CN203008927U - High-speed railway single-track tunnel portal buffer structure - Google Patents
High-speed railway single-track tunnel portal buffer structure Download PDFInfo
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- CN203008927U CN203008927U CN 201220750597 CN201220750597U CN203008927U CN 203008927 U CN203008927 U CN 203008927U CN 201220750597 CN201220750597 CN 201220750597 CN 201220750597 U CN201220750597 U CN 201220750597U CN 203008927 U CN203008927 U CN 203008927U
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- speed railway
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Abstract
The utility model provides a high-speed railway single-track tunnel portal buffer structure, which is characterized in that the buffer structure is used for a high-speed railway single-track tunnel, and is a rectangular body with a rectangular cross section butted with a tunnel portal lining and located at the outer side of a tunnel portal; 1-8 openings are formed at the top of the rectangular body along the length direction of the rectangular body; the ratio of the total area of the openings to the cross sectional area in the portal lining is 0.75-2; and the areas of the openings distributed along the length direction of the rectangular body gradually reduce towards the tunnel portal direction by 50-90%. The high-speed railway single track tunnel portal buffer structure can effectively alleviate the phenomenon of micro-pressure waves at the high-speed railway tunnel portal, prevents sonic boom generated at the tunnel portal from affecting the surrounding environment, and has significant social effects. As the buffer structure is simple in structure, good in integrity, highly applicable to terrain and geological conditions and convenient for construction, the production cost caused by arrangement of the buffer structure at the portal can be effectively reduced, and remarkable economical effects are achieved.
Description
Technical field
The utility model relates to the Railway Tunnel field, specifically refers to a kind of high-speed railway single-track tunnel hole buffer structure.
Background technology
When bullet train entered the tunnel, the headstock front space was restricted, and caused the air in headstock the place ahead can not be in time to be formed the air compressing ripple to the surrounding diffusion by compression sharply.This compressional wave propagates into tunnel exit with velocity of sound, and approximately 90% the form with dilatational wave reflects back to tunnel portal, other approximately have 10% energy with the form of veiny shock wave from tunnel exit towards periphery area radiation go out, form micro-pressure wave.The micro-pressure wave effect is crossed, and can to produce by force the Pneumatical Blowing noise be the tunnel sonic boom, and make near the sharply problem such as vibration of lightweight structures (house window), cause noise pollution, peripheral resident is produced the bad mental impact, harmfulness to the human settlement is larger, become the important factor in order of Railway Tunnel parameter of structure design, the minor effect that therefore is necessary to take measures to the tunnel portal micro-pressure wave should be alleviated.The measure that slows down at present micro-pressure wave both at home and abroad comprises the transformation tunnel structure and optimizes the train shape.Change portal form and the hole buffer structure is set of the measure of transformation tunnel structure.
But existing hole buffer structure is mainly to be 100m for the above effective area of rail level
2The large section double track tunnel design of left and right, and for 65m
2The light section single-track tunnel of left and right is also inapplicable.And existing hole buffer structure can only be controlled at the outer 20m of tunnel portal place micro-pressure wave peak value in 50Pa, can't satisfy strict micro-pressure wave pressure peak control criterion.
Summary of the invention
The purpose of this utility model is to provide a kind of high-speed railway single-track tunnel hole buffer structure according to above-mentioned deficiency, and this buffer structure goes for the light section single-track tunnel, and it is good to alleviate the micro-pressure wave peak effect.
The utility model is achieved by the following technical solution:
A kind of high-speed railway single-track tunnel hole buffer structure, it is characterized in that: described buffer structure for dock with the tunnel portal lining cutting and be positioned at the rectangle hole body that cross section outside tunnel portal is rectangle, along rectangle hole body length direction, 1-8 opening is set at the top of rectangle hole body, the Area Ratio of empty cross-sectional area is 0.75-2 in the opening gross area and hole lining cutting, and the area of each opening of arranging along described rectangle hole body length direction reduces according to 50-90% gradually towards the tunnel portal direction.First by rectangle hole body, the air compressing ripple of generation can be discharged by the opening by body top, rectangle hole train, thereby reaches the effect of alleviating micro-pressure wave before at a high speed entering the tunnel.
Preferably, describedly increase gradually 1.1-1.5 along rectangle hole body length direction adjacent apertures spacing towards the tunnel portal direction doubly.The micro-pressure wave that train enters at a high speed rectangle hole body generation reduces gradually along the length of tunnel direction, so this structure makes alleviation micro-pressure wave effect better effects if.
Preferably, described rectangle hole body is positioned at the tunnel portal section outside and/or is positioned at the tunnel outlet section outside.In tunnel portal and outlet, rectangle hole body with opening is set respectively, can further alleviates the micro-pressure wave effect.
Preferably, described rectangle hole body docks with tunnel portal lining cutting uniform section.Difficulty of construction is lower.
Buffer structure of the present utility model adopts at tunnel portal and outlet section rectangle hole body is set, and offers the opening of big or small gradual change on the body of rectangle hole, plays the effect of alleviating micro-pressure wave.Even the utility model is larger for the tunnel blockage ratio ratio of tunnel cross-sectional area (train head with), long-pending less, train speed is higher (300-350km/h) the single line Railway Tunnel of tunnel cross-section, also can satisfy strict micro-pressure wave pressure peak control criterion fully, can reduce by 80% micro-pressure wave.The utility model can effectively be alleviated the micro-pressure wave phenomenon at Railway Tunnel hole, prevents the harmful effect that sonic boom that tunnel portal produces causes surrounding enviroment, and social effect is remarkable.Due to simple in structure, globality is strong, and is strong to landform and geological condition applicability, and easy construction can reduce effectively that the hole arranges buffer structure and the cost of production that produces, remarkable in economical benefits.
Description of drawings
Fig. 1 is perspective view of the present utility model;
Fig. 2 is tunnel portal section rectangle of the present utility model hole body schematic top plan view;
Fig. 3 is tunnel outlet section rectangle of the present utility model hole body schematic top plan view;
1. tunnel portal rectangle hole body, 2. tunnel exit rectangle hole body, 3. opening, 4. lining cutting, 5-14. the first opening to the ten openings.
The specific embodiment
Further illustrate the utility model below in conjunction with accompanying drawing:
As Figure 1-3, the utility model high-speed railway single-track tunnel hole buffer structure is for that dock with tunnel portal lining cutting 4 and be positioned at the rectangle hole body 1 that cross section outside tunnel portal is rectangle, at the top of tunnel portal rectangle hole body 1 along rectangle hole body length direction arrange 8 openings 3 namely the first opening 5 to octavo mouth 12, along tunnel midline length direction, 2 openings 3 i.e. the 9th opening 13 and the tenth opening 14 are set at the top of tunnel exit rectangle hole body 2.The Area Ratio of empty cross-sectional area is 0.75-2 in the opening gross area and hole lining cutting, and the area of each opening 3 of arranging along described rectangle hole body length direction reduces according to 50-90% gradually towards the tunnel portal direction.
Preferably, the hole body length of tunnel portal rectangle hole body 1 is 100m, and the hole body length of tunnel exit rectangle hole body 2 is 40m.Rectangle hole body is that integral reinforced concrete waters building body, constructs more convenient, and steadiness is better, and degree of safety is high.Can farthest alleviate hole micro-pressure wave effect like this.Described the first opening 5 reduces towards the tunnel direction along rectangle hole body length direction gradually to the length a of octavo mouth 12.The length of the tenth opening 14 is also greater than the length of the 9th opening 13.The length of the first opening 5 is 8m, wide 3.2m; The length of the second opening 6 is 8m, wide 2m; The length of the 3rd opening 7 is 6m, wide 2m; The length of the 4th opening 8 is 5m, wide 2m; The length of the 5th opening 9 is 4m, wide 2m; The length of the 6th opening 10 is 3.2m, wide 2m; The length of minion mouth 11 is 2.7m, wide 2m; The length of octavo mouth 12 is 2.2m, wide 2m; The length of the 9th opening 13 is 6m, wide 1.6m; The length of the tenth opening 14 is 8m, wide 1.6m.Describedly increase gradually towards the tunnel portal direction along rectangle hole body length direction adjacent apertures spacing c.Area of section and the tunnel portal lining cutting 4 area of section equal and opposite in directions of described tunnel portal rectangle hole body 1 and tunnel exit rectangle hole body 2 are so more saved the space, are suitable for various tunnels.
This buffer structure is applied to high-speed railway single-track tunnel engineering, and reduce the micro-pressure wave effect and reach 80%, and simple in structure, easy construction has very strong practicality.
The above is only preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. high-speed railway single-track tunnel hole buffer structure, it is characterized in that: described buffer structure is used for the high-speed railway single-track tunnel, it is the rectangle hole body of rectangle for the cross section that docks with the tunnel portal lining cutting and be positioned at the tunnel portal outside, along rectangle hole body length direction, 1-8 opening is set at the top of rectangle hole body, the Area Ratio of empty cross-sectional area is 0.75-2 in the opening gross area and hole lining cutting, and the area of each opening of arranging along described rectangle hole body length direction reduces according to 50-90% gradually towards the tunnel portal direction.
2. high-speed railway single-track tunnel hole buffer structure according to claim 1 is characterized in that: describedly increase gradually 1.1-1.5 doubly along rectangle hole body length direction adjacent apertures spacing towards the tunnel portal direction.
3. high-speed railway single-track tunnel hole buffer structure according to claim 1 is characterized in that: described rectangle hole body is positioned at the tunnel portal section outside and/or is positioned at the tunnel outlet section outside.
4. high-speed railway single-track tunnel hole buffer structure according to claim 1 is characterized in that: described rectangle hole body docks with tunnel portal lining cutting uniform section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220750597 CN203008927U (en) | 2012-12-31 | 2012-12-31 | High-speed railway single-track tunnel portal buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220750597 CN203008927U (en) | 2012-12-31 | 2012-12-31 | High-speed railway single-track tunnel portal buffer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008927U true CN203008927U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220750597 Expired - Lifetime CN203008927U (en) | 2012-12-31 | 2012-12-31 | High-speed railway single-track tunnel portal buffer structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN203008927U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016024A (en) * | 2012-12-31 | 2013-04-03 | 中铁第四勘察设计院集团有限公司 | Buffer structure of single-track tunnel portal of high-speed rail |
| CN104564098A (en) * | 2013-10-21 | 2015-04-29 | 韩国铁道技术研究院 | Structure for reducing tunnel micro pressure wave including air pipe |
-
2012
- 2012-12-31 CN CN 201220750597 patent/CN203008927U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016024A (en) * | 2012-12-31 | 2013-04-03 | 中铁第四勘察设计院集团有限公司 | Buffer structure of single-track tunnel portal of high-speed rail |
| CN104564098A (en) * | 2013-10-21 | 2015-04-29 | 韩国铁道技术研究院 | Structure for reducing tunnel micro pressure wave including air pipe |
| CN104564098B (en) * | 2013-10-21 | 2017-09-26 | 韩国铁道技术研究院 | Include the structure of breather pipe for reduce tunnel micro-pressure wave |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160422 Address after: 430063 Wuchang, Hubei, Yang Park, Heping Avenue, No. 745 Patentee after: Wuhan Construction Engineering Consulting Co.,Ltd. Address before: Tiesiyuan Technology Center No. 745 Yang Park Peace Avenue 430080 in Hubei province Wuhan city Wuchang District Patentee before: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |