CN212656260U - Assembled rail top air duct structure of underground station - Google Patents
Assembled rail top air duct structure of underground station Download PDFInfo
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- CN212656260U CN212656260U CN202020650063.2U CN202020650063U CN212656260U CN 212656260 U CN212656260 U CN 212656260U CN 202020650063 U CN202020650063 U CN 202020650063U CN 212656260 U CN212656260 U CN 212656260U
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- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 33
- 239000004567 concrete Substances 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 8
- 238000009415 formwork Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000002787 reinforcement Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to an assembled rail top air channel structure of an underground station, wherein a horizontal beam and a vertical air channel web plate are arranged at the inner side of a structure side wall and below a structure middle plate; the inner side of the cross beam is connected to the structural side wall through a bracket, the outer side of the cross beam is connected to the bottom of the air duct web plate through a wing foot, and the top of the air duct web plate is connected to the structural middle plate through an embedded anchor bolt; an air duct plate is arranged above the cross beam, and an air duct structure is formed by the structure side wall, the structure middle plate, the air duct plate and the air duct web plate. The utility model utilizes the bolt type anchor bolt and the bracket to effectively fix the beam and the air duct plate, and changes the connection mode of the conventional cast-in-place air duct structure based on the bar planting and the main structure into an assembly component with the mechanical interlock of the bolt and the clamping and fixing of the bracket, thereby realizing the novel assembly type rail top air duct with rapid on-site installation and reliable connection; the stress characteristic between new and old structures is improved, the problems of a large number of formwork supports and concrete pumping related to the in-situ concrete pouring of the air duct structure are solved, and the construction benefit is improved.
Description
Technical Field
The utility model belongs to the technical field of underground works, concretely relates to station assembled railhead wind channel structure underground.
Background
With the rapid development of economy, in order to guide the reasonable layout and the orderly development of cities, the urban health development is guided through rail transit, and peripheral businesses, houses, entertainment, medical treatment, education and the like are effectively connected in series by taking rail transit stations as base points to form a new pattern of station-city integrated development, so that the station-city integrated development system is a new thought and guideline for rail transit construction of various cities in recent years. Therefore, in the process of building the rail transit station, the surrounding environment conditions are more and more harsh, the on-site chiseling and breaking construction should be reduced or avoided to the greatest extent, and the safe, quick and energy-saving new and old structure connection process should be realized based on the green and environment-friendly concept.
The connection of new and old structure, the interface connection mode based on the bar planting is leading to be unreasonable, has too much existing structure to chisel or abolish the construction in the connection process simultaneously, leads to the excessive damage of interface position, has interface seepage, crack and the risk of deformation in the later stage use, influences the normal use of component, probably endangers structure self even and all ring edge borders safety. In recent years, with the further acceleration of urban construction speed and the reconstruction and expansion construction of existing structures, the problem of connection between an early-built structure and a later-built structure is increasingly emphasized, in particular, with the development of station-city integration (or TOD) based on rail transit, various types of side-connection construction of urban rail transit are more and more common, various types of construction or later-built engineering based on the built structure are continuously developed, the structural form of an interface part of a new structure and the structural connection mode of the interface part of the old structure and the existing structure restrict the implementation of the construction or later-built engineering to a certain extent, and even become a control factor of underground engineering under certain conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a brand-new station assembled railhead wind channel structure in the new railhead wind channel of having built underground structure side wall and medium plate contained angle position, the wind channel board is mainly supported by the below crossbeam, the crossbeam supports on both ends bracket, one side bracket is pour with the underground structure side wall in step, other end bracket is pour with the wind channel web in step, form the wind channel web of taking bracket type wing foot, adopt bayonet crab-bolt mechanical connection between wind channel web and the underground structure medium plate simultaneously. The mechanical connection is changed from the bar-planting connection between the conventional new and old structures, and meanwhile, the cast-in-place air duct structure of the subway station is changed into a prefabricated part, so that only assembly is needed on site, the construction efficiency is improved, the site implementation difficulty is reduced, and the engineering quality is improved.
The utility model discloses the technical scheme who adopts does:
the utility model provides an underground station assembled rail top wind channel structure which characterized in that:
arranging a horizontal beam and a vertical air duct web plate on the inner side of the structural side wall and below the structural middle plate; the inner side of the cross beam is connected to the side wall of the structure through a bracket, the outer side of the cross beam is connected to the bottom of the air duct web plate through a wing foot, and the top of the air duct web plate is connected to the middle plate of the structure through an anchor bolt;
an air duct plate is arranged above the cross beam, and a rail top air duct structure is formed by the structure side wall, the structure middle plate, the air duct plate and the air duct web plate.
The inner wall of the structure side wall is provided with a side wall bracket, the side wall bracket and the structure side wall are integrally poured, and the inner side of the beam is placed on the side wall bracket.
The top surface of the side wall bracket is provided with convex teeth, the bottom surface of the corresponding cross beam is provided with a groove, and the convex teeth of the side wall bracket are inserted into the groove of the cross beam to assemble the component.
The bottom of the air duct web plate is provided with wing feet extending towards the inner side, the wing feet are bracket-shaped wing feet, and the bracket-shaped wing feet and the air duct web plate are integrally cast.
The top surface of the bracket-shaped wing foot is provided with convex teeth, the bottom surface of the corresponding cross beam is provided with a groove, and the convex teeth of the bracket-shaped wing foot are inserted into the groove of the cross beam to assemble the components.
The top end of the air duct web plate is fixed to the structural middle plate through a bolt type anchor bolt.
The bolt type anchor bolt comprises an embedded sleeve and a plug type anchor bolt;
the pre-embedded sleeve is pre-embedded in the structural middle plate in advance and internally provided with threads; the bottom of the embedded sleeve is provided with a wing foot which is in a horn shape;
the plug-in anchor bolt is pre-embedded in the air duct web in advance, and the outer part of the plug-in anchor bolt is in a threaded shape; the bottom end of the plug-in anchor bolt is provided with an anchor bolt expanding head.
The cross beams are arranged at certain intervals along the longitudinal direction of the air duct and correspond to the number and the positions of the side wall brackets and the bracket-shaped wing feet.
A plurality of air duct plates are longitudinally arranged above the cross beam along the air duct, the front end and the rear end of each air duct plate are respectively lapped on the cross beam at the corresponding position, and gaps between the adjacent air duct plates are trowelled by mortar.
The utility model has the advantages of it is following:
the utility model provides a novel subway station rail top wind channel assembled construction method has richened current subway station rail top wind channel construction method. The supporting bracket, the air duct cross beam, the air duct web plate with the bracket-shaped wing foot and the like are all of conventional reinforced concrete structures, the bolt-type anchor bolts for connecting the air duct web plate and the underground structure middle plate are all conventional steel members, the construction process is mature, and the related template for concrete pouring, steel for the bolt-type anchor bolts, the sleeve and other auxiliary facilities are conventional equipment; the reinforcing steel bars, the waterproof concrete, the templates and the like adopted by the air duct web plate for supporting the bracket, the air duct cross beam and the bracket-shaped wing feet are all conventional materials, the design size of the air duct web plate is conventional, and the air duct web plate is simple and easy to manufacture. The size of the bracket at the two ends of the cross beam below the air duct plate and the lap width of the cross beam can be flexibly determined according to the size and weight factors of the air duct plate, and the bolt type anchor bolts are used for connecting the air duct web plate and the structural middle plate, the depth of the embedded sleeve in the structural middle plate, the length of the expanded head at the bottom of the bolt type anchor bolts, the number of the bolt type anchor bolts at the top of each air duct plate and the like can be flexibly adjusted according to the weight of the air duct web plate. The problem of on-site quick installation of the assembled rail top air duct is solved, and the economic and technical benefits are remarkable.
With the bracket that underground structure side wall was pour in step, pre-buried bolt formula crab-bolt on underground structure medium plate has effectively solved the later stage connection problem of the prefabricated assembled structure in station rail top wind channel, has realized the on-the-spot quick installation, the purpose of reliable connection, has effectively released original concrete structure founds the mould casting construction occupation time overlength, new and old structure bar planting connection reliability not enough and to the obvious defect of existing structural damage, and the at utmost has satisfied the on-the-spot quick construction, the demand of process seamless connection around. The utility model discloses have higher economic benefits and social, have extensive application prospect in underground structure engineering such as urban rail transit, municipal highway, civil buildings.
Drawings
Fig. 1 is a cross-sectional view of a novel fabricated rail top duct of a station.
FIG. 2 is a plan view (A-A cross section) of the rail-top duct.
Fig. 3 is a perspective view of a bolt-type anchor bolt.
In the figure, 1-structural side wall, 2-structural middle plate, 3-side wall bracket, 4-air duct web, 5-bracket type wing foot, 6-beam, 7-air duct plate, 8-bolt type anchor bolt, 9-embedded sleeve, 10-sleeve wing foot, 11-plug type anchor bolt and 12-anchor bolt expanding head.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to an assembled rail top wind channel structure in underground station, in the new-built rail top wind channel of built underground structure side wall 1 and 2 contained angle positions of structure medium plate, wind channel board 7 mainly is supported by below crossbeam 6, crossbeam 6 supports on both ends bracket, one side bracket is pour with the underground structure side wall in step, other end bracket is pour with wind channel web 4 in step, form the wind channel web 4 of taking bracket type wing foot 5, adopt 8 mechanical connections of bayonet crab-bolt between wind channel web 4 and the 2 underground structure medium plates simultaneously.
The number of the bolt-type anchor bolts 8 for connecting the air duct web 4 with the structural middle plate 2, the depth of a pre-embedded sleeve in the structural middle plate 2, the side length of an expansion head 12 at the bottom of the bolt-type anchor bolt and the like are comprehensively determined according to actual connection requirements and reliability.
The novel assembled rail top air channel structure of the underground station and the construction method of the novel assembled rail top air channel structure comprise the following steps:
the method comprises the following steps: pouring construction of the side wall 1 of the underground structure is carried out as required, and the side wall 1 and a side wall bracket 3 reinforcement cage are bound before construction, so that concrete integral pouring construction is carried out; the side wall brackets 3 can be considered about 3m along the longitudinal interval of the air duct.
Step two: after the side wall 3 of the underground structure reaches the design strength, the middle plate 2 of the underground structure is poured according to requirements, and when a reinforcement cage is bound before the middle plate 2 is poured, the embedded sleeve 9 of the pin bolt 8 and the sleeve wing foot 10 are effectively fixed. The longitudinal distance between the embedded sleeve 9 and the sleeve wing foot 10 along the air duct can be generally considered as 1-2 m.
Step three: according to wind channel web 4 and 5 construction types of bottom bracket type rib foot, carry out the reinforcement cage ligature in prefabricated mill in advance, firmly ligature on the reinforcement cage with bayonet crab-bolt 11, bolt enlarged footing 12 simultaneously, carry out wind channel web 4 concrete monolithic concreting afterwards.
The plug-in anchor bolt 11 is matched with the embedded sleeve 9 in position, and the general alignment error is controlled within 1-2 mm.
3 plug-in anchor bolts 11 are embedded in the upper end face of each air duct web plate 4.
Step four: and (3) carrying out on-site assembly on the air duct web plate 4, accurately aligning the plug-in anchor bolt 11 on the upper end surface of the air duct web plate 4 with the embedded sleeve wing foot 10 of the middle plate 2, and ejecting the plug-in anchor bolt 11 on the top of the air duct web plate 4 into the sleeve wing foot 10.
The seams between adjacent duct webs 4 are generally located intermediate the longitudinal front and rear corbels of the duct.
Step five: according to the design requirement, the beam 6 is poured and molded in a prefabricated factory in advance, grooves in two ends of the beam 6 are matched with the convex teeth on the surface of the bracket, and the width of each groove is about 2mm larger than that of each convex tooth. The width of the beam 6 is basically consistent with that of the bracket.
Step six: and carrying out field beam 6 installation. The cross beam 6 is erected on the brackets at the two ends, and the erection is carried out according to the sequence of the bracket-shaped wing foot 5 at the first and the bracket 3 at the rear side wall.
Step seven: lay wind channel board 7 above crossbeam 6, adjacent 7 seams of wind channel board are generally located the bracket middle part, and the seam width is generally 2 ~ 3 mm.
Step eight: and (5) troweling the gaps between the adjacent air duct plates 7 by cement mortar.
The present invention is further described in detail with reference to fig. 1, 2 and 3:
the utility model discloses a novel assembled rail top wind channel mainly comprises commentaries on classics joining in marriage formula wind channel web (taking bracket type rib foot) 4, crossbeam 6, wind channel board 7. The bracket-provided wing feet 5 at the bottom of the air duct web 7 and the side wall brackets 3 support the cross beam 6 and the air duct plate 7 together.
The number of the bolt-type anchor bolts 8 for connecting the air duct web 4 with the structural middle plate 2, the depth of a pre-embedded sleeve in the structural middle plate 2, the side length of an expansion head 12 at the bottom of the bolt-type anchor bolt and the like are comprehensively determined according to actual connection requirements and reliability.
The novel assembled rail top air channel structure of the underground station and the construction method thereof comprise the following steps:
the method comprises the following steps: pouring construction of the side wall 1 of the underground structure is carried out as required, and the side wall 1 and a side wall bracket 3 reinforcement cage are bound before construction, so that concrete integral pouring construction is carried out; the side wall brackets (3) can be considered about 3m along the longitudinal interval of the air duct.
Step two: after the side wall 3 of the underground structure reaches the design strength, the middle plate 2 of the underground structure is poured according to requirements, and when a reinforcement cage is bound before the middle plate 2 is poured, the embedded sleeve 9 of the pin bolt 8 and the sleeve wing foot 10 are effectively fixed. The longitudinal distance between the embedded sleeve 9 and the sleeve wing foot 10 along the air duct can be generally considered as 1-2 m.
Step three: according to wind channel web 4 and 5 construction types of bottom bracket type rib foot, carry out the reinforcement cage ligature in prefabricated mill in advance, firmly ligature on the reinforcement cage with bayonet crab-bolt 11, bolt enlarged footing 12 simultaneously, carry out wind channel web 4 concrete monolithic concreting afterwards.
The plug-in anchor bolt 11 is matched with the embedded sleeve 9 in position, and the general alignment error is controlled within 1-2 mm.
3 plug-in anchor bolts 11 are embedded in the upper end face of each air duct web plate 4.
Step four: and (3) carrying out on-site assembly on the air duct web plate 4, accurately aligning the plug-in anchor bolt 11 on the upper end surface of the air duct web plate 4 with the embedded sleeve wing foot 10 of the middle plate 2, and ejecting the plug-in anchor bolt 11 on the top of the air duct web plate 4 into the sleeve wing foot 10.
The seams between adjacent duct webs 4 are generally located intermediate the longitudinal front and rear corbels of the duct.
Step five: according to the design requirement, the beam 6 is poured and molded in a prefabricated factory in advance, grooves in two ends of the beam 6 are matched with the convex teeth on the surface of the bracket, and the width of each groove is about 2mm larger than that of each convex tooth. The width of the beam 6 is basically consistent with that of the bracket.
Step six: and carrying out field beam 6 installation. The cross beam 6 is erected on the brackets at the two ends, and the erection is carried out according to the sequence of the bracket-shaped wing foot 5 at the first and the bracket 3 at the rear side wall.
Step seven: lay wind channel board 7 above crossbeam 6, adjacent 7 seams of wind channel board are generally located the bracket middle part, and the seam width is generally 2 ~ 3 mm.
Step eight: and (5) troweling the gaps between the adjacent air duct plates 7 by cement mortar.
The number of the bolt-type anchor bolts 8 for connecting the air duct web 4 with the structural middle plate 2, the depth of a pre-embedded sleeve in the structural middle plate 2, the side length of an expansion head 12 at the bottom of the bolt-type anchor bolt and the like are comprehensively determined according to actual connection requirements and reliability.
The specific sizes of the bracket-shaped wing feet 5 at the bottom of the air duct web 4 and the side wall brackets 3, the sizes of the protrusions on the upper surfaces of the wing feet and the side wall brackets 3 and the like are flexibly determined according to the requirements on the stress and the fixation of an air duct cross beam.
The air duct web plates 4 and the like for supporting the brackets, the air duct cross beams 6 and the air duct web plates with the bracket-shaped wing feet 5 are all of conventional reinforced concrete structures, the bolt-type anchor bolts 8 for connecting the air duct web plates 4 and the underground structure middle plates 2 are all conventional steel members, the construction process is mature, the related templates for concrete pouring, the bolt-type anchor bolts 8, the sleeves and other auxiliary facilities are conventional equipment, and the design size of the conventional equipment is conventional, and the conventional equipment is simple and easy to manufacture.
The utility model has the advantages of simple design, simple and easy operation, low construction cost, simple and convenient process and easy field assembly of quality. The purposes that the factory is prefabricated in advance and the rail top air duct can be assembled in place at one time on site are achieved. Meanwhile, the assembly type rail top air channel has the advantages of good overall stability and reliable connection, the on-site assembly time of the rail top air channel can be effectively shortened, the on-site installation time of the rail top air channel is shortened to the maximum extent, the interference with other procedures is avoided, the construction period is shortened, and the construction cost is reduced.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (8)
1. The utility model provides an underground station assembled rail top wind channel structure which characterized in that:
a horizontal cross beam (6) and a vertical air duct web plate (4) are arranged on the inner side of the structure side wall (1) and below the structure middle plate (2); the inner side of the cross beam (6) is connected to the structure side wall (1) through a bracket, the outer side of the cross beam is connected to the bottom of the air duct web plate (4) through a wing foot, and the top of the air duct web plate (4) is connected to the structure middle plate (2) through an anchor bolt;
an air duct plate (7) is arranged above the cross beam (6), and a rail top air duct structure is formed by the structure side wall (1), the structure middle plate (2), the air duct plate (7) and the air duct web (4).
2. The underground station fabricated rail top duct structure of claim 1, wherein:
the inner wall of the structure side wall (1) is provided with a side wall bracket (3), the side wall bracket (3) and the structure side wall (1) are integrally poured, and the inner side of the cross beam (6) is placed on the side wall bracket (3).
3. The underground station fabricated rail top duct structure of claim 2, wherein:
the top surface of the side wall bracket (3) is provided with convex teeth, the bottom surface of the corresponding cross beam (6) is provided with a groove, and the convex teeth of the side wall bracket (3) are inserted into the groove of the cross beam (6) to carry out component assembly.
4. The underground station fabricated rail top duct structure of claim 3, wherein:
the bottom of the air duct web plate (4) is provided with wing feet extending inwards, the wing feet are bracket-shaped wing feet (5), and the bracket-shaped wing feet (5) and the air duct web plate (4) are integrally cast.
5. The underground station fabricated rail top duct structure of claim 4, wherein:
the top surface of the bracket-shaped wing foot (5) is provided with convex teeth, the bottom surface of the corresponding cross beam (6) is provided with a groove, and the convex teeth of the bracket-shaped wing foot (5) are inserted into the groove of the cross beam (6) to assemble components.
6. The underground station fabricated rail top duct structure of claim 5, wherein:
the top end of the air duct web plate (4) is fixed to the structure middle plate (2) through a bolt type anchor bolt (8).
7. The underground station fabricated rail top duct structure of claim 6, wherein:
the bolt type anchor bolt (8) comprises an embedded sleeve (9) and an inserted anchor bolt (11);
the pre-buried sleeve (9) is pre-buried in the structural middle plate (2) in advance and is internally provided with a thread; the bottom of the embedded sleeve (9) is provided with a wing foot which is in a horn shape;
the plug-in anchor bolt (11) is pre-embedded in the air duct web (4) in advance, and the outer part of the plug-in anchor bolt is in a threaded shape; the bottom end of the plug-in anchor bolt (11) is provided with an anchor bolt expanding head (12).
8. The underground station fabricated rail top duct structure of claim 7, wherein:
the cross beams (6) are longitudinally arranged at intervals along the air duct, and correspond to the side wall brackets (3) and the bracket-shaped wing feet (5) in number and position;
a plurality of air duct plates (7) are longitudinally arranged above the cross beam (6) along the air duct, the front end and the rear end of each air duct plate (7) are respectively lapped on the cross beam (6) at the corresponding position, and gaps between the adjacent air duct plates (7) are trowelled by mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020650063.2U CN212656260U (en) | 2020-04-26 | 2020-04-26 | Assembled rail top air duct structure of underground station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020650063.2U CN212656260U (en) | 2020-04-26 | 2020-04-26 | Assembled rail top air duct structure of underground station |
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| Publication Number | Publication Date |
|---|---|
| CN212656260U true CN212656260U (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020650063.2U Withdrawn - After Issue CN212656260U (en) | 2020-04-26 | 2020-04-26 | Assembled rail top air duct structure of underground station |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535361A (en) * | 2020-04-26 | 2020-08-14 | 中铁第一勘察设计院集团有限公司 | Assembled rail top air duct structure of underground station and construction method thereof |
| CN115853570A (en) * | 2023-02-24 | 2023-03-28 | 中建六局(天津)绿色建筑科技有限公司 | Prefabricated rail top air duct assembly type structure based on foamed ceramics and construction method |
-
2020
- 2020-04-26 CN CN202020650063.2U patent/CN212656260U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535361A (en) * | 2020-04-26 | 2020-08-14 | 中铁第一勘察设计院集团有限公司 | Assembled rail top air duct structure of underground station and construction method thereof |
| CN111535361B (en) * | 2020-04-26 | 2024-08-30 | 中铁第一勘察设计院集团有限公司 | Assembled rail top air duct structure of underground station and construction method thereof |
| CN115853570A (en) * | 2023-02-24 | 2023-03-28 | 中建六局(天津)绿色建筑科技有限公司 | Prefabricated rail top air duct assembly type structure based on foamed ceramics and construction method |
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