CN108798703B - Construction method for implementing upper heat extraction air duct in composite pipe joint station and construction structure thereof - Google Patents
Construction method for implementing upper heat extraction air duct in composite pipe joint station and construction structure thereof Download PDFInfo
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- CN108798703B CN108798703B CN201810713189.7A CN201810713189A CN108798703B CN 108798703 B CN108798703 B CN 108798703B CN 201810713189 A CN201810713189 A CN 201810713189A CN 108798703 B CN108798703 B CN 108798703B
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- air duct
- side wall
- upper heat
- steel plate
- heat extraction
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- 238000000605 extraction Methods 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 239000004567 concrete Substances 0.000 claims abstract description 43
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Duct Arrangements (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction method for implementing an upper heat extraction air duct in a composite pipe joint station, wherein a concrete pouring hole is formed in an inner layer steel plate, and a side wall reinforcing steel bar inserting hole of the upper heat extraction air duct is reserved in the inner layer steel plate; binding the side wall of the heat extraction air duct and the reinforcing steel bars of the bottom plate; inserting the side wall steel bars into the reserved main bar inserting holes of the side wall of the upper heat extraction air duct; fixing the main ribs of the side wall of the upper exhaust air duct on the inner layer steel plate by bolts; and pouring concrete into the inner space of the steel plate of the inner layer and the outer layer, the inner combined layer, the side wall of the upper heat extraction air duct and the bottom plate template through concrete pouring holes to form a steel concrete composite pipe joint and an integral structure of the upper heat extraction air duct, thereby completing the construction of the station structure. The invention has the beneficial effects that: the structural style can avoid the risks of poor construction quality and unstable connection between the prefabricated upper heat exhaust air duct and the steel concrete composite pipe joint caused by conventional overhead welding, and can safely, environmentally-friendly and efficiently finish the construction of the upper heat exhaust air duct structure of the steel concrete composite pipe joint station.
Description
Technical Field
The invention relates to the technical field of subway station construction, in particular to a construction method for implementing an upper heat extraction air duct in a composite pipe section station and a construction structure thereof.
Background
The existing subway station construction methods comprise an open excavation method, a hidden excavation method, a light-dark combination method and a method for constructing a steel-concrete composite pipe joint structure by using a jacking pipe. The conventional open and hidden excavation methods and the stations combined with the conventional open and hidden excavation methods are implemented, the upper heat extraction air duct is arranged below the middle plate, a reserved dowel bar of the upper heat extraction air duct is reserved during construction of the middle plate, a concrete pouring hole is reserved on the middle plate, when the upper heat extraction air duct is constructed, air duct reinforcing steel bars are firstly bound, then a formwork is supported, and then concrete pouring is carried out from the reserved concrete pouring hole on the middle plate, so that a complete upper heat extraction air duct is formed.
The steel concrete composite pipe joint structure station implemented by adopting the pipe jacking method is usually in a separated structure, and the steel concrete composite pipe joint structure serving as the platform layer cannot provide the pouring condition of the upper heat exhaust air duct, and meanwhile, the problem that the upper heat exhaust air duct and the composite pipe joint structure are difficult to firmly connect exists. If the prefabricated upper heat exhaust air duct is adopted, vertical steel bars are welded conventionally, concrete is poured, and the welding engineering amount of the method is large, and the method is overhead welding, so that the construction quality cannot be guaranteed; the upper heat extraction air duct has small space and difficult construction.
The existing construction method and defects of the heat extraction air duct on the subway station are as follows:
1. the traditional station upper heat extraction air duct is arranged below the middle plate, a reserved dowel bar for the upper heat extraction air duct is reserved during middle plate construction, and the station with the composite pipe joint structure is usually in a separated structure with a station hall layer, and no middle plate structure exists.
2. When the heat extraction air duct is constructed, the air duct reinforcing steel bars are firstly bound, then the templates are supported, and then concrete pouring is carried out from the reserved concrete pouring holes on the middle plate, so that a complete upper heat extraction air duct is formed, the composite pipe joint structure serving as a platform layer cannot provide the pouring condition of the upper heat extraction air duct, and meanwhile, the problem that the upper heat extraction air duct is difficult to firmly connect with the composite pipe joint structure exists.
3. In the steel-concrete composite pipe joint, if a prefabricated upper heat extraction air duct is adopted, vertical steel bars are welded conventionally, and then concrete is poured. The welding engineering quantity is great, the overhead welding is adopted, and the construction quality cannot be ensured; the upper heat extraction air duct has small space and difficult construction.
Those skilled in the art are directed to solving the above-mentioned technical drawbacks.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is directed to a construction method and a construction structure for implementing an upper heat exhaust duct in a composite pipe section station.
In order to achieve the technical purpose, the invention provides a construction method for implementing an upper heat exhaust air duct in a composite pipe section station, which comprises the following steps:
the method comprises the steps that firstly, a steel ring is formed by an inner layer steel plate and an outer layer steel plate in the thickness direction, concrete pouring holes are formed in the inner layer steel plate, and meanwhile, steel bar inserting holes of side walls of an upper exhaust air duct are reserved in the inner layer steel plate;
step two: binding the side wall of the heat extraction air duct and the reinforcing steel bars of the bottom plate after the steel plate sections are connected to form a whole;
step three: inserting the side wall steel bars into the reserved main bar inserting holes of the side wall of the upper heat extraction air duct; fixing the main ribs of the side wall of the upper exhaust air duct on the inner layer steel plate by bolts;
step four: and pouring concrete into the inner space of the steel plate of the inner layer and the outer layer, the inner combined layer, the side wall of the upper heat extraction air duct and the bottom plate template through concrete pouring holes to form a steel concrete composite pipe joint and an integral structure of the upper heat extraction air duct, thereby completing the construction of the station structure.
The invention also provides a construction structure for implementing the upper heat exhaust air duct in the composite pipe joint station, which comprises an outer layer steel plate, an inner layer steel plate, an upper exhaust bottom plate and an upper heat exhaust air duct side wall; the outer steel plate is arranged outside the inner steel plate, the upper exhaust bottom plate and the upper exhaust air duct side wall are connected with the inner steel plate, and the upper exhaust bottom plate and the upper exhaust air duct side wall are connected to form an upper exhaust air duct.
Preferably, the inner layer steel plate is provided with a concrete pouring and tamping hole, and a reserved upper exhaust duct side wall main rib inserting hole is formed in the concrete pouring and tamping hole.
Preferably, the upper exhaust bottom plate is provided with air holes.
Preferably, the upper exhaust air to side wall distributing ribs and the upper exhaust air to side wall main ribs are arranged in the upper exhaust air duct side wall.
Preferably, an upper exhaust bottom plate distribution rib and an upper exhaust bottom plate main rib are arranged in the upper exhaust bottom plate.
Preferably, the embedded part is arranged at the lower part from the upper exhaust air to the side wall.
The invention has the beneficial effects that:
the structural form of the invention can avoid the risks of poor construction quality and unstable connection between the prefabricated upper heat exhaust air duct and the steel concrete composite pipe joint caused by conventional overhead welding, and can safely, environmentally-friendly and efficiently finish the construction of the heat exhaust air duct structure on the steel concrete composite pipe joint station.
Drawings
FIG. 1 is a block diagram of a reinforced concrete composite joint pipe and a reserved hole according to the invention;
fig. 2 is a binding diagram of the bottom of the side wall of the upper heat extraction air duct according to the reinforcing steel bars;
FIG. 3 is a diagram showing the connection between the upper exhaust duct structure and the inner steel plate;
fig. 4 is a block diagram of the steel concrete composite and upper heat exhaust duct of the present invention.
Detailed Description
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
As shown in fig. 1 and in combination with fig. 2 to 4, a construction method for implementing an upper heat exhaust duct in a composite pipe section station according to an embodiment of the present invention includes the following steps:
the method comprises the steps that firstly, a steel ring is formed by an inner layer steel plate and an outer layer steel plate in the thickness direction, concrete pouring holes are formed in the inner layer steel plate, and meanwhile, steel bar inserting holes of a side wall of an upper heat extraction air duct are reserved in the inner layer steel plate;
step two: binding the side wall of the heat extraction air duct and the reinforcing steel bars of the bottom plate after the steel plate sections are connected to form a whole;
step three: inserting the side wall steel bars into the reserved main bar inserting holes of the side wall of the upper heat extraction air duct; fixing the main ribs of the side wall of the upper exhaust air duct on the inner layer steel plate by bolts;
step four: and pouring concrete into the inner space of the steel plate of the inner layer and the outer layer, the inner combined layer, the side wall of the upper heat extraction air duct and the bottom plate template through concrete pouring holes to form a steel concrete composite pipe joint and an integral structure of the upper heat extraction air duct, thereby completing the construction of the station structure.
Specifically, the construction structure for implementing the upper heat exhaust air duct in the composite pipe joint station comprises an outer layer steel plate 1, an inner layer steel plate 2, an upper exhaust bottom plate 5 and an upper heat exhaust air duct side wall 6; the outer layer steel plate 1 is arranged outside the inner layer steel plate 2, the upper exhaust bottom plate 5 and the upper exhaust air channel side wall 6 are fixedly connected with the inner layer steel plate 2, the upper exhaust bottom plate 5 and the upper exhaust air channel side wall 6 are connected to form an upper exhaust air channel 14, the inner layer steel plate 2 is provided with a concrete pouring and tamping hole 4, and an upper exhaust air channel side wall main rib inserting hole 3 is reserved in the concrete pouring and tamping hole 4.
The upper exhaust bottom plate 5 is provided with an air hole 7, and an upper exhaust to side wall distributing rib 10 and an upper exhaust to side wall main rib 9 are arranged in the upper exhaust air duct side wall 6.
In addition, upward exhaust bottom plate 5 is interior to be provided with upward exhaust bottom plate distribution muscle 12 and upward exhaust bottom plate main muscle 11, upward exhaust is provided with built-in fitting 13 to the lower part of side wall 6.
The invention can avoid the risks of poor construction quality and unstable connection between the prefabricated upper heat exhaust air duct and the steel concrete composite pipe joint caused by conventional overhead welding, and can safely, environmentally-friendly and efficiently finish the construction of the heat exhaust air duct structure on the steel concrete composite pipe joint station.
In the rib plate design in the steel concrete composite pipe section, the rib plate corresponding to the side wall of the upper heat extraction air duct is subjected to targeted design, a reinforcing steel bar hole is reserved at the position corresponding to the reinforcing steel bar of the upper heat extraction air duct, the reinforcing steel bar of the upper heat extraction air duct is bound firstly during implementation of the upper heat extraction air duct, the reinforcing steel bar is inserted into the reserved reinforcing steel bar hole, then the main rib of the side wall of the upper heat extraction air duct is fixed on an inner layer steel plate by adopting bolts, and post-cast composite concrete and the upper heat extraction air duct are cast together to form an integral station structure of the upper heat extraction air duct and the steel concrete composite pipe section.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (5)
1. The construction structure for implementing the upper heat exhaust air duct in the composite pipe section station comprises an outer layer steel plate, an inner layer steel plate, an upper exhaust bottom plate and an upper heat exhaust air duct side wall; the outer layer steel plate is arranged outside the inner layer steel plate, the upper exhaust bottom plate and the upper exhaust air channel side wall are connected with the inner layer steel plate, and an upper exhaust air channel is formed by connecting the upper exhaust bottom plate and the upper exhaust air channel side wall;
the inner layer steel plate is provided with a concrete pouring and tamping hole, and a reserved upper exhaust duct side wall main rib inserting hole is formed in the concrete pouring and tamping hole;
the construction steps are as follows:
the method comprises the steps that firstly, a steel ring is formed by an inner steel plate, an outer steel plate and a concrete pouring hole is formed in the inner steel plate, and meanwhile, a steel bar inserting hole of a side wall of an upper heat extraction air duct is reserved in the inner steel plate;
step two: binding the side wall of the heat extraction air duct and the reinforcing steel bars of the bottom plate after the steel plate sections are connected to form a whole;
step three: inserting the side wall steel bars into the reserved main bar inserting holes of the side wall of the upper heat extraction air duct; fixing the main ribs of the side wall of the upper exhaust air duct on the inner layer steel plate by bolts;
step four: and pouring concrete into the inner space of the steel plate of the inner layer and the outer layer, the inner combined layer, the side wall of the upper heat extraction air duct and the bottom plate template through concrete pouring holes to form a steel concrete composite pipe joint and an integral structure of the upper heat extraction air duct, thereby completing the construction of the station structure.
2. The construction method for implementing the upper heat exhaust air duct in the composite pipe joint station according to claim 1, wherein: the upper exhaust bottom plate is provided with an air hole.
3. The construction method for implementing the upper heat exhaust air duct in the composite pipe joint station according to claim 2, wherein: and the side wall of the upper heat exhaust air duct is internally provided with upper exhaust air to side wall distributing ribs and upper exhaust air to side wall main ribs.
4. A method of constructing an upper exhaust air duct in a composite pipe section station as claimed in claim 3, wherein: an upper exhaust bottom plate distribution rib and an upper exhaust bottom plate main rib are arranged in the upper exhaust bottom plate.
5. The construction method for implementing the upper heat exhaust air duct in the composite pipe joint station according to claim 4, wherein: the embedded part is arranged at the lower part from the upper exhaust air to the side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713189.7A CN108798703B (en) | 2018-07-03 | 2018-07-03 | Construction method for implementing upper heat extraction air duct in composite pipe joint station and construction structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713189.7A CN108798703B (en) | 2018-07-03 | 2018-07-03 | Construction method for implementing upper heat extraction air duct in composite pipe joint station and construction structure thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN108798703A CN108798703A (en) | 2018-11-13 |
| CN108798703B true CN108798703B (en) | 2023-10-03 |
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| CN201810713189.7A Active CN108798703B (en) | 2018-07-03 | 2018-07-03 | Construction method for implementing upper heat extraction air duct in composite pipe joint station and construction structure thereof |
Country Status (1)
| Country | Link |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742494A (en) * | 1993-08-02 | 1995-02-10 | Sumitomo Metal Ind Ltd | Segment for lining tunnel |
| JP2001280093A (en) * | 2000-04-03 | 2001-10-10 | Akashi Semishiirudo Kensetsu Kk | Tunnel segment |
| JP2011012490A (en) * | 2009-07-03 | 2011-01-20 | Nippon Steel Corp | Composite segment and tunnel lining |
| JP2011214390A (en) * | 2010-03-18 | 2011-10-27 | Hiro Corporation:Kk | Structure for mounting plate member to tunnel wall face |
| CN203702167U (en) * | 2013-10-21 | 2014-07-09 | 上海市政工程设计研究总院（集团）有限公司 | Composite segment structure |
| CN104612697A (en) * | 2014-12-15 | 2015-05-13 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for subway station track upwind way |
| CN107297810A (en) * | 2017-07-21 | 2017-10-27 | 中建八局第建设有限公司 | A kind of making of precast wall body component and installation method |
| CN108119177A (en) * | 2017-12-26 | 2018-06-05 | 上海市政工程设计研究总院（集团）有限公司 | A kind of tunnel exhausting duct precast assembly structure |
| CN108194116A (en) * | 2017-12-06 | 2018-06-22 | 广州地铁设计研究院有限公司 | A kind of integral prefabricated rail in subway station road assembling structure against the wind |
| CN208534491U (en) * | 2018-07-03 | 2019-02-22 | 上海市城市建设设计研究总院（集团）有限公司 | Implement the constructing structure in upper heat extraction air duct in compound tube coupling station |
-
2018
- 2018-07-03 CN CN201810713189.7A patent/CN108798703B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742494A (en) * | 1993-08-02 | 1995-02-10 | Sumitomo Metal Ind Ltd | Segment for lining tunnel |
| JP2001280093A (en) * | 2000-04-03 | 2001-10-10 | Akashi Semishiirudo Kensetsu Kk | Tunnel segment |
| JP2011012490A (en) * | 2009-07-03 | 2011-01-20 | Nippon Steel Corp | Composite segment and tunnel lining |
| JP2011214390A (en) * | 2010-03-18 | 2011-10-27 | Hiro Corporation:Kk | Structure for mounting plate member to tunnel wall face |
| CN203702167U (en) * | 2013-10-21 | 2014-07-09 | 上海市政工程设计研究总院（集团）有限公司 | Composite segment structure |
| CN104612697A (en) * | 2014-12-15 | 2015-05-13 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for subway station track upwind way |
| CN107297810A (en) * | 2017-07-21 | 2017-10-27 | 中建八局第建设有限公司 | A kind of making of precast wall body component and installation method |
| CN108194116A (en) * | 2017-12-06 | 2018-06-22 | 广州地铁设计研究院有限公司 | A kind of integral prefabricated rail in subway station road assembling structure against the wind |
| CN108119177A (en) * | 2017-12-26 | 2018-06-05 | 上海市政工程设计研究总院（集团）有限公司 | A kind of tunnel exhausting duct precast assembly structure |
| CN208534491U (en) * | 2018-07-03 | 2019-02-22 | 上海市城市建设设计研究总院（集团）有限公司 | Implement the constructing structure in upper heat extraction air duct in compound tube coupling station |
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| CN108798703A (en) | 2018-11-13 |
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