CN203782495U - High-speed railway road subgrade bed surface and transition section structure - Google Patents
High-speed railway road subgrade bed surface and transition section structure Download PDFInfo
- Publication number
- CN203782495U CN203782495U CN201420137500.5U CN201420137500U CN203782495U CN 203782495 U CN203782495 U CN 203782495U CN 201420137500 U CN201420137500 U CN 201420137500U CN 203782495 U CN203782495 U CN 203782495U
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- subgrade bed
- surface layer
- changeover portion
- subgrade
- layer
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Abstract
A high-speed railway road subgrade bed surface and transition section structure can effectively solve the problem that a high-speed railway road subgrade bed surface and a transition section lack a qualified graded broken stone material, can save engineering investment, and comprises a transition section (10) arranged at a connecting part (1) of a bridge circuit or culvert structure (1), a transition section subgrade bed surface layer (20) arranged at the top subgrade bed surface layer of the transition section (10), a non-transition section subgrade bed surface layer (30) arranged at the top subgrade bed surface layer of a non-transition section, a subgrade bed bottom layer (40) filled at the top of a rail road embankment body (50), and the rail road embankment body (50) filled on foundation soil.
Description
Technical field
The utility model relates to civil engineering, particularly lacks Subgrade Bed of High-speed Railway top layer and the changeover portion structure of graded broken stone material region.
Background technology
High-speed railway at present development is very rapid, according to the requirement of Design of High-speed Railway related specifications, subgrade bed top layer and changeover portion material require adopt graded broken stone filling technology, conventionally graded broken stone need adopt cut into a mountain piece stone or the sand gravel making that meet some strength, but in the time there is no passing material source, if adopt passing material outward transport to solve, may cause construction investment huge, if while there is sandy gravel in locality, employing sandy gravel is made, engineering practice shows, the compacting criteria of its roadbed is difficult to reach related specifications requirement.Therefore, a kind of new subgrade bed top layer of active demand and changeover portion structure solve this problem, and it need have economy, the feature such as simple of constructing, and meet the requirement of environmental protection.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Subgrade Bed of High-speed Railway top layer and changeover portion structure, lacks qualified graded broken stone problem of materials effectively to solve Subgrade Bed of High-speed Railway top layer and changeover portion, saves construction investment.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
Subgrade Bed of High-speed Railway of the present utility model top layer and changeover portion structure, is characterized in that it comprises: changeover portion, is arranged on bridge road or contains line structure thing junction; Changeover portion surface layer of subgrade bed, is arranged on surface layer of subgrade bed position, changeover portion top; Non-changeover portion surface layer of subgrade bed, is arranged on surface layer of subgrade bed position, non-changeover portion top; Bottom layer of subgrade fills at embankment noumenon top; Embankment noumenon fills on foundation soil.
The beneficial effects of the utility model are, utilize sandy gravel to make graded broken stone material, make a certain proportion of cement of admixture in graded broken stone material at sandy gravel, can improve the mixed material intensity compacting criteria relevant with easily meeting high-speed railway subgrade that sandy gravel is made, thereby can effectively solve Subgrade Bed of High-speed Railway top layer and changeover portion and lack qualified graded broken stone problem of materials, and save construction investment, this structure construction is simple, good economy performance, has wide popularizing application prospect.
Brief description of the drawings
This manual comprises following two width accompanying drawings:
Fig. 1 is the schematic diagram of the utility model Subgrade Bed of High-speed Railway top layer and changeover portion structure.
Fig. 2 is the non-changeover portion surface layer of subgrade bed structural representation of the utility model Subgrade Bed of High-speed Railway top layer and changeover portion structure.
Member shown in figure, toponym and corresponding mark: bridge road or culvert line structure thing 1, changeover portion 10, changeover portion surface layer of subgrade bed 20, non-changeover portion surface layer of subgrade bed 30, surface layer of subgrade bed lower floor 31, surface layer of subgrade bed upper strata 32, bottom layer of subgrade 40, embankment noumenon 50.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1, Subgrade Bed of High-speed Railway of the present utility model top layer and changeover portion structure comprise: changeover portion 10, is arranged on bridge road or contains line structure thing junction; Changeover portion surface layer of subgrade bed 20, is arranged on changeover portion 10 surface layer of subgrade bed positions, top; Non-changeover portion surface layer of subgrade bed 30, is arranged on surface layer of subgrade bed position, non-changeover portion top; Bottom layer of subgrade 40 fills at embankment noumenon 50 tops; Embankment noumenon 50 fills on foundation soil.
Described changeover portion 10, changeover portion surface layer of subgrade bed 20, non-changeover portion surface layer of subgrade bed 30 adopt the sandy gravel of admixture cement to fill, and its particle size range meets Design of High-speed Railway technical requirements.Utilize sandy gravel to make graded broken stone material, make a certain proportion of cement of admixture in graded broken stone material at sandy gravel, can improve the mixed material intensity compacting criteria relevant with easily meeting high-speed railway subgrade that sandy gravel is made, thereby can effectively solve high-speed railway changeover portion subgrade bed top layer 20, non-changeover portion surface layer of subgrade bed 30 and changeover portion 10 and lack qualified graded broken stone problem of materials, and save construction investment, this structure construction is simple, good economy performance, has wide popularizing application prospect.
With reference to Fig. 2, in the time that the bottom layer of subgrade 40 of embankment body adopts AB group filler to fill, non-changeover portion surface layer of subgrade bed 30 is made single layer structure.In the time that the bottom layer of subgrade 40 of embankment body adopts conditioned soil to fill, non-changeover portion surface layer of subgrade bed 30 is made the double-decker on surface layer of subgrade bed lower floor 31, surface layer of subgrade bed upper strata 32, surface layer of subgrade bed lower floor 31 fills at bottom layer of subgrade 40 tops, and fill at surface layer of subgrade bed lower floor 31 tops on surface layer of subgrade bed upper strata 32.
With reference to Fig. 2, in the time that the bottom layer of subgrade 40 of embankment body adopts conditioned soil to fill, non-changeover portion surface layer of subgrade bed 30 is made the double-decker on surface layer of subgrade bed lower floor 31, surface layer of subgrade bed upper strata 32, surface layer of subgrade bed lower floor 31 grain diameters are less than surface layer of subgrade bed upper strata 32 grain diameters, thereby be conducive to avoid surface layer of subgrade bed 30 under Train induced load effect to be invaded in conditioned soil bottom layer of subgrade 40, the generation of the disease of can effectively avoiding rising soil.
See figures.1.and.2, sandy gravel is made the collocation of graded broken stone admixture cement amount proportioning and is preferably: (1) changeover portion 10 cement mixing content 3% → changeover portion surface layer of subgrade bed 20 cement mixing contents 5% → non-changeover portion surface layer of subgrade bed 30 cement mixing contents 3%; (2) changeover portion 10 cement mixing contents are 5% → changeover portion surface layer of subgrade bed, 20 cement mixing contents 8% → non-changeover portion surface layer of subgrade bed 30 cement mixing contents 5%.
In the graded broken stone of making at sandy gravel, mix different cement consumptions, utilize the intensity of cement amount control graded broken stone mixture and be beneficial to and meet the requirement of high-speed railway correlation technique, simultaneously different piece is mixed different cement amounts and can meet the problem of Rigidity Matching, meets knuckle and uneven compliance requirement between roadbed and works simultaneously.
Some principles of the above just explain through diagrams the utility model Subgrade Bed of High-speed Railway top layer and changeover portion structure, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (4)
1. Subgrade Bed of High-speed Railway top layer and changeover portion structure, is characterized in that it comprises: changeover portion (10), is arranged on bridge road or contains line structure thing (1) junction; Changeover portion surface layer of subgrade bed (20), is arranged on surface layer of subgrade bed position, changeover portion (10) top; Non-changeover portion surface layer of subgrade bed (30), is arranged on surface layer of subgrade bed position, non-changeover portion top; Bottom layer of subgrade (40) fills at embankment noumenon (50) top; Embankment noumenon (50) fills on foundation soil.
2. Subgrade Bed of High-speed Railway as claimed in claim 1 top layer and changeover portion structure, is characterized in that: described changeover portion (10), changeover portion surface layer of subgrade bed (20), non-changeover portion surface layer of subgrade bed (30) adopt the sandy gravel of admixture cement to fill.
3. Subgrade Bed of High-speed Railway as claimed in claim 1 top layer and changeover portion structure, is characterized in that: described bottom layer of subgrade (40) adopts AB group filler to fill, and non-changeover portion surface layer of subgrade bed (30) is single layer structure.
4. Subgrade Bed of High-speed Railway as claimed in claim 1 top layer and changeover portion structure, it is characterized in that: when described bottom layer of subgrade (40) adopts conditioned soil to fill out, non-changeover portion surface layer of subgrade bed (30) is by surface layer of subgrade bed lower floor (31), the compound formation in surface layer of subgrade bed upper strata (32), surface layer of subgrade bed lower floor (31) fills at bottom layer of subgrade (40) top, fill at surface layer of subgrade bed lower floor (31) top on surface layer of subgrade bed upper strata (32), and surface layer of subgrade bed lower floor (31) particle size is less than the particle size of surface layer of subgrade bed upper strata (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137500.5U CN203782495U (en) | 2014-03-25 | 2014-03-25 | High-speed railway road subgrade bed surface and transition section structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137500.5U CN203782495U (en) | 2014-03-25 | 2014-03-25 | High-speed railway road subgrade bed surface and transition section structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203782495U true CN203782495U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420137500.5U Expired - Fee Related CN203782495U (en) | 2014-03-25 | 2014-03-25 | High-speed railway road subgrade bed surface and transition section structure |
Country Status (1)
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| CN (1) | CN203782495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862521A (en) * | 2015-01-20 | 2016-08-17 | 中铁二院工程集团有限责任公司 | Roadbed foundation bed structure of heavy haul railway |
| CN105887587A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Turnout zone and non-turnout zone transition section structure for medium and low-speed magnetic levitation low implantation line |
-
2014
- 2014-03-25 CN CN201420137500.5U patent/CN203782495U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862521A (en) * | 2015-01-20 | 2016-08-17 | 中铁二院工程集团有限责任公司 | Roadbed foundation bed structure of heavy haul railway |
| CN105887587A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Turnout zone and non-turnout zone transition section structure for medium and low-speed magnetic levitation low implantation line |
| CN105887587B (en) * | 2016-04-29 | 2017-06-13 | 中铁第四勘察设计院集团有限公司 | A kind of low circuit switch area of putting of medium-and low-speed maglev is with non-switch area transition section structure |
| WO2017185906A1 (en) * | 2016-04-29 | 2017-11-02 | 中铁第四勘察设计院集团有限公司 | Transitional structure for turnout and non-turnout zones in low-set, mid-to-low speed magnetic levitation lines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 |