CN220909706U - Prefabricated segment and interface structure of underground passage - Google Patents
Prefabricated segment and interface structure of underground passage Download PDFInfo
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- CN220909706U CN220909706U CN202322601659.XU CN202322601659U CN220909706U CN 220909706 U CN220909706 U CN 220909706U CN 202322601659 U CN202322601659 U CN 202322601659U CN 220909706 U CN220909706 U CN 220909706U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 241
- 239000010959 steel Substances 0.000 claims abstract description 241
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 33
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 238000011065 in-situ storage Methods 0.000 description 7
- 230000005641 tunneling Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model provides a prefabricated duct piece and an interface structure of an underground passage, which comprise a tunnel portal duct piece, wherein the tunnel portal duct piece is arranged at a tunnel portal of an underground space structure; the temporary duct piece is detachably connected to one end of the tunnel portal duct piece, which is close to the tunnel portal; the embedded steel plate is connected to the outer side of the tunnel portal duct piece in an embedded mode through the embedded ribs and is used for connecting the tunnel portal steel ring after the temporary duct piece is removed. The embedded steel plate can play a role of temporary support, simultaneously, the construction connection between the underground space structure and the underground passage duct piece is more convenient, and meanwhile, reinforcement bar binding is not needed, so that the workload of site construction is reduced; the filling structure cavity has the advantages of faster relative concrete pouring speed and better quality, and can play a role in shortening the construction period and improving the construction efficiency.
Description
Technical Field
The utility model relates to the technical field of duct pieces, in particular to a prefabricated duct piece of an underground passage and an interface structure.
Background
Along with the continuous development of cities, underground space development is gradually deepened, channels arranged between the underground spaces can realize networking of the underground spaces, the functions of personnel passing and evacuation and rescue are achieved, the utilization rate of the underground spaces is improved, mechanical non-excavation construction can be completed under the condition that road traffic and resident traveling are not affected, and a portal structure for connecting the underground channels with the underground spaces is an important link of underground channel construction.
In the prior art, steel pipe joints are arranged at the first ring and the last ring of the underground passage pipe joint, the steel pipe joints are welded and connected with the tunnel portal steel rings of the underground space through water stop steel plates, and the stroke of the construction of the prefabricated pipe joints is difficult to control in the mechanized construction process of the underground passage, so that the condition that the tunnel portal connection structure cannot wrap the steel pipe joints due to the construction errors of the underground passage steel pipe joints is very easy to occur, the steel pipe joints are required to be cut, the structure of the steel pipe joints is complex, and the cutting construction process is complex.
The invention patent of publication No. CN106948833A discloses an assembled connecting channel structure and a construction method thereof, wherein a main tunnel duct piece adopts a steel-concrete composite duct piece, a duct piece at the joint of the connecting channel and the main tunnel is a steel pipe piece, grouting water is carried out after tunneling, and welding connection is carried out after redundant steel pipe pieces are cut off. But the method has lower connection strength between the main tunnel and the connecting channel.
The Chinese patent publication No. CN207686736U discloses a combined steel pipe sheet for connecting with the main tunnel, the steel pipe sheet at the tunnel portal is divided into a fixed pipe section and a temporary pipe section which are required to be removed, and the fixed pipe section and the temporary pipe section are not required to be removed on site. However, the method cannot adapt to torsion in the tunneling process of the pipeline, and the special-shaped duct piece and the main tunnel are not easy to connect after the connecting channel is twisted.
The utility model patent of the authorized bulletin number CN209539364U discloses a joint connection structure of a connecting channel and an interval tunnel, and the utility model patent of the authorized bulletin number CN209100049U discloses a segment structure for a shield method connecting channel, wherein a reinforced concrete portal structure is poured between the connecting channel segment and the interval tunnel segment after welding by adopting a steel plate. But the cast-in-situ structure has low construction efficiency and low speed.
Therefore, the construction of the tunnel portal structure of the underground passage becomes an important node for the construction of the passage, and the design of a prefabricated pipe joint and an interface structure convenient to construct is necessary.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a prefabricated segment and an interface structure of an underground passage, which are used for solving the problems of low construction efficiency and high safety risk of a tunnel portal structure of the underground passage in the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a prefabricated segment and interface structure for an underground passageway, comprising:
The tunnel portal duct piece is arranged at a tunnel portal of the underground space structure;
the temporary duct piece is detachably connected to one end of the tunnel portal duct piece, which is close to the tunnel portal;
the embedded steel plate is connected to the outer side of the tunnel portal duct piece in an embedded mode through the embedded ribs and is used for connecting the tunnel portal steel ring after the temporary duct piece is removed.
Further, the embedded steel plate comprises a pipe piece peripheral steel plate which is attached to the periphery of the pipe piece of the tunnel portal and extends out of the end face of the pipe piece of the tunnel portal, and an end face steel plate which is arranged on the end face of the pipe piece of the tunnel portal; the end face steel plate and the duct piece peripheral steel plate form a T-shaped cross section structure.
The utility model provides an interface structure of underground passage, includes prefabricated section of jurisdiction, still including setting up the sealed steel sheet of door at the door, the sealed steel sheet of door is connected with pre-buried steel sheet and door steel ring and is formed the filling cavity of door seal structure.
Further, the tunnel portal sealing steel plate comprises a connecting steel plate connected between the tunnel portal steel ring and the pipe piece peripheral steel plate.
Further, the tunnel portal sealing steel plate further comprises an arch connecting steel plate and an arch steel plate which are arranged on the arch and/or the arch bottom; one end of the arch steel plate is vertically connected with the inner edge of the end face steel plate, and the other end of the arch steel plate is connected with one end of the portal steel ring, which faces the underground space structure, through the arch connecting steel plate, so that the portal steel ring, the connecting steel plate, the pipe piece peripheral steel plate, the end face steel plate, the arch steel plate and the arch connecting steel plate enclose a filling cavity of the portal ring beam.
Further, the tunnel portal sealing steel plate comprises a second upright steel plate arranged at the tunnel portal, and the outer edge of the second upright steel plate is connected with the inner edge of the end surface steel plate and/or the end part of the arch steel plate.
Further, the tunnel portal sealing steel plate further comprises first upright steel plates which are parallel to the second upright steel plates and are arranged at intervals, and the arch top and/or the arch bottom of the first upright steel plates are connected with the end parts of the arch part steel plates; the arched waist part of the first upright steel plate is connected with the end part of the steel plate at the periphery of the duct piece, so that the first upright steel plate, the second upright steel plate, the arch steel plate, the end surface steel plate and the steel plate at the periphery of the duct piece enclose a filling cavity of the tunnel portal.
Further, the tunnel portal sealing steel plate further comprises a column connecting steel plate arranged on the arch waist, one end of the column connecting steel plate is connected with the end of the steel plate on the periphery of the duct piece, and the other end of the column connecting steel plate is connected with one end, facing the underground space structure, of the tunnel portal steel ring.
Further, the cavity filling material of the cavity and/or the cavity filling material of the cavity ring beam are/is filled with the cavity filling material or concrete is poured in the cavity filling material.
Further, a grouting pipe is arranged in the underground space structure and used for injecting waterproof materials to the outer side of the embedded steel plate and/or the outer side of the tunnel portal duct piece to form a reinforcing body.
The utility model has the beneficial effects that:
1. The embedded steel plate arranged on the underground passage portal duct piece can play a role in temporary support, meanwhile, the construction connection between an underground space structure and the underground passage duct piece is more convenient, reinforcement bar binding is not needed, the workload of site construction is reduced, the grouting filling structure cavity has a faster speed and better quality than the concrete pouring speed, and the effects of shortening the construction period and improving the construction efficiency can be achieved;
2. The embedded steel plate is connected with the duct piece reinforced concrete structure through the anchor bars, the installation of the embedded steel plate is completed in the duct piece prefabrication process, the embedded steel plate can play a role in supporting the soil body on the outer side, meanwhile, a temporary waterproof structure can be formed by welding the embedded steel plate and the main line tunnel, cutting can be flexibly carried out according to the tunneling condition of the structure, and the error in the construction process is better adapted;
3. according to the utility model, the structural form of the underground passage portal pipe joint is changed, and the underground passage portal pipe joint and the underground space portal steel ring are connected through the steel structure, so that the use of steel materials for mechanically constructing the connecting passage can be reduced, the steel pipe joint in the construction of the underground passage can be saved by a conventional mechanical method, the structure is simple, the underground passage portal pipe joint can be cut as required in the construction process, the construction efficiency is effectively improved, and the construction cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic illustration of interface grouting according to the present utility model;
FIG. 3 is a schematic view of the segment structure of the present utility model;
FIG. 4 is a schematic illustration of a segment attachment according to the present utility model;
FIG. 5 is a schematic view of the connection structure of the arch and the tunnel portal at the arch bottom of the present utility model;
FIG. 6 is a schematic view of a connection structure of a door at the arch center of the present utility model;
FIG. 7 is a schematic view of a portal ring beam structure in accordance with embodiment 7 of the present utility model;
Fig. 8 is a schematic view of a segment structure in embodiment 8 of the present utility model;
FIG. 9 is a schematic view of a portal ring beam structure in accordance with embodiment 8 of the present utility model;
fig. 10 is a schematic view of a segment structure according to embodiment 9 of the present utility model;
FIG. 11 is a schematic view of a portal ring beam structure in accordance with embodiment 9 of the present utility model;
fig. 12 is a schematic structural diagram of embodiment 10 of the present utility model.
In the figure, the structure of the underground space of 1-underground, 2-portal steel rings, 5-temporary duct pieces, 6-portal duct pieces, 7-standard duct pieces, 8-grouting pipes, 9-reinforcing bodies, 10-cast-in-situ structure ring beams, 1-0 duct piece end face steel plates, 1-1 duct piece peripheral steel plates, 1-2 steel plate anchor bars, 1-3 duct piece reinforced concrete structures, 1-4 straight strip type embedded bars, 1-5 inner wall embedded plates, 2-1 connecting steel plates, 3-1 arch part connecting steel plates, 3-2 arch part steel plates, 3-3 upright column steel plates, 3-4 partition cavity filling materials, 3-5 upright column connecting steel plates and 4-1 pouring pipe joints.
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 any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to fig. 4, a prefabricated segment of an underground passage according to embodiment 1 of the present utility model includes: the temporary duct piece 5, the tunnel portal duct piece 6 and the standard duct piece 7 are sequentially connected with the embedded steel plate. The tunnel portal segments 6 are arranged at the tunnel portal of the underground space structure 1. The temporary duct piece 5 is detachably connected to one end of the tunnel portal duct piece 6 close to the tunnel portal, and is used as a duct piece structure temporarily applied in construction, the construction process of the auxiliary engineering equipment can be dismantled and recycled after tunneling in place, and the temporary duct piece can be reused in a plurality of construction projects. The standard duct piece 7 is detachably connected to the other end of the tunnel portal duct piece 6, and the standard duct piece 7 completes a lining structure of the channel through prefabrication and assembly; the standard segment 7 serves as a permanently lined segment of the subterranean passageway. The embedded steel plate is connected to the outer side of the tunnel portal duct piece 6 in an embedded mode through the embedded ribs 1-2. And the embedded steel plate is connected with the duct piece reinforced concrete structure 1-3 through the embedded ribs 1-2. In the duct piece prefabricating process, the installation of the embedded steel plate is completed, and the embedded steel plate can play a role in supporting the soil body on the outer side. Further, the tunnel portal of the underground space structure 1 is provided with the tunnel portal steel ring 2, and the tunnel portal steel ring 2 not only plays a role in temporary support and connection, but also plays a role in strengthening the structural strength of the main line tunnel. The tunnel portal pipe joint 6 can be connected with the tunnel portal steel ring 2 on the underground space structure 1 through an embedded steel plate arranged on the pipe joint. After the temporary duct piece 5 is removed, the embedded steel plate and the portal steel ring 2 are connected into a whole to play a role in water blocking. In addition, the tunnel portal steel ring 2 can be provided with a steel sleeve or a water stopping pressing plate and is welded with the steel plate 2-1.
Further, as shown in fig. 3, the pre-buried steel plate comprises a duct piece peripheral steel plate 1-1 and an end surface steel plate 1-0. Wherein the duct piece peripheral steel plate 1-1 is attached to the periphery of the tunnel portal duct piece 6, and the duct piece peripheral steel plate 1-1 extends out of the end face of the tunnel portal duct piece 6 towards the direction in the underground space structure 1. The end face steel plate 1-0 is arranged on the end face of the tunnel portal duct piece 6 facing the underground space structure 1, and the outer edge of the end face steel plate 1-0 is connected with the inner side of the duct piece peripheral steel plate 1-1. The outer edge of the end face steel plate 1-0 and the inner side of the duct piece peripheral steel plate 1-1 can be welded or can be in contact without welding, and functional requirements can be met under the condition that the end face steel plate 1-0 and the duct piece peripheral steel plate 1-1 are embedded in a concrete structure. In this embodiment, the end surface steel plate 1-0 and the duct piece peripheral steel plate 1-1 form a structure with a T-shaped cross section. The other side of the end face attaching end face steel plate 1-0 of the temporary duct piece 5 is provided, and meanwhile, the part, extending out of the end face of the tunnel portal duct piece 6, of the duct piece peripheral steel plate 1-1 is attached to the periphery of the temporary duct piece 5. In addition, as shown in fig. 4, bolt holes 3 are formed in the temporary duct piece 5, the tunnel portal duct piece 6 and the standard duct piece 7, and the temporary duct piece 5, the tunnel portal duct piece 6 and the standard duct piece 7 can be sequentially connected through bolts. And after the assembly is completed, the temporary duct piece 5 can be recovered by disassembling the bolts.
Embodiment 2 differs from embodiment 1 in that, as shown in fig. 3, the embedded ribs 1-2 are embedded in the tunnel portal duct piece 6, and the embedded ribs 1-2 are of an L-shaped structure, and two ends of the embedded ribs of the L-shaped structure are respectively connected with the end face steel plate 1-0 and the duct piece peripheral steel plate 1-1.
Embodiment 3, an interface structure of an underground passage, as shown in fig. 5 and 6, includes the prefabricated segment, and further includes a portal sealing steel plate disposed on a portal, where the portal sealing steel plate is connected with the embedded steel plate and the portal steel ring 2 to form a filling cavity of the portal sealing structure. The tunnel portal sealing steel plate comprises a connecting steel plate 2-1 connected between a tunnel portal steel ring 2 and a duct piece peripheral steel plate 1-1. Specifically, the connecting steel plate 2-1 is an annular plate, the inner side of the annular connecting steel plate 2-1 is vertically connected with one end of the duct piece periphery steel plate 1-1, which faces into the underground space structure 1, and the outer side of the connecting steel plate 2-1 is vertically connected with the portal steel ring 2. The steel plate 1-1 at the periphery of the duct piece can be connected with the steel plate 2-1 through welding to form a temporary waterproof structure with the main line tunnel. And the steel plate 1-1 on the periphery of the duct piece can be flexibly cut according to the tunneling condition of the structure, so that the error in the construction process is better adapted. According to the utility model, the structural form of the underground passage portal pipe joint is changed, and the underground passage portal pipe piece and the portal steel ring of the underground space structure are connected through the steel structure, so that the use of steel materials for mechanically constructing the connecting passage can be reduced, and the construction speed is improved.
Further, the tunnel gate closing steel plate further comprises an arch connecting steel plate 3-1 and an arch steel plate 3-2 which are arranged on the arch and/or the arch bottom. Specifically, as shown in fig. 5, one end of the arch steel plate 3-2 is vertically connected to the inner edge of the end steel plate 1-0, the other end is protruded toward the underground space structure 1 along the axial direction of the tunnel portal segment 6, and the end of the arch steel plate 3-2 is connected to one end of the tunnel portal steel ring 2 toward the inside of the underground space structure 1 through the inclined arch connection steel plate 3-1.
Embodiment 4 differs from embodiment 3 in that, as shown in fig. 6, the tunnel portal sealing steel plate further includes a column connecting steel plate 3-5 obliquely arranged at the arch, and two ends of the column connecting steel plate 3-5 are respectively connected with the segment peripheral steel plate 1-1 and one end of the tunnel portal steel ring 2 facing into the underground space structure 1. The cavity is formed by enclosing the portal steel ring 2, the connecting steel plate 2-1, the duct piece peripheral steel plate 1-1, the end surface steel plate 1-0, the arch steel plate 3-2, the arch connecting steel plate 3-1 and the upright post connecting steel plate 3-5.
Example 5, which is different from example 4 in that, as shown in fig. 5 and 6, the tunnel gate closing steel plate further includes a first pillar steel plate 3-3 and a second pillar steel plate 3-6, and the first pillar steel plate 3-3 and the second pillar steel plate 3-6 are disposed in parallel and spaced apart at the tunnel gate. Specifically, as shown in fig. 6, the outer edge of the arch part of the second pillar steel plate 3-6 is overlapped with the inner edge of the end steel plate 1-0, and the outer edges of the arch and bottom parts of the second pillar steel plate 3-6 are connected with the end of the arch steel plate 3-2 near the end of the end steel plate 1-0, thereby closing the hole.
Further, as shown in fig. 5, the outer edges of the arch crown and the arch bottom of the first upright steel plate 3-3 are connected with one end of the arch steel plate 3-2 near the arch connecting steel plate 3-1; the outer edge of the arched waist part of the first upright steel plate 3-3 is connected with the end part of the duct piece peripheral steel plate 1-1. The first upright post steel plate 3-3, the second upright post steel plate 3-6, the arch part steel plate 3-2, the end surface steel plate 1-0 and the duct piece peripheral steel plate 1-1 enclose a filling cavity of the tunnel portal.
Further, the filling cavities of the cavity door and the filling cavities of the cavity door ring beam are filled with compartment filling materials 3-4. After filling, the cavity of the cavity forms a cavity connecting structure, and the structure is a permanent connecting structure of an underground space structure and an underground passage cavity pipe joint, so that the functions of reinforcing structure connection and water resistance are achieved. In this embodiment, the compartment filling material 3-4 may be filled with grouting.
According to the utility model, the embedded steel plate arranged on the tunnel portal duct piece 6 of the underground passage can play a role in temporary support, meanwhile, the construction connection between the underground space structure and the underground passage tunnel portal duct piece is more convenient, reinforcement bar binding is not needed, the workload of site construction is reduced, the grouting filling structure cavity has a faster relative concrete pouring speed and a better quality, and the effects of shortening the construction period and improving the construction efficiency can be achieved.
Embodiment 6 is different from embodiment 3 in that, as shown in fig. 2 and 6, a grouting pipe 8 is provided in the underground space structure 1. In the present embodiment, the grouting pipe 8 is laterally disposed in the underground space structure 1 at a position close to the inside of the underground space structure 1, and one end of the grouting pipe 8 facing the outside of the underground space structure 1 is a grouting port. After the equipment tunneling in-situ prefabricated pipe joint assembling is completed, grouting is performed through grouting pipes 8, and waterproof materials are injected to the outer sides of the pipe piece peripheral steel plates 1-1 and the tunnel portal pipe pieces 6 to form a reinforcing body 9, so that groundwater is prevented from entering the underground structure through joints.
Example 7 differs from example 6 in that, as shown in fig. 7, the portal ring beam may be made of reinforced cast-in-place concrete to form a concrete cast-in-place structural ring beam 10.
In addition, the portal connection structure can also adopt a concrete cast-in-situ structure. When the concrete cast-in-situ structure is adopted, after the temporary duct piece 5 is removed, the embedded steel plate is welded with the portal steel ring 2 into a whole through the connecting steel plate 2-1, so that the water blocking effect is achieved. And then setting a concrete cast-in-situ structure on the tunnel portal of the underground space structure 1.
Example 8, which is different from example 7 in that, as shown in fig. 8 and 9, the end face steel plate 1-0 is omitted, and the duct piece peripheral steel plate 1-1 is provided on the outer periphery of the tunnel portal duct piece 6 by the straight strip type embedded ribs 1-4. In this embodiment, the portal connection structure adopts a cast-in-place structure, and the reinforcement needs to be planted in the process.
Embodiment 9 differs from embodiment 7 in that, as shown in fig. 10 and 11, the inner wall of the tunnel portal duct piece 6 is also provided with an embedded steel plate as an inner wall embedded plate 1-5, the end of the inner wall embedded plate 1-5 is connected with the end of the end surface steel plate 1-0, and two ends of the straight embedded rib 1-4 are respectively connected with the duct piece peripheral steel plate 1-1 and the inner wall embedded plate 1-5. In this embodiment, the portal connection structure also adopts a cast-in-situ structure, and the embedded bars can be connected with the steel plate.
Example 10 differs from example 3 in that, as shown in fig. 12, a casting pipe section 4-1 is provided on the side of the tunnel segment 6 close to the underground space structure 1. The pouring pipe joint 4-1 and the tunnel portal pipe joint are poured together, the duct piece support can be finished by using the grinding tool with the same specification, and the pre-buried steel plate is coated with the isolation layer so as to facilitate the later dismantling of the pouring pipe joint 4-1.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A preformed sheet of subterranean passages comprising:
the tunnel portal duct piece (6) is arranged at the tunnel portal of the underground space structure (1);
The temporary duct piece (5) is detachably connected to one end, close to the tunnel portal, of the tunnel portal duct piece (6);
The embedded steel plate is connected to the outer side of the tunnel portal duct piece (6) in an embedded mode through the embedded ribs (1-2) and is used for being connected with the tunnel portal steel ring (2) after the temporary duct piece (5) is detached.
2. The preformed sheet of subterranean passages according to claim 1, wherein: the embedded steel plate comprises a pipe piece peripheral steel plate (1-1) which is arranged on the periphery of the joint hole door pipe piece (6) and extends out of the end face of the hole door pipe piece (6) and an end face steel plate (1-0) which is arranged on the end face of the hole door pipe piece (6); the end face steel plate (1-0) and the duct piece peripheral steel plate (1-1) form a T-shaped cross section structure.
3. An interface structure of an underground passage, characterized in that: the prefabricated pipe piece according to claim 1 or 2, further comprising a tunnel portal sealing steel plate arranged on the tunnel portal, wherein the tunnel portal sealing steel plate is connected with the embedded steel plate and the tunnel portal steel ring (2) to form a filling cavity of the tunnel portal sealing structure.
4. A subterranean passageway interface structure according to claim 3, wherein: the tunnel portal sealing steel plate comprises a connecting steel plate (2-1) connected between the tunnel portal steel ring (2) and the duct piece peripheral steel plate (1-1).
5. The underground passageway interface structure of claim 4, wherein: the tunnel portal sealing steel plate further comprises an arch connecting steel plate (3-1) and an arch steel plate (3-2) which are arranged on the arch and/or the arch bottom; one end of the arch steel plate (3-2) is vertically connected with the inner edge of the end face steel plate (1-0), and the other end of the arch steel plate is connected with one end of the tunnel portal steel ring (2) facing into the underground space structure (1) through the arch connecting steel plate (3-1).
6. The underground passageway interface structure of claim 5, wherein: the tunnel portal sealing steel plate further comprises a vertical column connecting steel plate (3-5) arranged on the arch, two ends of the vertical column connecting steel plate (3-5) are respectively connected with one end, facing the underground space structure (1), of the tunnel portal steel ring (2), the connecting steel plate (2-1), the tunnel portal steel ring (1-1), the end face steel plate (1-0), the arch steel plate (3-2), the arch connecting steel plate (3-1) and the vertical column connecting steel plate (3-5) to form a filling cavity of the tunnel portal ring beam.
7. The underground passage interface structure according to claim 6, wherein the tunnel portal closing steel plate comprises a second pillar steel plate (3-6) provided at the tunnel portal, and the outer edge of the second pillar steel plate (3-6) is connected with the inner edge of the end surface steel plate (1-0) and/or the end of the arch steel plate (3-2).
8. The underground tunnel junction structure according to claim 7, wherein the tunnel closure steel plate further comprises a first pillar steel plate (3-3) arranged parallel to and spaced apart from the second pillar steel plate (3-6), and wherein the dome and/or dome bottom portion of the first pillar steel plate (3-3) is connected to the end portion of the dome steel plate (3-2); the arched waist part of the first upright steel plate (3-3) is connected with the end part of the duct piece peripheral steel plate (1-1) so that the first upright steel plate (3-3), the second upright steel plate (3-6), the arch steel plate (3-2), the end surface steel plate (1-0) and the duct piece peripheral steel plate (1-1) form a filling cavity of the tunnel portal.
9. The underground passageway interface structure of claim 8, wherein: and the filling cavities of the cavity and/or the cavity ring beams of the cavity are filled with a cavity filling material (3-4) or concrete is poured.
10. The interface structure of an underground passage according to any one of claims 3 to 9, wherein: the underground space structure (1) is internally provided with a grouting pipe (8) for injecting waterproof materials to the outer side of the embedded steel plate and/or the tunnel portal duct piece (6) to form a reinforcing body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322601659.XU CN220909706U (en) | 2023-09-25 | 2023-09-25 | Prefabricated segment and interface structure of underground passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322601659.XU CN220909706U (en) | 2023-09-25 | 2023-09-25 | Prefabricated segment and interface structure of underground passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220909706U true CN220909706U (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322601659.XU Active CN220909706U (en) | 2023-09-25 | 2023-09-25 | Prefabricated segment and interface structure of underground passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220909706U (en) |
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2023
- 2023-09-25 CN CN202322601659.XU patent/CN220909706U/en active Active
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