CN101974877A - Rapid transit railway soft rock-improved soil roadbed structure - Google Patents
Rapid transit railway soft rock-improved soil roadbed structure Download PDFInfo
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- CN101974877A CN101974877A CN2010105128249A CN201010512824A CN101974877A CN 101974877 A CN101974877 A CN 101974877A CN 2010105128249 A CN2010105128249 A CN 2010105128249A CN 201010512824 A CN201010512824 A CN 201010512824A CN 101974877 A CN101974877 A CN 101974877A
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- soft rock
- speed railway
- road structure
- conditioned soil
- soil road
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a rapid transit railway soft rock-improved soil roadbed structure comprising a road embankment formed by a foundation bed surface layer, a foundation bed surface layer and a roadbed body. The side slopes of both sides of the road embankment are provided with side slope protection layers; a water-resisting layer is arranged between the roadbed body and a foundation bed bottom layer; the bottom surface of the roadbed body is also provided with a water-resisting layer; the water-resisting layer comprises a compound geomembrane and medium coarse sand layers which are arranged above and below the compound geomembrane; each medium coarse sand layer is 4-6cm thick; and the fine grain content in the medium coarse sand layers is less than 5 percent. The rapid transit railway soft rock-improved soil roadbed structure has comprehensive waterproof and drainage measures, good effect and stable overall settlement and can meet the requirements for the post-construction settlement and the long-time stability of the rapid transit railway roadbed.
Description
Technical field
The present invention relates to the high-speed railway subgrade building field, relate in particular to a kind of high-speed railway soft rock conditioned soil road structure.
Background technology
Adopting the soft rock conditioned soil to carry out roadbed and build, is effective measures of saving cost, reducing investment.Do not have clear and definite regulation for soft rock conditioned soil subgrade structure pattern in existing Railway Design standard " high-speed railway design specifications " and " the railway bed design specifications ".Therefore, demand urgently providing a kind of high-speed railway soft rock conditioned soil road structure to overcome above-mentioned defective.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high-speed railway soft rock conditioned soil road structure, and this road structure is anti-, drainage measure is comprehensive, respond well, and bulk settling is stable, can satisfy the settlement after construction and the long-time stability requirement of high-speed railway subgrade.
In order to solve the problems of the technologies described above, the invention provides a kind of high-speed railway soft rock conditioned soil road structure, it comprises by surface layer of subgrade bed, the embankment that bottom layer of subgrade and roadbed body constitute, the side slope of described embankment both sides is provided with the side slope protection layer, be provided with water barrier between described roadbed body and the described bottom layer of subgrade, the bottom surface of described roadbed body also is provided with water barrier, described water barrier comprises composite geo-membrane and is located at above the described composite geo-membrane and following medium-sand seam, the thickness of every layer of described medium-sand seam is 4～6cm, and the fine particle content in the described medium-sand seam is less than 5%.
Compared with prior art, the end face and the bottom surface of the roadbed body of high-speed railway soft rock conditioned soil road structure of the present invention are equipped with water barrier, described water barrier comprises composite geo-membrane and is located at above the described composite geo-membrane and following medium-sand seam, the thickness of every layer of described medium-sand seam is 4～6cm, and the fine particle content in the described medium-sand seam is less than 5%, the water barrier of aforementioned structure can be isolated the roadbed body, avoid surface water and underground water to enter described roadbed body, and then guarantee that the roadbed bulk settling is stable.
Preferably, the intermembranous lap width of described composite geo-membrane is more than or equal to 0.3m.
Preferably, described composite geo-membrane bonds by marine glue.
Preferably, be equipped with plurality of layers of double to geo-grid in the described side slope, to strengthen the globality of roadbed.The vertical distance of the described two-way geo-grid of adjacent two layers is less than or equal to 0.6m.
Further, the fabric width of described two-way geo-grid is more than or equal to 3.0m.
Preferably, the toe both sides of described roadbed body are provided with the pin wall, to avoid toe by rain drop erosion.Described pin wall is preferably the concrete pin wall of the above intensity of C20 or the mortar flag stone pin wall of the above intensity of M7.5.
Preferably, the described side slope protection layer concrete that is the above intensity of C25 the grass planting safeguard structure in the skeleton that intercepts water.Further, described concrete intercepts water the main framing clear distance of grass planting safeguard structure in the skeleton smaller or equal to 3m, between arch clear distance smaller or equal to 3m, the thick 0.5～0.7m of skeleton.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the structural representation of an embodiment of high-speed railway soft rock conditioned soil road structure of the present invention.
The specific embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the invention provides a kind of high-speed railway soft rock conditioned soil road structure, this road structure is anti-, drainage measure is comprehensive, respond well, and bulk settling is stable, can satisfy the settlement after construction and the long-time stability requirement of high-speed railway subgrade.
Elaborate the technical scheme of the embodiment of the invention below in conjunction with accompanying drawing.As shown in Figure 1, the high-speed railway soft rock conditioned soil road structure of present embodiment comprises the embankment that is made of surface layer of subgrade bed 1, bottom layer of subgrade 2 and roadbed body 3, the side slope of described embankment both sides is provided with side slope protection layer 4, be provided with water barrier 5 between described roadbed body 3 and the described bottom layer of subgrade 2, the bottom surface of described roadbed body 3 also is provided with water barrier 5, described water barrier 5 comprises composite geo-membrane and is located at above the described composite geo-membrane and following medium-sand seam, the thickness of every layer of described medium-sand seam is 4～6cm, and the fine particle content in the described medium-sand seam is less than 5%.Described geomembrane should meet " Technical code for application of geosynthetics " (GB50290-98) and " railway bed geosynthetics use design specifications " related request (TB10118-2006J532-2006).The intermembranous lap width of described composite geo-membrane is more than or equal to 0.3m.Described composite geo-membrane bonds by marine glue.Preferably, described side slope protection layer 4 is the concrete of the above intensity of the C25 grass planting safeguard structure in the skeleton that intercepts water.Described surface layer of subgrade bed 1 adopts graded broken stone to fill, and bottom layer of subgrade 2 adopts A, B group filler to fill.Further, described concrete intercepts water the main framing clear distance of grass planting safeguard structure in the skeleton should be smaller or equal to 3m, and clear distance should be smaller or equal to 3m between arch, and skeleton is thick to be 0.5～0.7m, is preferably 0.6m.This edge slope structure is stable and elegant in appearance.
In the present embodiment, be equipped with plurality of layers of double in the described side slope, to strengthen the globality of roadbed to geo-grid 6.The vertical distance of the described two-way geo-grid 6 of adjacent two layers is less than or equal to 0.6m.The fabric width of described two-way geo-grid 6 is more than or equal to 3.0m.
Further, the toe both sides of described roadbed body 3 are provided with concrete pin wall 7, to avoid toe by rain drop erosion.Described pin wall 7 is preferably the concrete pin wall of the above intensity of C20 or the mortar flag stone pin wall of the above intensity of M7.5.
High-speed railway soft rock conditioned soil road structure of the present invention is applicable in the roadbed design and construction of soft rock waste conditioned soil such as argillaceous slate, argillaceous siltstoue, pebbly sandstone, adopt the roadbed section settlement stability of high-speed railway soft rock conditioned soil road structure of the present invention, can satisfy the settlement after construction control requirement of 15mm.
Claims (10)
1. high-speed railway soft rock conditioned soil road structure, comprise the embankment that constitutes by surface layer of subgrade bed, bottom layer of subgrade and roadbed body, the side slope of described embankment both sides is provided with the side slope protection layer, it is characterized in that: be provided with water barrier between described roadbed body and the described bottom layer of subgrade, the bottom surface of described roadbed body also is provided with water barrier, described water barrier comprises composite geo-membrane and is located at above the described composite geo-membrane and following medium-sand seam, the thickness of every layer of described medium-sand seam is 4～6cm, and the fine particle content in the described medium-sand seam is less than 5%.
2. high-speed railway soft rock conditioned soil road structure according to claim 1, it is characterized in that: the intermembranous lap width of described composite geo-membrane is more than or equal to 0.3m.
3. high-speed railway soft rock conditioned soil road structure according to claim 2, it is characterized in that: described composite geo-membrane bonds by marine glue.
4. according to each described high-speed railway soft rock conditioned soil road structure of claim 1-3, it is characterized in that: be equipped with plurality of layers of double to geo-grid in the described side slope.
5. high-speed railway soft rock conditioned soil road structure according to claim 4, it is characterized in that: the vertical distance of the described two-way geo-grid of adjacent two layers is less than or equal to 0.6m.
6. high-speed railway soft rock conditioned soil road structure according to claim 4, it is characterized in that: the fabric width of described two-way geo-grid is more than or equal to 3.0m.
7. according to each described high-speed railway soft rock conditioned soil road structure of claim 1-3, it is characterized in that: the toe both sides of described roadbed body are provided with the pin wall.
8. high-speed railway soft rock conditioned soil road structure according to claim 7 is characterized in that: the mortar flag stone pin wall of concrete pin wall that described pin wall is the above intensity of C20 or the above intensity of M7.5.
9. according to each described high-speed railway soft rock conditioned soil road structure of claim 1-3, it is characterized in that: the concrete that described side slope protection layer is the above intensity of the C25 grass planting safeguard structure in the skeleton that intercepts water.
10. high-speed railway soft rock conditioned soil road structure according to claim 8 is characterized in that: described concrete intercepts water the main framing clear distance of grass planting safeguard structure in the skeleton smaller or equal to 3m, between arch clear distance smaller or equal to 3m, the thick 0.5～0.7m of skeleton.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105128249A CN101974877A (en) | 2010-10-18 | 2010-10-18 | Rapid transit railway soft rock-improved soil roadbed structure |
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| CN2010105128249A CN101974877A (en) | 2010-10-18 | 2010-10-18 | Rapid transit railway soft rock-improved soil roadbed structure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330398A (en) * | 2011-07-23 | 2012-01-25 | 中铁二院工程集团有限责任公司 | High-speed railway roadbed structure of unsaturated soil foundation in plain region |
| CN102425091A (en) * | 2011-09-09 | 2012-04-25 | 中铁二院工程集团有限责任公司 | Mountain area groove cutting subgrade drainage structure |
| CN102535261A (en) * | 2012-03-19 | 2012-07-04 | 中铁第四勘察设计院集团有限公司 | Railway subgrade structure of seismic area |
| CN102561133A (en) * | 2012-03-27 | 2012-07-11 | 中铁第四勘察设计院集团有限公司 | Foundation bed structure of railway soil and soft rock cutting |
| CN103061225A (en) * | 2011-10-21 | 2013-04-24 | 中铁二十一局集团有限公司 | Rock salt railroad bed structure of section parallel to existing line and construction method of structure |
| CN103290752A (en) * | 2013-05-28 | 2013-09-11 | 长沙理工大学 | Embankment water seepage treatment system for freeway reconstruction and extension project |
| CN103485322A (en) * | 2013-09-10 | 2014-01-01 | 河海大学 | Capillary barrier roadbed structure capable of effectively preventing and treating roadbed humidification diseases and construction method |
| CN104532712A (en) * | 2014-12-25 | 2015-04-22 | 中交第二公路勘察设计研究院有限公司 | Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road |
| CN105421161A (en) * | 2015-11-05 | 2016-03-23 | 中铁二十一局集团有限公司 | Embankment structure capable of preventing loess embankment from wetting deformation |
| CN108360322A (en) * | 2018-02-05 | 2018-08-03 | 北京交通大学 | A kind of Gypsisol embankment fill material and construction method |
| CN109281234A (en) * | 2018-11-29 | 2019-01-29 | 西南交通大学 | A kind of scoria railway bed and its construction method |
| CN110894700A (en) * | 2019-11-03 | 2020-03-20 | 中铁二院工程集团有限责任公司 | Soil foundation road shoulder pile slab wall reinforcing structure and construction method |
| CN110896696A (en) * | 2019-11-19 | 2020-03-24 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Greening method by spraying and seeding fiber granules |
| CN113215889A (en) * | 2021-05-11 | 2021-08-06 | 中国科学院武汉岩土力学研究所 | Soft rock roadbed construction method for rainy and humid areas |
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| CN101153475A (en) * | 2007-09-30 | 2008-04-02 | 中铁二院工程集团有限责任公司 | Redbeds mudstone filled high-speed railway subgrade and construction method thereof |
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| US4174912A (en) * | 1978-07-31 | 1979-11-20 | Electroosmosis Inc. | System for heave reduction in highways due to frost or moisture in expansive clay or shale materials |
| JPH10102501A (en) * | 1996-09-27 | 1998-04-21 | Youta:Kk | Construction method of face of slope |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330398A (en) * | 2011-07-23 | 2012-01-25 | 中铁二院工程集团有限责任公司 | High-speed railway roadbed structure of unsaturated soil foundation in plain region |
| CN102425091A (en) * | 2011-09-09 | 2012-04-25 | 中铁二院工程集团有限责任公司 | Mountain area groove cutting subgrade drainage structure |
| CN103061225A (en) * | 2011-10-21 | 2013-04-24 | 中铁二十一局集团有限公司 | Rock salt railroad bed structure of section parallel to existing line and construction method of structure |
| CN102535261A (en) * | 2012-03-19 | 2012-07-04 | 中铁第四勘察设计院集团有限公司 | Railway subgrade structure of seismic area |
| CN102561133A (en) * | 2012-03-27 | 2012-07-11 | 中铁第四勘察设计院集团有限公司 | Foundation bed structure of railway soil and soft rock cutting |
| CN103290752B (en) * | 2013-05-28 | 2015-07-29 | 长沙理工大学 | A kind of Expressway Extension Project embankment infiltration punishment system |
| CN103290752A (en) * | 2013-05-28 | 2013-09-11 | 长沙理工大学 | Embankment water seepage treatment system for freeway reconstruction and extension project |
| CN103485322A (en) * | 2013-09-10 | 2014-01-01 | 河海大学 | Capillary barrier roadbed structure capable of effectively preventing and treating roadbed humidification diseases and construction method |
| CN103485322B (en) * | 2013-09-10 | 2016-08-03 | 河海大学 | The capillary retardance road structure of a kind of effective preventing and treating roadbed humidifying disease and construction method |
| CN104532712A (en) * | 2014-12-25 | 2015-04-22 | 中交第二公路勘察设计研究院有限公司 | Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road |
| CN105421161A (en) * | 2015-11-05 | 2016-03-23 | 中铁二十一局集团有限公司 | Embankment structure capable of preventing loess embankment from wetting deformation |
| CN108360322A (en) * | 2018-02-05 | 2018-08-03 | 北京交通大学 | A kind of Gypsisol embankment fill material and construction method |
| CN109281234A (en) * | 2018-11-29 | 2019-01-29 | 西南交通大学 | A kind of scoria railway bed and its construction method |
| CN110894700A (en) * | 2019-11-03 | 2020-03-20 | 中铁二院工程集团有限责任公司 | Soil foundation road shoulder pile slab wall reinforcing structure and construction method |
| CN110896696A (en) * | 2019-11-19 | 2020-03-24 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Greening method by spraying and seeding fiber granules |
| CN113215889A (en) * | 2021-05-11 | 2021-08-06 | 中国科学院武汉岩土力学研究所 | Soft rock roadbed construction method for rainy and humid areas |
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Application publication date: 20110216 |