CN201485765U - Novel low liquid limit silty soil subgrade - Google Patents
Novel low liquid limit silty soil subgrade Download PDFInfo
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- CN201485765U CN201485765U CN2009202250896U CN200920225089U CN201485765U CN 201485765 U CN201485765 U CN 201485765U CN 2009202250896 U CN2009202250896 U CN 2009202250896U CN 200920225089 U CN200920225089 U CN 200920225089U CN 201485765 U CN201485765 U CN 201485765U
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- low liquid
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Abstract
The utility model relates to a novel subgrade in the filed of highway subgrade filling construction, in particular to a novel low liquid limit silty soil subgrade filled and constructed by low liquid limit silty soil of Yellow River floodplain. The utility model has the technical scheme that the novel low liquid limit silty soil subgrade comprises a groundsill, wherein a road bank, a road bed and a road surface are sequentially arranged on the groundsill. The utility model is characterized in that the road bank is formed by milling multiple layers of low liquid limit silty soil on the groundsill. The utility model has the advantages that the problem of large obstruction of slow large-area construction schedule of other methods can be solved, the idle soil resources of Yellow River floodplain are used for filling and constructing the subgrade, a large amount of cost for Yellow River sludge cleaning and farm land expropriation is saved, the land is saved in the highway construction, the strictest farm land protection rule is performed, and the utility model meets the objective requirement of continuous, fast and healthy development of the highway construction.
Description
Technical field
The utility model relates to highway subgrade and fills a kind of novel roadbed in the field, specifically is a kind of novel low liquid limit silt roadbed that utilizes the end liquid limit silt of the Yellow River beach to fill.
Background technology
At present, rubble class soil, sand, explosion rock ballast and moisture content meet the cohesive soil of compacting requirement can be as the embankment earth material; The soil that contains turf, household garbage, tree root, humus is forbidden as roadbed filling; Peat, mud, frozen soil, strong expansive soil, organic soil and easy lava surpass the soil that allows content, must not be directly used in filling roadbedly, when really needing to use, must take technical measures to handle, and expend height; Land resources is non-renewable resource, saving the area is the great strategic issue that concerns whole national economy development and social stability, a large amount of soil resources are brought in the Yellow River from the upstream, but the Yellow River alluvial soil can not directly cause the serious waste of soil resource as the roadbed fill construction, beach Tu Yuan region, the Yellow River all is that Quaternary system covers, formation lithology mainly contains silt, flour sand, powder fine sand, salinized soil, is low liquid limit silt, and specific gravity of soil particle is 2.4～2.7g/cm
3, the maximum dry density of banketing is 1.60～1.75g/cm
3Best compacting moisture content is between 12%～15%, water stability is poor, almost do not have adhesion stress between soil particle, frictional resistance is also minimum, and is easily crushed, very fast drenched during immersion, easily become fluid state, the capillary water height of silty soil is big, very easily cause rainy season roadbed landslide, landslide, burst and become muddy when a thaw sets in, emit disease such as mud.For this reason, understand the Yellow River silt character and research and improve existing rolling apparatus, exploitation the Yellow River beach silty soil roadbed filling job practices becomes the problem that people pay close attention to.
Summary of the invention
The purpose of this utility model is exactly at existing situation, a kind of novel low liquid limit silt roadbed that provides a kind of low liquid limit silt that utilizes the Yellow River beach to fill.
Its technical scheme is: comprise top embankment, roadbed, the road surface of being provided with successively of ground, ground, described embankment is to roll with the low liquid limit silt of multilayer to form more than ground.
Described embankment bottom is the low liquid limit silt of 30cm, up rolls the low liquid limit silt of laying multilayer 20cm successively.
Effect of the present utility model is: solved and adopted the slow biggest obstacle of additive method large-area construction progress; The Yellow River beach soil resource that utilization is left unused is filling roadbed, has saved a large amount of expenses that the Yellow River desilting and requisition are ploughed, and saves the area in highway construction, carries out the strictest cultivated land protection system, is the objective requirement that highway construction is lasting, quick, develop in a healthy way.
Description of drawings
Accompanying drawing is the structural representation of present embodiment.
The specific embodiment:
With reference to accompanying drawing, present embodiment mainly comprises ground 1, the top embankment 7 that is provided with successively of ground 1, roadbed 5 and road surface 6, the auxilliary thick low liquid limit silt of 30cm 2 of establishing of the bottom of embankment 7, carrying sheep-foot roller with earth mover rolls to the thick low liquid limit silt of bottom 20cm and reaches standard-required, 30cm is thick altogether with the low liquid silt 4 of newly assisting the 2nd layer of 20cm that establishes for the thick low liquid limit silt 3 of top 10cm, roll to following 20cm with sheep-foot roller once more and reach standard-required, 30cm is thick altogether for top 10cm low liquid limit silt and the low liquid limit silt of the 3rd layer of 20cm, roll to following 20cm with sheep-foot roller once more and reach standard-required, be circulated to grey soil layer 5 successively.
Roll and adopt earth mover to carry sheep-foot roller to drag and shake, have vibration, roll and the tamping effect, can make the structural deterioration of topsoil forward after the unit pressure that rolling compaction is bigger, increase the 10cm earthing for this reason; Because of total compacting thickness 30cm, adopt exciting to increase consolidation effect, adopt this method, satisfy compaction requirement, and do not destroy fill structure.
The merit that dry density behind the fill compaction and compacting machinary apply thereon has certain relation, when the beginning compacting, the dry density of soil sharply increases, by the time during near the maximum dry density of soil, though that Compaction Effort increases is many, and the dry density of soil does not almost change, therefore, in practice of construction, blindly do not increase compacting counting too much, select corresponding compacting counting according to different degree of compaction intervals by the test section.
Concrete case: at Dongying the Yellow River highway bridge wiring engineering roadbed filling, state key highway Rongcheng to the Wuhai line Xinhe River is to hot village's section expressway works the tenth contract section roadbed filling successful implementation.
Claims (2)
1. novel low liquid limit silt roadbed comprises top embankment, roadbed, the road surface of being provided with successively of ground, ground it is characterized in that: described embankment is to roll with the low liquid limit silt of multilayer to form more than ground.
2. a kind of novel low liquid limit silt roadbed according to claim 1, it is characterized in that: described embankment bottom is the low liquid limit silt of 30cm, up rolls the low liquid limit silt of laying multilayer 20cm successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202250896U CN201485765U (en) | 2009-08-25 | 2009-08-25 | Novel low liquid limit silty soil subgrade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202250896U CN201485765U (en) | 2009-08-25 | 2009-08-25 | Novel low liquid limit silty soil subgrade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201485765U true CN201485765U (en) | 2010-05-26 |
Family
ID=42424652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202250896U Expired - Fee Related CN201485765U (en) | 2009-08-25 | 2009-08-25 | Novel low liquid limit silty soil subgrade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201485765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140770A (en) * | 2011-01-01 | 2011-08-03 | 科达集团股份有限公司 | Method for forming roadbed by earthing and rolling low liquid limit silt through sheep-foot roller |
| CN110143800A (en) * | 2019-06-10 | 2019-08-20 | 广西大学 | A kind of silt modification method |
| CN114775350A (en) * | 2022-03-23 | 2022-07-22 | 广西大学 | Comprehensive treatment method for low liquid limit silt subgrade |
-
2009
- 2009-08-25 CN CN2009202250896U patent/CN201485765U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140770A (en) * | 2011-01-01 | 2011-08-03 | 科达集团股份有限公司 | Method for forming roadbed by earthing and rolling low liquid limit silt through sheep-foot roller |
| CN110143800A (en) * | 2019-06-10 | 2019-08-20 | 广西大学 | A kind of silt modification method |
| CN114775350A (en) * | 2022-03-23 | 2022-07-22 | 广西大学 | Comprehensive treatment method for low liquid limit silt subgrade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170706 Address after: 257000, the Yellow River Road, Dongying District, Shandong City, Dongying Province, planning five West Road Science and technology enterprise accelerator E2-4-403 Patentee after: Shandong Keda infrastructure Co., Ltd. Address before: 257335 grand economic development zone, Guangrao County, Shandong, Dongying Patentee before: Keda Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20180825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |