CN111219201B - 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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- CN111219201B CN111219201B CN202010144199.0A CN202010144199A CN111219201B CN 111219201 B CN111219201 B CN 111219201B CN 202010144199 A CN202010144199 A CN 202010144199A CN 111219201 B CN111219201 B CN 111219201B
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- subway station
- air duct
- hanging beam
- plate
- middle plate
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims description 7
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000013459 approach Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram 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
- 239000011449 brick Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- 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 flue combined with a middle plate and a construction method thereof, wherein the subway station rail top air flue combined with the middle plate comprises the following components: the invention relates to a subway station middle plate, in particular to a subway station middle plate, which comprises a first hanging beam, a second hanging beam, an air channel bottom plate and an air channel top plate serving as the subway station middle plate, wherein the first hanging beam and the second hanging beam are arranged at the edges of two sides of the air channel top plate, the air channel bottom plate is arranged between the first hanging beam and the second hanging beam to form a box structure with openings at two ends.
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 member in the ventilation system of the subway station and is hung at the junction position of the middle plate and the structural side wall of the station. The functions of the medicine mainly include: 1) Exhausting smoke at the top of the train; 2) As a fixed base surface of the contact net. 3) As a carrier and sealing member for the upper part of the screening door or security door. Because of the specificity of the position of the rail top air channel, the rail top air channel is not cast with the station main body generally, and particularly in the station through which the shield construction needs to pass, the rail top air channel must be cast in a later period.
Therefore, in the prior art, the cast-in-place reinforced concrete rail top air channel and the assembly type specified air channel are generally divided, when the cast-in-place reinforced concrete rail top air channel is constructed by adopting an air channel in a cast-in-place concrete structure form, a middle plate is cast firstly, air channel anchoring steel bars are reserved at the lower part of the middle plate, and the rail top air channel is constructed by adopting a hanging die method after a middle plate scaffold is removed, so that the following defects exist: the high-altitude operation is required, and the construction danger is high; for a station through which shield construction needs to pass, secondary approach is needed for station civil construction, and the electromechanical installation and decoration time in the later period are occupied; the internal mold and the external mold are required to be reinforced, the construction process is complex, and the construction quality is difficult to control. 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 secondary approach construction of civil engineering is required, and rail laying and electromechanical installation period are affected; 2) The assembled framework and the rail top air duct of the outer-covered fireproof plate have the following defects: the steel structure has large anticorrosion engineering quantity, difficult maintenance, poor anti-seismic performance, easy loosening of fireproof plates, large steel rib wind resistance, unsmooth wind flow, short service life of the plates, frequent replacement and certain influence on operation; 3) The combined exhaust duct with the suspended air duct and the cast-in-situ reinforced concrete lower hanging beam has the following defects that the civil engineering still needs secondary approach, the maintenance cost is high, and the noise is large during operation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the subway station rail top air channel combined with the middle plate, which can enable the middle plate and the rail top air channel of the subway station to be constructed simultaneously and avoid secondary approach.
The invention is implemented by the following technical scheme:
a construction method of a subway station rail top air channel combined with a middle plate comprises the following steps:
Prefabricating subway station rail roof wind channel, wherein, subway station rail roof wind channel includes: the subway station 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, 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; the air duct top plate is provided with a masonry opening protruding outwards at the opening side, 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 gaps at the contact positions of the supporting members and a rail top air duct of the subway station;
Placing the subway station rail top air duct on the supporting member through the masonry opening and the notch;
Welding anchor bars on the embedded component;
And a cast-in-situ section is arranged below the supporting member, so that the rail top air channels of the subway station which are arranged on the 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 roof wind channel for rail roof wind channel and subway station medium plate can be under construction simultaneously, accomplish the construction of subway station medium plate earlier in prior art, the technology in back construction rail roof wind channel compares, need not the secondary and enter the field, and the wholeness is better, and the efficiency of construction is higher, in addition, cooperate with the breach on the supporting member through the laying bricks on the wind channel roof, make whole subway station prescribe wind channel can shelve on the supporting member, bear the load in subway station rail roof wind channel by the supporting member, need not to use other equipment again, alright under construction.
As a further improvement of the present invention, after the step of resting the subway station overhead air duct on the support member, the method further comprises the steps of:
And caulking the gap between the laying port and the notch.
The invention also provides a subway station rail top air channel combined with the middle plate, which comprises the following components: the first hanging beam, the second hanging beam, the air duct bottom plate and the air duct top plate serving as a middle plate of the subway station are arranged at two side edges 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: the middle plate of the subway station is made into a whole in the rail top air channel, so that the rail top air channel and the middle plate of the subway station can be constructed simultaneously.
As a further improvement of the present invention, the duct ceiling forms two outwardly protruding masonry openings at the open side.
As a further improvement of the present invention, the first hanging beam includes: a plurality of rib beams 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 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 two adjacent rib beams, and the hanging beam extension section extends out of the air duct bottom plate.
As a further improvement of the invention, the rib beam at the side of the opening is provided with a pre-buried member.
As a further improvement of the invention, the number of the rib beams is three.
As a further development of the invention, the top of the rib beam is provided with a suspension point.
As a further improvement of the invention, the height of the rib beam is 200mm-300mm; the thickness of the web plate is 50mm-100mm, and the thickness of the air duct bottom plate is 100mm-150mm.
Drawings
FIG. 1 is a flow chart of the construction method of example 1;
fig. 2 is a schematic diagram of the overall structure of the subway station rail top air duct according to embodiment 1 and embodiment 2;
Fig. 3 is a top view of the subway station rail roof air duct according to embodiment 1 and embodiment 2;
FIG. 4 is a cross-sectional view A-A of the subway station overhead tunnel of examples 1 and 2;
Fig. 5 is a B-direction view of the subway station roof tunnel according to example 1 and example 2;
Fig. 6 is a schematic diagram of the overall structure of the subway station rail top air duct according to embodiment 3.
Marking:
1-a rail top air duct of a subway station; 101-a first hanging beam; 102-a second hanging beam; 1021-hanging beam extension section; 103-an air duct bottom plate; 104-an air duct top plate; 1041-laying a mouth; 105-embedding a component; 106-anchor bars; 107-caulking; 108-rib beams; 109-web; 110-hanging point; 2-a middle plate of a subway station; 3-a support member; 31-notch; 4-cast-in-situ section; 5-waist beams; 6-underground continuous wall.
Detailed Description
For a full understanding of 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, as shown in fig. 1, comprising the following steps:
S1, prefabricating a subway station rail top air channel 1, wherein as shown in fig. 2-5, the subway station rail top air channel 1 comprises: the first hanging beam 101, the second hanging beam 102, the air duct bottom plate 103 and the air duct top plate 104 serving as a middle plate 2 of the subway station, 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, the air duct top plate 104 is provided with an outwardly protruding masonry port 1041, the first hanging beam 101 and the second hanging beam 102 are pre-buried with pre-buried members 105 at the opening side, and the station middle plate 2 and the rail top air duct are made into a whole at the prefabrication stage of the subway station rail top air duct 1, so that the rail top air duct and the subway station middle plate can be constructed simultaneously, secondary approach is avoided, and meanwhile, the construction efficiency is improved.
S2, reserving a plurality of supporting members 3 at the elevation of the middle plate of the subway station, reserving gaps at the contact positions of the supporting members 3 and the rail top air duct 1 of the subway station, wherein the gaps 31 are slightly larger than the masonry ports 1041.
S3, placing the subway station rail top air channel 1 on the supporting member 3 through the masonry ports 1041 and the notch 31, and carrying out subsequent construction by using the supporting member 3 to bear the load of the subway station rail top air channel 1 without using other equipment.
S4, welding anchor bars 106 on the embedded members 105.
S5, a cast-in-situ section is arranged below the supporting member 105, so that the subway station rail top air channels 1 arranged on two sides of the same supporting member 3 are connected.
Taking a certain subway station engineering as an example, the total length of a station is 220m, the total length of the arrangement range of the rail top air channel 1 of the subway station is 202.1m, the two ends connected with the rail top air channel 1 of the subway station are cast in situ, and the length range of the middle section 187.55 m is an integral prefabrication assembly method. The prefabricated rail top wind channel unit is divided into six types of A type to E type after being adjusted and optimized according to the size and the position of the rail top wind channel, and the specific parameters and the number are counted as follows:
example 2
A subway station rail roof wind tunnel combined with a middle plate, as shown in fig. 2, comprising: the first hanging beam 101, the second hanging beam 102, the air duct bottom plate 103 and the air duct top plate 104 serving as the middle plate 2 of the subway station are arranged at the two side edges 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.
In the above embodiment, on the opening side, as shown in fig. 3, the duct top plate 104 forms two outwardly protruding masonry ports 1041, that is, in the extending direction of the subway station rail roof duct 1, the openings of the duct top plate 104 on both sides are 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 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 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 rib beams 108, webs 109 and beam extension 1021; the rib beams 108 are vertically connected to the edge side of the air duct top plate 104, the web 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 rigidity of the subway station rail top air duct 1 can meet the requirement through the rib beams 108 and the web 109, and meanwhile the weight of the prefabricated subway station rail top air duct 1 can be 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 pre-buried steel plates, and may also be connected to rib beams of the first hanging beam 101 and the second hanging beam 102 through friction type high strength bolts.
In the above embodiment, as shown in fig. 5, the rib beam located at the side of the opening is provided with the embedded bar sleeve.
In the above embodiment, the number of rib beams 108 is three to meet the rigidity requirement.
In the above embodiment, as shown in fig. 4, the top of the rib beam 108 is provided with the hanging points 110, and the number of the hanging points 110 can be determined according to the weight of the subway station rail top air duct 1, so that the rib beam is convenient to be hung in place during construction.
In the above embodiment, the height of the rib 108 is 200mm-300mm; the thickness of the web 109 is 50mm-100mm, the thickness of the air duct bottom plate 103 is 100mm-150mm, and the size of each component can be designed according to actual engineering requirements.
Example 3
The present embodiment discloses another subway station rail top air duct combined with a middle plate, as shown in fig. 6, which is different from embodiment 1 in that the prefabricated members 105 used in the two are different from each other, and the prefabricated members in the present embodiment are steel plates.
While the preferred embodiments of the present invention have been described in detail, it should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by those skilled in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or according to limited experiments by a person skilled in the art based on the prior art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. The construction method of the subway station rail top air duct combined with the middle plate is characterized by comprising the following steps of:
Prefabricating subway station rail roof wind channel, wherein, subway station rail roof wind channel includes: the subway station 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, 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; the air duct top plate is provided with a masonry opening protruding outwards at the opening side, 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 gaps at the contact positions of the supporting members and a rail top air duct of the subway station;
Placing the subway station rail top air duct on the supporting member through the masonry opening and the notch;
Welding anchor bars on the embedded component;
And a cast-in-situ section is arranged below the supporting member, so that the rail top air channels of the subway station which are arranged on the two sides of the same supporting member are connected.
2. The method of constructing a subway station roof tunnel combined with a middle plate according to claim 1, further comprising, after the step of resting the subway station roof tunnel on the support member, the steps of:
And caulking the gap between the laying port and the notch.
3. A subway station rail top air duct combined with a middle plate, wherein the construction method as set forth in claim 1 or 2 is adopted for construction, and the method comprises the steps of: the subway station 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, 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;
at the opening side, the air duct top plate forms two outwardly protruding masonry openings;
The first hanging beam includes: a plurality of rib beams 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 two adjacent rib beams.
4. A subway station rail roof wind tunnel in combination with a midplane according to claim 3, wherein the 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 two adjacent rib beams, and the hanging beam extension section extends out of the air duct bottom plate.
5. A subway station roof tunnel in combination with a middle plate according to claim 3, wherein the rib beam at the side of the opening is provided with a pre-buried member.
6. The subway station roof tunnel in combination with a middle plate according to claim 4, wherein the number of the rib beams is three.
7. The subway station rail roof tunnel in combination with a middle plate according to claim 4, wherein a hanging point is provided at the top of the rib beam.
8. The subway station rail roof tunnel combined with the middle plate according to claim 4, wherein the height of the rib beam is 200mm-300mm; the thickness of the web plate is 50mm-100mm, and the thickness of the air duct bottom plate is 100mm-150mm.
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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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN111219201A CN111219201A (en) | 2020-06-02 |
| CN111219201B true CN111219201B (en) | 2024-05-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114033469B (en) * | 2021-10-14 | 2023-05-19 | 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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| 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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| CN110629976A (en) * | 2019-09-29 | 2019-12-31 | 湘潭大学 | A prefabricated subway station rail top air duct |
| CN110700873A (en) * | 2019-11-11 | 2020-01-17 | 建华建材（中国）有限公司 | A kind of prefabricated rail-top air duct for subway station and construction method thereof |
| 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 |
-
2020
- 2020-03-04 CN CN202010144199.0A patent/CN111219201B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN110042862A (en) * | 2019-04-29 | 2019-07-23 | 中铁第四勘察设计院集团有限公司 | The prefabricated rail in subway station against the wind road, with prefabricated middle plate connecting node and construction method |
| CN110629976A (en) * | 2019-09-29 | 2019-12-31 | 湘潭大学 | A prefabricated subway station rail top air duct |
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