CN203212970U - Red clay roadbed structure - Google Patents
Red clay roadbed structure Download PDFInfo
- Publication number
- CN203212970U CN203212970U CN2013201537857U CN201320153785U CN203212970U CN 203212970 U CN203212970 U CN 203212970U CN 2013201537857 U CN2013201537857 U CN 2013201537857U CN 201320153785 U CN201320153785 U CN 201320153785U CN 203212970 U CN203212970 U CN 203212970U
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- Prior art keywords
- layer
- waterproof
- admaic earth
- low liquid
- liquid limit
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- 239000004927 clay Substances 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000004746 geotextile Substances 0.000 claims abstract description 21
- 239000002689 soil Substances 0.000 claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000005213 imbibition Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000005945 translocation Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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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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- Road Paving Structures (AREA)
Abstract
The utility model discloses a red clay road bed structure, a layer of drainage isolation cushion layer (13) is laid at the bottom of the road bed, a layer of low liquid limit clay filling layer (7) is laid above the drainage isolation cushion layer (13), a red clay filling layer formed by red clay (5), geogrid (8) and medium fine sand (15) which are alternately laid in a layered way is laid above the low liquid limit clay filling layer (7), the red clay filling layer is sealed and wrapped with waterproof geotextile (14), a coarse grain soil layer (6), a waterproof subbase layer (3), a waterproof base layer (2) and a waterproof road surface (1) are sequentially arranged above the red clay filling layer, a layer of side geogrid (10) is respectively laid in the middle of the low liquid limit clay filling layers (7) at the two sides, the side geogrid (10) is stabilized by U-shaped nails (9), inverted filter layers (11) and permeable pipes are laid at the two sides of the low liquid limit clay filling layer (7), and laying a layer of turf (12) on the outer layer of the roadbed slope. The utility model discloses can keep the inside dry state that becomes of road bed, ensure that red clay embankment is in good dry state of holding power all the time.
Description
Technical field
The utility model relates to a kind of road structure, particularly relate to a kind of admaic earth road structure that keeps the inner dry state of southern area of heavy rainfull roadbed, be used for avoiding the admaic earth embankment to fill a layer imbibition, dehydration and shrink and a lot of map crackings occur and intensity reduces, improve the long-term functional performance that adopts the embankment that admaic earth fills.
Background technology
China's admaic earth mainly is distributed in south, as provinces such as Guangxi, Guizhou, Yunnan, Guangdong and Hunan, be distributed in stubborn slope and the intermountain basin in front of the mountains of mountain area or knob more, often form short massif and ridge, ridge landform, always expose area and reach more than 20 ten thousand square kilometres.Admaic earth is a kind of special roadbed filling material, has special engineering propertiess such as high-moisture percentage, high liquid limit, high void ratio, and compacting is quite difficult in subgrade construction.It is many to add the southern area rainwater, longterm strength and the stability decreases of admaic earth roadbed under drying and watering cycle effect and action of traffic loading repeatedly, make roadbed produce multiple diseases, at present, often adopt bedding to change greatly for the embankment construction in admaic earth area and fill out or improve the scheme that expansive soil is reinforced bedding.The former needs a large amount of non-admaic earth material sources, simultaneously, also causes work such as a large amount of expropriations of land, removal; The latter, construction technology complexity, duration are waited slowly.
For using admaic earth as embankment fill material better, should optimize road surface structare layer, improve infiltration draining and anti-drainage facility, avoid water translocation to enter admaic earth inside, guarantee that the admaic earth embankment fill material is in good drying all the time and holds the power state.
Different engineering materials is used, and to improve the resistance to overturning of structure, i.e. soil stabilization technology is human widely used a kind of technological means since ancient times.Up to the present, the building synthetic materials is a large amount of engineering construction fields that are applied to, and building synthetic materials product commonly used in the engineering has: building fabric, geomembrane, geo-grid, geosynthetics reinforced bands, geonet and geotechnical grid etc.Wherein, geo-grid is a kind of of many uses and reinforcement material convenient, that consolidation effect is good of constructing, a large amount of geo-grid consolidated subsoils that adopt in the road construction of China; And geotextiles is a kind of broad-spectrum closed material, can form impermeable barrier in soil layer.
Geo-grid is mainly used in as reinforcement material and fills soil layer, and generally utilization is laid in layering in side slope barricade, roadbed banket.According to force way, be divided into unidirectional and two-way two kinds of forms.It plays reinforcement in the soil body and the constraint solid particle relatively moves, and simultaneously, it can make the soil stress of reinforcement material both sides be evenly distributed, and makes that the soil body in the certain limit also is subjected to " indirect reinforcing " effect around it, strengthens globality and the rigidity of soil.
The utility model content
Technical problem to be solved in the utility model provides a kind of roadbed inside that can keep and becomes dry state, guarantees that the layer that fills that admaic earth and middle fine sand soil are formed is in the workable admaic earth road structure that good drying is held the power state all the time.
In order to solve the problems of the technologies described above, the admaic earth road structure that the utility model provides, be equipped with one deck draining in the roadbed bottom and isolate bed course, above bed course is isolated in described draining, be equipped with one deck low liquid limit clay and fill layer, described low liquid limit clay fill layer above be equipped with admaic earth and fill layer, described admaic earth fills layer by admaic earth, geo-grid and middle fine sand layering replace making and form, described admaic earth fills layer sealing and is coated with the waterproof geotextiles, the described admaic earth that is coated with described waterproof geotextiles fill the layer above be provided with the coarse grain soil layer, above described coarse grain soil layer, be provided with waterproof subbase, above described waterproof subbase, be provided with waterproof basic unit, above described waterproof basic unit, be equipped with waterproof pavement, the both sides of filling layer at the described admaic earth that is coated with described waterproof geotextiles are provided with low liquid limit clay and fill a layer anti-package, the described low liquid limit clay of both sides fills the centre of layer and respectively lays one deck side geo-grid, and it is with staple that described side geo-grid is firm, the both sides of filling layer at described low liquid limit clay are equipped with loaded filter and are provided with water-permeable pipe, at the outer one deck turf of laying of roadbed side slope.
Fill the thickness that the low liquid limit clay of the bottom of layer laying fills layer at the described admaic earth that is coated with described waterproof geotextiles and be at least 20cm, with described admaic earth and geo-grid alternately fill described in each layer thickness of fine sand be 10cm.
Described water-permeable pipe is flexible porous tube.
Adopt the admaic earth road structure of technique scheme, the low liquid limit clay that 20cm is laid in the waterproof geotextiles bottom of sealing fills layer and draining separation layer, following embankment or the moisture in the foundation soil of avoiding capillarity to cause fill layer migration to the admaic earth that is formed by admaic earth, geo-grid and middle fine sand layering making, guaranteeing that admaic earth fills layer can imbibition, dehydration is shunk and a lot of map crackings occurred and intensity reduces, thereby cause roadbed to destroy, guarantee that admaic earth fills layer and is in dry state all the time.Fill admaic earth in the layer at the admaic earth that is coated by the waterproof geotextiles, geo-grid and middle fine sand layering making, the coarse grain soil layer on this waterproof geotextiles institute's covered section and its top, waterproof (end) basic unit, waterproof pavement forms closed system, and in the side slope both sides loaded filter is set, and be provided with flexible porous tube and in time the moisture in the roadbed discharged, stop the moisture diffusion effect by the both sides side slope of rainfall infiltration and rainwater to enter admaic earth and fill layer, each making one deck geo-grid of both sides side slope, and it is with staple that it is firm, lay one deck turf at the side slope outermost layer again, increase the stability of side slope.The road surface adopts fine and close impermeable material to lay, and makes whole admaic earth fill layer and is in dry stable state.
In sum, the utility model is to fill water proof system that layer bottom, top and both sides form sealing at admaic earth to stop the extraneous moisture admaic earth of moving into to fill layer, the road surface is that impermeable material is laid, and in time rainwater is discharged from the road surface by having the outward-dipping gradient.So the long-term drying that the utility model can keep admaic earth to fill after layer construction finished is stable, make admaic earth road structure monolithic stability, imbibition, dehydration can not take place shrink and a lot of map crackings occur and breakoff phenomenons such as intensity reduction, fill a kind of feasible construction technology method that provides for admaic earth is used for embankment.
Description of drawings
Fig. 1 is the structural representation of waterproof geotextiles of the present utility model.
Fig. 2 is the structural representation of geo-grid of the present utility model.
Fig. 3 lays structural representation after filling for the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, describe a kind of admaic earth road structure that keeps the inner dry state of roadbed in detail.
Referring to Fig. 1, Fig. 2 and Fig. 3, be equipped with one deck draining in the roadbed bottom and isolate bed course 13, above bed course 13 is isolated in draining, be equipped with one deck low liquid limit clay and fill layer 7, fill the thickness that the low liquid limit clay of the bottom of layer laying fills layer 7 at the admaic earth that is coated with waterproof geotextiles 14 and be at least 20cm, low liquid limit clay fill layer 7 above be equipped with admaic earth and fill layer, admaic earth fills layer by admaic earth 5, geo-grid 8 and middle fine sand 15 layerings replace making and form, each layer thickness of the middle fine sand 15 that alternately fills with admaic earth 5 and geo-grid 8 is 10cm, admaic earth fills layer sealing and is coated with waterproof geotextiles 14, the admaic earth that is coated with waterproof geotextiles 14 fill the layer above be provided with coarse grain soil layer 6, above coarse grain soil layer 6, be provided with waterproof subbase 3, above waterproof subbase 3, be provided with waterproof basic unit 2, above waterproof basic unit 2, be equipped with waterproof pavement 1, the admaic earth that is coated with waterproof geotextiles 14 fill the layer both sides be provided with low liquid limit clay fill the layer 7 anti-package, the low liquid limit clay of both sides fills the centre of layer 7 and respectively lays one deck side geo-grid 10, and it is with staple 9 that side geo-grid 10 is firm, the both sides of filling layer 7 at low liquid limit clay are equipped with loaded filter 11 and are provided with flexible porous tube 4, at the outer one deck turf 12 of laying of roadbed side slope.
As shown in Figure 1, waterproof geotextiles 14 is " mouth " font.As shown in Figure 3, when laying is filled, through after the smooth compacting, fill layer 7 anti-package with low liquid limit clay respectively at road surface the right and left, lay coarse-grained soil layer 63 times at waterproof subbase, and thereunder be equipped with waterproof geotextiles 14 and fill admaic earth and fill layer, admaic earth fills layer by admaic earth 5, geo-grid 8 and middle fine sand 15 layerings replace making and form, waterproof geotextiles 14 sealing coats admaic earth and fills layer back and fill low liquid limit clay in both sides and fill layer 7 and fully compactings, low liquid limit clay fills the centre of layer 7 and respectively lays one deck side geo-grid 10, and it is with staple 9 that side geo-grid 10 is firm, the both sides of filling layer 7 at low liquid limit clay are equipped with loaded filter 11, and be provided with flexible porous tube 4, again at the outer one deck turf 12 of laying of roadbed side slope, lay waterproof basic unit 2 at waterproof subbase 3, lay waterproof pavement 1 in waterproof basic unit 2 again.
Claims (3)
1. admaic earth road structure, it is characterized in that: be equipped with one deck draining in the roadbed bottom and isolate bed course (13), above bed course (13) is isolated in described draining, be equipped with one deck low liquid limit clay and fill layer (7), the top of filling layer (7) at described low liquid limit clay is equipped with admaic earth and fills layer, described admaic earth fills layer by admaic earth (5), geo-grid (8) and middle fine sand (15) layering replace making and form, described admaic earth fills layer sealing and is coated with waterproof geotextiles (14), the top of filling layer at the described admaic earth that is coated with described waterproof geotextiles (14) is provided with coarse grain soil layer (6), be provided with waterproof subbase (3) in described coarse grain soil layer (6) top, be provided with waterproof basic unit (2) in the top of described waterproof subbase (3), be equipped with waterproof pavement (1) in the top of described waterproof basic unit (2), the described admaic earth that is coated with described waterproof geotextiles (14) fill the layer both sides be provided with low liquid limit clay fill the layer (a 7) anti-package, the described low liquid limit clay of both sides fills the centre of layer (7) and respectively lays one deck side geo-grid (10), and it is with staple (9) that described side geo-grid (10) is firm, the both sides of filling layer (7) at described low liquid limit clay are equipped with loaded filter (11) and are provided with water-permeable pipe, at the outer one deck turf (12) of laying of roadbed side slope.
2. admaic earth road structure according to claim 1, it is characterized in that: fill the thickness that the low liquid limit clay of the bottom of layer laying fills layer (7) at the described admaic earth that is coated with described waterproof geotextiles (14) and be at least 20cm, each layer thickness of the described middle fine sand (15) that alternately fills with described admaic earth (5) and geo-grid (8) is 10cm.
3. admaic earth road structure according to claim 1 and 2, it is characterized in that: described water-permeable pipe is flexible porous tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201537857U CN203212970U (en) | 2013-03-29 | 2013-03-29 | Red clay roadbed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201537857U CN203212970U (en) | 2013-03-29 | 2013-03-29 | Red clay roadbed structure |
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| Publication Number | Publication Date |
|---|---|
| CN203212970U true CN203212970U (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201537857U Expired - Fee Related CN203212970U (en) | 2013-03-29 | 2013-03-29 | Red clay roadbed structure |
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| CN (1) | CN203212970U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510441A (en) * | 2013-10-16 | 2014-01-15 | 江苏省镇江市路桥工程总公司 | Three-dimensional-drainage roadbed structure for preventing water damage of road in cold region and construction method thereof |
| CN103541287A (en) * | 2013-10-21 | 2014-01-29 | 马银华 | Pavement structure with comprehensive waterproof reinforced roadbed as well as construction method of pavement structure |
| CN103556556A (en) * | 2013-11-18 | 2014-02-05 | 贵州正业工程技术投资有限公司 | Backwater structure of carbonate rock fill foundation and setting method thereof |
| CN103556558A (en) * | 2013-10-21 | 2014-02-05 | 马银华 | Pavement construction with hierarchically completely encapsulated roadbed and construction method thereof |
| CN105297570A (en) * | 2015-09-25 | 2016-02-03 | 湘潭大学 | Special soil subgrade structure and construction method thereof |
| CN110541336A (en) * | 2019-09-11 | 2019-12-06 | 上海缘界体育发展有限公司 | Structure of off-road track slope surface node and construction method thereof |
| CN111472222A (en) * | 2020-04-24 | 2020-07-31 | 牛诗哲 | Multilayer type highway structure and construction method thereof |
| CN113417183A (en) * | 2021-07-26 | 2021-09-21 | 招商局重庆交通科研设计院有限公司 | Red clay roadbed and construction method |
| CN114134880A (en) * | 2021-09-13 | 2022-03-04 | 中电建路桥集团有限公司 | Homogeneous dam drainage structure and construction method thereof |
-
2013
- 2013-03-29 CN CN2013201537857U patent/CN203212970U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510441A (en) * | 2013-10-16 | 2014-01-15 | 江苏省镇江市路桥工程总公司 | Three-dimensional-drainage roadbed structure for preventing water damage of road in cold region and construction method thereof |
| CN103510441B (en) * | 2013-10-16 | 2015-06-17 | 江苏省镇江市路桥工程总公司 | Three-dimensional-drainage roadbed structure for preventing water damage of road in cold region and construction method thereof |
| CN103556558B (en) * | 2013-10-21 | 2015-06-24 | 重庆交通大学 | Pavement construction with hierarchically completely encapsulated roadbed and construction method thereof |
| CN103541287A (en) * | 2013-10-21 | 2014-01-29 | 马银华 | Pavement structure with comprehensive waterproof reinforced roadbed as well as construction method of pavement structure |
| CN103556558A (en) * | 2013-10-21 | 2014-02-05 | 马银华 | Pavement construction with hierarchically completely encapsulated roadbed and construction method thereof |
| CN103556556B (en) * | 2013-11-18 | 2015-12-02 | 贵州正业工程技术投资有限公司 | A kind of carbonate rock fill foundation backwater structure and method to set up thereof |
| CN103556556A (en) * | 2013-11-18 | 2014-02-05 | 贵州正业工程技术投资有限公司 | Backwater structure of carbonate rock fill foundation and setting method thereof |
| CN105297570A (en) * | 2015-09-25 | 2016-02-03 | 湘潭大学 | Special soil subgrade structure and construction method thereof |
| CN110541336A (en) * | 2019-09-11 | 2019-12-06 | 上海缘界体育发展有限公司 | Structure of off-road track slope surface node and construction method thereof |
| CN111472222A (en) * | 2020-04-24 | 2020-07-31 | 牛诗哲 | Multilayer type highway structure and construction method thereof |
| CN113417183A (en) * | 2021-07-26 | 2021-09-21 | 招商局重庆交通科研设计院有限公司 | Red clay roadbed and construction method |
| CN114134880A (en) * | 2021-09-13 | 2022-03-04 | 中电建路桥集团有限公司 | Homogeneous dam drainage structure and construction method thereof |
| CN114134880B (en) * | 2021-09-13 | 2023-03-21 | 中电建路桥集团有限公司 | Homogeneous dam drainage structure and construction method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140329 |