CN208137949U - A kind of microbarometric wave at Railway Tunnel hole slows down construction - Google Patents
A kind of microbarometric wave at Railway Tunnel hole slows down construction Download PDFInfo
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- CN208137949U CN208137949U CN201721770419.0U CN201721770419U CN208137949U CN 208137949 U CN208137949 U CN 208137949U CN 201721770419 U CN201721770419 U CN 201721770419U CN 208137949 U CN208137949 U CN 208137949U
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Abstract
A kind of microbarometric wave at Railway Tunnel hole slows down construction, slows down hole microbarometric wave with more efficiently.Hole body extension section including butting up against tunnel portal extends along setting exhaust pipe in direction interval in the hole body extension section, and the inner port of each exhaust pipe is connected with the inner space of hole body extension section, and external port leads to outside atmosphere space.The exhaust pipe forms stretching structure by least two sections of tube bodies being nested, and is provided with side opening, headstock gear is arranged at side opening.
Description
Technical field
The utility model relates to high-speed railway, in particular to a kind of microbarometric wave at Railway Tunnel hole slows down structure
It makes.
Background technique
When High-speed Trains Passing Through Tunnel, initial compression waves can be formed in Chinese herbaceous peony, which is propagated forward with local velocity of sound,
It reaches at tunnel exit, most of energy is reflected back toward in tunnel in the form of dilatational wave, and small part is with the shape of low frequency pulse wave
Formula forms shock wave to external radiation.If the intensity of the shock wave is sufficiently large, Pneumatical Blowing can be generated at tunnel portal and made an uproar
Sound causes the low frequency high vibration of lightweight construction object locomotive window, housing window around hole, influences nearby buildings and resident
Normal life.Country《Railway Tunnel design specification》Middle regulation, micro- air pressure amplitude at the outer 20m of tunnel portal cannot surpass
Cross 50Pa.
Currently, hole buffer structure is arranged usually in terms of civil engineering to alleviate the micro- gas of tunnel portal in designer both at home and abroad
Pressure.Hole buffer structure is the hole body extension section extended outward to form by tunnel portal section lining cutting, by expanding the disconnected of extension
Face area arranges opening to alleviate micro- air pressure in the body extension section of hole.The action principle of enlarged openings type buffer structure is first is that increase
Add compressed waveform at time, to reduce its barometric gradient；Second is that extruding train front and ambient air are discharged from opening,
To achieve the purpose that shunting.But the shortcomings that this buffer structure is not play transmitted wave to slow down work to initial compression waves
With, to microbarometric wave to slow down effect slightly worse.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of microbarometric waves at Railway Tunnel hole to slow down
Construction, slows down hole microbarometric wave with more efficiently.
It is as follows that the utility model solves technical solution used by its technical problem：
A kind of microbarometric wave at Railway Tunnel hole of the utility model slows down construction, including butts up against tunnel portal
Hole body extension section, it is characterized in that：Extended along in the hole body extension section direction interval setting exhaust pipe, each exhaust pipe it is interior
Port is connected with the inner space of hole body extension section, and external port leads to outside atmosphere space；The exhaust pipe is by least two sections
The tube body being nested forms stretching structure, is provided with side opening, headstock gear is arranged at side opening.
The utility model has the beneficial effects that more efficiently hole microbarometric wave can be slowed down, improve close to buildings and
The environmental quality of resident；When train speed is adjusted, the length of adjustable exhaust pipe or position or the number for changing side opening
Amount achievees the purpose that effectively to slow down microbarometric wave.
Detailed description of the invention
This specification includes following five width attached drawing：
Fig. 1 is that a kind of structure that the microbarometric wave at Railway Tunnel hole slows down constructed embodiment 1 of the utility model is shown
It is intended to；
Fig. 2 is that a kind of structure that the microbarometric wave at Railway Tunnel hole slows down constructed embodiment 2 of the utility model is shown
It is intended to；
Fig. 3 is that a kind of structure that the microbarometric wave at Railway Tunnel hole slows down constructed embodiment 3 of the utility model is shown
It is intended to；
Fig. 4 is that a kind of structure that the microbarometric wave at Railway Tunnel hole slows down constructed embodiment 4 of the utility model is shown
It is intended to；
Fig. 5 is that a kind of structure that the microbarometric wave at Railway Tunnel hole slows down constructed embodiment 5 of the utility model is shown
It is intended to；
Component and corresponding label are shown in figure：Tunnel 10, hole body extension section 11, exhaust pipe 20, side opening 21.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to Fig.1, the utility model
A kind of microbarometric wave at Railway Tunnel hole of the utility model slows down construction, including butts up against 10 hole of tunnel
The hole body extension section 11 of mouth.Setting exhaust pipe 20 in direction interval is extended along in the hole body extension section 11, each exhaust pipe 20
Inner port is connected with the inner space of hole body extension section 11, and external port leads to outside atmosphere space.Train drives into hole body extension
After section 11, a part of compressional wave enters in exhaust pipe 20, and the compressional wave a part for entering exhaust pipe 20 is discharged to hole body extension
Outside section 11, another part forms transmitted wave in 20 end of exhaust pipe and returns in hole body extension section 11 to slow down the intensity of compressional wave
And barometric gradient.Referring to Fig. 3, Fig. 4 and Fig. 5, the exhaust pipe 20 forms stretching structure by least two sections of tube bodies being nested,
It is provided with side opening 21, headstock gear is set at side opening 21.When train speed is adjusted, adjustable exhaust pipe 20
The position or quantity of length or change side opening 21 achieve the purpose that effectively to slow down microbarometric wave.
The hole body extension section 11 is cross-section structure, and cross-sectional area is 1.4 times to 1.55 of 10 cross-sectional area of tunnel
Times.Train speed is bigger, the setting quantity of exhaust pipe 20 should more or exhaust pipe 20 spacing answer it is smaller, in combination with train
Speed and train nose shape, which calculate, to be determined.
Referring to FIG. 1, FIG. 2 and FIG. 4, the exhaust pipe 20 upper equidistant interval setting at the top of hole body extension section 11.Referring to figure
2, the top of the exhaust pipe 20 has bending segment of its external port towards 11 side of hole body extension section, stifled to avoid massif falling rocks
Rainwater enters inside hole body extension section 11 along exhaust pipe 20 when filling in 20 rainfall of exhaust pipe.Referring to Fig.1, Fig. 4 and Fig. 5, the exhaust
The length of pipe 20 successively increases from 11 import of hole body extension section to 10 hole of tunnel.
Referring to Fig. 3, the exhaust pipe 20 is arranged in 11 side of hole body extension section or two sides equidistant interval.
The utility model a kind of microbarometric wave at Railway Tunnel hole described above that only explains through diagrams slows down structure
The some principles made are not intended to shown in being confined to the utility model and in the specific structure and the scope of application, therefore all
It is all corresponding modifications that may be utilized and equivalent, belongs to the applied the scope of the patents of the utility model.
Claims (6)
1. a kind of microbarometric wave at Railway Tunnel hole slows down construction, the hole body extension including butting up against tunnel (10) hole
Section (11), it is characterized in that：Direction interval setting exhaust pipe (20), each exhaust pipe are extended along on the hole body extension section (11)
(20) inner port is connected with the inner space of hole body extension section (11), and external port leads to outside atmosphere space；The exhaust
It manages (20) and forms stretching structure by least two sections of tube bodies being nested, be provided with side opening (21), be arranged at side opening (21) and open
Close device.
2. a kind of microbarometric wave at Railway Tunnel hole as described in claim 1 slows down construction, it is characterized in that：The hole
Body extension section (11) is cross-section structure, and cross-sectional area is 1.4 times to 1.55 times of tunnel (10) cross-sectional area.
3. a kind of microbarometric wave at Railway Tunnel hole as described in claim 1 slows down construction, it is characterized in that：The row
The length of tracheae (20) successively increases from hole body extension section (11) import to tunnel (10) hole.
4. a kind of microbarometric wave at Railway Tunnel hole as described in claim 1 slows down construction, it is characterized in that：The row
Tracheae (20) equidistant interval on hole body extension section (11) top is arranged.
5. a kind of microbarometric wave at Railway Tunnel hole as claimed in claim 4 slows down construction, it is characterized in that：The row
The top of tracheae (20) has bending segment of its external port towards hole body extension section (11) side.
6. a kind of microbarometric wave at Railway Tunnel hole as described in claim 1 slows down construction, it is characterized in that：The row
Tracheae (20) is arranged in hole body extension section (11) side or two sides equidistant interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770419.0U CN208137949U (en) | 2017-12-18 | 2017-12-18 | A kind of microbarometric wave at Railway Tunnel hole slows down construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770419.0U CN208137949U (en) | 2017-12-18 | 2017-12-18 | A kind of microbarometric wave at Railway Tunnel hole slows down construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208137949U true CN208137949U (en) | 2018-11-23 |
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ID=64283163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721770419.0U Active CN208137949U (en) | 2017-12-18 | 2017-12-18 | A kind of microbarometric wave at Railway Tunnel hole slows down construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828441A (en) * | 2020-07-28 | 2020-10-27 | 温州泰乐维工程设计有限公司 | Air oscillation controller for railway tunnel |
| CN112078598A (en) * | 2020-08-25 | 2020-12-15 | 温州融宸科技有限公司 | Tunnel piston effect slowing device |
| CN115522951A (en) * | 2022-10-25 | 2022-12-27 | 西南交通大学 | Transverse passage low-air-pressure control high-speed rail tunnel micro-air-pressure wave structure and control method |
-
2017
- 2017-12-18 CN CN201721770419.0U patent/CN208137949U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828441A (en) * | 2020-07-28 | 2020-10-27 | 温州泰乐维工程设计有限公司 | Air oscillation controller for railway tunnel |
| CN112078598A (en) * | 2020-08-25 | 2020-12-15 | 温州融宸科技有限公司 | Tunnel piston effect slowing device |
| CN112078598B (en) * | 2020-08-25 | 2021-10-29 | 温州融宸科技有限公司 | Tunnel piston effect slowing device |
| CN115522951A (en) * | 2022-10-25 | 2022-12-27 | 西南交通大学 | Transverse passage low-air-pressure control high-speed rail tunnel micro-air-pressure wave structure and control method |
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