CN202369864U - Salinized soil railroad bed structure - Google Patents
Salinized soil railroad bed structure Download PDFInfo
- Publication number
- CN202369864U CN202369864U CN2011205413233U CN201120541323U CN202369864U CN 202369864 U CN202369864 U CN 202369864U CN 2011205413233 U CN2011205413233 U CN 2011205413233U CN 201120541323 U CN201120541323 U CN 201120541323U CN 202369864 U CN202369864 U CN 202369864U
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- salinized soil
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a salinized soil railroad bed structure which comprises an embankment formed by a bed surface layer and a bed bottom layer, wherein side slope protecting layers are arranged on side slopes on two sides of the embankment; protecting toe walls are arranged at slope toes on the two sides of the embankment; an isolating layer is arranged at the bottom surface of the bed bottom layer; a closing layer is arranged between the top of the protecting toe walls and the side slopes of the embankment; and a back pressure layer is arranged between the isolating layer and the closing layer. The salinized soil railroad bed structure provided by the utility model is capable of preventing surface water from permeating into the railroad bed structure while preventing underground water and salinity from intruding into the railroad bed structure.
Description
Technical field
The utility model relates to the railway bed building field, relates in particular to a kind of salinized soil railway bed structure.
Background technology
Roadbed is the banded structure thing of building according to route allocation and certain technical requirements as the rail system basis.It also will bear the train load that is come by the rail system transmission, thereby it is the important component part of whole railway except bearing the ground deadweight own and the gravity of rail system.
Generally, roadbed comprises that surface layer of subgrade bed and bottom layer of subgrade, surface layer of subgrade bed adopt graded broken stone or graded sand gravel to fill more, and bottom layer of subgrade adopts A group filler or B group filler to fill more.In order to make roadbed have excellent waterproofness, the side slope in the road bed both sides also is provided with the side slope protection layer.In addition, the toe both sides of embankment are provided with anti-spats wall.Yet; Owing to do not have overcoat below the bottom layer of subgrade of above-mentioned road structure, and mostly the soil property of strand groundwater level region is salinized soil, underground water and salt branch invade in the road structure; Thereby; Can cause above-mentioned roadbed banket salination again with cause a series of diseases such as frost boiling and sedimentation, thereby, increased maintenance cost and influenced the safety of railway operation.
Therefore, be necessary to provide a kind of salinized soil railway bed structure to overcome above-mentioned defective.
The utility model content
The purpose of the utility model provides a kind of salinized soil railway bed structure, can prevent that not only surface water from infiltrating road structure, and can stop underground water and salinity to invade road structure.
To achieve these goals; The utility model provides a kind of salinized soil railway bed structure, comprises the embankment that is made up of surface layer of subgrade bed and bottom layer of subgrade, and the side slope of embankment both sides is provided with the side slope protection layer; The toe of embankment both sides is provided with anti-spats wall; The bottom surface of bottom layer of subgrade is provided with separation layer, and the top of anti-spats wall is provided with confining bed between the side slope of embankment, be provided with the back-pressure layer between separation layer and the confining bed.
Preferably, be provided with between bottom layer of subgrade and the separation layer to excavate and change packing course, the back-pressure layer changes between packing course and the confining bed excavating.
Preferably, the inboard of anti-spats wall also is provided with overcoat, and overcoat comprises the layers of asphalt layer and is sandwiched in the burlap bag layer between the layers of asphalt layer.
Preferably, separation layer comprises the composite earthwork rete and is layed in above the composite earthwork rete and following medium-sand seam.
Preferably, the thickness of composite earthwork rete is more than or equal to 0.5 millimeter, and transmission coefficient is smaller or equal to the 10-11 cel, and the CBR bursting strength is more than or equal to 2.5 thousand Ns, and the intermembranous lap width of composite geo-membrane is more than or equal to 10 centimetres.
Preferably, 10 centimetres of the thickness of medium-sand seam, and the mud content of medium-sand seam is less than 5%.
Preferably, confining bed is the bituminous concrete confining bed.
Preferably, the back-pressure layer changes packing course and is C group particulate soil layer or fine grained soils improvement soil layer with excavating.
Preferably, the side slope protection layer is mortar flag stone skeleton interplantation grass structure or the concrete skeleton interplantation grass structure that intercepts water that intercepts water.
Preferably, anti-spats wall is a concrete pin wall.
Compared with prior art, the bottom surface of the bottom layer of subgrade of the salinized soil railway bed structure of the utility model is provided with separation layer, is provided with confining bed between side slope and the anti-spats wall; Being provided with the back-pressure layer between separation layer and the confining bed, thereby, can road structure be isolated for above-mentioned three layers; Make whole road structure be in a kind of state of relatively independent sealing; Thereby, can prevent that not only surface water from infiltrating in the road structure, and can prevent in underground water and the salinity intrusion road structure; And then, guarantee the safety of railway operation and reduce maintenance cost.
Through following description and combine accompanying drawing, it is more clear that the utility model will become, and these accompanying drawings are used to explain the embodiment of the utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model salinized soil railway bed structure.
Fig. 2 is the partial enlarged drawing of A part among Fig. 1.
The specific embodiment
With reference now to accompanying drawing, describe the embodiment of the utility model, the similar elements label is represented similar elements in the accompanying drawing.
Shown in Fig. 1-2, present embodiment salinized soil railway bed structure comprises the embankment that is made up of surface layer of subgrade bed 10 and bottom layer of subgrade 11, and the form of structure of embankment, filler type and compacting criteria are undertaken by the requirement of respective level railway.
The side slope of embankment both sides is provided with side slope protection layer 12, and the toe of embankment both sides also is provided with anti-spats wall 13.Particularly, side slope protection layer 12 is the concrete skeleton interplantation grass structure that intercepts water, thick 0.7 meter of bank protection main framing, and thick 0.5 meter of arch skeleton, the both sides of bank protection main framing, bottom and top are equipped with 0.5 meter wide fringing.Anti-spats wall 13 is a concrete pin wall, adopts the C20 concrete masonry units, and the inboard of anti-spats wall 13 is provided with overcoat 14, and overcoat 14 comprises the layers of asphalt layer and is sandwiched in the burlap bag layer 142 between the layers of asphalt layer 141.
The bottom surface of bottom layer of subgrade 11 is provided with to excavate changes packing course 16, excavates and changes packing course 16 by separation layer 15 parcels.The top of anti-spats wall 13 is provided with confining bed 17 between the side slope of embankment, excavates to change between packing course 16 and the confining bed 17 to be provided with back-pressure layer 18.
Particularly, separation layer 15 comprises composite earthwork rete 151 and is layed in above the composite earthwork rete 151 and following medium-sand seam 152.The thickness of composite earthwork rete 151 is more than or equal to 0.5 millimeter, and transmission coefficient is smaller or equal to the 10-11 cel, and the CBR bursting strength is more than or equal to 2.5 thousand Ns, and the intermembranous lap width of composite earthwork rete 151 is more than or equal to 10 centimetres.10 centimetres of the thickness of medium-sand seam 152, and the mud content of medium-sand seam 152 is less than 5%.Confining bed 17 is 5 centimetres for bituminous concrete confining bed and thickness, and back-pressure layer 18 changes packing course 16 and is C group particulate soil layer or fine grained soils improvement soil layer with excavating.
More than combine most preferred embodiment that the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to the essence of the utility model.
Claims (10)
1. salinized soil railway bed structure; Comprise the embankment that is made up of surface layer of subgrade bed and bottom layer of subgrade, the side slope of embankment both sides is provided with the side slope protection layer, and the toe of embankment both sides is provided with anti-spats wall; It is characterized in that; The bottom surface of bottom layer of subgrade is provided with separation layer, and the top of anti-spats wall is provided with confining bed between the side slope of embankment, be provided with the back-pressure layer between separation layer and the confining bed.
2. salinized soil railway bed structure as claimed in claim 1 is characterized in that, is provided with between bottom layer of subgrade and the separation layer to excavate and changes packing course, and the back-pressure layer changes between packing course and the confining bed excavating.
3. salinized soil railway bed structure as claimed in claim 1 is characterized in that, the inboard of anti-spats wall also is provided with overcoat, and overcoat comprises the layers of asphalt layer and is sandwiched in the burlap bag layer between the layers of asphalt layer.
4. salinized soil railway bed structure as claimed in claim 1 is characterized in that, separation layer comprises the composite earthwork rete and is layed in above the composite earthwork rete and following medium-sand seam.
5. salinized soil railway bed structure as claimed in claim 4 is characterized in that the thickness of composite earthwork rete is more than or equal to 0.5 millimeter, and transmission coefficient is smaller or equal to 10
-11Cel, CBR bursting strength are more than or equal to 2.5 thousand Ns, and the intermembranous lap width of composite earthwork rete is more than or equal to 10 centimetres.
6. salinized soil railway bed structure as claimed in claim 4 is characterized in that, 10 centimetres of the thickness of medium-sand seam, and the mud content of medium-sand seam is less than 5%.
7. salinized soil railway bed structure as claimed in claim 1 is characterized in that confining bed is the bituminous concrete confining bed.
8. salinized soil railway bed structure as claimed in claim 2 is characterized in that, the back-pressure layer changes packing course and is C group particulate soil layer or fine grained soils improvement soil layer with excavating.
9. salinized soil railway bed structure as claimed in claim 1 is characterized in that, the side slope protection layer is mortar flag stone skeleton interplantation grass structure or the concrete skeleton interplantation grass structure that intercepts water that intercepts water.
10. salinized soil railway bed structure as claimed in claim 1 is characterized in that, anti-spats wall is a concrete pin wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205413233U CN202369864U (en) | 2011-12-21 | 2011-12-21 | Salinized soil railroad bed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205413233U CN202369864U (en) | 2011-12-21 | 2011-12-21 | Salinized soil railroad bed structure |
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| Publication Number | Publication Date |
|---|---|
| CN202369864U true CN202369864U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205413233U Expired - Lifetime CN202369864U (en) | 2011-12-21 | 2011-12-21 | Salinized soil railroad bed structure |
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| CN (1) | CN202369864U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774515A (en) * | 2014-02-20 | 2014-05-07 | 中铁第四勘察设计院集团有限公司 | High speed railway embankment structure in salty soil regions |
| CN104250946A (en) * | 2014-10-11 | 2014-12-31 | 中铁第四勘察设计院集团有限公司 | High-speed railway subgrade structure for saline soil areas |
| RU2551174C1 (en) * | 2014-05-27 | 2015-05-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный архитектурно-строительный университет" | Motor road on permafrost soils |
| CN104805745A (en) * | 2015-03-03 | 2015-07-29 | 宋金博 | Saline land roadbed laying method with environment protection effect |
| 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 |
| CN105525548A (en) * | 2015-12-15 | 2016-04-27 | 上海浦江桥隧高速公路管理有限公司 | Pavement structure aiming at locally high underground water level soft roadbed and full-depth digging maintenance method |
| CN106555368A (en) * | 2017-01-22 | 2017-04-05 | 中铁二院工程集团有限责任公司 | Saline soil area high-speed railway embankment reinforcing construction |
| CN106758628A (en) * | 2017-01-23 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Treatment of Expansive Soil Embankment structure and construction method that the improvement of compound core-spun method is reinforced |
-
2011
- 2011-12-21 CN CN2011205413233U patent/CN202369864U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774515A (en) * | 2014-02-20 | 2014-05-07 | 中铁第四勘察设计院集团有限公司 | High speed railway embankment structure in salty soil regions |
| RU2551174C1 (en) * | 2014-05-27 | 2015-05-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный архитектурно-строительный университет" | Motor road on permafrost soils |
| CN104250946A (en) * | 2014-10-11 | 2014-12-31 | 中铁第四勘察设计院集团有限公司 | High-speed railway subgrade structure for saline soil areas |
| CN104805745A (en) * | 2015-03-03 | 2015-07-29 | 宋金博 | Saline land roadbed laying method with environment protection effect |
| CN104805745B (en) * | 2015-03-03 | 2017-02-01 | 宋金博 | Saline land roadbed laying method with environment protection effect |
| 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 |
| CN105525548A (en) * | 2015-12-15 | 2016-04-27 | 上海浦江桥隧高速公路管理有限公司 | Pavement structure aiming at locally high underground water level soft roadbed and full-depth digging maintenance method |
| CN106555368A (en) * | 2017-01-22 | 2017-04-05 | 中铁二院工程集团有限责任公司 | Saline soil area high-speed railway embankment reinforcing construction |
| CN106555368B (en) * | 2017-01-22 | 2018-08-14 | 中铁二院工程集团有限责任公司 | Saline soil area high-speed railway embankment reinforcing construction |
| CN106758628A (en) * | 2017-01-23 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Treatment of Expansive Soil Embankment structure and construction method that the improvement of compound core-spun method is reinforced |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20120808 |