respectively.
In this embodiment, as shown in fig. 8, when the orifice tube 5 is plugged, the orifice tube 5 and the freezing tube 7 are cut off until the depth in the composite segment 1 is not less than 100mm, and the residual space is filled with the C30 sulphoaluminate micro-expansive cement and is flush with the composite segment 1. The square steel plate 8 is arranged on the inner side of the inner covered steel plate 102, specifically, the size of the square steel plate 8 is 300 multiplied by 12mm, the square steel plate 8 and the outer covered steel plate are welded and connected, and the welding seam height is 8mm. The surface of the square steel plate 8 is coated with an anti-corrosion layer, the anti-corrosion layer is formed by coating anti-corrosion paint which is made of the same material as the steel pipe sheet 2, an epoxy mortar layer is further arranged on the outer side of the square steel plate 8, and the epoxy mortar layer is smoothed by epoxy mortar.
The working principle of the composite segment 1 applied to the shield section connection channel in the embodiment is as follows:
the composite pipe piece 1 applied to the shield section connecting passage is particularly applied to the freezing open hole of the shield section connecting passage, and the inner steel plate 102 is arranged on the inner side of the concrete layer 101, so that the reinforced concrete structure of the concrete layer 101 is reinforced by the inner steel plate 102, the adverse effect caused by pipe piece weakening after the open hole is reduced, and the deformation of the composite pipe piece 1 in the process of freezing hole excavation is reduced.
In the freezing implementation process, at least 4 steel bars are adopted for welding and fixing between the exposed part of the orifice pipe 5 and the inner covered steel plate, and the orifice pipe 5 and the inner covered steel plate are welded and fixed in a circle, so that leakage is not easy to cause in the freezing implementation process.
When the orifice pipe 5 is plugged, the orifice pipe 5 and the freezing pipe 7 are removed, and the residual space is filled with C30 sulphoaluminate micro-expansive cement and is flush with the inside of the composite pipe piece 1. As shown in fig. 9 and 10, a square steel plate 8 is arranged on the inner side of the inner covered steel plate 102, and the square steel plate 8 and the inner covered steel plate are connected by welding; the surface of the square steel plate 8 is coated with anti-corrosion paint, and then the outer side of the square steel plate 8 is smoothed by adopting epoxy mortar, so that leakage is not easy to cause after the freezing holes are blocked.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. Be applied to the compound section of jurisdiction of shield section connection passageway department, its characterized in that, compound section of jurisdiction (1) sets up in the section connection passageway of shield and freezes the hole trompil scope, just compound section of jurisdiction (1), steel-pipe piece (2) and concrete section of jurisdiction (3) or a plurality of interconnect of compound section of jurisdiction (1) and concrete section of jurisdiction (3) form annular shield section of jurisdiction, compound section of jurisdiction (1) include concrete layer (101) and interior steel sheet (102), interior steel sheet (102) embedding concrete layer (101) and surface with concrete layer (101) surface flushes.
2. The composite pipe sheet applied to a shield section connection passage according to claim 1, wherein the concrete layer (101) is a reinforced concrete structure.
3. The composite pipe piece applied to the shield section connection passage according to claim 2, wherein a plurality of connecting holes (4) are formed in the concrete layer (101), connecting bolts for connecting adjacent concrete layers are arranged in the connecting holes (4), and the inner steel plates (102) are embedded into the concrete layer (101) at positions avoiding the connecting holes (4).
4. A composite pipe piece applied to a shield section connection passage according to claim 3, wherein a plurality of anchor bars (103) are fixedly arranged on one side of the inner covered steel plate (102) close to the concrete layer (101), and the anchor bars (103) are inserted into the concrete layer (101).
5. The composite pipe piece applied to the shield section connecting channel according to claim 4, wherein the inner covered steel plate (102) is welded with the anchor rib (103), and the anchor rib (103) avoids the steel bars, grouting holes and hand holes in the concrete layer (101).
6. The composite pipe sheet applied to the shield section connection channel according to claim 5, wherein the clear distance between the anchor bars (103) and the steel bars, grouting holes and hand holes in the concrete layer (101) is larger than 25mm.
7. The composite pipe sheet applied to the shield section connection passage according to claim 5, wherein the surface of the inner steel plate (102) is coated with an anti-corrosion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321318307.7U CN219865027U (en) | 2023-05-29 | 2023-05-29 | Composite segment applied to shield interval connection channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321318307.7U CN219865027U (en) | 2023-05-29 | 2023-05-29 | Composite segment applied to shield interval connection channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865027U true CN219865027U (en) | 2023-10-20 |
Family
ID=88370487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321318307.7U Active CN219865027U (en) | 2023-05-29 | 2023-05-29 | Composite segment applied to shield interval connection channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865027U (en) |
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2023
- 2023-05-29 CN CN202321318307.7U patent/CN219865027U/en active Active
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