CN116066167B - Assembled subway station wind channel structure - Google Patents
Assembled subway station wind channel structure Download PDFInfo
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- CN116066167B CN116066167B CN202310354637.XA CN202310354637A CN116066167B CN 116066167 B CN116066167 B CN 116066167B CN 202310354637 A CN202310354637 A CN 202310354637A CN 116066167 B CN116066167 B CN 116066167B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/18—Gravity flow ventilation
Abstract
The invention discloses an assembled subway station air duct structure, which belongs to the technical field of urban rail transit and consists of an air duct frame section positioned underground and a vertical air shaft section extending out of the ground; the air duct frame section comprises a prefabricated column, a prefabricated superposed beam, a prefabricated superposed floor slab and a prefabricated wall; the prefabricated wall is surrounded to form a frame structure with an open top; the prefabricated columns are distributed in a matrix form and positioned in the frame structure; the prefabricated composite floor slab is arranged on the top of a frame structure surrounded by the prefabricated walls through prefabricated composite Liang Pingpu to form a top floor slab; pouring concrete on the top floor slab to form a prefabricated column, a prefabricated superposed beam and a prefabricated superposed slab into a whole; the integral top is reserved with a mounting hole; the vertical wind shaft section is arranged on the installation hole, the vertical wind shaft section is split into a plurality of prefabricated annular sections along the direction vertical to the ground, and the prefabricated annular sections are integrated through a mortise-tenon structure and finish rolling deformed steel bars; the invention can shorten the construction period, improve the engineering quality and reduce the operation intensity.
Description
Technical Field
The invention belongs to the technical field of urban rail transit, and particularly relates to an assembled subway station air duct structure.
Background
With the continuous improvement of urban level and the rapid population growth of China, urban traffic is increasingly crowded. The subway is taken as one of convenient public transportation modes, so that the urban traffic pressure can be effectively relieved, and the subway gradually becomes an important development direction of urban public transportation. At present, the traditional subway station construction mostly adopts construction modes such as an open excavation method, a cover excavation method, a shallow buried and underground excavation method and the like, and a main body structure is required to be cast in situ, so that the problems of large wet work load, long construction period, serious environmental pollution and the like of site construction are caused.
Along with the continuous development of building industrialization technology, the assembly type building technology is gradually applied to the field of underground engineering, subway construction is carried out by adopting the assembly type technology, on-site assembly prefabrication is realized, the engineering quality can be comprehensively improved, the construction speed is increased, the influence on urban ground traffic is shortened, and the requirements of urban underground engineering on high efficiency and environmental protection are met. However, the existing assembly type construction technology is mostly applied to the construction of main structures of subway stations, traditional cast-in-situ technology is still adopted in auxiliary structures such as subway station air ducts, and due to the fact that the construction operation space of the station air ducts is small, the construction progress of the station air ducts is low, the operation quality is not easy to guarantee, excessive underground wet operation and narrow operation surfaces are achieved, dust in the closed space endangers the health of operators, and excessive supports and templates increase safety risks.
Disclosure of Invention
In view of the above, the invention provides an assembled subway station air duct structure, which can shorten the construction period, improve the engineering quality and reduce the operation intensity.
The invention is realized by the following technical scheme:
an assembled subway station air channel structure consists of an air channel frame section positioned underground and a vertical air shaft section extending out of the ground;
the air duct frame section comprises a prefabricated column, a prefabricated superposed beam, a prefabricated superposed floor slab and a prefabricated wall;
the prefabricated columns and the prefabricated walls are fixedly connected with the cast-in-situ bottom plate through grouting sleeves, and the prefabricated walls enclose an open-top frame structure; a plurality of prefabricated columns are distributed in a matrix form and positioned in the frame structure;
the plurality of prefabricated superposed beams are distributed into more than two support beam structures, each support beam structure is formed by sequentially butting more than two prefabricated superposed beams, and any two adjacent prefabricated superposed beams are butted at the prefabricated columns; the prefabricated superposed beam and the prefabricated column are connected through cast-in-situ joints;
the plurality of prefabricated composite floors are arranged on the top of a frame structure surrounded by prefabricated walls through prefabricated composite Liang Pingpu to form a top floor; the prefabricated composite floor slab is connected with the prefabricated composite beam through the composite cast-in-situ part;
pouring concrete on the upper surface of the top floor slab to form a cast-in-situ layer, so that the prefabricated column, the prefabricated superposed beam and the prefabricated superposed floor slab form a whole; a plurality of mounting holes are reserved on the integral top;
the vertical wind shaft section is installed on the installation hole, the vertical wind shaft section is split into a plurality of prefabricated annular sections along the vertical ground direction, and the prefabricated annular sections are longitudinally spliced through the mortise and tenon structures and are connected through finish rolling deformed steel bars in a tensioning mode to form a whole.
Furthermore, the bottom and the top of the prefabricated wall are provided with staggered platforms.
Further, the brackets are respectively arranged on the two sides of each prefabricated composite beam, the length of each bracket is equal to the distance between the central lines of two adjacent prefabricated columns, and the two ends of each prefabricated composite floor slab are respectively lapped at the brackets of the prefabricated composite beams.
Further, a plurality of superimposed sheet stiffening ribs along the width direction of the subway air duct are arranged on the lower surface of the prefabricated superimposed floor slab, a plurality of reinforcing steel bars along the width direction of the subway air duct are arranged inside the prefabricated superimposed floor slab, the reinforcing steel bars extend out of the prefabricated superimposed floor slab, and the reinforcing steel bars can extend out of the central line of the prefabricated superimposed beam; and when two adjacent prefabricated composite floor slabs are butted, the steel bars at the contact part between the two prefabricated composite floor slabs do not extend outwards, and are connected in a closely spliced mode.
Furthermore, the installation hole is rectangular, and at least one side of the installation hole is a prefabricated wall; the prefabricated ring-shaped section matched with the mounting hole is a rectangular ring.
Further, mortise structures are respectively arranged at two end faces of each prefabricated annular section, mortises are arranged at the bottoms of the prefabricated annular sections, and tenons are arranged at the tops of the prefabricated annular sections; the tenon cross section is a rectangular boss, and the mortise is matched with the tenon in shape.
Further, each prefabricated annular section is internally provided with a reserved hole of the finish rolling deformed steel bar along the direction vertical to the ground and the finish rolling deformed steel bar penetrating through the reserved hole; after a plurality of prefabricated annular sections are longitudinally spliced through the mortise and tenon joint structure, the prefabricated annular sections are connected through finish rolling deformed steel bars to form a whole, the reserved holes are formed in the mortise and tenon joint structure of the prefabricated annular sections, and the distance between any two adjacent reserved holes on each prefabricated annular section is not more than 1.5m.
Further, when the vertical wind shaft section is connected with the installation hole along the direction vertical to the ground, finish rolling deformed steel bars and tenons are reserved on the upper surface of the cast-in-situ layer where the installation hole is positioned and the top of the prefabricated wall, mortises and finish rolling deformed steel bars of the prefabricated annular section at the bottommost part of the vertical wind shaft section are adjusted, so that the tenons of the cast-in-situ layer or the prefabricated wall are matched with the mortises of the prefabricated annular section, and simultaneously, the finish rolling deformed steel bars of the cast-in-situ layer or the prefabricated wall are tensioned and anchored with the finish rolling deformed steel bars of the prefabricated annular section.
Further, waterproof strips are arranged on the butt joint surfaces between the adjacent prefabricated annular sections and the butt joint surfaces between the prefabricated annular sections and the cast-in-situ layer or the prefabricated wall, and waterproof coiled materials are adhered to the outer sides of the waterproof strips.
The beneficial effects are that:
(1) According to the invention, the subway air duct structure is split into the prefabricated annular sections, the prefabricated superposed beams, the prefabricated columns and other components according to the characteristics of the subway air duct structure, so that the self weight is small, the prefabricated and standardized production can be performed in advance, and the production, transportation and hoisting difficulties of the components are greatly reduced; the construction period is shortened through prefabrication of components in advance and assembly construction of construction sites, the engineering quality is improved, the operation intensity is reduced, the environmental pollution is reduced, and the green construction level in the urban rail transit field is improved, so that the sustainable development requirements of high efficiency, energy conservation and environmental protection are met; the subway wind shaft structure and the air duct frame structure are split into a plurality of prefabricated components from the aspects of component prefabrication feasibility and construction convenience, and the reliability of structural stress is comprehensively considered, the components are provided with a plurality of sizes and specifications, and single size or a plurality of size combinations can be flexibly selected according to different on-site construction hoisting conditions, so that the difficulty in production, transportation and hoisting of the components is greatly reduced.
(2) The staggered platform is arranged at the bottom of the prefabricated wall, so that the infiltration of external water is effectively reduced; the staggered platform is arranged at the top, so that external water is prevented from penetrating, the composite floor slab is convenient to install, and the composite floor slab can be used as an upper cast-in-situ part template.
(3) The brackets are respectively arranged on the two sides of the prefabricated laminated beam, the structural stress is reasonable, the appearance is attractive, the connection construction difficulty between the laminated slab and the beam column is greatly reduced, and the reliability is high.
(4) The lower surface of the prefabricated composite floor slab is provided with a plurality of composite slab stiffening ribs, so that the structural stress is reasonable, and the consumption of reinforcing steel bars is reduced; meanwhile, ribs are not arranged on two adjacent sides of the prefabricated composite floor slab, and the prefabricated composite floor slab is connected in a closely spliced mode, so that the construction difficulty of the composite floor slab is effectively reduced.
(5) The adjacent prefabricated annular sections of the vertical wind shaft structure are buckled through the mortise and tenon structures and are connected through the finish rolling deformed steel bars, so that the structure connection is reliable, and most of the vertical wind shaft structure is constructed in a dry mode, the labor intensity is remarkably reduced, the operation environment is effectively improved, and the environmental pollution is reduced; and the tenon of the mortise and tenon structure is arranged on the lower component, so that water is not easy to accumulate.
(6) The waterproof strips are arranged on the butt joint surfaces between the adjacent prefabricated annular sections and the butt joint surfaces between the prefabricated annular sections and the cast-in-situ layer or the prefabricated wall, waterproof coiled materials are adhered to the outer sides of the prefabricated annular sections, the waterproof performance is good, and the use requirements can be met.
Drawings
FIG. 1 is a schematic diagram of the overall split structure of the air duct of the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
FIG. 4 is a schematic view of the structure and connection of prefabricated ring segments of a vertical wind shaft section.
Fig. 5 is a block diagram of a single prefabricated ring segment.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a schematic structural view of a prefabricated composite floor slab.
Fig. 8 is a left side view of fig. 7.
Fig. 9 is a schematic view of the structure of the prefabricated wall.
Fig. 10 is a schematic view of the structure and connection of a prefabricated composite beam.
Fig. 11 is a schematic cross-sectional view of a prefabricated composite beam.
The steel plate comprises a 1-prefabricated annular section, a 2-reserved hole, a 3-finish rolling screw steel, a 4-prefabricated column, a 5-prefabricated superposed beam, a 6-prefabricated superposed floor slab, a 7-prefabricated wall, an 8-cast-in-situ bottom plate, a 9-cast-in-situ layer, a 10-superposed plate stiffening rib, 11-steel bars, 12-ground beams and 13-ground.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The embodiment provides an assembled subway station air duct structure, which is shown in figures 1-3, and consists of an air duct frame section positioned underground and a vertical air shaft section extending out of the ground 13;
the air duct frame section comprises prefabricated columns 4, prefabricated superposed beams 5, prefabricated superposed floor slabs 6 and prefabricated walls 7;
the prefabricated walls 7 are fixed on a cast-in-situ bottom plate 8 at the bottom of a pre-pit of the subway air channel along the direction vertical to the ground 13, the prefabricated walls 7 are arranged along the inner wall surface of the pre-pit, and the prefabricated walls 7 enclose an open-top frame structure, namely the outer contour of the subway air channel; as shown in fig. 9, the bottom and the top of the prefabricated wall 7 are provided with staggered platforms for improving the waterproof performance and serving as concrete pouring templates; in the embodiment, the bottom of the prefabricated wall 7 is staggered, the height of the prefabricated wall is 100mm, and the height of the prefabricated wall is lower than the height of the prefabricated wall; the top of the prefabricated wall 7 is staggered to be high outside and low inside, and the height difference is 800mm;
the prefabricated columns 4 are distributed in a matrix form and are positioned in a frame structure formed by surrounding the prefabricated walls 7 to form a top and at the butt joint positions of the prefabricated walls 7, the bottoms of the prefabricated columns 4 are fixed on the cast-in-situ bottom plate 8 through the ground beams 12, and the prefabricated columns 4 are arranged along the direction vertical to the ground 13; wherein the prefabricated column 4, the prefabricated wall 7 and the cast-in-situ bottom plate 8 are connected through grouting sleeves;
the prefabricated superposed beams 5 are distributed into more than two support beam structures along the length direction of the subway air duct, each support beam structure is formed by sequentially butting more than two prefabricated superposed beams 5, any two adjacent prefabricated superposed beams 5 are butted at the prefabricated columns 4, the prefabricated superposed beams 5 are further fixed on the prefabricated columns 4, and the prefabricated columns 4 and the prefabricated superposed beams 5 are connected through cast-in-situ nodes; as shown in fig. 10-11, brackets are respectively arranged on two sides of each prefabricated laminated beam 5, the length of each bracket is equal to the distance between the central lines of two adjacent prefabricated columns 4, so that the subsequent prefabricated laminated floor slab 6 can be conveniently overlapped and can be used as a template of a beam column node cast-in-place part; in this embodiment, the prefabricated laminated beam 5 has a dimension of 250mm wide and 600mm high.
The prefabricated composite floor slabs 6 are tiled on the top of a frame structure surrounded by the prefabricated walls 7 through prefabricated composite beams 5, and the top of the frame structure is closed to form a top floor slab; wherein, both ends of each prefabricated composite floor slab 6 are respectively lapped at corbels of the prefabricated composite beam 5, and the prefabricated composite floor slabs 6 are connected with the prefabricated composite beam 5 through the composite cast-in-situ part; as shown in fig. 7-8, the prefabricated composite floor slab 6 eliminates the traditional truss rib, a plurality of composite slab stiffening ribs 10 along the width direction of the subway air channel are arranged on the lower surface of the prefabricated composite floor slab 6, a plurality of reinforcing steel bars 11 along the width direction of the subway air channel are arranged inside the prefabricated composite floor slab 6, the reinforcing steel bars 11 extend out of the prefabricated composite floor slab 6, and the reinforcing steel bars 11 can extend out to the central line of the prefabricated composite beam 5; when two adjacent prefabricated composite floor slabs 6 are butted, the steel bars at the contact part between the two prefabricated composite floor slabs 6 do not extend outwards, and are connected in a closely spliced mode; in this embodiment, the laminated stiffening ribs 10 are 200mm wide and 400mm high and have a center-to-center spacing of 600mm.
Pouring concrete on the upper surfaces of top floors formed by the prefabricated composite floor slabs 6 to form a cast-in-situ layer 9, so that the prefabricated columns 4, the prefabricated composite beams 5 and the prefabricated composite floor slabs 6 are integrated, and the height of the cast-in-situ layer 9 is equal to the height of the prefabricated wall 7 (namely, the upper surface of the cast-in-situ layer 9 is equal to the top surface of the prefabricated wall 7); a plurality of mounting holes for mounting the vertical wind shaft section are reserved at the top of the whole body; each installation hole is correspondingly provided with a vertical wind shaft section, and in the embodiment, the installation hole is rectangular, and at least one side of the installation hole is a prefabricated wall 7;
as shown in fig. 4-5, the vertical wind shaft section is installed on the installation hole along the direction of the vertical ground 13, and is formed by sequentially and coaxially butting a plurality of prefabricated annular sections 1 along the direction of the vertical ground 13, namely, the vertical wind shaft section is split into a plurality of prefabricated annular sections 1 along the direction of the vertical ground 13, and the vertical wind shaft section can be split into 1m, 1.5m and 2m prefabricated annular sections 1 according to different specifications and sizes of the vertical wind shaft; in the embodiment, the vertical wind shaft section is split into 3 sections, the height of each prefabricated annular section 1 is 1.5m, and each prefabricated annular section 1 is a rectangular ring;
the two end surfaces of each prefabricated annular section 1 are respectively provided with a concave-convex mortise structure, namely, the bottom of each prefabricated annular section 1 is provided with a mortise, and the top of each prefabricated annular section 1 is provided with a tenon; the section of the tenon is a rectangular boss, and the mortise is matched with the tenon in shape; in the embodiment, the height of the rectangular boss is 100mm, and the width is 350mm;
a reserved hole 2 of the finish rolling deformed steel bar and a finish rolling deformed steel bar 3 penetrating through the reserved hole 2 are arranged in each prefabricated annular section 1 along the direction vertical to the ground 13; after the plurality of prefabricated annular sections 1 are longitudinally spliced (i.e. coaxially butted) through the mortise-tenon joint structure, and are connected through finish rolling deformed steel bars 3 to form a whole, as shown in fig. 6, the reserved holes 2 are arranged on the mortise-tenon joint structure of the prefabricated annular sections 1, 2 circles are reserved in the upper and lower centers of the rectangular bosses, one of the four corners is respectively arranged, the rest of the four corners are uniformly arranged according to the length of each side, and the distance between any two adjacent reserved holes 2 on each prefabricated annular section 1 is not more than 1.5m;
when the vertical wind shaft section is connected with the installation hole along the direction of the vertical ground 13, finish rolling deformed steel bars 3 and tenons are reserved on the upper surface of the cast-in-situ layer 9 where the installation hole is positioned and the top of the prefabricated wall 7, the mortises and the finish rolling deformed steel bars 3 of the prefabricated annular section 1 at the bottommost part of the vertical wind shaft section are adjusted, the tenons of the cast-in-situ layer 9 or the prefabricated wall 7 are matched with the mortises of the prefabricated annular section 1, and simultaneously the finish rolling deformed steel bars 3 of the cast-in-situ layer 9 or the prefabricated wall 7 are tensioned and anchored with the finish rolling deformed steel bars 3 of the prefabricated annular section 1, so that the prefabricated annular section 1 is tightly meshed with the reinforcing steel bar sleeve of the finish rolling deformed steel bars 3 of the cast-in-situ layer 9 or the prefabricated wall 7 under the action of dead weight;
the waterproof strips are arranged on the butt joint surfaces between the adjacent prefabricated annular sections 1 and the butt joint surfaces between the prefabricated annular sections 1 and the cast-in-situ layer 9 or the prefabricated wall 7, waterproof coiled materials are adhered to the outer sides, the integral waterproof performance of the structure is improved, and the construction is convenient and reliable.
When the assembled subway station air duct structure is assembled, firstly, on a finished foundation (namely, a pre-pit is dug and a cast-in-situ bottom plate 8 is formed at the bottom of the pit), a precast column 4 and a precast wall 7 are connected with the cast-in-situ bottom plate 8 through a grouting sleeve process; secondly, hoisting a prefabricated superposed beam 5, and overlapping two ends of the prefabricated superposed beam 5 on the tops of adjacent prefabricated columns 4 and fixing the prefabricated superposed beam by temporary supports; the prefabricated composite floor slab 6 is hoisted immediately, two ends of the prefabricated composite floor slab 6 are lapped at bracket positions of the prefabricated composite beam 5, steel bars of the prefabricated composite floor slab 6 extend outwards to the central line of the prefabricated composite beam 5, and a close splicing mode is adopted between two adjacent prefabricated composite floor slabs 6; then casting concrete on the upper surface of the prefabricated composite floor slab 6 to form a cast-in-situ layer 9, integrating the prefabricated column 4, the prefabricated composite beam 5 and the prefabricated composite floor slab 6, and reserving finish rolling screw thread steel 3 and tenons at the contact position of the vertical wind well section; then constructing a vertical wind well section, adjusting the positions of mortises of the prefabricated annular sections 1 and the reserved holes 2 through a crane, enabling the mortises of the cast-in-situ layer 9 or the prefabricated wall 7 to be matched with the mortises of the prefabricated annular sections 1, and enabling the finish rolling deformed steel bars 3 of the cast-in-situ layer 9 or the prefabricated wall 7 to be tensioned and anchored with the finish rolling deformed steel bars 3 of the prefabricated annular sections 1; finally, a waterproof strip is arranged at the mortise and tenon joint position, waterproof coiled materials are adhered to the outer side, and then the process is circulated until all sections are assembled, and the connection of the whole structure is completed.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The air duct structure of the assembled subway station is characterized by comprising an air duct frame section positioned underground and a vertical air shaft section extending out of the ground;
the air duct frame section comprises a prefabricated column, a prefabricated superposed beam, a prefabricated superposed floor slab and a prefabricated wall;
the prefabricated columns and the prefabricated walls are fixedly connected with the cast-in-situ bottom plate through grouting sleeves, and the prefabricated walls enclose an open-top frame structure; a plurality of prefabricated columns are distributed in a matrix form and positioned in the frame structure;
the plurality of prefabricated superposed beams are distributed into more than two support beam structures, each support beam structure is formed by sequentially butting more than two prefabricated superposed beams, and any two adjacent prefabricated superposed beams are butted at the prefabricated columns; the prefabricated superposed beam and the prefabricated column are connected through cast-in-situ joints;
the plurality of prefabricated composite floors are arranged on the top of a frame structure surrounded by prefabricated walls through prefabricated composite Liang Pingpu to form a top floor; the prefabricated composite floor slab is connected with the prefabricated composite beam through the composite cast-in-situ part;
pouring concrete on the upper surface of the top floor slab to form a cast-in-situ layer, so that the prefabricated column, the prefabricated superposed beam and the prefabricated superposed floor slab form a whole; a plurality of mounting holes are reserved on the integral top;
the vertical wind shaft section is installed on the installation hole, the vertical wind shaft section is split into a plurality of prefabricated annular sections along the vertical ground direction, and the prefabricated annular sections are longitudinally spliced through the mortise and tenon structures and are connected through finish rolling deformed steel bars in a tensioning mode to form a whole.
2. The assembled subway station air duct structure of claim 1, wherein the bottom and the top of the prefabricated wall are provided with staggered platforms.
3. The assembled subway station air duct structure of claim 1, wherein brackets are respectively arranged on two sides of each prefabricated composite beam, the length of each bracket is equal to the distance between the central lines of two adjacent prefabricated columns, and two ends of each prefabricated composite floor slab are respectively arranged at the brackets of the prefabricated composite beams.
4. A prefabricated subway station air duct structure according to any one of claims 1-3, wherein a plurality of superimposed sheet stiffening ribs along the width direction of the subway air duct are arranged on the lower surface of the prefabricated superimposed floor slab, a plurality of reinforcing bars along the width direction of the subway air duct are arranged inside the prefabricated superimposed floor slab, the reinforcing bars extend out of the prefabricated superimposed floor slab, and the reinforcing bars extend out of the central line of the prefabricated superimposed beam; and when two adjacent prefabricated composite floor slabs are butted, the steel bars at the contact part between the two prefabricated composite floor slabs do not extend outwards, and are connected in a closely spliced mode.
5. A fabricated subway station wind tunnel structure according to any one of claims 1-3 wherein said mounting openings are rectangular and at least one side of said mounting openings is a prefabricated wall; the prefabricated ring-shaped section matched with the mounting hole is a rectangular ring.
6. A fabricated subway station wind tunnel structure according to any one of claims 1-3, wherein a mortise is provided at the bottom of each prefabricated annular section, and a tenon is provided at the top of each prefabricated annular section; the tenon cross section is a rectangular boss, and the mortise is matched with the tenon in shape.
7. The assembled subway station air duct structure according to claim 6, wherein each prefabricated annular segment is internally provided with a reserved hole of finish-rolled deformed steel bar along the vertical ground direction and a finish-rolled deformed steel bar penetrating through the reserved hole; after a plurality of prefabricated annular sections are longitudinally spliced through the mortise and tenon joint structure, the prefabricated annular sections are connected through finish rolling deformed steel bars to form a whole, the reserved holes are formed in the mortise and tenon joint structure of the prefabricated annular sections, and the distance between any two adjacent reserved holes on each prefabricated annular section is not more than 1.5m.
8. The assembled subway station air duct structure according to claim 7, wherein when the vertical air shaft section is connected with the installation hole along the vertical ground direction, finish rolling threaded steel and tenons are reserved on the upper surface of the cast-in-situ layer where the installation hole is located and the top of the prefabricated wall, mortises and finish rolling threaded steel of the prefabricated annular section at the bottommost part of the vertical air shaft section are adjusted, the tenons of the cast-in-situ layer or the prefabricated wall are matched with mortises of the prefabricated annular section, and simultaneously the finish rolling threaded steel of the cast-in-situ layer or the prefabricated wall is tensioned and anchored with the finish rolling threaded steel of the prefabricated annular section.
9. A fabricated subway station wind tunnel structure according to any one of claims 1 to 3, wherein waterproof strips are provided on the abutting surfaces between adjacent prefabricated ring segments and between the prefabricated ring segments and the cast-in-situ layer or prefabricated wall, and waterproof coiled materials are adhered on the outer sides.
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| CN202310354637.XA CN116066167B (en) | 2023-04-06 | 2023-04-06 | Assembled subway station wind channel structure |
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| CN202310354637.XA CN116066167B (en) | 2023-04-06 | 2023-04-06 | Assembled subway station wind channel structure |
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| JPH11141299A (en) * | 1997-11-13 | 1999-05-25 | Kajima Corp | Connection part reinforcing method for fastener connection wind pipe |
| CN105178357A (en) * | 2015-07-16 | 2015-12-23 | 中国建筑股份有限公司 | Prefabricated subsurface structure under foundation trench open cutting condition and construction method for prefabricated subsurface structure under foundation trench open cutting condition |
| CN204940808U (en) * | 2015-09-15 | 2016-01-06 | 上海朗诗规划建筑设计有限公司 | A kind of prefabricated new ventilating shaft |
| CN107476341A (en) * | 2017-08-21 | 2017-12-15 | 中铁六局集团有限公司 | Using cast in place and precast construction subway station prefabricated board assembling method |
| CN109989554A (en) * | 2019-05-09 | 2019-07-09 | 赵金明 | A kind of skyscraper assembled piping shaft and preparation method thereof and installation method |
| CN114775952A (en) * | 2022-05-18 | 2022-07-22 | 济南一建集团有限公司 | Inside pre-buried formula air pipe of energy-saving building |
| CN115596491A (en) * | 2022-11-01 | 2023-01-13 | 华能铜川照金煤电有限公司西川煤矿分公司（Cn） | Mine ventilation unit is used in mine safety production |
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