CN104727827B - A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel - Google Patents

A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel Download PDF

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Publication number
CN104727827B
CN104727827B CN201510021906.6A CN201510021906A CN104727827B CN 104727827 B CN104727827 B CN 104727827B CN 201510021906 A CN201510021906 A CN 201510021906A CN 104727827 B CN104727827 B CN 104727827B
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Prior art keywords
tunnel
well head
air flow
structure body
flow structure
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CN104727827A (en
Inventor
杜粉莲
陈丽莲
郭涛
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Jiangsu Hanxiang Construction Group Co ltd
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Quanzhou Taiwanese Investment Zone Huaao Electronic Technology Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings

Abstract

The invention discloses a kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel, it is at the top of tunnel-liner or two sides are provided with the first well head；The second well head is provided with the centre of non-fragment orbit；Ventilation shaft is set between rock mass and tunnel-liner, and ventilation shaft one end is connected with the first well head, and the other end is connected with the second well head, the first well head, the second well head and air channel constitute air flow structure body；Air flow structure body is interval with along length of tunnel direction, and the present invention alleviates transient pressure in hole, hole minute-pressure wave effect, the various aerodynamic effects in tunnel including pneumatic load, locomotive resistance.

Description

A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel
Technical field
Imitated the present invention relates to Railway Tunnel field, more particularly to a kind of bullet train air force in tunnel of alleviating The railway tunnel answered.
Background technology
When High-speed Trains Passing Through Tunnel, it may occur that a series of aerodynamic effects, including：Pressure in hole rises suddenly Height, causes machine interior pressure to occur transition, and the transition of pressure can produce pressure differential in human body ear-drum, cause the ear-drum of passenger not Suitable or even dizzy, vomiting, has a strong impact on the comfortableness and health of passenger.Auxiliary equipment in locomotive, tunnel lining structure and tunnel （Such as illuminator）By the repeated action of pneumatic load, cause body construction, auxiliary equipment and tunnel-liner in tunnel The durability of auxiliary equipment and tunnel-liner and function is used in fatigue damage, reduction tunnel, shorten auxiliary equipment in tunnel Service life, or even jeopardize traffic safety.Air drag increases, and has both caused the increase of locomotive operation energy consumption, causes again hot in tunnel Amount accumulation and temperature rise, cause various potential safety hazards.
The content of the invention
The technical problem to be solved in the present invention is, when High-speed Trains Passing Through Tunnel, to alleviate transient pressure, hole in hole micro- Various aerodynamic effects in pressure wave effect, tunnel including pneumatic load, locomotive additive air resistance.
The technical scheme that the present invention is provided is：A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel Road, at the top of tunnel-liner or two sides be provided with the first well head；The second well head is provided with the centre of non-fragment orbit；Rock mass with Ventilation shaft is set between tunnel-liner, and ventilation shaft one end is connected with the first well head, and the other end is connected with the second well head, first Well head, the second well head and air channel constitute air flow structure body；Air flow structure is interval with along length of tunnel direction Body.
Further, adjacent air flow structure body spacing range is 3-7m.Adjacent air flow structure body spacing Scope is smaller, can more alleviate aerodynamic effects, but also results in that tunnel structure is not strong to rock mass support force, and construction cost is got over Height, selection 3-7m spacing range can be issued to the purpose for alleviating aerodynamic effects in rational cost.
Further, the air flow structure body close to tunnel portal is apart from hole 10-30m.This structure can alleviate hole Mouth minute-pressure wave effect.
Further, the cross section of the first well head is circle, and is progressively reduced towards interior diameter at opening.This structure is favourable Smoothly enter in the air in guide tunnel in the first well head.
Further, the cross section of the second well head is circle, and is incrementally increased at opening towards interior diameter.This structure is favourable In coming out air Relatively centralized from the second well head, larger air pressure can be so produced.
Compared with prior art, the beneficial effects of the invention are as follows：Air flow structure body is set in tunnel, when train is high When speed is crossed, tunnel internal point air enters from the first well head, and another part is then gushed out from tunnel portal, and this extends compressional wave The transient pressure and hole minute-pressure crest value being increased in the time that Pressure maximum value is undergone, reduction locomotive, multiply so as to improve The comfortableness of visitor, effectively alleviates the negative pressure in open cut tunnel with locomotive outer wall, and open-cut tunnel structure and auxiliary are set so as to mitigate pneumatic load The fatigue damage applied, while the air into the first well head sprays from the second well head, and is ejected into the underface of train, to train A upward thrust is generated on car, pressure of the train vehicle body to non-fragment orbit is alleviated, the kinetic frictional resistances of train can phase It should reduce.
Brief description of the drawings
The vertical structure schematic diagram of Fig. 1 present invention.
Wherein, 1, rock mass 2, tunnel-liner 3, non-fragment orbit 4, the first well head 5, the second well head 6, Ventilation shaft.
Embodiment
With reference to Figure of description, embodiment of the present invention is illustrated.
A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel of embodiment 1, wherein the railway tunnel Road includes rock mass 1, the tunnel-liner 2 for supporting rock mass and non-fragment orbit 3, and first is provided with the top of tunnel-liner 2 or two sides Well head 4；The second well head 5 is provided with the centre of non-fragment orbit 3；Ventilation shaft 6, ventilation are set between rock mass 1 and tunnel-liner 2 The one end of pipeline 6 is connected with the first well head 4, and the other end is connected with the second well head 5, and the first well head 4, the second well head 5 and air channel 6 can be with The same longitudinal section in tunnel, the first well head 4, the second well head 5 and air channel 6 constitute air flow structure body；It is long along tunnel Degree direction is interval with air flow structure body.Adjacent air flow structure body spacing range is preferably 3-7 meters.
Embodiment 2 is on the basis of embodiment 1, and the air flow structure body close to tunnel portal is apart from hole 10-30m.
Embodiment 3 is on the basis of embodiment 1 or 2, and the cross section of the first well head 4 is circle, and at opening inwardly Orient diameter progressively reduces.
Embodiment 4 is on the basis of embodiment 3, and the cross section of the second well head 5 is circle, and towards interior diameter at opening Incrementally increase.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (2)

1. a kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel, it is characterised in that on tunnel-liner top Portion or two sides are provided with the first well head；The second well head is provided with the centre of non-fragment orbit；Set between rock mass and tunnel-liner Ventilation shaft is put, ventilation shaft one end is connected with the first well head, and the other end is connected with the second well head, the first well head, the second well head Air flow structure body is constituted with ventilation shaft；Air flow structure body is interval with along length of tunnel direction, it is adjacent Air flow structure body spacing range is 3-7m, and the cross section of first well head is circle, and at opening towards interior diameter by Step reduces, and the cross section of second well head is circle, and is incrementally increased at opening towards interior diameter.
2. a kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel as claimed in claim 1, its feature It is, the air flow structure body close to tunnel portal is apart from hole 10-30m.
CN201510021906.6A 2015-01-15 2015-01-15 A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel Active CN104727827B (en)

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CN201510021906.6A CN104727827B (en) 2015-01-15 2015-01-15 A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel

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Application Number Priority Date Filing Date Title
CN201510021906.6A CN104727827B (en) 2015-01-15 2015-01-15 A kind of railway tunnel for alleviating bullet train aerodynamic effects in tunnel

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CN104727827B true CN104727827B (en) 2017-09-08

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108438252A (en) * 2017-01-21 2018-08-24 秦赵修 A kind of heating device of high temperature drop resistance grating type pipeline
RU2683841C1 (en) * 2018-05-31 2019-04-02 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Tunnel for high-speed rolling stock
CN108930553A (en) * 2018-07-27 2018-12-04 武汉工程大学 Bullet train tunnel compressional wave relief features
CN110329321B (en) * 2019-08-13 2021-04-13 中铁西南科学研究院有限公司 Train speed control method and device and storage medium
CN111894646B (en) * 2020-06-29 2022-08-02 中铁第一勘察设计院集团有限公司 Ventilating system and ventilating method for natural ventilation of ultra-long electrified railway
CN111852499B (en) * 2020-06-30 2021-07-30 中南大学 Vertical shaft design method for magnetic suspension railway tunnel with speed per hour of more than 600km
CN111852561B (en) * 2020-07-31 2022-08-19 温州泰乐维工程设计有限公司 Tunnel piston effect control device
CN112078598B (en) * 2020-08-25 2021-10-29 温州融宸科技有限公司 Tunnel piston effect slowing device

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CN201106157Y (en) * 2007-10-29 2008-08-27 中铁二院工程集团有限责任公司 High-speed railway tunnel opening micropressure wave buffering establishment
KR20090044166A (en) * 2007-10-31 2009-05-07 한국철도기술연구원 Hood for reducing a micro-pressure wave on high-speed railway tunnel
CN201513180U (en) * 2009-09-29 2010-06-23 中铁二院工程集团有限责任公司 Micro-pressure wave-buffering tunnel wall structure of high-speed railway tunnel
CN101929339A (en) * 2010-06-22 2010-12-29 西南交通大学 Micro-pressure wave retardance structure for tunnel trunk of high-speed railway
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