CN207144952U - A kind of high speed subway tunnel portal aerodynamic effect buffer structure - Google Patents
A kind of high speed subway tunnel portal aerodynamic effect buffer structure Download PDFInfo
- Publication number
- CN207144952U CN207144952U CN201721039078.XU CN201721039078U CN207144952U CN 207144952 U CN207144952 U CN 207144952U CN 201721039078 U CN201721039078 U CN 201721039078U CN 207144952 U CN207144952 U CN 207144952U
- Authority
- CN
- China
- Prior art keywords
- tunnel
- section
- high speed
- expanding reach
- train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a kind of high speed subway tunnel portal aerodynamic effect buffer structure, including standard section tunnel (3), section expanding reach (2) is set up at tunnel portal (1) place of the standard section tunnel (3), the cross-sectional area of the section expanding reach (2) is 1.3~1.5 times of standard section tunnel (3) cross-sectional area, and the length of the section expanding reach (2) is more than or equal to the length of current train；The section expanding reach (2) is mutant form or gradual change form structure, drives into the pressure change rate and pressure oscillation amplitude in standard section tunnel (3) at a high speed for reducing train.High speed subway tunnel portal aerodynamic effect buffer structure of the present utility model, the section expanding reach of tunnel portal can reduce the pressure change rate and pressure oscillation amplitude when train drives at a high speed, train can be effectively reduced and drive into aerodynamic effect caused by tunnel at a high speed, meet occupant's pressure comfort requirement.
Description
Technical field
The utility model relates to Tunnel Engineering and Aerodynamics of High-speed Trains field, more particularly, to one kind at high speed
Iron tunnel portal aerodynamic effect buffer structure.
Background technology
With the development of economic society and technology, the speed of service of many city underground trains is also gradually stepping up：As extensively
No. 3 lines of state subway, No. 11 lines of Shenzhen Metro, Dongguan R2 lines etc., design highest running speed have all reached 120km/h.Subway arranges
Car is run in the underground space, when the speed of service is more than 100km/h, many problems negligible in low speed, in high speed
Just become gradually obvious.
When high speed subway train drives into tunnel at a high speed at the tunnel portal caused by interior pressure rate of change and pressure oscillation
Amplitude problems of too, the comfortableness taken to the security, economy and passenger of train operation and tunnel surrounding environment, station ring
There is harmful effect in border.Guangzhou Metro Line 3 initial operating stage, just often receives passenger's complaint, and reaction has ear-drum malaise symptoms, train
Driver's malaise symptoms are even more serious, or even the occupational diseases such as intermittent deafness occur, therefore when formally putting into effect, train is entering
When going out tunnel more employ " reduction of speed " operation, the segment distance of tunnel one to be entered afterwards ramp up again, after travel at the uniform speed, influence to arrange
The traffic efficiency of car, length of tunnel are then even more serious compared with temporary influence.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model provides a kind of high speed subway tunnel portal gas
Dynamic effect buffer structure, it is intended that setting tunnel cross-section expanding reach in tunnel entrance, alleviate train and drive into tunnel at a high speed
When at tunnel portal to in-car external pressure influence of fluctuations, meet occupant's pressure comfort requirement, improve train passage effect
Rate.
To achieve these goals, the utility model provides a kind of high speed subway tunnel portal aerodynamic effect buffer structure,
Including standard section tunnel,
Tunnel entrance in the standard section tunnel sets up section expanding reach, the cross-sectional area of the section expanding reach
For 1.3~1.5 times of the standard section tunnel cross-section area, the length of the section expanding reach is more than or equal to current train
Length；
The section expanding reach is mutant form or gradual change form structure, and standard section tunnel is driven at a high speed for reducing train
The pressure change rate and pressure oscillation amplitude in road, gas caused by standard section tunnel is driven at a high speed so as to be effectively reduced train
Dynamic effect.
Further, the section expanding reach is regular rectilinear type section, and the cross-sectional area at its both ends breaks for the standard
1.3 times of face tunnel cross-section area, its length are equal to the length of current train.
Further, the face area phase of the cross-sectional area of described section expanding reach one end and the standard section tunnel
Face area Deng, the other end is equal to 1.5 times of face area of the standard section tunnel, and the end of the section expanding reach
Face area becomes larger along straight line from one end to the other side.
The cross-sectional area of described section expanding reach one end is equal with the face area in the standard section tunnel, the other end
Face area is equal to 1.4 times of face area of the standard section tunnel, and the face area of the section expanding reach is from one
Hold to the other end along camber line and become larger.
In general, by the contemplated above technical scheme of the utility model compared with prior art, can obtain down
Row beneficial effect：
(1) high speed subway tunnel portal aerodynamic effect buffer structure of the present utility model, the section expanding reach of tunnel portal
Pressure change rate and pressure oscillation amplitude of the train at a high speed when driving into can be reduced, when can be effectively reduced train and driving into tunnel at a high speed
Caused aerodynamic effect, meet occupant's pressure comfort requirement.
(2) high speed subway tunnel portal aerodynamic effect buffer structure of the present utility model, simple in construction, easy to implement, hole
Without reduction of speed when the train run at high speed outside drives into tunnel, the energy-efficient operation of train is realized, conventional train is solved and drives into tunnel
The problem of speed can not be too high during road, operational efficiency is improved, there is significant economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is that a kind of high speed subway tunnel portal aerodynamic effect buffer structure mutant form of the utility model embodiment is formed
Schematic diagram；
Fig. 2 is that a kind of high speed subway tunnel portal aerodynamic effect buffer structure gradual change type of the utility model embodiment forms original
Reason figure.
In all of the figs, same reference represents identical technical characteristic, is specially：1- tunnel portals, 2- break
Face expanding reach, 3- standard sections tunnel.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.It is in addition, involved in each embodiment of the utility model disclosed below
As long as and to technical characteristic each other do not form conflict can be mutually combined.
Principle of the present utility model is：Tunnel at tunnel portal in the range of a vehicle commander is used into big cross section form, tunnel
Road expanding reach basal area is 1.3~1.5 times of standard cross-section of tunnel area, and the length L of tunnel expanding reach section is according to current
Train length determines.For example, when speed is 120km/h, main body tunnel clearance cross-sectional area is 26m2, tunnel portal is using expansion
Segment type formula, expanding reach cross-sectional area are 36m2, expansion segment length is 120m (vehicle commander).
Fig. 1 is that a kind of high speed subway tunnel portal aerodynamic effect buffer structure mutant form of the utility model embodiment is formed
Schematic diagram, in preferred embodiment of the present utility model, tunnel expanding reach section can use mutant form as shown in Figure 1,
Section expanding reach 2 is set up at the tunnel portal 1 in standard section tunnel 3, the section expanding reach 2 is regular rectilinear type section, and it is disconnected
Face area is 1.3 times of the cross-sectional area of standard section tunnel 3, and its length L is equal to the length of a train.Height of the present utility model
Fast subway tunnel hole aerodynamic effect buffer structure, the section expanding reach of tunnel portal can reduce pressure when train drives at a high speed
Rate of change and pressure oscillation amplitude, train can be effectively reduced and drive into aerodynamic effect caused by tunnel at a high speed, meet vehicle occupant
Member's pressure comfort requirement.
Fig. 2 is that a kind of high speed subway tunnel portal aerodynamic effect buffer structure gradual change type of the utility model embodiment forms original
Reason figure, in preferred embodiment of the present utility model, tunnel expanding reach section can also use gradual change form as shown in Figure 2,
Section expanding reach 2 is set up at the tunnel portal 1 in standard section tunnel 3, one end cross-sectional area and standard of the section expanding reach 2
The face area of bore tunnel 3 is equal, and other end face area is equal to 1.5 times of the face area in standard section tunnel 3, and should
The face area of section expanding reach 2 becomes larger from one end to the other side, and the buffer structure form is simple, easy to implement, outside hole
Without reduction of speed when the train run at high speed drives into tunnel, the energy-efficient operation of train is realized, conventional train is solved and drives into tunnel
The problem of Shi Sudu can not be too high, operational efficiency is improved, there is significant economic benefit and social benefit.
The structure type of section expanding reach 2 shown in Fig. 1 and Fig. 2 is only the preferable embodiment of the utility model effect,
The end face structure form of other section expanding reach, such as camber line gradual change form, as long as according to by vehicle commander's scope at tunnel portal
Interior tunnel uses big cross section form, and tunnel expanding reach basal area is 1.3~1.5 times of standard cross-section of tunnel area, and tunnel expands
The length L of big section section determines the structure type of principle according to current train length, each falls within protection model of the present utility model
Enclose.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
For limiting the utility model, any modification of all made within spirit of the present utility model and principle, equivalent substitution and change
Enter, should be included within the scope of protection of the utility model.
Claims (4)
1. a kind of high speed subway tunnel portal aerodynamic effect buffer structure, including standard section tunnel (3), it is characterised in that：
Section expanding reach (2) is set up at tunnel portal (1) place of the standard section tunnel (3), the section expanding reach (2)
Cross-sectional area is 1.3~1.5 times of standard section tunnel (3) cross-sectional area, and the length of the section expanding reach (2) is more than
Equal to the length of current train；
The section expanding reach (2) is mutant form or gradual change form structure, and standard section tunnel is driven at a high speed for reducing train
The pressure change rate and pressure oscillation amplitude in road (3), produced so as to be effectively reduced when train drives into standard section tunnel (3) at a high speed
Raw aerodynamic effect.
2. a kind of high speed subway tunnel portal aerodynamic effect buffer structure according to claim 1, it is characterised in that described
Section expanding reach (2) is regular rectilinear type section, and the cross-sectional area at its both ends is standard section tunnel (3) cross-sectional area
1.3 times, its length is equal to the length of current train.
A kind of 3. high speed subway tunnel portal aerodynamic effect buffer structure according to claim 1 or 2, it is characterised in that
The cross-sectional area of described section expanding reach (2) one end is equal with the face area of the standard section tunnel (3), the end of the other end
Face area is equal to 1.5 times of the face area of the standard section tunnel (3), and the face area of the section expanding reach (2)
Become larger from one end to the other side along straight line.
A kind of 4. high speed subway tunnel portal aerodynamic effect buffer structure according to claim 1 or 2, it is characterised in that
The cross-sectional area of described section expanding reach (2) one end is equal with the face area of the standard section tunnel (3), the end of the other end
Face area is equal to 1.4 times of the face area of the standard section tunnel (3), and the face area of the section expanding reach (2)
Become larger from one end to the other side along camber line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721039078.XU CN207144952U (en) | 2017-08-18 | 2017-08-18 | A kind of high speed subway tunnel portal aerodynamic effect buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721039078.XU CN207144952U (en) | 2017-08-18 | 2017-08-18 | A kind of high speed subway tunnel portal aerodynamic effect buffer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207144952U true CN207144952U (en) | 2018-03-27 |
Family
ID=61666844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721039078.XU Active CN207144952U (en) | 2017-08-18 | 2017-08-18 | A kind of high speed subway tunnel portal aerodynamic effect buffer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207144952U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612541A (en) * | 2018-05-03 | 2018-10-02 | 中南大学 | Alleviate the variable cross-section tunnel structure and parameter determination method of tunnel aerodynamic effect |
| CN109083656A (en) * | 2018-09-17 | 2018-12-25 | 中铁二院工程集团有限责任公司 | A kind of railway tunnel lining structure with Pneumatic effect releasing function |
| CN110924975A (en) * | 2019-11-29 | 2020-03-27 | 中车青岛四方机车车辆股份有限公司 | Pneumatic effect slowing device for train passing through tunnel |
| CN114139255A (en) * | 2021-11-25 | 2022-03-04 | 天津大学 | Method for calculating position of middle air shaft at entrance section of high-speed subway tunnel |
| CN115042837A (en) * | 2022-06-22 | 2022-09-13 | 中南大学 | Pressure wave relieving method based on accelerated tunnel passing of high-speed train |
-
2017
- 2017-08-18 CN CN201721039078.XU patent/CN207144952U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612541A (en) * | 2018-05-03 | 2018-10-02 | 中南大学 | Alleviate the variable cross-section tunnel structure and parameter determination method of tunnel aerodynamic effect |
| CN108612541B (en) * | 2018-05-03 | 2020-04-14 | 中南大学 | Variable cross-section tunnel structure for relieving tunnel pneumatic effect and parameter determination method |
| CN109083656A (en) * | 2018-09-17 | 2018-12-25 | 中铁二院工程集团有限责任公司 | A kind of railway tunnel lining structure with Pneumatic effect releasing function |
| CN109083656B (en) * | 2018-09-17 | 2024-05-28 | 中铁二院工程集团有限责任公司 | Railway tunnel lining structure with pneumatic effect relieving function |
| CN110924975A (en) * | 2019-11-29 | 2020-03-27 | 中车青岛四方机车车辆股份有限公司 | Pneumatic effect slowing device for train passing through tunnel |
| CN110924975B (en) * | 2019-11-29 | 2021-11-12 | 中车青岛四方机车车辆股份有限公司 | Pneumatic effect slowing device for train passing through tunnel |
| CN114139255A (en) * | 2021-11-25 | 2022-03-04 | 天津大学 | Method for calculating position of middle air shaft at entrance section of high-speed subway tunnel |
| CN114139255B (en) * | 2021-11-25 | 2024-06-07 | 天津大学 | Calculation method for middle wind well position of entrance section of high-speed subway tunnel |
| CN115042837A (en) * | 2022-06-22 | 2022-09-13 | 中南大学 | Pressure wave relieving method based on accelerated tunnel passing of high-speed train |
| CN115042837B (en) * | 2022-06-22 | 2023-12-12 | 中南大学 | Pressure wave relieving method based on acceleration of high-speed train through tunnel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207144952U (en) | A kind of high speed subway tunnel portal aerodynamic effect buffer structure | |
| CN108162995B (en) | Air guide device and method for reducing air pressure difference resistance by using same | |
| CN202115536U (en) | Full-active control vibration damping device of railway vehicle | |
| CN104727827A (en) | Railway tunnel for buffering aerodynamics effects of high-speed train in tunnel | |
| CN104925086B (en) | Underground railway track detects car | |
| CN103723154B (en) | A kind of vacuum pipe traffic vehicle bending upwards type headstock tailstock structure | |
| CN202541539U (en) | Damping device between high-speed motor train units | |
| CN207093094U (en) | Relief hole buffer structure at a kind of high speed subway tunnel portal | |
| CN104057962A (en) | Vacuum and supersonic maglev double lanes | |
| CN102128036A (en) | Construction method of cross section-expanded loop type depressurizing portal for high-speed railway tunnel | |
| CN203008928U (en) | Tunnel structure for high-speed railway | |
| Nozhenko et al. | Reducing tram car’s curve-pasing resistance by double treaded wheel profile | |
| 张剑 et al. | Wheel profile design based on rail profile expansion method | |
| CN103912284A (en) | High-speed railway tunnel structure | |
| CN201914257U (en) | Fully closed vestibule type outer diaphragm for high-speed railway passenger vehicles | |
| CN202071848U (en) | Inter-vehicle damping device of railway vehicle | |
| CN208931347U (en) | Thin-wall tube radially dilates energy absorption device and the rail vehicle with it | |
| CN205601830U (en) | A low pressure pipeline for magnetic suspension car | |
| CN204715135U (en) | Tram fastener plastic base | |
| CN202866818U (en) | Shield method tunnel circular prefabricated reinforced concrete lining structure | |
| CN115042837B (en) | Pressure wave relieving method based on acceleration of high-speed train through tunnel | |
| CN111824193B (en) | High-speed train wake passive control method | |
| CN203666365U (en) | Front-engine front-drive one-step city bus | |
| CN204726205U (en) | Automobile vehicle window sealing strip | |
| CN114876552A (en) | Tunnel ventilation system for pressure relief of underground railway station of rail transit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |