CN203230427U - Constant annular width beveling-type tunnel portal structure - Google Patents
Constant annular width beveling-type tunnel portal structure Download PDFInfo
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- CN203230427U CN203230427U CN 201220749040 CN201220749040U CN203230427U CN 203230427 U CN203230427 U CN 203230427U CN 201220749040 CN201220749040 CN 201220749040 CN 201220749040 U CN201220749040 U CN 201220749040U CN 203230427 U CN203230427 U CN 203230427U
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- portal
- tunnel portal
- wall
- tunnel
- end platform
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Abstract
The utility model provides a constant annular width beveling-type tunnel portal structure comprising a tunnel portal section lining structure, the outer end of the lining structure is smoothly in a butt joint with a tunnel portal, the wall thicknesses of an inner wall and an outer wall of the tunnel portal are equal, and a tunnel portal end table is provided at the entrance of the tunnel portal. The inner wall of the tunnel portal end table is an extension of the inner wall of the tunnel portal, the outer wall of the tunnel portal end table is a bevel whose tilt direction is contrary to the tilt direction of an outer end face of the tunnel portal, and is connected with the outer wall of the tunnel portal. The tunnel portal end table is a constant width annular tunnel portal end table, and the wall thicknesses of the inner wall and the outer wall are the same along the annular direction. The constant annular width beveling-type tunnel portal structure is advantaged by simple structure, small occupation space, economical and low cost, small impact on the environment, and high applicability. Meanwhile, the tunnel portal structure has excellent functions of preventing slope collapse and stone falling, the stability is good, the aerodynamic micro-pressure wave effect of the tunnel can be effectively mitigated, and extremely high practicality is achieved.
Description
Technical field
The utility model relates to the Tunnel Portal Structures field, specifically refers to ring width inclined cutout Tunnel Portal Structures such as a kind of.
Background technology
Bullet train will bring out a series of aerodynamic effects when the tunnel in the tunnel, wherein, and most importantly transient pressure and tunnel exit micro-pressure wave in the tunnel.The transition meeting of pressure produces pressure differential in ear-drum, directly influence the comfortable and healthy of personnel on the train, can solve by the sealing index that improves train; The tunnel exit micro-pressure wave can produce explosive sound in outlet, influences the acoustic environment of tunnel exit periphery, and near sharply vibration of lightweight structures thing (housing window) making, this phenomenon is called micro-pressure wave phenomenon.Micro-pressure wave phenomenon causes severe noise to pollute, and peripheral resident is produced the bad mental influence, and is bigger to the harmfulness of environment.For the micro-pressure wave effect being reduced within the scope of Design of Railway Tunnel regulation and stipulation, the designer takes the measure optimizing the portal form, the hole buffer structure is set usually both at home and abroad.But, special buffer structure is set not only occupies more spaces, the former landform landforms in hole are destroyed big, and constructional difficulties, degree of safety is low, cost is high.Therefore, optimize the attention that the portal form more and more is subjected to domestic and international designer.
But there is following problem in existing portal form: traditional railway tunnel portal pattern (headwall formula, aileron formula, pillar, step) can not be alleviated hole micro-pressure wave effect, and bigger to face of land destruction, is unfavorable for the requirement that the present environmental protection of advocating and water are protected.Cap brim bias-cutting type hole-door can be alleviated railway tunnel hole micro-pressure wave effect, but 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 ring width inclined cutout Tunnel Portal Structures such as a kind of according to above-mentioned deficiency, and this Tunnel Portal Structures is simple, steadiness good, be easy to construction, saves cost, applicability is strong, elegant in appearance, and it is effective to alleviate the micro-pressure wave effect.
The utility model is achieved by the following technical solution:
Ring width inclined cutout Tunnel Portal Structures such as a kind of, comprise tunnel portal section liner structure, it is characterized in that: smooth-going to being connected to portal in described liner structure outer end, described portal inwall is parallel to tunnel portal section liner structure inwall length direction, and extend to form, wall thickness equates between described portal inside and outside wall, in described portal entrance portal end platform is set, described portal end platform outer face is the scarf that progressively tilts inwardly from down to up, the inwall of described portal end platform is the extension of portal inwall, the outer wall of described portal end platform is the inclined-plane opposite with portal end platform outer face incline direction, and join with the portal outer wall, wall thickness is identical along circumferential direction between described portal end platform inside and outside wall, is the portal end platform of wide annular.By ring width inclined cutout portal end platform is set etc., can effectively solve the micro-pressure wave problem at place, railway hole, satisfy high-speed railway Tunnel Design standard to the requirement of hole micro-pressure wave peak value, need not additionally to arrange special buffer structure.And can take full advantage of the former face of land of tunnel portal stable side slope and vegetation, brush side, hole amount is few, thereby has simple in structure, little, the cost economic of taking up space, advantage that ambient influnence is little.
Preferably, described portal structure is whole steel concrete pour mass, and docks with the tunnel uniform section.Can strengthen the whole steadiness of portal, degree of safety height, not fragile.
Preferably, form at the vault place between the top of described portal end platform and the outer wall of portal and choose height, choose that the angle of slope is 100-175 ° between high and portal axis.Can have good anti-slope failure, rock-fall proof function, and simplicity of design, easy construction.
Preferred portal end platform inside and outside wall thickness is 0.3-2m.
Ring width inclined cutout Tunnel Portal Structures such as of the present utility model can take full advantage of the former face of land of tunnel portal stable side slope and vegetation, and brush side, hole amount is few, thereby has simple in structure, little, the cost economic of taking up space, advantage that ambient influnence is little.And because simple in structure, longitudinal length is little, and is low to tunnel portal landform and geologic requirements, so applicability is also strong, and cost is low.The portal end platform of scarf also has good anti-slope failure, the function of rock-fall proof simultaneously, and steadiness is good.In addition, the air force micro-pressure wave effect in tunnel can also be effectively alleviated, high speed Tunnel Design standard can be satisfied to the requirement of hole micro-pressure wave peak value.The utility model is simple in structure, and longitudinal length is little, and is low to tunnel portal landform and geologic requirements, has very strong practicality.
Description of drawings
Fig. 1 is perspective view of the present utility model;
Fig. 2 looks schematic diagram for master of the present utility model;
Fig. 3 is longitudinal section schematic diagram of the present utility model;
The landform bank protection, 2. liner structure, 3. portal, 4. portal end platform, 5. the tunnel, 6. choose height, 7. portal end platform outer wall, 8. portal end platform inwall.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing:
As Figure 1-3, ring width inclined cutout Tunnel Portal Structures such as the utility model are positioned on the landform bank protection 1, smooth-going to being connected to portal 3 in described liner structure 2 outer ends, described portal 3 inwalls are parallel to tunnel portal section liner structure inwall length direction, and extend to form, wall thickness equates between described portal inside and outside wall, in described portal 3 entrance portal end platform 4 is set, described portal end platform 4 outer faces are the scarf that progressively tilts inwardly from down to up, described portal end platform inwall 8 is the extension of portal inwall, described portal end platform outer wall 7 is the inclined-plane opposite with portal end platform 4 outer face incline directions, and join with the portal outer wall, wall thickness is identical along circumferential direction between described portal end platform 4 inside and outside walls, is the portal end platform of wide annular.Form at the vault place between the portal end platform outer wall 7 of the top of described portal end platform 4 and portal 3 choose high by 6, choose high 6 and the portal axis between the angle of slope be 100-175 °.Portal end platform 4 inside and outside wall thickness are 0.3-2m.Portal end platform 4 angles of inclination can suitably be selected according to peripheral landform, execution conditions and train running speed.Make and the utlity model has good anti-slope failure, rock-fall proof function.
Ring width scarf portal end platform such as of the present utility model can effectively be alleviated the aerodynamic effects of railway tunnel, can satisfy high-speed railway Tunnel Design standard to the requirement of hole micro-pressure wave peak value, need not additionally to arrange special buffer structure.And can take full advantage of the former face of land of tunnel portal stable side slope and vegetation, brush side, hole amount is few, thereby has simple in structure, little, the cost economic of taking up space, advantage that ambient influnence is little.To wait ring width inclined cutout portal simultaneously be whole steel concrete pour mass and dock with hole lining cutting segment structure uniform section, has degree of safety height, non-damageable advantage.Also have good anti-slope failure, rock-fall proof function, and simplicity of design, easy construction, steadiness is good, cost is lower.Simple in structure etc. ring width inclined cutout portal end platform, longitudinal length is little, and is low to tunnel portal landform and geologic requirements, has the strong advantage of applicability.
The above only is 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., all should be included within the protection domain of the present utility model.
Claims (4)
1. ring width inclined cutout Tunnel Portal Structures such as a kind, comprise tunnel portal section liner structure, it is characterized in that: smooth-going to being connected to portal in described liner structure outer end, described portal inwall is parallel to tunnel portal section liner structure inwall length direction, and extend to form, wall thickness equates between described portal inside and outside wall, in described portal entrance portal end platform is set, described portal end platform outer face is the scarf that progressively tilts inwardly from down to up, the inwall of described portal end platform is the extension of portal inwall, the outer wall of described portal end platform is the inclined-plane opposite with portal end platform outer face incline direction, and join with the portal outer wall, wall thickness is identical along circumferential direction between described portal end platform inside and outside wall, is the portal end platform of wide annular.
2. according to ring width inclined cutout Tunnel Portal Structures such as claim 1 is described, it is characterized in that: described portal structure is whole steel concrete pour mass, and docks with the tunnel uniform section.
3. according to ring width inclined cutout Tunnel Portal Structures such as claim 1 are described, it is characterized in that: form at the vault place between the top of described portal end platform and the outer wall of portal and choose height, choose that the angle of slope is 100-175 ° between high and portal axis.
4. according to ring width inclined cutout Tunnel Portal Structures such as claim 1 is described, it is characterized in that: portal end platform inside and outside wall thickness is 0.3-2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749040 CN203230427U (en) | 2012-12-31 | 2012-12-31 | Constant annular width beveling-type tunnel portal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749040 CN203230427U (en) | 2012-12-31 | 2012-12-31 | Constant annular width beveling-type tunnel portal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230427U true CN203230427U (en) | 2013-10-09 |
Family
ID=49286560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220749040 Expired - Lifetime CN203230427U (en) | 2012-12-31 | 2012-12-31 | Constant annular width beveling-type tunnel portal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230427U (en) |
-
2012
- 2012-12-31 CN CN 201220749040 patent/CN203230427U/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 |
Granted publication date: 20131009 |
|
| CX01 | Expiry of patent term |