CN203335088U - Horn mouth type tunnel portal structure - Google Patents
Horn mouth type tunnel portal structure Download PDFInfo
- Publication number
- CN203335088U CN203335088U CN2012207505592U CN201220750559U CN203335088U CN 203335088 U CN203335088 U CN 203335088U CN 2012207505592 U CN2012207505592 U CN 2012207505592U CN 201220750559 U CN201220750559 U CN 201220750559U CN 203335088 U CN203335088 U CN 203335088U
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- portal
- horn mouth
- tunnel portal
- tunnel
- mouth type
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Abstract
The utility model provides a horn mouth type tunnel portal structure. The horn mouth type tunnel portal structure comprises a lining structure on a tunnel portal section. The horn mouth type tunnel portal structure is characterized in that a portal is arranged on the outer side of the lining structure in a smooth butt joint mode, the portal stretches outwards, and the area of the cross section of an inner cavity of the portal becomes larger gradually towards the periphery to form a horn mouth. According to the horn mouth type tunnel portal structure, the horn mouth type tunnel portal can meet aerodynamics requirements in railway tunnel specifications, the pressure peak of a micro-pressure wave can be reduced by 20-35%, an extra special buffer structure is not needed, extra square brushing of the wall of the tunnel portal is not needed, the square brushing amount on the portal is small, the structure is simple, and the occupied space is small. In addition, due to the fact that the structure is simple and the longitudinal length is small, requirements for the terrain and geology of the tunnel portal are low, the applicability is strong, and cost is low; meanwhile, due to the fact that the portal with a diagonal plane can well prevent collapsing of a side slope and rock falling, stability is good, and the practicability is strong.
Description
Technical field
The utility model relates to the Tunnel Portal Structures field, specifically refers to a kind of horn mouth Tunnel Portal Structures.
Background technology
During High-speed Trains Passing Through Tunnel, will in tunnel, bring out a series of aerodynamic effects, wherein, most importantly transient pressure and High-speed Railway Tunnel Exit Micro-pressure Wave in tunnel.The transition meeting of pressure produces pressure differential in ear-drum, directly affects the comfortable and healthy of personnel on train, can solve by the sealing index that improves train; High-speed Railway Tunnel Exit Micro-pressure Wave can produce explosive sound in outlet, affects the acoustic environment of tunnel exit periphery, and near making, lightweight structures thing (housing window) sharply vibrates, and this phenomenon is called micro-pressure wave phenomenon.Micro-pressure wave phenomenon causes serious noise pollution, and peripheral resident is produced to the bad mental impact, larger to the harmfulness of environment.Within the micro-pressure wave effect is reduced to the scope of Design of Railway Tunnel regulation and stipulation, the designer takes the measure of optimizing the portal form, the hole buffer structure being set usually both at home and abroad.But, special buffer structure is set and not only occupies the former landform landforms in ，Dui hole, more spaces and destroy greatly, and constructional difficulties, degree of safety is low, cost is high.Therefore, optimize the attention that the portal form more and more is subject to domestic and international designer.
Traditional railway tunnel portal pattern mainly contains headwall formula, aileron formula, pillar and step, and these portal patterns can not be alleviated hole micro-pressure wave effect, and larger to destruction of surface, is unfavorable for the requirement that the current environmental protection of advocating and water are protected.Although the cap brim bias-cutting type hole-door structure can be alleviated railway tunnel hole micro-pressure wave effect, complex structure, design and construction are difficult, cost is high, poor for applicability.
Summary of the invention
The purpose of this utility model is to provide a kind of horn mouth Tunnel Portal Structures according to above-mentioned deficiency, make its have simple in structure, steadiness good, be easy to construction, cost-saving, and it is remarkable to alleviate micro-pressure wave effect effect.
The utility model is achieved by the following technical solution:
A kind of horn mouth Tunnel Portal Structures, comprise tunnel portal section liner structure, it is characterized in that: smooth-going to being connected to portal in the described liner structure outside, described portal stretches out and portal internal cavity area of section enlarges the formation horn mouth gradually to surrounding.Can effectively alleviate the aerodynamic effects at hole place, so hole do not need to arrange special buffer structure again, just can meet the aerodynamics requirement in the Design of Railway Tunnel standard.Without carry out extra brush side for the portal wall, brush side, hole amount is few, can be reduced to brush side, hole minimum.The portal resistance to overturning is good, not fragile.
Between the portal inside and outside wall, wall thickness equates.This structure is more firm.
Preferably, described portal end face is inclined cutout.Can better alleviate the micro-pressure wave effect.
Further, described portal end face is positive inclined cutout or the inclined cutout of falling.Can further alleviate the micro-pressure wave effect.
Preferably, the angle of slope between horn mouth and hole axis is 100-175 °.
Preferably, form and choose height at the vault place between the outer wall of the top of described portal and liner structure.Have good anti-slope failure, rock-fall proof function, without brim structure is set, easy construction, cost are low.
Preferably, described portal is the integral reinforced concrete pour mass, and docks with the tunnel uniform section.There is good, the non-damageable advantage of whole steadiness.
Horn mouth tunnel portal of the present utility model can meet the aerodynamics requirement in the Design of Railway Tunnel standard, the pressure peak of micro-pressure wave can be cut down to 20-35%, without special buffer structure additionally is set, without carry out extra brush side for the portal wall, brush side, hole amount is few, thus have simple in structure, little advantage takes up space.And, due to simple in structure, longitudinal length is little, low to tunnel portal landform and geologic requirements, so applicability is also strong, cost is low.The portal of scarf also has good anti-slope failure, the function of rock-fall proof simultaneously, and steadiness is good, has very strong practicality.
The accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is that master of the present utility model looks schematic diagram;
The longitudinal section schematic diagram that Fig. 3 is the positive inclined cutout of the utility model;
Fig. 4 is that the utility model falls the longitudinal section schematic diagram of inclined cutout;
The landform bank protection, 2. liner structure, 3. portal, 4. the portal inwall, 5. the portal outer wall, 6. choose height, 7. tunnel.
The specific embodiment
Further illustrate the utility model below in conjunction with accompanying drawing:
As shown in Figure 1-2, the utility model horn mouth Tunnel Portal Structures is positioned on landform bank protection 1, comprise liner structure 2 and be positioned at liner structure 2 outsides and the portal 3 of docking with it, described portal 3(comprises portal inwall 4 and portal outer wall 5) stretch out and portal internal cavity area of section enlarges gradually and forms the horn mouth shape to surrounding.And between portal 3 inside and outside walls, wall thickness equates.Can effectively alleviate the aerodynamic effects at hole place, so hole do not need to arrange special buffer structure again, just can meet the aerodynamics requirement in the Design of Railway Tunnel standard.Without carry out extra brush side for the portal wall, brush side, hole amount is few, can be reduced to brush side, hole minimum.The end face of described portal 3 is as shown in Figure 3 from down to up progressively towards tilted positive inclined cutout, or, as shown in Figure 4 from down to up progressively towards the inclined cutout of falling of outer incline, further alleviates the aerodynamic effects at place, hole.。In the situation that micro-pressure wave peak value requirement in hole is lower, also can be arranged to the vertical type portal, to simplify construction.Described portal 3 is the integral reinforced concrete pour mass, and docks with the tunnel uniform section, so the portal resistance to overturning is good, not fragile.Portal end slope angle is 100-175 °.The horn mouth expansion angle of the inside and outside wall of described portal and portal end slope angle can suitably be selected according to peripheral landform, execution conditions and train running speed.
Because portal of the present utility model 3 adopts the horn mouth shapes, therefore at the vault place of portal 3, can form higher than choosing of liner structure 2 highly by 6, make it there is good anti-slope failure, rock-fall proof function.The ring width scarf portal end platform such as of the present utility model can effectively be alleviated the aerodynamic effects at place, hole, so hole do not need to arrange special buffer structure again, just can meet the aerodynamics requirement in the Design of Railway Tunnel standard.Without carry out extra brush side for the portal wall, brush side, hole amount is few, can be reduced to brush side, hole minimum.And it is little that portal takies longitudinal space, can meet the aerodynamics requirement in the Design of Railway Tunnel standard, can take full advantage of the former earth's surface of tunnel portal stable side slope and vegetation, brush side, hole amount is few.Portal structure described in the utility model is the integral reinforced concrete pour mass, and portal outer wall 5 docks with the tunnel uniform section, so the portal resistance to overturning is good, not fragile.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a horn mouth Tunnel Portal Structures, comprise tunnel portal section liner structure, it is characterized in that: smooth-going to being connected to portal in the described liner structure outside, described portal stretches out and portal internal cavity area of section enlarges the formation horn mouth gradually to surrounding.
2. horn mouth Tunnel Portal Structures according to claim 1, it is characterized in that: between the portal inside and outside wall, wall thickness equates.
3. horn mouth Tunnel Portal Structures according to claim 1, it is characterized in that: described portal end face is inclined cutout.
4. horn mouth Tunnel Portal Structures according to claim 3, it is characterized in that: described portal end face is positive inclined cutout or the inclined cutout of falling.
5. horn mouth Tunnel Portal Structures according to claim 1, it is characterized in that: the angle of slope between horn mouth and hole axis is 100-175 °.
6. horn mouth Tunnel Portal Structures according to claim 1, it is characterized in that: described portal is the integral reinforced concrete pour mass, and docks with the tunnel uniform section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207505592U CN203335088U (en) | 2012-12-31 | 2012-12-31 | Horn mouth type tunnel portal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207505592U CN203335088U (en) | 2012-12-31 | 2012-12-31 | Horn mouth type tunnel portal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335088U true CN203335088U (en) | 2013-12-11 |
Family
ID=49703766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207505592U Expired - Lifetime CN203335088U (en) | 2012-12-31 | 2012-12-31 | Horn mouth type tunnel portal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335088U (en) |
-
2012
- 2012-12-31 CN CN2012207505592U patent/CN203335088U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |