CN103016025A - Buffer structure of double-track tunnel portal of high-speed rail - Google Patents
Buffer structure of double-track tunnel portal of high-speed rail Download PDFInfo
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- CN103016025A CN103016025A CN2012105948622A CN201210594862A CN103016025A CN 103016025 A CN103016025 A CN 103016025A CN 2012105948622 A CN2012105948622 A CN 2012105948622A CN 201210594862 A CN201210594862 A CN 201210594862A CN 103016025 A CN103016025 A CN 103016025A
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Abstract
The invention provides a buffer structure of a double-track tunnel portal of a high-speed rail. The buffer structure is characterized in that the buffer structure is used for the double-track tunnel of the high-speed rail and is a rectangular hole body lining and butting with the tunnel portal, the rectangular hole body is positioned at the outer side of the tunnel portal, and the cross section of the rectangular hole body is rectangular; one to five openings are arranged at the top part of the rectangular hole body in the length direction of the rectangular hole body, and the area ratio of the total area of the openings and the area of the hollow cross section of a portal lining is 30-90 percent; and the area of the openings arranged in the length direction of the rectangular hole body is gradually reduced to the tunnel portal direction according to 50-90 percent. The buffer structure can effectively relieve the micro-pressure wave phenomenon of the tunnel portal of the high-speed rail and prevents the sonic boom generated by the tunnel portal from generating bad influence on surroundings, and the social effect is significant. As the buffer structure has the advantages of simple structure, strong integrity, strong applicability to terrain and geological conditions and convenience in construction, the production cost caused by the buffer structure arranged at the portal can be effectively reduced, and the economic benefit is significant.
Description
Technical field
The present invention relates to the Railway Tunnel field, specifically refer to a kind of high-speed railway double 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 in time sharply not compressed formation air compressing ripple to diffusion all around.This compressional wave propagates into tunnel exit with velocity of sound, and about 90% the form with dilatational wave reflects back to tunnel portal, other have approximately 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 so that problems such as near the rapid vibrations 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 transforms tunnel structure and optimizes the train shape.Change portal form and the hole buffer structure is set of the measure of transforming tunnel structure.
But when near the environment hole requirements at the higher level being arranged, when near the tunnel portal building being arranged, existing hole buffer structure can't satisfy strict micro-pressure wave pressure peak control criterion.
Summary of the invention
The objective of the invention is provides a kind of high-speed railway single-track tunnel hole buffer structure according to above-mentioned deficiency, and this buffer structure goes for the two-wire long tunnel, and it is good to alleviate the micro-pressure wave peak effect.
The present invention is achieved through the following technical solutions:
A kind of high-speed railway double track tunnel hole buffer structure, it is characterized in that: described buffer structure 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, top at rectangle hole body arranges 1-5 opening along rectangle hole body length direction, the Area Ratio of empty cross-sectional area is 30-90% in the opening gross area and the 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 before entering the tunnel at a high speed, thereby reaches the effect of alleviating micro-pressure wave.
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 the body generation of rectangle hole 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.At 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.
Preferably, described tunnel portal is cap brim bias-cutting type hole-door.This portal also can play the effect of alleviating the micro-pressure wave effect.
Buffer structure of the present invention adopts and at tunnel portal and outlet section rectangle hole body is set, and offers the opening of big or small gradual change at rectangle hole body, plays the effect of alleviating micro-pressure wave.Buffer structure of the present invention can effectively be alleviated long tunnel, the micro-pressure wave effect at the long tunnel hole of the board-like railway roadbed of concrete sleeper especially, and applicability is wider, can reduce by 80% micro-pressure wave.The micro-pressure wave phenomenon at Railway Tunnel hole can be effectively alleviated in the present invention, prevents the harmful effect that sonic boom that tunnel portal produces causes surrounding enviroment, and social effect is remarkable.Because 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 invention;
Fig. 2 is tunnel portal section rectangle of the present invention hole body schematic top plan view;
Fig. 3 is tunnel portal section rectangle of the present invention hole body longitudinal sectional view;
1. tunnel portal rectangle hole body, 2. cap brim bias-cutting type hole-door, 3. opening, 4. lining cutting, 5-9. the first opening to the five openings.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing:
As Figure 1-3, high-speed railway double track tunnel of the present invention hole buffer structure is the rectangle hole body 1 of rectangle for cross section that dock with tunnel portal lining cutting 4 and that be positioned at the tunnel portal outside, and along rectangle hole body length direction 5 openings being set at the top of tunnel portal rectangle hole body 1 is the first opening 5 to the 5th openings 9.The Area Ratio of empty cross-sectional area is 30-90% in the opening gross area and the hole lining cutting, can farthest alleviate hole micro-pressure wave effect like this.The area of each opening 3 of arranging along described rectangle hole body 1 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 60m.Rectangle hole body is that integral reinforced concrete is built body, and it is more convenient to construct, and steadiness is better, and degree of safety is high.The length of the first opening 5 is 6m, wide 3m; The length of the second opening 6 is 4.2m, wide 3m; The length of the 3rd opening 7 is 3.6m, wide 3m; The length of the 4th opening 8 is 3m, wide 3m; The length of the 5th opening 9 is 2.2m, wide 3m.Described aperture pitch c is increased by rectangle hole body to lining cutting along rectangle hole body length direction.The area of section of described tunnel portal rectangle hole body 1 and tunnel exit rectangle hole body 2 and tunnel portal lining cutting 4 area of section equal and opposite in directions are so more saved the space, are suitable for various tunnels.Tunnel portal is cap brim bias-cutting type hole-door.Can farthest alleviate the micro-pressure wave effect like this.
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 only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. high-speed railway double track tunnel hole buffer structure, it is characterized in that: described buffer structure is used for the high-speed railway double track tunnel, for the cross section that docks with the tunnel portal lining cutting and be positioned at the tunnel portal outside is the rectangle hole body of rectangle, top at rectangle hole body arranges 1-5 opening along rectangle hole body length direction, the Area Ratio of empty cross-sectional area is 30-90% in the opening gross area and the 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. described high-speed railway double track tunnel hole buffer structure according to claim 1 is characterized in that: describedly increase gradually 1.1-1.5 along rectangle hole body length direction adjacent apertures spacing towards the tunnel portal direction doubly.
3. described high-speed railway double track tunnel hole buffer structure according to claim 1, it 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. described high-speed railway double track tunnel hole buffer structure according to claim 1, it is characterized in that: described rectangle hole body docks with tunnel portal lining cutting uniform section.
5. described high-speed railway double track tunnel hole buffer structure according to claim 1, it is characterized in that: described tunnel portal is cap brim bias-cutting type hole-door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105948622A CN103016025A (en) | 2012-12-31 | 2012-12-31 | Buffer structure of double-track tunnel portal of high-speed rail |
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| CN2012105948622A CN103016025A (en) | 2012-12-31 | 2012-12-31 | Buffer structure of double-track tunnel portal of high-speed rail |
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| CN103016025A true CN103016025A (en) | 2013-04-03 |
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| CN2012105948622A Pending CN103016025A (en) | 2012-12-31 | 2012-12-31 | Buffer structure of double-track tunnel portal of high-speed rail |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470269A (en) * | 2013-10-17 | 2013-12-25 | 铁道第三勘察设计院集团有限公司 | Break joint-type efficient buffer structure of high-speed railway tunnel portal |
| CN107387111A (en) * | 2017-08-17 | 2017-11-24 | 中铁第四勘察设计院集团有限公司 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
| 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 |
| CN111236960A (en) * | 2020-01-22 | 2020-06-05 | 昆明理工大学 | Buffer structure for relieving micro-pressure waves at tunnel portal of high-speed railway |
| CN112282786A (en) * | 2020-11-06 | 2021-01-29 | 太原理工大学 | Micro-pressure wave retarding method for long and large tunnel of high-speed railway |
| CN112814696A (en) * | 2021-03-16 | 2021-05-18 | 河北工程大学 | Design optimization method of inclined tunnel entrance buffer structure |
| CN114165253A (en) * | 2021-11-10 | 2022-03-11 | 中铁二院工程集团有限责任公司 | Double-layer gradually-changed hole buffer structure for tunnel portal of ultrahigh-speed railway |
| CN114837689A (en) * | 2022-05-10 | 2022-08-02 | 中南大学 | Tunnel micro-pressure wave relieving method based on incident space angle |
| CN114837690A (en) * | 2022-05-26 | 2022-08-02 | 中南大学 | Tunnel micro-pressure wave relieving method based on pressure relief space angle |
| 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 |
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| CN203008926U (en) * | 2012-12-31 | 2013-06-19 | 中铁第四勘察设计院集团有限公司 | High-speed railway double-track tunnel portal buffer structure |
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2012
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| JPH08135381A (en) * | 1994-11-15 | 1996-05-28 | Okada Toshio | Impact relaxation device of tunnel entrance |
| 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 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470269B (en) * | 2013-10-17 | 2016-08-24 | 铁道第三勘察设计院集团有限公司 | Seam high efficiency buffer structure between Railway Tunnel hole |
| CN103470269A (en) * | 2013-10-17 | 2013-12-25 | 铁道第三勘察设计院集团有限公司 | Break joint-type efficient buffer structure of high-speed railway tunnel portal |
| CN107387111A (en) * | 2017-08-17 | 2017-11-24 | 中铁第四勘察设计院集团有限公司 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
| 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 |
| CN111236960A (en) * | 2020-01-22 | 2020-06-05 | 昆明理工大学 | Buffer structure for relieving micro-pressure waves at tunnel portal of high-speed railway |
| CN112282786B (en) * | 2020-11-06 | 2023-02-28 | 太原理工大学 | Micro-pressure wave retarding method for long and large tunnel of high-speed railway |
| CN112282786A (en) * | 2020-11-06 | 2021-01-29 | 太原理工大学 | Micro-pressure wave retarding method for long and large tunnel of high-speed railway |
| CN112814696A (en) * | 2021-03-16 | 2021-05-18 | 河北工程大学 | Design optimization method of inclined tunnel entrance buffer structure |
| CN112814696B (en) * | 2021-03-16 | 2023-01-31 | 河北工程大学 | Design optimization method of inclined cut type tunnel entrance buffer structure |
| CN114165253A (en) * | 2021-11-10 | 2022-03-11 | 中铁二院工程集团有限责任公司 | Double-layer gradually-changed hole buffer structure for tunnel portal of ultrahigh-speed railway |
| CN114837689A (en) * | 2022-05-10 | 2022-08-02 | 中南大学 | Tunnel micro-pressure wave relieving method based on incident space angle |
| CN114837690A (en) * | 2022-05-26 | 2022-08-02 | 中南大学 | Tunnel micro-pressure wave relieving method based on pressure relief space angle |
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Application publication date: 20130403 |