CN102011394A - Method for reinforcing aeolian sandy soil by polypropylene fibers - Google Patents
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Abstract
The invention discloses a method for reinforcing aeolian sandy soil by polypropylene fibers. The method comprises the following steps: selecting materials for preparing fiber aeolian sandy soil, wherein the length of the polypropylene fiber is 18mm, the mix ratio of the fiber is 0.3 percent, and the aeolian sandy soil materials are air-dried aeolian sand or aeolian sandy soil (the moisture content accounts for 11.2wt%); according to the proportioning scheme, closely and completely mixing fine TEXSOL with aeolian sandy soil particles by way of spraying, so that a composite three-dimensional spatial structure is formed by the TEXSOL and the aeolian sandy soil; and carrying out mechanical compaction on the composite fiber aeolian sandy soil subjected to spraying, wherein the compaction method and standard of the composite fiber aeolian sandy soil are same as those of common soil, so that the compaction density of the aeolian sandy soil reaches 100 percent of the standard compaction density, and the fiber aeolian sandy soil is compacted closely. By utilizing the method in earth-filled dams, retaining walls and the drainage works of the earth-filled dams, the water stability of the interior of the soil body can be effectively improved, the shearing strength and tensile strength of the soil body can be obviously improved, and the construction process is simple; and because the fiber content of the fiber aeolian sandy soil is very low, the method has the advantages of cheapness and environmental protection.
Description
Technical field
The present invention relates to soil stabilization field in the geotechnical engineering, be specifically related to the method that a kind of polypropylene fibre is reinforced the aeolian accumulation sandy soil.
Background technology
The aeolian accumulation sandy soil are a kind of unfavorable foundation soil of engineering property extreme difference, the engineering harm with all many-sides.At present, adopt reinforcement method for the drift-sand land reform research of very handling problems in the geotechnical engineering, the level that generally mostly is is to reinforcement method, and seldom it is effectively reinforced with engineering and handles to the aeolian accumulation sandy soil from three dimensions Reinforced Mechanism angle.The material that general traditional horizontal reinforcement method uses mostly is banded or netted rib, and rib mostly is that horizontal orientation is arranged in soil, thereby can only control the lateral displacement of the soil body, can not effect a radical cure the harm of drift-sand geotechnique journey completely.The tencel reinforcement method of this aeolian accumulation sandy soil, can solve the defectives of horizontal reinforcement material on performance such as geotextile, geotextiles, change general aeolian accumulation sandy soil reinforcement method and in the soil body, form some potential weak faces, the bad or later stage load-bearing of construction and cause the damaged of horizontal reinforcement face and can not suppress the deficiency that deformation failure may appear in except that lateral displacement other directions.
Summary of the invention
The object of the present invention is to provide a kind of method, make the aeolian accumulation sandy soil of reinforcing through polypropylene fibre, when being subjected to the external force effect, the crooked interlocking power that interweaves between frictional resistance between the fiber and the soil body or snap-in force and fiber, the common three dimensions mesh skeleton structure that forms produces the space constraint effect of fiber to the soil body, constitutes the three dimensions complex, integral body is stressed jointly, compatible deformation, belongs to the volume reinforcement.The space constraint power of fiber and soil body construction can improve soil body failure strain and resistance to tension, and the restriction soil lateral improves soil strength and resistance to overturning.Therefore, fiber mixes the engineering properties that can improve drift-sand well.
The present invention is achieved in that step is as follows:
1) preparation fiber drift-sand soil material is chosen: polypropylene fibre specification 18mm, and the fiber use level is 0.3%, adopting air-dry drift-sand or water content weight ratio is 11.2% aeolian accumulation sandy soil.
2) 1 mix proportion scheme set by step, by spray will be very thin geotechnological synthetic fibers with the fusion closely of aeolian accumulation sandy soil soil particle, fully mix, make that fiber is approximate to be the three dimensions composite construction with the aeolian accumulation sandy soil.
3) will spray good composite fibre aeolian accumulation sandy soil and directly adopt mechanical ramming, debulking methods and standard are same with the general soil phase, make the compactness of aeolian accumulation sandy soil reach standard and hit 100% of real density, so that fiber aeolian accumulation sandy soil are the tightst.
Wherein, for water content in the step 1 situation of 11.2% aeolian accumulation sandy soil, need to adopt bound edge to handle, to reach the intensity that drift-sand soil base handles and the requirement of resistance to overturning; The fiber use level is meant the percentage of fibre weight and air-dry aeolian accumulation sandy soil weight.
The described three dimensions composite construction that is is to reinforce the aeolian accumulation sandy soil by adding certain proportion polypropylene fibre in the aeolian accumulation sandy soil to form the three dimensions complex, for the composite reinforced method of this random distribution three dimensions of fiber, even and random being distributed in the aeolian accumulation sandy soil of polypropylene fibre, therefore polypropylene fibre aeolian accumulation sandy soil not only can limit the lateral deformation of aeolian accumulation sandy soil, also can control the vertical deformation of aeolian accumulation sandy soil, and can limit the distortion that all directions may occur, it has the mechanical property of general reinforcement aeolian accumulation near-isotropic that sandy soil do not have and good engineering properties; Be specially polypropylene fibre is reinforced the thick H of aeolian accumulation sandy soil layering from top to bottom, bed thickness is Δ H, is divided into the N layer, when being subjected to external force to do the time spent, because the connection of fiber between layer and the layer must be subjected to pining down of the last layer soil body, it can not be out of shape, and the like, in layer pin down down from top to bottom, make next layer soil body restrictive function be arranged to the last layer soil body, this link system constraint layer by layer, soil deformation is reduced, and resistance to overturning strengthens, thereby plays the effect of controlled deformation.
The present invention has following beneficial effect:
Geotechnique's synthetic fibers soil technology has himself characteristics and superiority as a kind of novel geotechnological reinforcement technology.It can be used to renovate side slope, builds barricade, reinforces embankment, handles soft base, resist effects such as impacting, reduce noise.
1. fiber punishment aeolian accumulation sandy soil are all showing superiority aspect terms of mechanics and the hydraulics.Aspect mechanical property, the used material of fiber aeolian accumulation sandy soil is the polypropylene fibre that has than high-tensile, in fiber aeolian accumulation sandy soil, the distribution of fiber is at random, can think multi-directionly, omnibearing, can limit the distortion that all directions may occur, this makes fiber aeolian accumulation sandy soil show tangible isotropic characteristics, thereby make fiber aeolian accumulation sandy soil technology in engineering is used, have good engineering, can be applied in the three-dimensional engineering structures.From mechanics viewpoint, fiber aeolian accumulation sandy soil are a kind of homogeneous, nonrigid, new material that not embrittlement can adapt to foundation deformation, and this point is adapted to cause because of differential settlement the situation of local distortion especially.This material of fiber under static load and reloading effect, can improve stress propagation and stress distribution, thereby improves the stress performance of soil preferably, avoids the discontinuity in the soil body deformation process.Therefore, in the improvement of the basal layer of highway, railway, soft foundation and earthquake proof construction, can exhibit one's skill to the full.From the hydraulics viewpoint, very thin fibre mixes with soil particle, has constituted a three dimensional fluid flow net that is combined in the soil body.Thereby can improve the interior corrosion resistance of soil particle.Therefore the side slope that adds intrinsic water seepage flow with fiber aeolian accumulation sandy soil is very suitable.This advantage also makes fiber soil can improve the water stability of inside soil body effectively in row's (oozing) water conservancy project journey of earth dam, retaining wall, earth dam.
2. polypropylene fibre makes fiber play good reinforced action with its high strength and aeolian accumulation sandy soil good binding, obviously improves the shearing resistance and the tensile strength of the soil body, and its later strength also is significantly improved.In addition, fiber can also reduce the loss of soil sample peak strength, increases the residual strength after soil sample is destroyed, improve the destruction toughness of soil sample, significantly improve the cohesion of the soil body, strengthen the plasticity of the soil body, the distortion of restriction aeolian accumulation sandy soil, the intensity and the engineering properties of the raising soil body.
3. fiber aeolian accumulation sandy soil are compared with other mode reinforced earths, and work progress is simple; Compare with rendzinas, cement-soil, also can not produce harm during mix human body; Debulking methods and standard and the general soil phase are together.Not only be suitable for the aeolian accumulation sandy soil, and be applicable to general class soil, or the bigger fields such as frozen soil, collapsible loess, sandy soil, weak soil and expansive soil of vertical deformation, not being only applicable to these native house foundation reinforces, and be suitable in the embankment embankment engineerings such as railway, highway, along with the development of chemical fibre industry, some inexpensive fiber products are selected for use for civil engineering field more and more.
4. fiber aeolian accumulation sandy soil can be as geotextile and geo-grid form some potential weak face, construction wrong or load-bearings because of reinforcement direction and bar spacing and the unfavorable problems such as reinforcement aspect breakage that occur in the soil body.
5. add the permeability that fiber does not influence soil, can guarantee the eliminating of excessive water in the soil.In addition, fiber has very high degree of porosity, has good draining, water filtering performance.And in the engineering that impervious materials such as retaining wall, dykes and dams, cofferdam need reinforcement, if then can change the permeability of the soil body and unfavorable, at this moment with having good antiscour, impermeabilisation destructive characteristics, not changing native infiltrative fiber aeolian accumulation sandy soil and just seem more meaningful to engineering with the additive method reinforcement.
7. owing to fiber content in the fiber aeolian accumulation sandy soil is very low, have the characteristics of the cheapness and the feature of environmental protection, need the aeolian accumulation sandy soil of usefulness also very cheap, and often can gather materials on the spot, can save material freight charges so its engineering cost and generally all be significantly less than other soil stabilization method.
8. fiber soil The Application of Technology scope is more extensive than general geotechnological reinforcement technology.
Description of drawings
Fig. 1 fiber and drift-sand soil particle contact surface schematic diagram;
Fig. 2 fiber is crooked distribution schematic diagram in the aeolian accumulation sandy soil;
Fig. 3 fiber distribution schematic diagram that in the aeolian accumulation sandy soil, interweaves;
Fig. 4 fiber aeolian accumulation sandy soil example 1 layering schematic diagram;
σ wherein
zBe vertical stress; σ
xBe horizontal stress; F is the frictional force of fiber and drift-sand soil particle; N is the pressure of fiber and drift-sand soil particle; P is fiber and interfibrous interlocking power.
The specific embodiment
Following the present invention is done describes in detail:
The present invention is the reinforcing of the special soil of a kind of drift-sand, to reach the requirement of engineering construction to bearing capacity of foundation soil.Fiber aeolian accumulation sandy soil are reinforced the composite construction that forms by fiber and aeolian accumulation sandy soil space, and manufacturing process is simple mechanical injection operation, and low production cost, raw material are pencil monofilament and the source and extensive that meets the demands.The cost of raw material is 16 yuan/kg.Polypropylene fibre pencil monofilament, fiber dimensious 18mm, from good dispersion, no water imbibition, the acid and alkali-resistance salt is high, and electrical and thermal conductivity is low, safety non-toxic, odorlessness.Fiber soil is compared with other mode reinforced earths, and work progress is simple; Compare with rendzinas, cement-soil, can not produce harm human body; Debulking methods and standard and the general soil phase are together.Short construction period, construction costs is low, and is reliable for effect, compares with other regulation methods to have tangible advantage.Geotechnique's synthetic fibers are reinforced the aeolian accumulation sandy soil as a kind of novel aeolian accumulation sandy soil reinforcement technology, be by spray will be very thin geotechnological synthetic fibers be blended together closely to become with aeolian accumulation sandy soil soil particle and have the three-dimensional hybrid material of mechanical characteristic and hydraulic characteristic preferably, come soil mass consolidation to form homogeneous three dimensions composite construction by in soil, adding certain proportion geotechnique synthetic fibers.For the composite reinforced method of this random distribution three dimensions of fiber, even and random being distributed in the soil of fiber.Therefore fiber soil not only can limit the lateral deformation of the soil body, also can control the vertical deformation of the soil body, and can limit the distortion that all directions may occur, it has the mechanical property of near-isotropic that general reinforced earth does not have and good engineering properties.Therefore, be suitable for solving the problem on deformation that often occurs in the drift-sand geotechnique journey.Fiber can effectively must be controlled the base engineering lateral deformation of drift-sand soil, vertical deformation, stress, strain, the shearing strain of drift-sand soil base engineering are greatly reduced, increase substantially the intensity and the resistance to overturning of soil, can effectively stop the formation and development of base engineering plastic zone, drift-sand soil, improved the bearing capacity of drift-sand soil base engineering, thereby reach the purpose of eliminating drift-sand soil base engineering sedimentation and deformation and differential settlement, efficient and permanently effective can carry out improvement and consolidation process to drift-sand soil nature.Can be widely used in the stabilization workss such as the improvement of basal layer, soft foundation on the highway subgrade slope, Expressway Embankment, retaining wall, slope stability, highway and the road that relate to the aeolian accumulation sandy soil and earthquake proof construction.
Fiber reinforced technology of the present invention not only is suitable for the aeolian accumulation sandy soil, and be applicable to general class soil, or field such as the bigger frozen soil of vertical deformation, collapsible loess, sandy soil, weak soil, mucky soil, expansive soil, be not only applicable to ground stabilization in these native construction works, and be suitable for implementing in the embankment embankment engineerings such as railway, highway efficient solidification.When being cut, fiber aeolian accumulation sandy soil are attended by cuts bloated phenomenon.Fiber aeolian accumulation sandy soil shear strength can reach more than the 100kpa, has stronger shear resistance, stability, durability.Above fiber and steel bar reinforced reinforcement means be need not other treatment process and technological means, non-environmental-pollution, with low cost, construction technology is simple, is easy to Industry Promotion.
For overcoming the deficiency that general aeolian accumulation sandy soil reinforcement method exists potential weak face, the breakage of reinforcement aspect possibility and can not suppress other direction deformation failures except that lateral deformation, the invention provides a kind of novel reinforcement method, the problem of thoroughly solved the very easily loose and displacement of aeolian accumulation sandy soil, bonding is poor, shear strength is low etc., greatly change the weakness of the yielding and sedimentation of aeolian accumulation sandy soil, further improved intensity and the stability of aeolian accumulation sandy soil.
Embodiment 1:
Polypropylene fibre is rolled into the cylinder of high 25cm, diameter 30cm, the polypropylene fibre ingot of every heavy 15kg.The aeolian accumulation sandy soil are transported to construction height by conveyer belt, the polypropylene fibre ingot is placed in the stuffing box that is provided with bobbin cradle and rises to construction height by the lifting machine, polypropylene fibre and aeolian accumulation sandy soil pressure are the air pressure spraying machine spraying operation of 2～3 crust, generally establish 10-20 nozzle ejection polypropylene fibre, jet velocity 20-25 each second rice, the flow of drift-sand is 6～7t/h, polypropylene fibre weight is 0.3% with the ratio of aeolian accumulation sandy soil weight, the rubber tube of spray fiber and drift-sand is sprayed back and forth, polypropylene fibre is evenly distributed in the aeolian accumulation sandy soil, construction in layer, both sides manually cooperate the trimming side slope, layered rolling, viscosity mount slope, protective thickness 5-10cm, or the husky bank protection of cement, become husky its bank protection of laying of cement with cement mixing with drift-sand, drift-sand is controlled at 1 with the cement weight ratio: 5-1: in 8 scopes, for preventing to expand with heat and contract with cold, the setting seam that contracts, spacing 5m stitches wide 1cm, thickness 5-7cm, to prevent wind erosion and damaged or destroyed by flood, last roadbed end face seal can effectively improve the dry density of aeolian sand subgrade end face, and is earth roadbed to build up the fiber drift-sand.In order to form the regulation side slope, sloping limit should be baffled, and in the 1.5m height below, with the vibrating plate compaction in layers, do not add compacting above.Requiring water content in the construction is 11.2% aeolian accumulation sandy soil, adopts bound edge to handle, and can make the compactness of aeolian accumulation sandy soil reach standard like this and hit 100% of real density, makes that polypropylene fibre aeolian accumulation sandy soil are the tightst.
Test method according to regulation in " highway earthwork test rule (CB/T50123-1999) " is carried out compaction test, adopt typical compacting method: light-dutyly hit test, the hammer quality is 2.5kg, compaction hammer hammer end diameter 51mm falls apart from 30.5cm, and every layer is hit several 25 times, divide three layers, compaction cylinder internal diameter 10.2cm, the high 11.6cm of tube, examination tube volume 947.4cm
3, it is 592.2kg/m that each layer hits real merit
3, measure maximum dry unit weight and optimum moisture content.
By the drift-sand standard compaction test, obtain result of the test and see Table one.
Table one dry density and water content relation curve
(1) adopting typical compacting method to measure the drift-sand maximum dry density is 1.6965g/cm
3With optimum moisture content be 11.2%, come the Control Engineering quality with this.
(2) drift-sand hit true property, " bimodal " phenomenon has appearred.The tamping curve of drift-sand, promptly dry density γ d and water content w relation curve often are the type of falling S, and this special soil body of drift-sand can be in water content hour and during optimum moisture content, and it is as shown in table 1 all can to obtain a relatively large dry density.Drift-sand is bigger in bone dry state dry density, can reach 1.6977g/cm
3, when increasing water content slightly, dry density reduces on the contrary, occurs the valley point of dry density value minimum on curve; But reach after 7.043% in water content, dry density increases with the increase of water content again, is that 11.2% o'clock maximum dry density is 1.6965g/cm until reaching optimum moisture content
3, after this dry density reduces with the increase of water content again, has presented the bimodal phenomenon at last.
Minimum dry density (the 1.6181g/cm of drift-sand
3) can reach maximum dry density (1.6965g/cm
3) more than 95%, but near the amplitude that dry density increases air-dry (water content is generally between 0～1%) and optimum moisture content is bigger, this has also illustrated drift-sand easily compacting under air-dry and optimum moisture content state, has real (optimum moisture content state) the two big characteristics of dry-pressing real (air dried condition) and wet pressing.
Further explain according to Figure of description 2,3, in fiber soil, fiber then be continuous bending, interlaced, be connected to each other, be mutually being present in the soil of network.The mechanism of action of fiber in the fiber soil is summarised as two aspects, i.e. " crooked mechanism " and " mechanism interweaves ".
(1) crooked mechanism is meant: the geometric shape of fibre in soil is countless turnover bendings, almost do not have straightway.When the soil body bears external force and makes the fiber tension, will produce pressure N and the frictional force f of fiber in the recessed side of fiber bending, thereby play the effect of soil mass consolidation, as shown in Figure 2 soil particle.
(2) mechanism that interweaves is meant: because the fiber of disorder distribution exists countless intertwined points in the soil, if be subjected to the effect of power at the fiber infall, when producing the trend of displacement, will run into other fiber and stop this displacement, it is the fiber that the stress deformation of any section fibre all can affect adjacent with it all directions, thereby form (three-dimensional) the stressed district in space, as shown in Figure 3.
Three-D space structure among the present invention is meant:
Reinforce the aeolian accumulation sandy soil by adding certain proportion fiber in the aeolian accumulation sandy soil and form the three dimensions complex.For the composite reinforced method of this random distribution three dimensions of fiber, even and random being distributed in the aeolian accumulation sandy soil of fiber.Therefore fiber aeolian accumulation sandy soil not only can limit the lateral deformation of aeolian accumulation sandy soil, also can control the vertical deformation of aeolian accumulation sandy soil, and can limit the distortion that all directions may occur, it has the mechanical property of general reinforcement aeolian accumulation near-isotropic that sandy soil do not have and good engineering properties.Therefore, be suitable for solving the problem on deformation that often occurs in the drift-sand geotechnique journey.
Further explain according to Figure of description 4:
Break the fiber soil sample into two with one's hands along surface of shear or arbitrary face, we find on whole aspect, fiber still intact and be exposed to outside.Illustrate that fiber soil can not produce typical pulling force and destroy, and fiber can obviously increase the resistance to tension of the soil body.
This phenomenon can be explained by the soil and the interlock action of fiber, be analyzed as follows.If the fiber thick H of soil layering from top to bottom, bed thickness is Δ H, is divided into the N layer, sees Fig. 4.When being subjected to external force to do the time spent, because the connection of fiber between layer and the layer must be subjected to pining down of the last layer soil body, its desire is moved can not.And the like, in layer pin down down from top to bottom, make next layer soil body restrictive function be arranged to the last layer soil body.This link system constraint layer by layer just can make soil deformation reduce, and resistance to overturning strengthens.This locking principle as long as every section of maintenance is motionless, just can guarantee that integral body is motionless, thereby play the effect of controlled deformation.
Claims (2)
1. a polypropylene fibre is reinforced the method for aeolian accumulation sandy soil, it is characterized in that step is as follows:
(1) preparation fiber drift-sand soil material is chosen: polypropylene fibre specification 18mm, and the fiber use level is 0.3%, adopting air-dry drift-sand or water content is the aeolian accumulation sandy soil of weight ratio 11.2%;
(2) 1 mix proportion scheme set by step, by spray will be very thin geotechnological synthetic fibers with the fusion closely of aeolian accumulation sandy soil soil particle, fully mix, make that fiber is approximate to be the three dimensions composite construction with the aeolian accumulation sandy soil;
(3) will spray good composite fibre aeolian accumulation sandy soil and directly adopt mechanical ramming, debulking methods and standard are same with the general soil phase, make the compactness of aeolian accumulation sandy soil reach standard and hit 100% of real density, so that fiber aeolian accumulation sandy soil are the tightst;
Wherein, for water content in the step 1 situation of 11.2% aeolian accumulation sandy soil, need to adopt bound edge to handle, to reach the intensity that drift-sand soil base handles and the requirement of resistance to overturning; The fiber use level is meant the percentage of fibre weight and air-dry aeolian accumulation sandy soil weight.
2. a kind of polypropylene fibre according to claim 1 is reinforced the method for aeolian accumulation sandy soil, it is characterized in that: the described three dimensions composite construction that is is to reinforce the aeolian accumulation sandy soil by adding certain proportion polypropylene fibre in the aeolian accumulation sandy soil to form the three dimensions complex, for the composite reinforced method of this random distribution three dimensions of fiber, even and random being distributed in the aeolian accumulation sandy soil of polypropylene fibre, therefore polypropylene fibre aeolian accumulation sandy soil not only can limit the lateral deformation of aeolian accumulation sandy soil, also can control the vertical deformation of aeolian accumulation sandy soil, and can limit the distortion that all directions may occur, it has the mechanical property of general reinforcement aeolian accumulation near-isotropic that sandy soil do not have and good engineering properties; Be specially polypropylene fibre is reinforced the thick H of aeolian accumulation sandy soil layering from top to bottom, bed thickness is Δ H, is divided into the N layer, when being subjected to external force to do the time spent, because the connection of fiber between layer and the layer must be subjected to pining down of the last layer soil body, it can not be out of shape, and the like, in layer pin down down from top to bottom, make next layer soil body restrictive function be arranged to the last layer soil body, this link system constraint layer by layer, soil deformation is reduced, and resistance to overturning strengthens, thereby plays the effect of controlled deformation.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691305A (en) * | 2012-05-18 | 2012-09-26 | 重庆交通大学 | Fiber reinforced earth and slope protection |
| CN103498459A (en) * | 2013-09-18 | 2014-01-08 | 河海大学 | Method of liquefaction resistance processing of filament reinforced sandy soil |
| CN104032727A (en) * | 2014-06-09 | 2014-09-10 | 河海大学 | Clay with high unconfined compressive strength |
| CN104846807A (en) * | 2015-04-09 | 2015-08-19 | 天津城建大学 | Polypropylene fiber ribbed salinized soil and curing method thereof |
| CN106320313A (en) * | 2016-08-19 | 2017-01-11 | 西北大学 | Composite reinforced loess foundation and construction method thereof |
| CN106522192A (en) * | 2016-12-07 | 2017-03-22 | 中国铁道科学研究院 | Soil body reinforcement fiber, roadbed and roadbed construction method |
| CN107012755A (en) * | 2017-04-19 | 2017-08-04 | 中铁七局集团第四工程有限公司 | Aeolian sand subgrade construction method |
| CN107903904A (en) * | 2017-11-23 | 2018-04-13 | 上海理工大学 | A kind of Polypropylene Fiber Reinforced improvement weak soil and preparation method thereof |
| CN110172953A (en) * | 2018-09-05 | 2019-08-27 | 南京理工大学 | Aeolian sand channel based on assorted fibre strengthens self-repair method |
| CN112746539A (en) * | 2020-12-24 | 2021-05-04 | 龙建路桥股份有限公司 | Little water compaction process for aeolian sand roadbed in desert area |
| CN112761135A (en) * | 2021-01-25 | 2021-05-07 | 温州大学 | Short fiber-geomembrane bag reverse filtering composite type horizontal drainage plate device for treating high-water-content dredged sludge and construction method thereof |
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| CN1932167A (en) * | 2006-07-25 | 2007-03-21 | 南京大学 | Chopped fiber reinforced rendzinas ground treatment method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691305A (en) * | 2012-05-18 | 2012-09-26 | 重庆交通大学 | Fiber reinforced earth and slope protection |
| CN103498459A (en) * | 2013-09-18 | 2014-01-08 | 河海大学 | Method of liquefaction resistance processing of filament reinforced sandy soil |
| CN104032727A (en) * | 2014-06-09 | 2014-09-10 | 河海大学 | Clay with high unconfined compressive strength |
| CN104846807A (en) * | 2015-04-09 | 2015-08-19 | 天津城建大学 | Polypropylene fiber ribbed salinized soil and curing method thereof |
| CN106320313A (en) * | 2016-08-19 | 2017-01-11 | 西北大学 | Composite reinforced loess foundation and construction method thereof |
| CN106522192B (en) * | 2016-12-07 | 2018-12-25 | 中国铁路总公司 | Soil stabilization fiber, roadbed and the method for constructing roadbed |
| CN106522192A (en) * | 2016-12-07 | 2017-03-22 | 中国铁道科学研究院 | Soil body reinforcement fiber, roadbed and roadbed construction method |
| CN107012755A (en) * | 2017-04-19 | 2017-08-04 | 中铁七局集团第四工程有限公司 | Aeolian sand subgrade construction method |
| CN107012755B (en) * | 2017-04-19 | 2019-06-04 | 中铁七局集团第四工程有限公司 | Aeolian sand subgrade construction method |
| CN107903904A (en) * | 2017-11-23 | 2018-04-13 | 上海理工大学 | A kind of Polypropylene Fiber Reinforced improvement weak soil and preparation method thereof |
| CN110172953A (en) * | 2018-09-05 | 2019-08-27 | 南京理工大学 | Aeolian sand channel based on assorted fibre strengthens self-repair method |
| CN112746539A (en) * | 2020-12-24 | 2021-05-04 | 龙建路桥股份有限公司 | Little water compaction process for aeolian sand roadbed in desert area |
| CN112761135A (en) * | 2021-01-25 | 2021-05-07 | 温州大学 | Short fiber-geomembrane bag reverse filtering composite type horizontal drainage plate device for treating high-water-content dredged sludge and construction method thereof |
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