CN102678132B - Anti-rockfall reinforced concrete open-cut tunnel structure - Google Patents
Anti-rockfall reinforced concrete open-cut tunnel structure Download PDFInfo
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- CN102678132B CN102678132B CN201210182184.9A CN201210182184A CN102678132B CN 102678132 B CN102678132 B CN 102678132B CN 201210182184 A CN201210182184 A CN 201210182184A CN 102678132 B CN102678132 B CN 102678132B
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Abstract
The invention relates to an anti-rockfall reinforced concrete open-cut tunnel structure. In the mountainous area, mountain slopes are generally steep and narrow in sites, thus being incapable of meeting the condition on that an anti-rockfall structure is arranged on an extension tunnel portal and being limited by tunnel portal engineering condition; and therefore, the phenomenon of holed bridge abutments or adjacent bridge tunnels is common, and the common tunnel portal structure is not suitable for the mountainous area. An arched reinforced concrete lining structure of an outer cover is arranged on a bridge body structure, and the bottom end of the reinforced concrete lining structure is arranged on a pile foundation through a pile top longitudinal beam; and a plurality of ventilation lighting holes are formed on an arch part and a side wall position, which are arranged on two sides of the reinforced concrete lining structure, and a rubber protective layer is arranged outside the reinforced concrete lining structure. With the adoption of the anti-rockfall reinforced concrete open-cut tunnel structure, an external environment is relatively isolated from a driving environment so as to ensure that the environment in the tunnel portal and the outside are not influenced mutually; and in addition, the durability performance is good, the later operation maintenance workload is less, and the cost is low.
Description
Technical field
the invention belongs to traffic engineering technical field, be specifically related to a kind of rock-fall proof steel concrete open-cut tunnel structure.
Background technology
Build high-speed railway in mountain area, in area, general hillside is precipitous, and narrow space, does not possess the condition that spreading tunnel portal arranges rock-fall proof structure.West becomes Tunnel in Passenger Dedicated Railway Line mainly to concentrate on Qinling Mountain Areas and Dabashan Region, in works limit, mountain shape is precipitous, ditch valley in length and breadth, tunnel portal is mostly " V " type cheuch, earth's surface, hole natural grade 40 ° ~ 80 °, by the restriction of hole engineering specifications, abutment enters hole or the adjacent phenomenon of bridge tunnel is comparatively common, conventional portal structure can not be suitable for, in order to ensure train safe, quick, normal operation, reduce speed limit to greatest extent and stop wheel, needing the relative isolation of external environment with environment, thus environment and the external world are independent of each other.When landform, formation condition allow, rock-fall proof structure is by the open cut tunnel of tunnel portal spreading certain length, can reach and prevent falling rocks from pounding on circuit or train, but intensive tunnel group feature of growing up is presented in tunnel, between two tunnels in the general less situation of open-wire line spacing, spreading tunnel portal condition is not enough.
Summary of the invention
The object of this invention is to provide and a kind ofly at landform precipitous section, the rock-fall proof steel concrete open-cut tunnel structure of protection effect is played to environment.
The technical solution adopted in the present invention is:
Rock-fall proof steel concrete open-cut tunnel structure, is characterized in that:
Be provided with the outer reinforced concrete lining layer structure covering on arch above bridge body construction, the bottom of reinforced concrete lining layer structure is arranged in pile foundation by stake top longeron.
Arch and the abutment wall position of described reinforced concrete lining layer structure both sides are provided with multiple ventilation and lighting hole.
Described reinforced concrete lining layer structure is outside equipped with preventing rubber layer.
The present invention has the following advantages:
Excellent in durability of the present invention, later stage operation maintenance workload is little, cost is low, and can by the relative isolation of external environment with environment, thus hole environment and the external world are independent of each other, by carrying out the numerical simulation analysis of droping route to tunnel portal section, face upward more than 30m height above slope, assuming that a volume is 0.5m at tunnel portal
3, about 1 ton flumps stone and falls from crag district, and after open cut tunnel spreading certain length, in open cut tunnel, circuit and train substantially can safeties, on driving almost without affecting; On the basis not affecting structural safety and rock-fall proof effect, reach natural ventilation, natural lighting, improve the object of vehicle operating environment in hole.
Accompanying drawing explanation
Fig. 1 is cross section of the present invention.
Fig. 2 is open cut tunnel side view of the present invention.
In figure, 1-pile foundation, 2-stake top longeron, 3-bridge body construction, 4-reinforced concrete lining layer structure, 5-ventilation and lighting hole, 6-tunnel standard Internal periphery, 7-preventing rubber layer.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
A kind of rock-fall proof steel concrete open-cut tunnel structure of the present invention, is provided with the outer reinforced concrete lining layer structure 4 covering on arch above bridge body construction 3, is formed a kind of by the structural system of external environment with the relative isolation of environment.The bottom of reinforced concrete lining layer structure 4 is arranged in pile foundation 1 by stake top longeron 2, and the spacing of pile foundation 1 and landform, geology and bridge span arrangement adapt.Open cut tunnel is substrate without the open structure of inverted arch or base plate, road surface structure is placed in bridge construction, open cut tunnel basis can adopt pile foundation or Extended chemotherapy according to strata condition, and arch wall lining cutting adopts cast-in-place or precast block reinforced concrete structure according to site operation ambient conditions.The arch, both sides of reinforced concrete lining layer structure 4 and abutment wall are provided with ventilation and lighting hole 5, and these ventilation and lighting holes, on the basis not affecting structural safety and sand-proof effect, reach natural ventilation, natural lighting, improve the object of vehicle operating environment in hole.Reinforced concrete lining layer structure 4 is outside equipped with preventing rubber layer 7, and preventing rubber layer 7 can adopt the junked tire of array, protection open cut tunnel external structure.
Claims (2)
1. rock-fall proof steel concrete open-cut tunnel structure, is characterized in that:
Be provided with the outer reinforced concrete lining layer structure (4) covering on bridge body construction (3) top arch, reinforced concrete lining layer structure (4) both sides are vertical abutment wall, are the arch of arc above abutment wall;
Reinforced concrete lining layer structure (4) is monobloc cast structure, from abutment wall to arch uniform thickness;
The bottom of reinforced concrete lining layer structure (4) is pushed up longeron (2) by stake and is arranged in pile foundation (1);
The arch of reinforced concrete lining layer structure (4) both sides and abutment wall position are provided with multiple ventilation and lighting hole (5), ventilation and lighting hole (5) is the curved strip lightlng hole in top, top is provided with cover edge, cover edge is projection straight up, and cover edge apical margin inner vertical is in the arch of liner structure arc.
2. rock-fall proof steel concrete open-cut tunnel structure according to claim 1, is characterized in that:
Described reinforced concrete lining layer structure (4) is outside equipped with preventing rubber layer (7), adopts the junked tire of array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182184.9A CN102678132B (en) | 2012-06-05 | 2012-06-05 | Anti-rockfall reinforced concrete open-cut tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182184.9A CN102678132B (en) | 2012-06-05 | 2012-06-05 | Anti-rockfall reinforced concrete open-cut tunnel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678132A CN102678132A (en) | 2012-09-19 |
| CN102678132B true CN102678132B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210182184.9A Active CN102678132B (en) | 2012-06-05 | 2012-06-05 | Anti-rockfall reinforced concrete open-cut tunnel structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362523B (en) * | 2013-07-22 | 2015-04-22 | 重庆巨能建设(集团)有限公司 | Suspended formwork lining method for cover arch outside tunnel portal with weak surrounding rocks |
| CN104153789A (en) * | 2014-08-21 | 2014-11-19 | 铁道第三勘察设计院集团有限公司 | High-speed railway separation type tunnel-bridge concatenation tunnel portal |
| CN104963695B (en) * | 2015-05-28 | 2017-11-28 | 中国铁道科学研究院铁道建筑研究所 | Protect open cut tunnel and tunnel structure |
| CN110159294A (en) * | 2019-05-08 | 2019-08-23 | 中铁二十二局集团第五工程有限公司 | A kind of high steep landform tunnel immediately adjacent to bridge section spreading open cut tunnel construction method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3443040C2 (en) * | 1984-11-26 | 1986-12-04 | Gerhard Dr.-Ing. Puch Salzburg Sauer | Process for the production of underground structures using the cover construction method |
| JP4549191B2 (en) * | 2005-01-05 | 2010-09-22 | ジオスター株式会社 | Repair method for existing tunnel |
| CN101806220A (en) * | 2010-03-25 | 2010-08-18 | 中铁二院工程集团有限责任公司 | Structure extending open tunnel for existing rapid transit railway tunnel |
| CN201679094U (en) * | 2010-05-25 | 2010-12-22 | 中铁二院工程集团有限责任公司 | Abutment-tunnel conjunctive structure |
| CN101922301A (en) * | 2010-08-30 | 2010-12-22 | 中铁第四勘察设计院集团有限公司 | A kind of tunnel safeguard structure that passes through the dark solution cavity of relative superiority or inferiority |
| CN202227287U (en) * | 2011-06-22 | 2012-05-23 | 中铁二院工程集团有限责任公司 | High speed railway bridge protection shed tunnel structure |
| CN202117685U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Rockfall protection structure for extended open cut tunnel of railway tunnel |
| CN202690074U (en) * | 2012-06-05 | 2013-01-23 | 中铁第一勘察设计院集团有限公司 | Falling-rock preventing reinforced concrete open cut tunnel structure |
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2012
- 2012-06-05 CN CN201210182184.9A patent/CN102678132B/en active Active
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| CN102678132A (en) | 2012-09-19 |
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