CN201738208U - Roadbed structure for preventing road damage in seasonally frozen ground area - Google Patents
Roadbed structure for preventing road damage in seasonally frozen ground area Download PDFInfo
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- CN201738208U CN201738208U CN201020246220XU CN201020246220U CN201738208U CN 201738208 U CN201738208 U CN 201738208U CN 201020246220X U CN201020246220X U CN 201020246220XU CN 201020246220 U CN201020246220 U CN 201020246220U CN 201738208 U CN201738208 U CN 201738208U
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Abstract
The utility model discloses a roadbed structure for preventing road damage in seasonally frozen ground area. When the roadbed is constructed, a layer of composite drain prevention board is laid on the full-section within the width range of the original ground of roadbed foundation soil; lower embankment soil is filled on the composite drain prevention board until reaching the maximal frozen depth level of the road; a composite drain prevention board at the maximal frozen depth is laid along the full-section of the roadbed; then upper embankment foundation soil is filled until reaching the designed embankment level; dimensional geogrids are laid on the full-section on the top surface of the roadbed; the composite drain prevention board is laid at the maximal frozen depth level of the road and the full-section of the original ground at the bottom of the embankment; the dimensional geogrids are laid on the top surface of the roadbed along the cross section direction of the roadbed; and the composite geomembrane of the foundation composite drain prevention board laid between the lower embankment filled soil and the foundation soil is upward and the water filtering geotextile is downward. The utility model has a simple structure, reduces roadbed dampness, improves integral rigidity of the roadbed, reduces road damage in seasonally frozen ground area, and has remarkable road damage prevention effect in seasonally frozen ground area and popularization perspective.
Description
Technical field
The utility model relates to a kind of technical field of road structure, relates in particular to a kind of road structure of preventing and treating the seasonal frost region road disease.This road structure utilizes the hydraulic connection of compound anti-band drain blocking-up ground and roadbed, cuts off the rising passway that freezes water in the freezing process, reduces frost-heaving deformation; Melt the phase in the spring, utilize to be laid in maximum and to freeze the compound anti-band drain of the high hydraulic conductivity in depths and get rid of maximum fast and effectively and freeze the moisture that the depths is gathered, thereby guaranteed the moisture condition of roadbed; Full section is laid the integral rigidity that solid geogrid increases roadbed at the roadbed top on the other hand, controls seasonal frost region roadbed frost heave, thaw collapse distortion effectively, coordinates inhomogeneous deformation.
Technical background
China's seasonal frozen ground area distributions is very extensive, accounts for 53.5% of area.The seasonal frost region roadbed produces the distortion of frost heave thaw collapse under unfreezing, unfreezing causes the road surface to be destroyed too early, produces longitudinal crack, and the ice and snow melt water makes freeze injury deepen along oozing under the crack, causes road frost boiling, emits mud.The most important reason of frozen soil local highway roadbed freeze-thaw damage is the moisture condition that water translocation has changed subgrade soils in the frozen-thaw process.In the seasonal frozen ground district, winter, the subgrade soils temperature was reduced to below the zero degrees celsius, and a part of aqueous water freezes to become ice in the subgrade soils, and soil does not freeze water and reduces, and matric potential reduces.Under the effect of soil matrix potential gradient, roadbed not freezing zone moisture constantly moves to freezing the sharp side, sharp side annex change of moisture content is violent, it is lower particularly to work as the roadbed height, when groundwater level depth is more shallow, total moisture content can have a more substantial increase in the roadbed body, freezes the place, sharp side and ice sheet may occur; Spring is melted the phase, and the water of ice-out can not be finished by gravity gradient effect migration at short notice, and roadbed humidity increases like this, particularly freezes the depths in maximum, and hypersaturated state may appear in the soil body, thereby causes the bigger thaw collapse of roadbed to destroy and road frost boiling.
China's speedway is in the flourish stage, and the district's highway construction of length and breadth of land seasonal frozen ground also is like a raging fire, control roadbed filling, reinforced platoon's drainage facility is arranged, set up sand cushion etc. in order to reduce The Frost Hazard of Road engineering measure commonly used.But because the complexity and the construction reason of seasonal frozen ground, the seasonal frost region road disease is still based on freeze injury.
In order to reduce the harm of frost action to the seasonal frost region road, must effectively block this external moisture of roadbed and in roadbed, move, can accelerate the roadbed maximum in the phase of melting in spring simultaneously and freeze the infiltration rate that moisture is gathered in the depths, effectively control the humidity conditions of roadbed.Simultaneously, subgrade soils produces uneven frost heave and thaw collapse under unfreezing, make road structure produce and destroy, and aggravation roadbed humidity conditions worsens, therefore must take measures to improve the rigidity that roadbed is particularly gone up roadbed, reduce the inhomogeneous deformation of roadbed under unfreezing.
Summary of the invention
The purpose of this utility model is to be to provide a kind of road structure of preventing and treating the seasonal frost region road disease, and this roadbed well improves the moisture condition of seasonal frost region roadbed, improves subgrade stiffness, reduces the inhomogeneous deformation of frost heave thaw collapse, effectively reduces The Frost Hazard of Road.When winter, roadbed freezed, underground water cut off and to freeze the water roadbed migration that makes progress in the roadbed body the supply of roadbed in the time of can effectively stoping roadbed to freeze; Can pass through high hydraulic conductivity band drain in the phase of melting in spring, increase the subgrade soils transversal permeability, in time get rid of, reduce the particularly maximum water content of freezing the depths soil body of subgrade soils because congelation is enriched in the water of compound anti-band drain lower floor.The solid geogrid of the full section laying in roadbed top has simultaneously increased the roadbed integral rigidity, controls seasonal frost region roadbed frost heave, thaw collapse distortion effectively, coordinates inhomogeneous deformation.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of road structure of preventing and treating the seasonal frost region road disease, this road structure is by lay the compound anti-band drain of substrate on foundation soil, embankment filled soil, maximum is frozen the compound anti-band drain in depths, embankment filled soil, roadbed top perspective geo-grid constitutes, it is characterized in that: during roadbed filling in foundation soil original ground roadbed bottom width scope full section lay the compound anti-band drain of one deck, embankment filled soil to road maximum is frozen dark absolute altitude under filling on compound anti-band drain, lay maximum along the full section of roadbed once more and freeze the compound anti-band drain in depths, continue to fill and set out on a journey levee foundation soil to designing the embankment absolute altitude, the full section of roadbed end face is laid solid geogrid on roadbed, freeze depths full section laying maximum in the road maximum and freeze the compound anti-band drain in depths, the full section of embankment bottom original ground is laid compound anti-band drain, compound anti-band drain, maximum is frozen the compound anti-band drain in depths by composite geo-membrane, the three-dimensional earthwork core, the drainage geotextiles is formed.
The compound anti-band drain of described substrate, maximum are frozen the compound anti-band drain in depths and all are made up of composite geo-membrane, three-dimensional earthwork core, drainage geotextiles, the geosynthetics that horizontal high hydraulic conductivity, normal direction low-permeability are arranged, even this material also can keep laterally having very high drainage performance under very high load, the drainage geotextiles but has normal direction water proof function preferably.
The composite geo-membrane of the compound anti-band drain of laying between described embankment filled soil down and the foundation soil of substrate makes progress, and the drainage geotextiles is downward.
The drainage geotextiles that the maximum of laying between described embankment filled soil down and the following embankment filled soil is frozen dark compound anti-band drain makes progress, and composite geo-membrane is downward, and compound anti-band drain is herringbone to be laid on the embankment road camber, and the crown slope ratio of slope is 4%.
Described this compound anti-band drain is embedded in seasonal frost region road maximum and freezes deep-seated and put, and maximum Road Freezing is spent H deeply
fObtain by local weather monitoring, can calculate with theoretical formula during no meteorological record.
The composite geo-membrane of the compound anti-band drain of laying between described foundation soil and the following embankment filled soil of substrate makes progress, and the drainage geotextiles is downward.
Described solid geogrid is made up of vertical cross rib band, and vertical cross rib band is narrower, and node has higher holding strength, and the complex that the solid geogrid and the soil body are formed has bigger integral rigidity, can reduce the differential frost heave thaw collapse distortion of roadbed.
Lay the compound anti-band drain of one deck on the natural ground of compacting, the compound anti-band drain composite geo-membrane one side of this layer should be up; Freeze dark absolute altitude according to codes and standards are filling roadbed to calculating maximum on compound anti-band drain, and guarantee that roadbed horizontal wall inscription ratio of slope is 3%～4%, lay maximum and freeze the compound anti-band drain in depths, the compound anti-band drain composite geo-membrane one side of this layer should be down; Railway embankment using is laid solid geogrid at the roadbed end face to design elevation.
Compound anti-band drain is the novel anti-adrainage material of collection draining, water-proof function and one, its structure is formed: a drainage geotextiles, middle three-dimensional earthwork core, another side drainage geotextiles has characteristics such as high porosity, horizontal high hydraulic conductivity, normal direction low-permeability.Middle three-dimensional earthwork core, the rib rigidity is big, vertically arranges, and forms drainage channel, and the rib of cross arrangement forms to support and prevents that the drainage geotextiles from embedding drainage channel up and down.Even under very high load, also can keep very high drainage performance like this.The drainage geotextiles of another side but has water proof function preferably.
Solid geogrid is a kind of cross rib band and the graded crossing of longitudinal rib band, and vertical cross rib band is narrower, the node cylinder have very high support strong geo-grid.Solid geogrid can effectively improve the soil body and the muscle interband interacts, and forms the three-dimensional grid-soil body complex with higher integral rigidity.
The operating principle of the novel road structure of this control seasonal frost region road disease is: winter temperature reduces, subgrade soils is freezed from top to bottom, ground reaches to freezing upwards migration of Free water in the subgrade soils down about temperature gradient and vacuum draw, the moisture that the composite geo-membrane of the compound anti-band drain of substrate can cut off in the ground effectively moves in embankment, the composite geo-membrane that maximum is frozen the compound anti-band drain in depths can stop the moisture in the embankment down to make progress to move in the roadbed effectively, and the total moisture content (liquid-water content+ice content) that whole embankment is particularly gone up roadbed in freezing process is effectively controlled like this; Numerous known, because moisture is in a large number to freezing the sharp side migration when freezing winter, feasible maximum is frozen the depths spring and is melted phase water content maximum, under burden pressure effect and the high hydraulic conductivity synergy of three-dimensional geotechnological core net horizontal direction, last roadbed moisture is to the migration of the geotechnological core net of three-dimensional and get rid of the embankment body, has further reduced the humidity that roadbed is particularly gone up roadbed; On the other hand, the solid geogrid that the full section in roadbed top is laid has increased the roadbed integral rigidity, controls seasonal frost region roadbed frost heave, thaw collapse distortion effectively, coordinates inhomogeneous deformation.The present invention just can actively initiatively intercept extraneous moisture and enter the embankment body, in time gets rid of embankment moisture, improves subgrade stiffness and reduces the freeze thawing differential deformation.
The beneficial effect of advantage of the present utility model and generation:
1, this novel road structure of preventing and treating The Frost Hazard of Road, fully also rationally utilize the composite geo-membrane water-resisting property of compound anti-band drain, the high transmissibility of three-dimensional geotechnological core net, moisture enters the embankment body in blocking-up ground and the road structure, utilize roadbed deadweight to get rid of to be enriched in maximum to freeze the spring of depths and melt aqueous water, reduce embankment and particularly gone up roadbed soil body humidity, thereby improved the seasonal frost region roadbed freezing tolerance, improved subgrade strength, reduce the seasonal frost region The Frost Hazard of Road, solved the specific question of seasonal frost region roadbed.
2, this road structure not only can block that moisture moves in the ground in embankment, and can equally not make the moisture that migrates to geomembrane in time not get rid of to traditional geomembrane, and enrichment below geomembrane causes subgrade defect.
3, this novel road structure of preventing and treating The Frost Hazard of Road has made full use of solid geogrid raising roadbed integral rigidity characteristic, the raising of roadbed integral rigidity, can reduce frost heave, thaw collapse differential deformation effectively, reduce unfreezing road pavement structural damage effect, effectively prevent and treat The Frost Hazard of Road.
4, road structure of the present utility model is simple, main material is satisfactory roadbed filling and compound anti-band drain, solid geogrid, reduce roadbed humidity, improved the roadbed integral rigidity, control seasonal frost region road disease effect is obvious, easy construction has application prospect preferably.
Description of drawings
Fig. 1 is a kind of road structure cross-sectional configuration schematic diagram of preventing and treating the seasonal frost region road disease
Fig. 2 is the enlarged diagram of local A among a kind of Fig. 1
Fig. 3 is the enlarged diagram of local B among a kind of Fig. 1
Fig. 4 is a kind of solid geogrid enlarged diagram of Fig. 1 Local C
Fig. 5 is a subgrade moisture migration schematic diagram in the freezing process in a kind of winter
Fig. 6 melts phase subgrade moisture migration schematic diagram for a kind of spring
Fig. 7 is a kind of Chinese seasonal frozen ground standard frost penetration line schematic diagram
Position and pairing mark among the figure: upward embankment filled soil 1, following embankment filled soil 2, foundation soil 3, gutter 4, curb 5, the compound anti-band drain 7 of substrate (Lampson LPS-1600), composite geo-membrane 7a, three-dimensional earthwork core 7b, drainage geotextiles 7c, maximum are frozen the compound anti-band drain 8 in depths, roadbed top perspective geo-grid 9, road surface structare layer 10, are freezed the signal of water migration path
Spring is melted phase water migration path signal
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
According to Fig. 1 as can be known, a kind of road structure of preventing and treating the seasonal frost region road disease, this road structure is by lay the compound anti-band drain 7 of substrate on foundation soil 3, embankment filled soil 2, maximum is frozen the compound anti-band drain 8 in depths, last embankment filled soil 1, roadbed top perspective geo-grid 9 constitutes, during roadbed filling in foundation soil 3 original ground roadbed bottom width scopes full section lay the compound anti-band drain 7 of one deck, embankment filled soil 2 to road maximum is frozen dark absolute altitude under filling on compound anti-band drain, lay maximum along the full section of roadbed once more and freeze the compound anti-band drain 8 in depths, continue to fill embankment subgrade soils 1 to design embankment absolute altitude, the full section of roadbed end face is laid solid geogrid 9 on roadbed.Freeze the full section of depths, embankment bottom original ground in the road maximum and lay compound anti-band drain 7, lay solid geogrid 9 along the subgrade cross section direction at the roadbed end face.The compound anti-band drain 7 of described substrate, maximum are frozen the compound anti-band drain 8 in depths and all are made up of composite geo-membrane 7a, three-dimensional earthwork core 7b, drainage geotextiles 7c, the geosynthetics that horizontal high hydraulic conductivity, normal direction low-permeability are arranged, even this material also can keep laterally having very high drainage performance under very high load, the drainage geotextiles but has normal direction water proof function preferably.
The composite geo-membrane 7a of the compound anti-band drain of laying between described embankment filled soil 2 down and the foundation soil 37 of substrate makes progress, and 7c is downward for the drainage geotextiles.
The drainage geotextiles 7c that the maximum of laying between described embankment filled soil 2 down and the embankment filled soil 1 is frozen dark compound anti-band drain 8 makes progress, and composite geo-membrane 7a is downward, and compound anti-band drain 7 is herringbone to be laid on the embankment road camber, and the crown slope ratio of slope is 4%.
The composite geo-membrane 7a of described compound anti-band drain 7 up, three-dimensional earthwork core 7b is down.
Described this compound anti-band drain is embedded in seasonal frost region road maximum and freezes deep-seated and put, and maximum Road Freezing is spent H deeply
fObtain by local weather monitoring, can calculate by the empirical formula formula during no meteorological record:
H
f＝abcZ
d
H in the formula
f-maximum is frozen (m) deeply for many years;
Z
d-the earth standard frost penetration (m); If no field data can be looked into " highway subgrade design manual " " Chinese seasonal frozen ground standard frost penetration line chart ";
The hot rerum natura coefficient of a-road surface roadbed material sees Table 1;
B-roadbed humidity coefficient sees Table 2;
C-roadbed section form coefficient sees Table 3.
The hot rerum natura coefficient of table 1 road surface roadbed material a
| Roadbed material | Clay soil | Slity soil | Silty sand | Particulate soil property gravel clayey sand | Contain particulate soil property gravel (sand) |
| Hot rerum natura coefficient | 1.05? | 1.1? | 1.2? | 1.3? | 1.35? |
| Ground surface material | Cement and concrete pavement | Bituminous concrete | Two-ash broken stones and cement broken (gravel) stone | Two-ash soil and cement-soil | Graded broken stone |
| Hot rerum natura coefficient | 1.4? | 1.35? | 1.4? | 1.35? | 1.45? |
Table 2 roadbed humidity coefficient b
| Do wet type | Dry | In wet | Moist | Cross wet |
| Humidity coefficient | 1.0? | 0.95? | 0.90? | 0.80? |
Table 3 roadbed section form coefficient c
| Fill out the form of digging | Ground | Fill out 2m | Fill out 4m | Dig 2m | Dig 4m | Dig 6m | Dig more than the 6m |
| The form of fracture coefficient | 1.0? | 1.02? | 1.05? | 0.98? | 0.95? | 0.92? | 0.90? |
Described solid geogrid is made up of vertical cross rib band, and vertical cross rib band is narrower, and node has higher holding strength, and the complex that the solid geogrid and the soil body are formed has bigger integral rigidity, can reduce the differential frost heave thaw collapse distortion of roadbed.A, B are partial enlarged drawings in the accompanying drawing, in roadbed both sides foundation soil 3 gutter 4 are set, and form complete unobstructed drainage system, guarantee subgrade stability.Described embankment filled soil 1 end face of going up is built road surface structare layer 10 and curb 5, and curb 5 is positioned at road surface structare layer 10 both sides.
According to Fig. 5 as can be known, a kind of road structure of preventing and treating the seasonal frost region road disease is in the winter time in the freezing process, foundation soil 3, down embankment filled soil 2, go up the migration that under the driving of temperature gradient and freezing force, all make progress of moisture in the embankment filled soil 1, freeze the water migration path and illustrate
For freezing the water migration path in the foundation soil 3, freezing the signal of water migration path
For freezing the signal of water migration path in the embankment filled soil 2 down
For freezing the water migration path in the last embankment filled soil 1, freeze the signal of water migration path
Freeze the signal of water migration path
Frozen the compound anti-band drain 8 in depths by the compound anti-band drain 7 of substrate, maximum respectively and cut off, thus stop freeze water enter embankment reduce on the moisture condition of embankment.
According to Fig. 6 as can be known, a kind of novel road structure of preventing and treating the seasonal frost region road disease melted in the process in the spring, and last embankment filled soil 1 is progressively melted by frozen state, and the spring melt water divides migration downwards under action of gravity in the last embankment filled soil 1, and the spring is melted phase water migration path signal
For spring melt water in the last embankment filled soil 1 divides migration path, the spring melt water of migration freezes the compound anti-band drain 8 eliminating road structures in depths along the maximum of horizontal high hydraulic conductivity downwards.
For improving embankment stability and preventing rain drop erosion, roadbed side slope increases safeguard procedures according to actual conditions.Roadbed substrate 3 should meet the requirement of " highway subgrade design specifications " relevant provision.
A, B enlarged diagram are respectively Fig. 2 and Fig. 3 among Fig. 1
The compound anti-band drain 7 of substrate among Fig. 1, maximum are frozen the compound anti-band drain 8 in depths and are composite geo-membrane 7a, the three-dimensional earthwork core 7b shown in Fig. 2, Fig. 3, drainage geotextiles 7c composition.Composite geo-membrane 7a has good impermeable role, can resistance to hydrostatic pressure power greater than 100kPa; Three-dimensional earthwork core 7b has high pressure resistant, the big characteristics of hydraulic conductivity, and effective hydraulic conductivity is not less than 1.2 * 10 under long-term high pressure load (3000kPa) effect
-3m
2/ s, three-dimensional earthwork core thickness is not less than 8mm, and drainability is equivalent to one meter thick sand gravel draining; Drainage geotextiles 7c mass area ratio is not less than 200g/m
2, can stop ground to invade the three-dimensional earthwork core, keep the draining of composite water draining board 7 long-term stabilities.
The compound anti-band drain 7 of substrate is enlarged into Fig. 2 among Fig. 1, the composite geo-membrane 7a that the compound anti-band drain 7 of substrate has a water proof ability up, three-dimensional earthwork core 7b down, its effect is: the seasonal frost region roadbed is when temperature reduces in the winter time, freeze water (comprising that freezable liquid water and gaseous state freeze water) under the temperature gradient effect from foundation soil 3 to the migration of the lower embankment direction of temperature, migration path as
Shown in, composite geo-membrane 7a can effectively cut off the water translocation passage, stops subgrade soils 3 moisture to enter embankment; The moisture that moves by making progress in the ground gathers under composite geo-membrane 7a and gets rid of roadbed by high hydraulic conductivity three-dimensional earthwork core infiltration.
Maximum is frozen the compound anti-band drain 8 in depths and is enlarged into Fig. 3 among Fig. 1, freezes dark H in the road maximum
fThe place is provided with the herringbone weathering, and the open roof ratio of slope is 4%, and adrainage material is compound anti-band drain 7, composite geo-membrane 7a down, three-dimensional earthwork core 7b up, its effect is: in the subgrade soils freezing process, composite geo-membrane can effectively stop down embankment moisture to make progress to move in embankment and the roadbed; Show according to a large amount of indoor multigelation cyclic tests and seasonal frost region roadbed humidity detection result, melt the phase in the spring and be Free water because place's vacuum draw effect of freeze thawing sharp side and frozen soil ice crystal melt, making moisture freeze the depths in maximum gathers, the roadbed maximum is frozen depths moisture content maximum, often is saturation state or even hypersaturated state.Under roadbed deadweight and car load, maximum freeze the deep water branch gather the band moisture can freeze the timely and effective eliminating of three-dimensional earthwork core 7b that depths herringbone maximum is frozen the compound anti-band drain 8 in depths from maximum, the maximum saturated zone soil matrix that melts passes through discharging consolidation, the humidity of embankment and roadbed in the reduction improves intensity index.
Roadbed top perspective geo-grid 9 is enlarged into Fig. 5 among Fig. 1, full section is laid solid geogrid 9 at the roadbed top, its effect is: solid geogrid and subgrade soils form three-dimensional grid-soil body complex, increase substantially the integral rigidity of embankment, increase roadbed opposing frost heave, thaw collapse deformability, coordinate because the inhomogeneous deformation that unfreezing and traffic load are produced, thereby prevent and treat the seasonal frost region subgrade defect effectively.Solid geogrid tensile strength is not less than 50KN/m, and elongation per unit length is not more than 10%, and node intensity is not less than 1200N, and rib band breaking strength is not less than 10KN.
In sum, the utility model by the compound anti-band drain 7 of substrate is set, maximum is frozen compound anti-band drain 8 in depths and roadbed top perspective geo-grid 9, can make that freezing period cuts off underground water and enters embankment, stops down embankment moisture upwards to move in embankment and the roadbed under congelation the seasonal frost region embankment in the winter time; Can maximum be frozen dark H by the solid netted three-dimensional earthwork core of high transmissibility when melting the phase in the spring
fThe timely and effective eliminating embankment of moisture that place, roadbed end face, substrate are gathered is by changing the key element of " water " in seasonal frost region roadbed " soil, water, the temperature " three elements; Solid geogrid improves the embankment integral rigidity on the other hand, reduces inhomogeneous deformation, improves the road surface stress condition, thereby effectively prevents and treats the seasonal frost region subgrade defect.Fig. 5, Fig. 6 have described the key element of the utility model change seasonal frost region roadbed " water " in detail and roadbed is anti-, drainage procedure.
Claims (5)
1. road structure of preventing and treating the seasonal frost region road disease, this road structure is by foundation soil (3), compound anti-band drain (7), following embankment filled soil (2), maximum is frozen the compound anti-band drain in depths (8), last embankment filled soil (1), roadbed top perspective geo-grid (9) constitutes, it is characterized in that: during roadbed filling in foundation soil (3) original ground roadbed bottom width scope full section lay the compound anti-band drain of one deck (7), embankment filled soil (2) to road maximum is frozen dark absolute altitude under filling on compound anti-band drain (7), lay maximum along the full section of roadbed once more and freeze the compound anti-band drain in depths (8), continue to fill and set out on a journey levee foundation soil (1) to designing the embankment absolute altitude, the full section of roadbed end face is laid solid geogrid (9) on roadbed, freeze depths full section laying maximum in the road maximum and freeze the compound anti-band drain in depths (8), the full section of embankment bottom original ground is laid compound anti-band drain (7), compound anti-band drain (7), maximum is frozen the compound anti-band drain in depths (8) by composite geo-membrane (7a), three-dimensional earthwork core (7b), drainage geotextiles (7c) is formed.
2. a kind of road structure of preventing and treating the seasonal frost region road disease according to claim 1, it is characterized in that: the drainage geotextiles (7c) that the maximum of laying between described embankment filled soil (2) down and the embankment filled soil (1) is frozen dark compound anti-band drain (8) makes progress, and composite geo-membrane (7a) is downward.
3. a kind of road structure of preventing and treating the seasonal frost region road disease according to claim 1 is characterized in that: described compound anti-band drain (7) is embedded in seasonal frost region road maximum and freezes deep-seated and put, and maximum Road Freezing is spent (H deeply
f).
4. a kind of road structure of preventing and treating the seasonal frost region road disease according to claim 1 is characterized in that: described compound anti-band drain (7) is herringbone and lays on the embankment road camber.
5. a kind of road structure of preventing and treating the seasonal frost region road disease according to claim 1, it is characterized in that: the composite geo-membrane (7a) of the compound anti-band drain of laying between described foundation soil (3) and the following embankment filled soil (2) of substrate (7) makes progress, and drainage geotextiles (7c) is downward.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101956355A (en) * | 2010-06-25 | 2011-01-26 | 中交第二公路勘察设计研究院有限公司 | Subgrade structure for preventing and controlling road damage in seasonal frozen regions |
| CN103882834A (en) * | 2014-03-03 | 2014-06-25 | 辽宁电力勘测设计院 | Ash dam upstream fitting-slope seepage draining structure |
| CN105887605A (en) * | 2016-05-06 | 2016-08-24 | 兰州交通大学 | Roadbed frost heaving and thaw settlement resistant device based on stress relieving method |
| CN109024487A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of guard system and its construction method that cold area's reservoir stability antiseepage is freeze proof |
| CN109024486A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of Han Qu paddles the freeze proof protection against erosion safeguard structure of side slope and its construction method |
| CN111411553A (en) * | 2020-03-30 | 2020-07-14 | 山东交通学院 | Composite soft soil roadbed structure and construction method |
| CN113832793A (en) * | 2021-09-28 | 2021-12-24 | 北京师范大学 | Roadbed freezing and thawing prevention and control method and structure |
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- 2010-06-25 CN CN201020246220XU patent/CN201738208U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956355A (en) * | 2010-06-25 | 2011-01-26 | 中交第二公路勘察设计研究院有限公司 | Subgrade structure for preventing and controlling road damage in seasonal frozen regions |
| CN101956355B (en) * | 2010-06-25 | 2012-02-29 | 中交第二公路勘察设计研究院有限公司 | Subgrade structure for preventing and controlling road damage in seasonal frozen regions |
| CN103882834A (en) * | 2014-03-03 | 2014-06-25 | 辽宁电力勘测设计院 | Ash dam upstream fitting-slope seepage draining structure |
| CN105887605A (en) * | 2016-05-06 | 2016-08-24 | 兰州交通大学 | Roadbed frost heaving and thaw settlement resistant device based on stress relieving method |
| CN109024487A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of guard system and its construction method that cold area's reservoir stability antiseepage is freeze proof |
| CN109024486A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of Han Qu paddles the freeze proof protection against erosion safeguard structure of side slope and its construction method |
| CN111411553A (en) * | 2020-03-30 | 2020-07-14 | 山东交通学院 | Composite soft soil roadbed structure and construction method |
| CN113832793A (en) * | 2021-09-28 | 2021-12-24 | 北京师范大学 | Roadbed freezing and thawing prevention and control method and structure |
| CN113832793B (en) * | 2021-09-28 | 2022-10-21 | 北京师范大学 | Roadbed freezing and thawing prevention and control method and structure |
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