CN202466344U - Railroad bed structure in seismic area - Google Patents
Railroad bed structure in seismic area Download PDFInfo
- Publication number
- CN202466344U CN202466344U CN2012201033367U CN201220103336U CN202466344U CN 202466344 U CN202466344 U CN 202466344U CN 2012201033367 U CN2012201033367 U CN 2012201033367U CN 201220103336 U CN201220103336 U CN 201220103336U CN 202466344 U CN202466344 U CN 202466344U
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- layer
- embankment
- geosynthetics
- subgrade
- bed
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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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a railroad bed structure in a seismic area. The railroad bed structure comprises an embankment consisting of a bed surface layer, a bed bottom layer and an embankment body below a bed; geosynthetics layers are sufficiently paved on the bed bottom layer and the embankment body below the bed; the both ends of the geosynthetics layers cover fillers of the bed bottom layer and the embankment body below the bed by upward inflection along side slopes at the both sides of the embankment. With the adoption of the railroad bed structure provided by the utility model, the roadbed stress state under the effects of a horizontal seismic force can be improved, so that the entire stability is improved, and the defects of cracks, sliding of the side slopes and the like further can be prevented.
Description
Technical field
The utility model relates to the railway bed building field, relates in particular to a kind of earthquake zone railway bed structure.
Background technology
Japan's the Shinkansen experience and China's Wenchuan earthquake calamity " Invest, Then Investigate " show: under the effect of earthquake, railway bed can produce diseases such as sinking, cracking, slope failure, depression and whole unstability, has had a strong impact on safety of railway transportation.The degree of roadbed earthquake disease is main relevant with earthquake intensity, roadbed height, filling property and foundation soil character etc.
In engineering design, to soft foundations such as the liquefaction of earthquake zone soil and weak soils, take usually to choose seismic stability preferably roadbed filling guarantee the stability of roadbed under the geological process.Yet, see that from investigation because roadbed filling belongs to the material of low binding strength, under the effect of horizontal seismic force, resistance to overturning is poor, easy of crack also produces slope failure and depression.
Therefore, be necessary to provide a kind of earthquake zone railway bed structure to overcome above-mentioned defective.
The utility model content
The purpose of the utility model provides a kind of earthquake zone railway bed structure, can improve the roadbed stress under the action of horizontal seismic, thereby, improve resistance to overturning, and then, prevent to produce diseases such as cracking and side slope slumping.
To achieve these goals; The utility model provides a kind of earthquake zone railway bed structure; Comprise the embankment that constitutes by the following embankment of surface layer of subgrade bed, bottom layer of subgrade and bedding; Completely be covered with the geosynthetics layer in said bottom layer of subgrade and the following embankment of said bedding, and the filler of said bottom layer of subgrade or the following embankment of said bedding is wrapped up along the inflection that makes progress of the side slope of said embankment both sides respectively in the two ends of said geosynthetics layer.
Preferably, said geosynthetics layer is GSZ or geotechnical grid.
Preferably, the vertical distance of the said geosynthetics layer of adjacent two layers is 0.5～1.0 meter.
Preferably, the inflection length at said geosynthetics layer two ends is more than or equal to 3 meters.
Preferably; Said surface layer of subgrade bed adopts graded broken stone to fill; Said bottom layer of subgrade adopts A, B group rubble class, gravel class, gravelly sand or coarse sand filler or conditioned soil filler to fill, and the following embankment of said bedding adopts A, B, C group rubble class, gravel class, gravelly sand or coarse sand filler or conditioned soil filler to fill.
Compared with prior art, owing to be equipped with multilayer geosynthetics layer in the railway bed structure of the utility model earthquake zone, and the two ends inflection parcel bottom layer of subgrade of every layer of geosynthetics layer or the filler of the following embankment of bedding; Form the anchoring type inclusion enclave, thereby, through the pulling force and the ductility of geosynthetics; Can improve the roadbed stress under the action of horizontal seismic, thereby, strengthened the globality of road structure; And then, prevent to produce diseases such as cracking and side slope slumping.
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 earthquake zone railway bed structure.
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.
As shown in Figure 1, the earthquake zone railway bed structure of the utility model comprises embankment 14 and the geosynthetics layer 13 that is made up of the following embankment 12 of surface layer of subgrade bed 10, bottom layer of subgrade 11 and bedding.Said geosynthetics layer 13 completely is layered in said bottom layer of subgrade 10 and following the embankment 12 of said bedding, promptly runs through being laid in said bottom layer of subgrade 10 and the following embankment 12 of said bedding along the direction perpendicular to the bearing of trend of high-speed railway.The two ends of said geosynthetics layer 13 respectively along the side slope 15 of said embankment 14 both sides upwards inflection wrap up the filler of said bottom layer of subgrade 10 or the following embankment 12 of said bedding.
Said surface layer of subgrade bed 10 adopts graded broken stone to fill; Said bottom layer of subgrade 11 adopts A, B group rubble class, gravel class, gravelly sand or coarse sand filler or conditioned soil filler to fill, and the following embankment 12 of said bedding adopts A, B, C group rubble class, gravel class, gravelly sand or coarse sand filler or conditioned soil filler to fill.
Further, said geosynthetics layer 13 is GSZ or geotechnical grid, and the vertical distance of the said geosynthetics layer 13 of adjacent two layers is that the inflection length L at 0.5～1.0 meter and said geosynthetics layer 13 two ends is more than or equal to 3 meters.
Can know by technique scheme, owing to be equipped with multilayer geosynthetics layer 13 in the railway bed structure of the utility model earthquake zone, and the two ends inflection parcel bottom layer of subgrade 11 of every layer of geosynthetics layer 13 or the filler of the following embankment 12 of bedding; Form the anchoring type inclusion enclave; Thereby, through the pulling force and the ductility of geosynthetics, can improve the roadbed stress under the action of horizontal seismic; Thereby; Strengthened the globality of road structure, and then, prevent to produce diseases such as cracking and side slope slumping.
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 (5)
1. earthquake zone railway bed structure; Comprise the embankment that constitutes by the following embankment of surface layer of subgrade bed, bottom layer of subgrade and bedding; It is characterized in that; Completely be covered with the geosynthetics layer in said bottom layer of subgrade and the following embankment of said bedding, and the filler of said bottom layer of subgrade or the following embankment of said bedding is wrapped up along the inflection that makes progress of the side slope of said embankment both sides respectively in the two ends of said geosynthetics layer.
2. earthquake zone as claimed in claim 1 railway bed structure is characterized in that said geosynthetics layer is GSZ or geotechnical grid.
3. earthquake zone as claimed in claim 1 railway bed structure is characterized in that the vertical distance of the said geosynthetics layer of adjacent two layers is 0.5～1.0 meter.
4. earthquake zone as claimed in claim 1 railway bed structure is characterized in that, the inflection length at said geosynthetics layer two ends is more than or equal to 3 meters.
5. earthquake zone as claimed in claim 1 railway bed structure; It is characterized in that; Said surface layer of subgrade bed adopts graded broken stone to fill; Said bottom layer of subgrade adopts A, B group rubble class, gravel class, gravelly sand or coarse sand filler or conditioned soil filler to fill, and the following embankment of said bedding adopts A, B, C group rubble class, gravel class, gravelly sand or coarse sand filler or conditioned soil filler to fill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201033367U CN202466344U (en) | 2012-03-19 | 2012-03-19 | Railroad bed structure in seismic area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201033367U CN202466344U (en) | 2012-03-19 | 2012-03-19 | Railroad bed structure in seismic area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202466344U true CN202466344U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201033367U Expired - Lifetime CN202466344U (en) | 2012-03-19 | 2012-03-19 | Railroad bed structure in seismic area |
Country Status (1)
| Country | Link |
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| CN (1) | CN202466344U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103821058A (en) * | 2014-03-04 | 2014-05-28 | 河海大学 | Reinforced road embankment structure device and construction method thereof |
| US20150345084A1 (en) * | 2012-11-15 | 2015-12-03 | K & K Maschinenentwicklungs Gmbh & Co. Kg | Rail-bound transportation system for a track building machine |
| CN106638545A (en) * | 2017-01-23 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Expansive soil embankment structure improved and reinforced through core cladding method and construction method |
| CN106676991A (en) * | 2017-01-23 | 2017-05-17 | 中铁第四勘察设计院集团有限公司 | Expansive soil embankment structure improved and reinforced by sandwich method and construction method |
| CN108457135A (en) * | 2018-03-14 | 2018-08-28 | 广东工业大学 | A kind of Vibrant buffer layer |
-
2012
- 2012-03-19 CN CN2012201033367U patent/CN202466344U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20150345084A1 (en) * | 2012-11-15 | 2015-12-03 | K & K Maschinenentwicklungs Gmbh & Co. Kg | Rail-bound transportation system for a track building machine |
| US9856609B2 (en) * | 2012-11-15 | 2018-01-02 | K & K Maschinenentwicklungs Ghbm & Co. Kg | Rail-bound transportation system for a track building machine |
| CN103821058A (en) * | 2014-03-04 | 2014-05-28 | 河海大学 | Reinforced road embankment structure device and construction method thereof |
| CN103821058B (en) * | 2014-03-04 | 2015-11-18 | 河海大学 | The constructional device of Study on Reinforced Embankments Using and construction method thereof |
| CN106638545A (en) * | 2017-01-23 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Expansive soil embankment structure improved and reinforced through core cladding method and construction method |
| CN106676991A (en) * | 2017-01-23 | 2017-05-17 | 中铁第四勘察设计院集团有限公司 | Expansive soil embankment structure improved and reinforced by sandwich method and construction method |
| CN106638545B (en) * | 2017-01-23 | 2019-06-18 | 中铁第四勘察设计院集团有限公司 | The Treatment of Expansive Soil Embankment structure and construction method that the improvement of cored method is reinforced |
| CN108457135A (en) * | 2018-03-14 | 2018-08-28 | 广东工业大学 | A kind of Vibrant buffer layer |
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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: 20121003 |
|
| CX01 | Expiry of patent term |