CN204082162U - A kind of Railway Tunnel hole blast transition self-reacting device - Google Patents
A kind of Railway Tunnel hole blast transition self-reacting device Download PDFInfo
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- CN204082162U CN204082162U CN201420532096.1U CN201420532096U CN204082162U CN 204082162 U CN204082162 U CN 204082162U CN 201420532096 U CN201420532096 U CN 201420532096U CN 204082162 U CN204082162 U CN 204082162U
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Abstract
The utility model is a kind of Railway Tunnel hole blast transition self-reacting device, comprise along Railway Tunnel move towards arrange the self adaptation transition mechanism for the micro-pressure wave and sonic boom of alleviating Railway Tunnel hole, self adaptation transition mechanism comprises at least two group transition elements, transition element along railway tunnel move towards arrangement; Percent opening on transition element increases along Railway Tunnel near-end gradually to Railway Tunnel distal direction, progressively to alleviate micro-pressure wave and the sonic boom at Railway Tunnel hole.Blast transition self-reacting device in Railway Tunnel hole of the present utility model, self adaptation transition mechanism adopts and arranges steel structure hole body at tunnel portal and/or outlet section, and the top board of device and/or side plate adopt the steel plate of band perforate, its percent opening is along entrance orientations gradual change, until be zero, finally form the airtight enclosure device of surrounding at tunnel portal place.Can reduce by the micro-pressure wave of 90%, the harmful effect that the sonic boom preventing tunnel portal from producing causes surrounding enviroment.
Description
Technical field
The utility model relates to Railway Tunnel safeguard structure technical field, is specifically related to a kind of Railway Tunnel hole blast transition self-reacting device.
Background technology
When bullet train enters tunnel, headstock front space is restricted, and causes the air in headstock front sharply not compressed to surrounding diffusion in time and forms air compressing ripple.This compressional wave propagates into tunnel exit with velocity of sound, about 90% reflect back to tunnel portal with the form of dilatational wave, other about have the energy of 10% with the form of veiny shock wave from tunnel exit towards periphery area radiation go out, formed micro-pressure wave, this ripple is along tunnel forward direction.Along with train sails the continuous prolongation of tunnel and tunnel looped pipeline length further into, the pressure in tunnel also constantly increases, and before the peak of compressional wave, pressure is also along with continuation increases, and all to enter behind tunnel till a period of time until train.When compressional wave arrives tunnel exit place, be namely reflected into dilatational wave to import, meanwhile, produce a pulse micro-pressure wave.Train enters the compressional wave that tunnel produces, and have impact on the comfortable and healthy by bus of passenger.High-speed Railway Tunnel Exit Micro-pressure Wave can produce explosive sound in outlet, and affect the acoustic environment of tunnel exit periphery, and neighbouring lightweight structures thing (housing window) is sharply vibrated, this phenomenon is called micro-pressure wave phenomenon.Micro-pressure wave phenomenon causes serious noise pollution, and produces bad mental impact to nearby residents, larger to the harmfulness of environment.
Micro-pressure wave effect becomes the important factor in order of Railway Tunnel parameter of structure design, is therefore necessary to take measures should alleviate the minor effect of tunnel portal micro-pressure wave.The measure slowing down micro-pressure wave at present both at home and abroad mainly contains: one, above tunnel, offer vertical shaft, reduced the peak value of pressure gradient of compressional wave by vertical shaft pressure release.For the tunnel of speciality, often because buried depth is very large, To Construction of Silo difficulty is large, cost is high, and this decompression method is difficult to promote the use of.Two, expand tunnel cross-section to amass, reduce pressure by lowering blockage ratio (ratio that train basal area and tunnel cross-section amass), owing to adopting in this way, the increase of tunnel construction engineering quantity is very large, and its construction cost is high, thus uses and is also restricted.Three, improve the tightness of rolling stock, this method can only improve the environment by bus in compartment, improves the ride comfort of passenger, but can not reduce the impact of bullet train on hole external environment.Four, inclined cutout portal is built in access, tunnel, to reduce pressure peak and the pressure gradient of initial compression waves.But this method considerably increases engineering quantity and engineering cost, and effect is not too obvious.
In addition, according to measured data, when train passes through 48.6m with 200km/h
2during the single-track tunnel of effective cross-section, distance tunnel exit 10m place micro-pressure wave peak value reaches 94pa, and distance exports 20m place micro-pressure wave peak value and reaches 58.4pa.Obviously, if do not adopt fender system to cut down micro-pressure wave peak value, micro-pressure wave peak value cannot be met in the design environment requirement being less than 50pa apart from 20m place, hole.
Utility model content
In order to make up the defect of prior art, the utility model patent provides a kind of Railway Tunnel hole blast transition self-reacting device, construction is simple, engineering quantity is little, cost is low, can effectively cut down micro-pressure wave peak value again, alleviate micro-pressure wave effect, ensure the comfortableness of traveller's, reduce environmental hazard, existing for alleviating in structural measure that the minor effect of tunnel portal micro-pressure wave answers to solve, large for tunnel structure rebuilding construction difficulty, engineering quantity is large, the high impact of construction cost; Transformation is carried out for train and cannot reduce the technical problem of train for the impact of tunnel portal external environment.
In order to realize above-mentioned technical purpose, the technical scheme of the utility model patent is: a kind of Railway Tunnel hole blast transition self-reacting device, the trend comprised along Railway Tunnel arranges the self adaptation transition mechanism for the micro-pressure wave and sonic boom of alleviating Railway Tunnel hole in tunnel face, tunnel face arrange self adaptation transition mechanism comprise at least two group transition elements, transition element along railway tunnel move towards arrangement; The two-way of Railway Tunnel is all connected with self adaptation transition mechanism, and the percent opening on transition mechanism increases along Railway Tunnel near-end gradually to Railway Tunnel distal direction, progressively to alleviate micro-pressure wave and the sonic boom at Railway Tunnel hole.
Preferably, transition element comprise be bearing in rail both sides and the column be intervally arranged along the trend of Railway Tunnel, for connect the upper end of the column that rail both sides correspondence is arranged crossbeam, be laid on the side plate between adjacent two root posts and be laid on the top board on adjacent two crossbeams.
Preferably, side plate and/or top board are at least one in flat board, arc.
Preferably, side plate and/or top board are whole plate or by the stripe board that be circumferentially arranged of stripe board along Railway Tunnel.
Preferably, side plate and/or top board are provided with the stiffening rib for strengthening side plate and/or top board, for preventing Action of Wind pressure lower side panel and/or roof deformation.
Preferably, the stiffening rib for strengthening connecting portion structural strength between adjacent two pieces of stripe board is provided with between adjacent two pieces of stripe board.
Preferably, side plate and/or top board offering perforate, adjusting the percent opening of side plate and/or top board by arranging different bore size and perforate dense degree.
Preferably, the ratio of the percent opening on transition element along Railway Tunnel near-end to Railway Tunnel distal direction by 10% ~ 70% increases gradually, and the mode of increase can be that the mode of linear scale, quadratic power, cube or exponential function increases.
Preferably, it is characterized in that, the transition element near Railway Tunnel docks with the lining cutting of Railway Tunnel mouth.
Preferably, the radial dimension of self adaptation transition mechanism is increased to the far-end of Railway Tunnel gradually by the near-end of Railway Tunnel.
The beneficial effects of the utility model are:
Blast transition self-reacting device in Railway Tunnel hole of the present utility model, self adaptation transition mechanism adopts and arranges steel structure hole body at tunnel portal and/or outlet section, and the top board of device and/or side plate adopt the steel plate of band perforate, its percent opening is along entrance orientations gradual change, until be zero, finally form the airtight enclosure device of surrounding at tunnel portal place.Whole device forms blast changeover portion, thus plays the effect alleviating micro-pressure wave.The utility model device can meet strict micro-pressure wave pressure peak control criterion completely, and can reduce by the micro-pressure wave of 90%, the harmful effect that the sonic boom preventing tunnel portal from producing causes surrounding enviroment, social effect is remarkable.Meanwhile, by the external self adaptation transition mechanism of tunnel portal, without the need to expanding tunnel portal section, reduce difficulty of construction and cost.And because self adaptation transition mechanism structure is simple, globality is strong, to landform and geological condition applicability strong, easy construction, effectively can reduce hole and arrange buffer structure and the cost of production that produces, remarkable in economical benefits.This Railway Tunnel hole blast transition self-reacting device is to hole landform strong adaptability in addition, has and limits little advantage by hole landform, is particularly useful for the bridge tunnel junction that space, hole is less.
Below in conjunction with accompanying drawing, the utility model patent is described further.
Accompanying drawing explanation
Fig. 1 is one of structural representation of the Railway Tunnel hole blast transition self-reacting device of the utility model embodiment;
Fig. 2 is the structural representation two of the Railway Tunnel hole blast transition self-reacting device of the utility model embodiment;
Fig. 3 is one of structural representation of the column of the utility model embodiment;
Fig. 4 is the structural representation two of the column of the utility model embodiment;
Fig. 5 is the structural representation three of the column of the utility model embodiment;
Fig. 6 is the structural representation four of the column of the utility model embodiment;
Fig. 7 is the structural representation five of the column of the utility model embodiment;
Fig. 8 is the top board schematic diagram of the utility model embodiment;
Fig. 9 is the side plate schematic diagram of the utility model embodiment.
Wherein, 1 is column, and 2 is top board, and 3 is side plate, and 4 is perforate, 5 is crossbeam, and 6 is stiffening rib, and 8 is lining cutting, and 9 is rail, and 11 is square-section column, 12 is Q-RING cross section column, and 13 is circular cross-section column, and 14 is T-shaped cross section column, and 15 is I-shaped cross-section column.
Detailed description of the invention
Further illustrating below to the utility model patented technology content, but the restriction not to the utility model patent flesh and blood.
Fig. 1 is one of structural representation of the Railway Tunnel hole blast transition self-reacting device of the utility model embodiment; Fig. 2 is the structural representation two of the Railway Tunnel hole blast transition self-reacting device of the utility model embodiment; Fig. 3 is one of structural representation of the column of the utility model embodiment; Fig. 4 is the structural representation two of the column of the utility model embodiment; Fig. 5 is the structural representation three of the column of the utility model embodiment; Fig. 6 is the structural representation four of the column of the utility model embodiment; Fig. 7 is the structural representation five of the column of the utility model embodiment; Fig. 8 is the top board schematic diagram of the utility model embodiment; Fig. 9 is the side plate schematic diagram of the utility model embodiment.
As shown in Figure 1, the present embodiment provides a kind of Railway Tunnel hole blast transition self-reacting device, comprise along Railway Tunnel move towards arrange the self adaptation transition mechanism for the micro-pressure wave and sonic boom of alleviating Railway Tunnel hole, self adaptation transition mechanism comprises at least two group transition elements, transition element along railway tunnel move towards arrangement; Percent opening on transition element increases along Railway Tunnel near-end gradually to Railway Tunnel distal direction, progressively to alleviate micro-pressure wave and the sonic boom at Railway Tunnel hole.Blast transition self-reacting device in Railway Tunnel hole of the present utility model, self adaptation transition mechanism adopts and arranges steel structure hole body at tunnel portal and/or outlet section, and the top board 2 of device and/or side plate 3 adopt the steel plate of band perforate 4, its percent opening is along entrance orientations gradual change, until be zero, finally form the airtight enclosure device of surrounding at tunnel portal place.Whole device forms blast changeover portion, thus plays the effect alleviating micro-pressure wave.The utility model device can meet strict micro-pressure wave pressure peak control criterion completely, and can reduce by the micro-pressure wave of 90%, the harmful effect that the sonic boom preventing tunnel portal from producing causes surrounding enviroment, social effect is remarkable.And because structure is simple, globality is strong, to landform and geological condition applicability strong, easy construction, effectively can reduce hole and arrange buffer structure and the cost of production that produces, remarkable in economical benefits.This Railway Tunnel hole blast transition self-reacting device entire length is shorter in addition, takies space, hole little, to hole landform strong adaptability, has and limits little advantage by hole landform, is particularly useful for the bridge tunnel junction that space, hole is less.
As depicted in figs. 1 and 2, it is also, transition element comprises and is bearing in rail 9 both sides and the column 1 be intervally arranged along the trend of Railway Tunnel, the crossbeam 5 for connecting the upper end of the column 1 that rail 9 both sides correspondence is arranged, the top board 2 that is laid on the side plate 3 between adjacent two root posts 1 and is laid on adjacent two crossbeams 5.Fig. 3 is square-section column 11.Fig. 4 is Q-RING cross section column 12.Fig. 5 is circular cross-section column 13.Fig. 6 is T-shaped cross section column 14.Fig. 7 is I-shaped cross-section column 15.
As depicted in figs. 1 and 2, it is also, side plate 3 and/or top board 2 are at least one in flat board, arc.
As depicted in figs. 1 and 2, it is also, side plate 3 and/or top board 2 are whole plate or by the stripe board that be circumferentially arranged of stripe board along Railway Tunnel.
As depicted in figs. 1 and 2, it is also, side plate and/or top board is provided with the stiffening rib 6 for strengthening side plate 3 and/or top board 2, for preventing Action of Wind pressure lower side panel and/or roof deformation.
As depicted in figs. 1 and 2, it is also, is provided with the stiffening rib 6 for strengthening connecting portion structural strength between adjacent two pieces of stripe board between adjacent two pieces of stripe board.
As depicted in figs. 1 and 2, it is also, side plate and/or top board offer perforate 4, adjusts the percent opening of side plate and/or top board by arranging different bore size and perforate dense degree.
As depicted in figs. 1 and 2, it is also, the ratio of the percent opening on transition element along Railway Tunnel near-end to Railway Tunnel distal direction by 10% ~ 70% increases gradually.
As depicted in figs. 1 and 2, it is also, the mode that the percent opening on transition element increases along Railway Tunnel near-end to Railway Tunnel distal direction can be that the mode of linear scale, quadratic power, cube or exponential function increases;
As depicted in figs. 1 and 2, it is also, it is characterized in that, docks with the lining cutting 8 of Railway Tunnel mouth near the transition element of Railway Tunnel.
As depicted in figs. 1 and 2, it is also, the radial dimension of self adaptation transition mechanism is increased to the far-end of Railway Tunnel gradually by the near-end of Railway Tunnel.
As depicted in figs. 1 and 2, it is also, the two-way of Railway Tunnel is all connected with self adaptation transition mechanism.
During enforcement, a kind of railway tunnel hole blast transition self-reacting device is provided, comprises side uprights 1, side panel, crossbeam 5, top board 2, stiffening rib 6.Side plate 3 and top board 2 or can be welded on structural framing (column 1 and crossbeam 5 are combined to form structural framing) by reserved bolt hole bolton, the percent opening of side plate 3 and top board 2 by certain rate of change, finally forms the airtight enclosure device of surrounding along direction, tunnel face at tunnel portal place.This device docks with tunnel portal lining cutting 8, forms blast changeover portion.Train before at a high speed entering tunnel first by this changeover portion, the air compressing ripple of generation can by by device perforate 4 discharged.Tunnel portal blast transition apparatus can be rectangle hole body, also can be arch hole body, also can also be horn mouth shape.Tunnel portal blast transition apparatus structural framing cross section can be rectangle, circle, ellipse or side is linear pattern, top board 2 is arc.The top board 2 of tunnel portal blast transition apparatus can be flat shape, also can be arc, have different percent openings respectively.The percent opening of tunnel portal blast transition apparatus adjacent steel plate along its length presses the ratio increase of 10% ~ 70%.The rectangle opening 4 that the top board 2 of tunnel portal blast transition apparatus and the perforate 4 of side plate 3 can be, round hole 4, oval aperture 4, diamond shaped openings 4 or the perforate 4 of other arbitrary shapes.The side uprights 1 of tunnel portal blast transition apparatus can be square-section, square-section, T section, i shaped cross section, circular cross-section.Tunnel portal blast transition apparatus is positioned at outside tunnel portal section and is positioned at outside tunnel outlet section.At tunnel portal, transition apparatus is set with outlet is each, micro-pressure wave effect can be alleviated further.Tunnel portal blast transition apparatus docks with tunnel portal lining cutting 8 uniform section, and difficulty of construction is lower.
Fig. 1 is arch transition apparatus perspective view, and tunnel portal blast transition self-reacting device is arch hole body, and device side plate 3 is linear patterns, top board 2 is arc.This device is installed on outside tunnel portal section and is positioned at outside tunnel outlet section, docks with tunnel portal lining cutting 8.This device side column 1 is arranged on tunnel portal both sides, and be provided with stiffening rib 6 between often adjacent two root posts 1 of homonymy, curved cross member 5 is welded on column 1, and then installs side plate 3 and top board 2.Its latus inframedium 3 is the rectangle plane steel plates with different percent opening, and top board 2 is the curved plates with different percent opening.Be one section (transition element) between every two root posts 1, this device can be divided into 7 ~ 8 sections, every segment length 6m ~ 7m.Wherein can reach 90% away from the side plate 3 of the first paragraph (transition element) of tunnel portal and top board 2 percent opening, then each section of percent opening reduces with certain ratio below, until percent opening is zero, forms the airtight enclosure device of surrounding at tunnel face place.Side plate 3 and top board 2 can be assembled on side column 1 and crossbeam 5 by the mode of welding, also can pass through prepared screw-bolt hole, then assemble by the mode that bolt is fixing.
Fig. 2 is rectangular transition device perspective view, and the utility model tunnel portal blast transition self-reacting device is rectangle hole body.This device is installed on outside tunnel portal section and is positioned at outside tunnel outlet section, docks with tunnel portal lining cutting 8.This device side column 1 is arranged on tunnel portal both sides, and all arrange stiffening rib 6 between every two root posts 1 in both sides, rectangle crossbeam 5 is welded on column 1, and then installs side plate 3 and top board 2.Its latus inframedium 3 and top board 2 are all rectangle plane steel plates of different percent opening.Be one section (transition element) between every two root posts 1, this device can be divided into 7 ~ 8 sections, every segment length 6 ~ 7m.Wherein can reach 90% away from first paragraph (transition element) side plate 3 of tunnel portal and top board 2 percent opening, then each section of percent opening reduces with certain ratio below, until percent opening is zero, forms the airtight enclosure device of surrounding at tunnel face place.Side plate 3 can be assembled on side column 1 and crossbeam 5 by the mode of welding, also can pass through prepared screw-bolt hole, then assembles by the mode that bolt is fixing.
Fig. 3-Fig. 7 is rectangle column 1 respectively, square column 1, circular abutment 1, T-shaped column 1 and I-shaped column 1 schematic diagram.
Fig. 8, Fig. 9 are the structural representation of top board 2 and side plate 3 respectively, and top board and side plate are respectively arranged with the perforate 4 of different percent opening.
This Railway Tunnel hole blast transition self-reacting device is applied to Railway Tunnel engineering, and reduce micro-pressure wave effect and reach 90%, and structure is simple, easy construction, has very strong practicality.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model description to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a Railway Tunnel hole blast transition self-reacting device, it is characterized in that, comprise along Railway Tunnel move towards arrange the self adaptation transition mechanism for the micro-pressure wave and sonic boom of alleviating Railway Tunnel hole, self adaptation transition mechanism comprises at least two group transition elements, transition element along railway tunnel move towards arrangement; The two-way of Railway Tunnel is all connected with self adaptation transition mechanism, and the percent opening on transition mechanism increases along Railway Tunnel near-end gradually to Railway Tunnel distal direction, progressively to alleviate micro-pressure wave and the sonic boom at Railway Tunnel hole.
2. blast transition self-reacting device in Railway Tunnel hole according to claim 1, it is characterized in that, transition element comprise be bearing in rail both sides and the column be intervally arranged along the trend of Railway Tunnel, for connect the upper end of the column that rail both sides correspondence is arranged crossbeam, be laid on the side plate between adjacent two root posts and be laid on the top board on adjacent two crossbeams.
3. blast transition self-reacting device in Railway Tunnel hole according to claim 2, is characterized in that, side plate and/or top board are at least one in flat board, arc.
4. blast transition self-reacting device in Railway Tunnel hole according to claim 2, is characterized in that, side plate and/or top board are whole plate or by the stripe board that be circumferentially arranged of stripe board along Railway Tunnel.
5. blast transition self-reacting device in Railway Tunnel hole according to claim 2, is characterized in that, side plate and/or top board is provided with the stiffening rib for strengthening side plate and/or top board, for preventing Action of Wind pressure lower side panel and/or roof deformation.
6. blast transition self-reacting device in Railway Tunnel hole according to claim 2, is characterized in that, is provided with the stiffening rib for strengthening connecting portion structural strength between adjacent two pieces of stripe board between adjacent two pieces of stripe board.
7. blast transition self-reacting device in Railway Tunnel hole according to claim 4, is characterized in that, side plate and/or top board offer perforate, adjusts the percent opening of side plate and/or top board by arranging different bore size and perforate dense degree.
8. blast transition self-reacting device in Railway Tunnel hole according to claim 1, it is characterized in that, the ratio of percent opening on transition element along Railway Tunnel near-end to Railway Tunnel distal direction by 10% ~ 70% increases gradually, and the mode of increase can be that the mode of linear scale, quadratic power, cube or exponential function increases.
9. blast transition self-reacting device in Railway Tunnel hole according to any one of claim 1 to 8, is characterized in that, the transition element near Railway Tunnel docks with the lining cutting of Railway Tunnel mouth.
10. blast transition self-reacting device in Railway Tunnel hole according to any one of claim 1 to 8, is characterized in that, the radial dimension of self adaptation transition mechanism is increased to the far-end of Railway Tunnel gradually by the near-end of Railway Tunnel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420532096.1U CN204082162U (en) | 2014-09-17 | 2014-09-17 | A kind of Railway Tunnel hole blast transition self-reacting device |
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| CN201420532096.1U CN204082162U (en) | 2014-09-17 | 2014-09-17 | A kind of Railway Tunnel hole blast transition self-reacting device |
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| CN204082162U true CN204082162U (en) | 2015-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213926A (en) * | 2014-09-17 | 2014-12-17 | 中南大学 | Self-adaptive device for wind pressure transition of tunnel portal of high speed railway |
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- 2014-09-17 CN CN201420532096.1U patent/CN204082162U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213926A (en) * | 2014-09-17 | 2014-12-17 | 中南大学 | Self-adaptive device for wind pressure transition of tunnel portal of high speed railway |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20160917 |