CN111219201A - Subway station rail top air duct combined with middle plate and construction method thereof - Google Patents
Subway station rail top air duct combined with middle plate and construction method thereof Download PDFInfo
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- CN111219201A CN111219201A CN202010144199.0A CN202010144199A CN111219201A CN 111219201 A CN111219201 A CN 111219201A CN 202010144199 A CN202010144199 A CN 202010144199A CN 111219201 A CN111219201 A CN 111219201A
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- hanging beam
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- 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
-
- 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
- E21F1/04—Air ducts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a subway station rail top air duct combined with a middle plate and a construction method thereof, wherein the subway station rail top air duct combined with the middle plate comprises the following components: the subway station middle plate and the rail top air channel are manufactured into a whole, so that the rail top air channel and the subway station middle plate can be constructed simultaneously, compared with the process that the subway station middle plate construction is completed firstly and the rail top air channel is constructed later in the prior art, the process does not need to enter the field for the second time, and is better in integrity and higher in construction efficiency.
Description
Technical Field
The invention belongs to the technical field of rail transit construction, and particularly relates to a subway station rail top air duct combined with a middle plate and a construction method thereof.
Background
The rail top air duct, namely the train top exhaust duct, is an important internal structural component in a ventilation system of a subway station and is suspended at the joint position of a middle plate and a structural side wall of the station. The main functions are as follows: 1) smoke is discharged from the top of the train; 2) as a fixed base surface of the contact net. 3) As a screen door or safety door upper bearing and sealing member. Because the particularity of the position of the rail top air duct is not poured simultaneously with a main body of a station, particularly the rail top air duct must be poured at the later stage at the station which needs to be passed by shield construction.
Therefore, in the prior art, the cast-in-place reinforced concrete rail top air duct and the assembled specified air duct are generally divided, when the cast-in-place reinforced concrete rail top air duct is constructed by adopting the air duct in the form of a cast-in-place concrete structure, the conventional method is to firstly pour the middle plate, reserve the air duct anchoring steel bar at the lower part of the middle plate, and construct the rail top air duct by adopting a formwork hanging method after the middle plate scaffold is removed, so that the following defects exist: high-altitude operation is required, and construction danger is high; for stations needing to pass through in shield construction, secondary approach is needed in station civil construction, and later-stage electromechanical installation and decoration time is occupied; the internal mold and the external mold need to be reinforced, the construction process is complex, and the construction quality control difficulty is high. In the assembled rail top air duct, the air duct is divided into: 1) the semi-prefabricated rail top air duct has the defects that civil engineering secondary approach construction is needed, and the rail laying and electromechanical installation period are influenced; 2) the assembled framework and the outer fireproof plate rail top air duct have the following defects: the steel structure has large anticorrosion engineering quantity, difficult maintenance, poor earthquake resistance, easy looseness of fireproof plates, large wind resistance of steel ribs, unsmooth wind flow, short service life of the plates, frequent replacement and certain influence on operation; 3) the combined exhaust duct of the suspended air duct and the cast-in-place reinforced concrete lower hanging beam has the following defects that civil engineering still needs secondary approach, the maintenance cost is high, and the noise is large during operation.
Disclosure of Invention
The invention aims to provide a subway station rail top air duct combined with a middle plate, aiming at the defects of the prior art.
The invention is implemented by the following technical scheme:
a construction method of a subway station rail top air duct combined with a middle plate comprises the following steps:
prefabricated subway station rail top wind channel, wherein, subway station rail top wind channel includes: the subway station air duct comprises a first hanging beam, a second hanging beam, an air duct bottom plate and an air duct top plate serving as a middle plate of a subway station, wherein the first hanging beam and the second hanging beam are arranged at the edges of two sides of the air duct top plate; at the opening side, the air duct top plate is provided with a building opening protruding outwards, and embedded members are embedded in the first hanging beam and the second hanging beam at the opening side;
reserving a plurality of supporting members at the elevation of a middle plate of a subway station, and reserving a gap at the contact position of the supporting members and a top air channel of a subway station rail;
placing the subway station rail top air duct on the supporting member through the bricklaying opening and the notch;
welding anchor bars on the embedded components;
and a cast-in-place section is arranged below the supporting member, so that the subway station rail top air channels arranged on two sides of the same supporting member are connected.
Compared with the prior art, the method has the following beneficial technical effects: when prefabricating, make a whole with subway station medium plate and rail top wind channel, make rail top wind channel and subway station medium plate can be under construction simultaneously, accomplish subway station medium plate construction earlier in prior art, the technology in post construction rail top wind channel is compared, need not the secondary and advance, the wholeness is better, the efficiency of construction is higher, furthermore, cooperate through the breach on the opening of building on the wind channel roof and the supporting component, make whole subway station regulation wind channel can shelve on the supporting component, undertake the load in subway station rail top wind channel by the supporting component, need not to reuse other equipment, alright be under construction.
As a further improvement of the present invention, after the step of resting the subway station rail top duct on the support member, the method further comprises the steps of:
and performing caulking treatment on the gap between the joint and the notch.
The invention also provides a subway station rail top air duct combined with the middle plate, which comprises: the subway station air duct comprises a first hanging beam, a second hanging beam, an air duct bottom plate and an air duct top plate serving as a subway station middle plate, wherein the first hanging beam and the second hanging beam are arranged at edges of two sides of the air duct top plate, and the air duct bottom plate is arranged between the first hanging beam and the second hanging beam to form a box-shaped structure with openings at two ends.
Compared with the prior art, the invention has the following beneficial technical effects: make a whole with the subway station medium plate in the rail top wind channel for the rail top wind channel can be under construction simultaneously with the subway station medium plate, accomplishes the construction of subway station medium plate earlier in prior art, and the technology in post construction rail top wind channel is compared, need not the secondary and advances, and the wholeness is better, and the efficiency of construction is higher.
As a further improvement of the invention, on the opening side, the duct top plate forms two brickwork openings protruding outwards.
As a further improvement of the present invention, the first hanging beam includes: a plurality of ribs and webs;
the rib beams are vertically connected to the edge side of the air duct top plate, and the web plate is fixed between every two adjacent rib beams.
As a further improvement of the present invention, the second hanging beam includes: a plurality of rib beams, web plates and hanging beam extension sections;
the rib beams are vertically connected to the edge side of the air duct top plate, the web plate is fixed between every two adjacent rib beams, and the hanging beam extension section extends out of the air duct bottom plate.
As a further improvement of the present invention, the rib at the side of the opening is provided with an embedded member.
As a further improvement of the present invention, the number of the rib beams is three.
As a further improvement of the invention, the top of the rib beam is provided with a lifting point.
As a further improvement of the invention, the height of the rib beam is 200mm-300 mm; the thickness of the web plate is 50mm-100mm, and the thickness of the air duct bottom plate is 100mm-150 mm.
Drawings
FIG. 1 is a flowchart of a construction method described in embodiment 1;
fig. 2 is a schematic view of the overall structure of the subway station rail top duct according to embodiments 1 and 2;
fig. 3 is a top view of the subway station rail top air duct described in embodiment 1 and embodiment 2;
3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 A 3- 3 A 3 of 3 the 3 air 3 duct 3 at 3 the 3 top 3 of 3 the 3 subway 3 station 3 rail 3 according 3 to 3 embodiment 31 3 and 3 embodiment 3 2 3; 3
FIG. 5 is a view of the subway station rail top air duct according to embodiment 1 and embodiment 2 in the direction B;
fig. 6 is a schematic view of the overall structure of the subway station rail top duct according to embodiment 3.
Description of the labeling:
1-subway station rail top air duct; 101-a first hanging beam; 102-a second hanging beam; 1021-hanging beam extension section; 103-air duct bottom plate; 104-a duct ceiling; 1041-building a mouth; 105-pre-buried member; 106-anchor bars; 107-caulking; 108-a rib beam; 109-a web; 110-hoisting point; 2-subway station middle plate; 3-a support member; 31-a notch; 4-a cast-in-place section; 5-waist rail; 6-underground continuous wall.
Detailed Description
In order to fully understand the objects, features and effects of the present invention, several preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
Example 1
The embodiment discloses a construction method of a subway station rail top air duct combined with a middle plate, which comprises the following steps as shown in fig. 1:
s1, prefabricating a subway station rail top duct 1, wherein, as shown in fig. 2-5, the subway station rail top duct 1 includes: the subway station comprises a first hanging beam 101, a second hanging beam 102, an air duct bottom plate 103 and an air duct top plate 104 serving as a subway station middle plate 2, wherein the first hanging beam 101 and the second hanging beam 102 are arranged at the edges of two sides of the air duct top plate 104, and the air duct bottom plate 103 is arranged between the first hanging beam 101 and the second hanging beam 102 to form a box-shaped structure with openings at two ends; at the opening side, wind channel roof 104 is provided with outside outstanding door 1041 that builds, and first hanging beam 101 and second hanging beam 102 are pre-buried at the opening side to have pre-buried component 105, and at subway station top of a rail wind channel 1 prefabrication stage, make a whole with station medium plate 2 and top of a rail wind channel for top of a rail wind channel and subway station medium plate can be under construction simultaneously, have avoided the secondary to enter the field, have improved the efficiency of construction simultaneously.
S2, reserving a plurality of supporting members 3 at the elevation of the middle plate of the subway station, reserving a gap at the contact position of the supporting members 3 and the top air duct 1 of the subway station rail, wherein the gap 31 is slightly larger than the bricklaying opening 1041.
S3, laying the subway station rail top air duct 1 on the supporting member 3 through the brickwork joint 1041 and the notch 31, and bearing the load of the subway station rail top air duct 1 by the supporting member 3 without using other equipment, so that subsequent construction can be carried out.
S4, the anchor bars 106 are welded to the embedded members 105.
And S5, a cast-in-place section is made below the supporting member 105, so that the subway station rail top air ducts 1 placed on two sides of the same supporting member 3 are connected.
Taking a subway station project as an example, the total length of a station is 220m, the total length of the arrangement range of the subway station rail top air duct 1 is 202.1m, the two connected ends of the subway station rail top air duct 1 are cast in situ, and the middle section is 187.55 meters in length and is assembled by integral prefabrication. The prefabricated rail top wind channel unit is divided into six types from A type to E type after being adjusted and optimized according to the size and the position of a rail top wind hole, and the specific parameters and the number statistics are as follows:
example 2
A subway station rail top duct combined with a middle plate, as shown in fig. 2, comprising: the subway station air duct comprises a first hanging beam 101, a second hanging beam 102, an air duct bottom plate 103 and an air duct top plate 104 serving as a subway station middle plate 2, wherein the first hanging beam 101 and the second hanging beam 102 are arranged at edges of two sides of the air duct top plate 104, and the air duct bottom plate 103 is arranged between the first hanging beam 101 and the second hanging beam 102 to form a box-type structure with openings at two ends.
In the above embodiment, on the opening side, as shown in fig. 3, the duct top plate 104 forms two brickwork joints 1041 protruding outwards, that is, in the extending direction of the subway station rail top duct 1, the opening of the duct top plate 104 on both sides is not flush, and the length of the duct top plate 104 is slightly longer.
In the above embodiment, as shown in fig. 1, the first hanging beam 101 includes: a plurality of ribs 108 and webs 109; the rib beams 108 are vertically connected to the edge side of the air duct top plate 104, the web plate 109 is fixed between two adjacent rib beams 108, and the rigidity of the subway station rail top air duct 1 can meet the requirement through the rib beams 108 and the web plate 109, and meanwhile, the weight of the prefabricated subway station rail top air duct 1 is effectively reduced.
In the above embodiment, as shown in fig. 1, the second hanging beam 102 includes: a plurality of ribs 108, webs 109 and a hanger beam extension 1021; the rib beams 108 are vertically connected to the edge side of the air duct top plate 104, the web plate 109 is fixed between two adjacent rib beams 108, the hanging beam extension section 1021 extends out of the air duct bottom plate 103, the rib beams 108 and the web plate 109 can enable the rigidity of the subway station rail top air duct 1 to meet the requirement, and meanwhile, the weight of the prefabricated subway station rail top air duct 1 is effectively reduced.
In the above embodiment, the air duct bottom plate 103 may be welded to the first hanging beam 101 and the second hanging beam 102 through the embedded steel plates, and may also be connected to the rib beams of the first hanging beam 101 and the second hanging beam 102 through the friction-type high-strength bolts.
In the above embodiment, as shown in fig. 5, the rib beam at the side of the opening is provided with the embedded steel sleeve.
In the above embodiment, the number of the ribs 108 is three in order to satisfy the rigidity requirement.
In the above embodiment, as shown in fig. 4, the top of the rib 108 is provided with the lifting points 110, the number of the lifting points 110 can be determined according to the weight of the air duct 1 on the top of the subway station rail, and the lifting is convenient to be carried in place during construction.
In the above embodiment, the height of the rib 108 is 200mm to 300 mm; the thickness of the web plate 109 is 50mm-100mm, the thickness of the air duct bottom plate 103 is 100mm-150mm, and the sizes of all the parts can be designed according to actual engineering requirements.
Example 3
The present embodiment discloses another subway station rail top duct combined with a middle plate, as shown in fig. 6, which is different from embodiment 1 in that the prefabricated members 105 used therein are different, and the prefabricated members of the present embodiment are steel plates.
While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that modifications and variations can be effected by one skilled in the art in light of the above teachings without undue experimentation. Therefore, any technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the present inventive concept should be within the scope of protection defined by the present claims.
Claims (10)
1. A construction method of a subway station rail top air channel combined with a middle plate is characterized by comprising the following steps:
prefabricated subway station rail top wind channel, wherein, subway station rail top wind channel includes: the subway station air duct comprises a first hanging beam, a second hanging beam, an air duct bottom plate and an air duct top plate serving as a middle plate of a subway station, wherein the first hanging beam and the second hanging beam are arranged at the edges of two sides of the air duct top plate; at the opening side, the air duct top plate is provided with a building opening protruding outwards, and embedded members are embedded in the first hanging beam and the second hanging beam at the opening side;
reserving a plurality of supporting members at the elevation of a middle plate of a subway station, and reserving a gap at the contact position of the supporting members and a top air channel of a subway station rail;
placing the subway station rail top air duct on the supporting member through the bricklaying opening and the notch;
welding anchor bars on the embedded components;
and a cast-in-place section is arranged below the supporting member, so that the subway station rail top air channels arranged on two sides of the same supporting member are connected.
2. The construction method of a subway station rail head duct combined with a middle plate as claimed in claim 1, further comprising the steps of, after said step of resting said subway station rail head duct on said supporting member:
and performing caulking treatment on the gap between the joint and the notch.
3. The utility model provides a subway station rail top wind channel with medium plate combines which characterized in that includes: the subway station air duct comprises a first hanging beam, a second hanging beam, an air duct bottom plate and an air duct top plate serving as a subway station middle plate, wherein the first hanging beam and the second hanging beam are arranged at edges of two sides of the air duct top plate, and the air duct bottom plate is arranged between the first hanging beam and the second hanging beam to form a box-shaped structure with openings at two ends.
4. A subway station rail top duct combined with a middle plate as claimed in claim 3, wherein said duct top plate forms two gates protruding outward at said opening side.
5. A subway station rail top duct combined with a middle plate as claimed in claim 3, wherein said first hanging beam comprises: a plurality of ribs and webs;
the rib beams are vertically connected to the edge side of the air duct top plate, and the web plate is fixed between every two adjacent rib beams.
6. A subway station rail top duct combined with a middle plate as claimed in claim 3, wherein said second hanging beam comprises: a plurality of rib beams, web plates and hanging beam extension sections;
the rib beams are vertically connected to the edge side of the air duct top plate, the web plate is fixed between every two adjacent rib beams, and the hanging beam extension section extends out of the air duct bottom plate.
7. A subway station rail top air duct combined with a middle plate as claimed in claim 5 or 6, wherein said rib beam at the side of said opening is provided with an embedded member.
8. A subway station rail top air duct combined with a middle plate as claimed in claim 5 or 6, wherein the number of said rib beam is three.
9. A subway station rail top air duct combined with a middle plate as claimed in claim 5 or 6, wherein a hanging point is provided on the top of said rib beam.
10. The subway station rail top air duct combined with the middle plate as claimed in claim 5 or 6, wherein the height of said rib beam is 200mm-300 mm; the thickness of the web plate is 50mm-100mm, and the thickness of the air duct bottom plate is 100mm-150 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010144199.0A CN111219201B (en) | 2020-03-04 | 2020-03-04 | Subway station rail top air duct combined with middle plate and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010144199.0A CN111219201B (en) | 2020-03-04 | 2020-03-04 | Subway station rail top air duct combined with middle plate and construction method thereof |
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| CN111219201A true CN111219201A (en) | 2020-06-02 |
| CN111219201B CN111219201B (en) | 2024-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033469A (en) * | 2021-10-14 | 2022-02-11 | 广州地铁设计研究院股份有限公司 | Subway tunnel cold air cooling environmental control system |
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| CN110629976A (en) * | 2019-09-29 | 2019-12-31 | 湘潭大学 | Assembled subway station rail top wind channel |
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| CN213016423U (en) * | 2020-03-04 | 2021-04-20 | 广州地铁设计研究院股份有限公司 | Subway station rail top air duct combined with middle plate |
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2020
- 2020-03-04 CN CN202010144199.0A patent/CN111219201B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114033469A (en) * | 2021-10-14 | 2022-02-11 | 广州地铁设计研究院股份有限公司 | Subway tunnel cold air cooling environmental control system |
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| CN111219201B (en) | 2024-05-17 |
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