CN109736141A - The anti-freeze expansion structural body and paving method of Railway Roadbed in Permafrost Regions - Google Patents
The anti-freeze expansion structural body and paving method of Railway Roadbed in Permafrost Regions Download PDFInfo
- Publication number
- CN109736141A CN109736141A CN201910088086.0A CN201910088086A CN109736141A CN 109736141 A CN109736141 A CN 109736141A CN 201910088086 A CN201910088086 A CN 201910088086A CN 109736141 A CN109736141 A CN 109736141A
- Authority
- CN
- China
- Prior art keywords
- layer
- roadbed
- water seepage
- subgrade
- structural body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 108010053481 Antifreeze Proteins Proteins 0.000 title claims abstract description 27
- 230000002528 anti-freeze Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000010410 layer Substances 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 239000004576 sand Substances 0.000 claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 18
- 239000004746 geotextile Substances 0.000 claims abstract description 16
- 239000002344 surface layer Substances 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims description 40
- 239000004575 stone Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000008595 infiltration Effects 0.000 claims description 9
- 238000001764 infiltration Methods 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 201000010099 disease Diseases 0.000 abstract description 8
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 4
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 239000002352 surface water Substances 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009746 freeze damage Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 235000004047 Amorpha fruticosa Nutrition 0.000 description 1
- 240000002066 Amorpha fruticosa Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
The invention discloses the anti-freeze expansion structural bodies and paving method of a kind of Railway Roadbed in Permafrost Regions, wherein anti-freeze expansion structural body, including roadbed and it is located at the side slope of embankment of roadbed two sides, roadbed has been sequentially filled 5% cement stabilized graded macabam layer from surface layer of subgrade bed to bottom layer of subgrade, medium-sand seam, folder is layered on one layer of waterproof geotextiles between medium-sand seam, non-frost heave A, B group soil layer；Bottom layer of subgrade two sides are equipped with water seepage mechanism, are equipped with soakaway trench in each water seepage mechanism.Using paving method of the invention, the anti-freeze expansion structural body of making, the lower row of envelope in realization, surface layer of subgrade bed is taken change filling out containing 5% cement stabilized graded macabam, it blocks surface water to penetrate into from surface layer of subgrade bed, while the water seepage mechanism that bottom layer of subgrade two sides are added, strengthens subgrade bed drainability.Therefore water source is effectively deflected from roadbed by the present invention, guarantees that subgrade in permafrost soil zone and cutting by ground, the erosion of underground water, do not effectively prevent the generation of permafrost area embankment frost heave, thaw collapse disease.
Description
Technical field
The present invention relates to Construction Technique of Railway Subgrade field more particularly to a kind of anti-freeze expansions of Railway Roadbed in Permafrost Regions
Structural body and paving method.
Background technique
With the fast development of railway construction in China cause, railway projects Xiang Gaowei, high and cold technological difficulties successively in recent years
Area extension.Occur again and again in bad subgrades diseases such as high and cold Permafrost Area railway construction frost heave, thaw collapses.Roadbed frost damage produces
Raw reason is mainly subgrade drainage in winter by low temperature effect, and the higher water of temperature is shifted to the lower soil layer direction of temperature,
Under the effect of temperature difference polywater, moisture is assembled rapidly and gradually forms poly- ice sheet.Therefore how row is taken in this area's newly built railway
Effective prevention frost failure measure and occur frost failure when how this is handled, be the technology of extremely frigid zones construction of railways
Problem.
In to build Xinjiang to build the good railway in Kazakhstan that work (group) Co., Ltd undertakes the construction of be first railway that group company builds, item
Mesh is located in the domestic forestry reserve in motherland, Harbin, Heilongjiang Province Fangzheng County, northeast, and most time is in frozen soil in 1 year
Season.For the generation for preventing roadbed frost damage disease, it is usually taken and selects suitable roadbed filling, reinforced platoon when roadbed substrate is changed and filled out
Drainage facility and addition geotextile constitute the modes such as reinforced earth to prevent and treat；Although these measures are to ensure that subgrade stability is effectively anti-
The generation for controlling freeze injury plays good effect, but because construction site is located in forest zone, lithic drainage is abundant, inevitably can also be because of underground
River system change causes roadbed frost damage.
Summary of the invention
In view of the above deficiencies, the technical problems to be solved by the present invention are: providing a kind of Railway Roadbed in Permafrost Regions
Anti-freeze expansion structural body and paving method solve surface layer of subgrade bed and seep roadbed and subgrade bed water content problems of too under water, from root
The generation of frost heave and thaw collapse disease is prevented in sheet.
In order to solve the above technical problems, the technical scheme is that
A kind of anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions including roadbed and is located at the embankment sides of the roadbed two sides
Slope, the roadbed have been sequentially filled 5% cement stabilized graded macabam layer, medium-sand seam from surface layer of subgrade bed to bottom layer of subgrade, and folder is layered on described
One layer of waterproof geotextiles between medium-sand seam, non-frost heave A, B group soil layer；It is blind that the bottom layer of subgrade two sides are equipped with infiltration
Ditch is equipped with soakaway trench in each water seepage mechanism.
Preferred embodiment is that the side slope of embankment is equipped with the infiltration blind pipe for draining.
Preferred embodiment is that the 5% cement stabilized graded macabam layer is with a thickness of 0.4~0.7m；The medium-sand seam with a thickness of
0.2m；The waterproof geotextiles are according to 600g/m2Standard is laid with；And/or non-frost heave A, the B group soil thickness is
1.7~2.3m.
Preferred embodiment is 1.2~1.6m of french drain bottom width of the water seepage mechanism；Water seepage mechanism depth changes lower than roadbed and fills out bottom
Face is not less than 0.5m；The top of the water seepage mechanism to lateral sulcus platform spreads between thoroughly and is laid with one layer of heat preservation plate, the insulation board
With a thickness of 0.1m, the insulation board is arranged with blotter.
Preferred embodiment is that water seepage mechanism downline road is longitudinally positioned more mouthfuls of spaced inspection shafts, respectively
The inspection shaft is precast assembly structure.
Preferred embodiment is that headwall is arranged in the water outlet of the water seepage mechanism, and heat preservation outlet, institute are provided on the headwall
It states heat preservation outlet surrounding side slope and carries out protective treatment.
The paving method of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions, comprising the following steps:
Step 1: obtaining the geology and water system in construction area；
Step 2: the roadbed in the construction area successively changes from bottom to up fills out non-frost heave A, B group soil, medium coarse sand and 5% cement grade
With rubble, and waterproof geotextiles are laid in the medium coarse sand；
Step 3: being laid with water seepage mechanism in bottom layer of subgrade two sides, soakaway trench is equipped in each water seepage mechanism.
Preferred embodiment is, in the step 3, be laid with the specific method of water seepage mechanism the following steps are included:
S1, digging groove carry out geology and water system survey to the water seepage mechanism present position before construction, keep the infiltration blind
Ditch and top drainage system coordination；
S2, bottom of trench foundation construction, before filling concrete, groove is cleaned out, and filling concrete is carried out by expansion joint zonal cooling,
Each segmentation inner concrete should have been filled once, if interrupting for some reason, should stay construction joint by code requirement；
S3, installation soakaway trench calculate tube coupling joint location, dig working pit, depth in interface before the soakaway trench installation
Not less than 20 ㎝；It being connected using spigot-and-socket flexible joint, when installation, should be such that tube coupling bellmouth meets to current direction, after hose is in place,
Tube coupling center, elevation should be gradually adjusted to design position, and suitably add native stone cushion block or sandstone to fix in tube coupling two sides；It is described
The multiple permeable holes of interlaced arrangement on the tube wall of soakaway trench, each permeable pitch of holes are not more than 200mm；
S4, trench backfill, after the soakaway trench installation is in place, the pipe shaft two sides of soakaway trench symmetrically backfill graded broken stone, and are layered
Compacting；When trench top backfills fine rock material, tamped from high to low to the placement in layers simultaneously of pipe shaft two sides by substrate drainage direction；
Confining bed is arranged at the top of the ditch of the water seepage mechanism in S5, confining bed construction, using grouting or dry-laid rubble is built, or soil
Work synthesis impervious material is paved into, and rams fill out the clay waterproof layer that thickness is not less than 0.5m on it；There is gutter that can not set on french drain
Confining bed.
Preferred embodiment be further include step S6, loaded filter construction, the confining bed lower section be arranged loaded filter, it is described
Loaded filter selects broken, the gravel placement in layers of even particle size, and adjacent layer particle diameter ratio is not less than 1:4, and thickness is not less than
15 cm, the sand less than 0.15mm partial size should be less than 5%, and bottom of trench longitudinal slope should be greater than 1%.
Preferred embodiment is the 5% cement stabilized graded macabam medium stone, it is desirable that gill shape stone contents should not exceed in particle
20%, matter is soft, breakable stone contents are no more than 10%, and paste and content of organics are no more than 2%, and nonuniformity coefficient U=
D60/D10 is not less than 15, and 0.02mm or less granular mass percentage is not more than 3%.
After adopting the above technical scheme, the beneficial effects of the present invention are:
Due to the anti-freeze expansion structural body and paving method of Railway Roadbed in Permafrost Regions of the invention, wherein anti-freeze expansion structural body,
Including roadbed and it is located at the side slope of embankment of roadbed two sides, roadbed has been sequentially filled 5% cement grade from surface layer of subgrade bed to bottom layer of subgrade
With metalling, medium-sand seam, folder is layered on one layer of waterproof geotextiles between medium-sand seam, non-frost heave A, B group soil layer；Bedding bottom
Layer two sides are equipped with water seepage mechanism, are equipped with soakaway trench in each water seepage mechanism.Using paving method of the invention, making is prevented
Frost heave structural body is realized and is arranged under envelope.Surface layer of subgrade bed is taken change filling out containing 5% cement stabilized graded macabam, blocks surface water from base
Bed surface layer is penetrated into, while the water seepage mechanism that bottom layer of subgrade two sides are added, and strengthens subgrade bed drainability.As it can be seen that of the invention
Water source is effectively deflected from into roadbed, guarantees that subgrade in permafrost soil zone and cutting by ground, the erosion of underground water, do not effectively prevent for many years
The generation of Frozen Ground Area roadbed frost damage, thaw collapse disease.
Since side slope of embankment is equipped with the infiltration blind pipe for draining；Further increase drainability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions of the present invention；
Fig. 2 is the sectional view of sewer in the present invention；
Fig. 3 is the position view of inspection shaft in the present invention；
Fig. 4 is the structural schematic diagram that headwall exports in the present invention；
Fig. 5 is the half plan of headwall water outlet in the present invention；
Fig. 6 is the enlarged cross-sectional view in the direction A-A in Fig. 5；
In figure: 1- cement stabilized graded macabam layer, 2- medium-sand seam, the waterproof geotextiles of 3-, non-frost heave A, the B group soil layer of 4-, the side 5-
Ditch, 6- water seepage mechanism, 7- soakaway trench, 8- blotter, 9- insulation board, 10- lateral sulcus platform, 12- inspection shaft, 120- well lid,
121- well bore, 122- well basis, 13- headwall.
Specific embodiment
Understand to remove the objectives, technical solutions, and advantages of the present invention more, it is with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one:
As Fig. 1 to Fig. 5 jointly shown in, a kind of anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions, including roadbed and be located at
The side slope of embankment of roadbed two sides, roadbed have been sequentially filled 5% cement stabilized graded macabam layer 1, medium coarse sand from surface layer of subgrade bed to bottom layer of subgrade
Layer 2, folder are layered on one layer of two waterproof geotextiles 3 of one film of cloth between medium-sand seam 2, non-frost heave A, B group soil layer 4；Bottom layer of subgrade
Two sides are equipped with water seepage mechanism 6, are equipped with soakaway trench 7 in each water seepage mechanism 6, are arranged specifically under 5 side platform of lateral sulcus and seep
Water french drain 6, water seepage mechanism tube bottom elevation are not more than -1.3 times of maximum frozen depths of 10 elevation of lateral sulcus platform-caliber -0.25m.
Side slope of embankment is equipped with the infiltration blind pipe for draining.
5% cement stabilized graded macabam layer 1 is with a thickness of 0.4~0.7m；Medium-sand seam 2 is with a thickness of 0.2m；Waterproof geotextiles 3 are pressed
According to 600g/m2Standard is laid with；And/or non-frost heave A, B group soil layer 4 is with a thickness of 1.7~2.3m.
1.2~1.6m of french drain bottom width of water seepage mechanism 6；6 depth of water seepage mechanism is changed lower than roadbed fills out bottom surface not less than 0.5m；
The top of water seepage mechanism to lateral sulcus platform 10 spreads between thoroughly and is laid with one layer of heat preservation plate 9, and insulation board 9 is with a thickness of 0.1m, insulation board 9
It is arranged with blotter.
As shown in figure 3,6 downline road of water seepage mechanism is longitudinally positioned more mouthfuls of spaced inspection shafts 12, it is each to examine
Looking into well 12 is precast assembly structure.In the present embodiment: the circular inspection of a bite is arranged every 30m along route longitudinal direction in water seepage mechanism 6
Well 12 is looked into, inspection shaft 12 uses precast splice type, and it is concrete prefabricated that well lid 120, well bore 121 and well basis 122 are all made of C25.
As shown in Figure 4, Figure 5 and Figure 6, headwall 13 is arranged in the water outlet of water seepage mechanism 6, is provided with and keeps the temperature out on headwall 13
Mouthful, heat preservation outlet surrounding side slope carries out protective treatment.Preferably, the end, top and two sides side slope for keeping the temperature outlet, using plantation
False indigo protection.When sewer excavates, soil property and completely weathered rock location should set support, remaining location should be reinforced observing, if support.
The relative position of headwall 13 is as shown in figure Fig. 4, Fig. 5 and Fig. 6 in this example, and 14 be toe of wall line in figure, and 15 be gutter, and 16 be mixed
Solidifying earth foundation, 17 fill out cohesive soil to ram.
The anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions of the invention, realizes and arranges under envelope.Surface layer of subgrade bed is taken
Change filling out containing 5% cement stabilized graded macabam, blocks surface water to penetrate into from surface layer of subgrade bed, while the infiltration that bottom layer of subgrade two sides are added
French drain 6 strengthens subgrade bed drainability.As it can be seen that water source is effectively deflected from roadbed by the present invention, guarantee subgrade in permafrost soil zone
And cutting effectively prevents the generation of permafrost area embankment frost heave, thaw collapse disease not by ground, the erosion of underground water.
Embodiment two:
As Fig. 1 to Fig. 5 jointly shown in, the paving method of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions, including following step
It is rapid:
Step 1: obtaining the geology and water system in construction area；
Step 2: the roadbed in construction area successively changes from bottom to up, to fill out native non-frost heave A, B group, medium coarse sand and 5% cement gradation broken
Stone, and waterproof geotextiles 3 are laid in medium coarse sand；Wherein 5% cement stabilized graded macabam medium stone, it is desirable that gill shape is broken in particle
Stone content should not exceed 20%, and matter is soft, breakable stone contents are no more than 10%, and paste and content of organics are no more than 2%,
Nonuniformity coefficient U=D60/D10 is not less than 15, and 0.02mm or less granular mass percentage is not more than 3%.Meet simultaneously, particle
Diameter d≤0.075mm content is not more than 5% (weight ratio), and grain diameter d≤0.075mm content is not more than 7% (weight after compacting
Than)；And its nonuniformity coefficient U=D60/D10 cannot be less than 15,0.02mm or less granular mass percentage is not greater than 3%.In grain
Quality percentage shared by the particle with the plane of disruption is no less than 30% in coarse granule of the diameter greater than 22.4mm.
Surface layer of subgrade bed graded broken stone material property: Los Angeles rate of wear that partial size is greater than 1.7mm particle is not more than 30%；Grain
The metabisulfite solution soak loss rate that diameter is greater than 1.7mm particle is not more than 6%；Partial size is little greater than the fine grain liquid limit of 0.5mm
In 25%, plasticity index is less than 6；IV, clay and other impurity must not be contained.
Step 3: being laid with water seepage mechanism 6 in bottom layer of subgrade two sides, soakaway trench 7 is equipped in each water seepage mechanism 6.
In the present embodiment, in step 3, be laid with water seepage mechanism 6 specific method the following steps are included:
S1, digging groove carry out geology and water system survey to 6 present position of water seepage mechanism before construction, make water seepage mechanism 6 and ground
Table drainage system is coordinated；Land drainage is carried out before excavation；When construction is necessary to switch off original sewer pipe, temporary drain should be carried out,
Guarantee draining；Side slope should be modified in work progress at any time, keeps the stability and planarization of side slope；
S2, bottom of trench foundation construction, before filling concrete, groove is cleaned out, and filling concrete is carried out by expansion joint zonal cooling,
Each segmentation inner concrete should have been filled once, if interrupting for some reason, should stay construction joint by code requirement；
S3, installation soakaway trench 7 calculate tube coupling joint location, dig working pit in interface, depth is not before soakaway trench 7 is installed
Lower than 20 ㎝；It is connected using spigot-and-socket flexible joint, when installation should be such that tube coupling bellmouth meets to current direction, after hose is in place, answer
Tube coupling center, elevation are gradually adjusted to design position, and suitably add native stone cushion block or sandstone to fix in tube coupling two sides；Soakaway trench
The multiple permeable holes of interlaced arrangement on 7 tube wall, each permeable pitch of holes are not more than 200mm；
S4, trench backfill, after soakaway trench 7 is installed in place, the pipe shaft two sides of soakaway trench 7 symmetrically backfill graded broken stone, and are layered rammer
Real, every layer of backfill thickness is no more than 20 ㎝；When trench top backfills fine rock material, by substrate drainage direction from high to low to pipe shaft two
The side compacting of placement in layers simultaneously；Dank material should be hard, durable, clean rubble or cobble, should not contain mechanism, clay
Or other harmful substances, wherein viscosity and brittle particle content are no more than 3%, rubble wearing valve is not to be exceeded 50%.
Confining bed is arranged at the top of the ditch of water seepage mechanism 6 in S5, confining bed construction, using grouting or dry-laid rubble is built, or soil
Work synthesis impervious material is paved into, and rams fill out the clay waterproof layer that thickness is not less than 0.5m on it；There is gutter that can not set on french drain
Confining bed.
Step S6, loaded filter is constructed, and loaded filter is arranged in the lower section of confining bed, loaded filter selects even particle size
Broken, gravel placement in layers, adjacent layer particle diameter ratio are not less than 1:4, and thickness is not less than 15 cm, less than the sand of 0.15mm partial size
It should be less than 5%, bottom of trench longitudinal slope should be greater than 1%.It, should be first in bottom and two sides in the present embodiment when doing loaded filter using geotextile
Furrow bank is completed in place, and geotextile needed for reserved top covering, is straightened and is smoothly close to underlayer, all vertical or horizontal
Overlapping the slot should be alternately arranged, and the geotextiles lap of splice and indices should meet design and associated specifications requirement.
The construction material table of the present embodiment is as follows:
Water seepage mechanism fills crushing technique index in the present embodiment, see the table below:
| Project | Test rating |
| Parent rock intensity | Not less than 30MPa |
| Ballast grain sizes | 3cm~8cm |
| Clay content (by weight) | <2% |
The paving method of the anti-freeze expansion structural body of the Railway Roadbed in Permafrost Regions of invention has following compared with prior art
Advantage:
1, by reasonably selecting construction method, careful mobilization has timely and effectively handled the generation of extremely frigid zones roadbed
Frost failure situation not only substantially reduces the duration, and reduces construction cost；Construction finish through cost accounting it is total reduce at
About 2,000,000 yuan of this investment；
2, from the point of view of economic benefit angle, by extremely frigid zones it is frozen earth roadbed construction and to occurred frost heave roadbed research,
It summarizes, the freeze injuries disease such as thaw collapse, frost heave, accumulated ice for effectively preventing Cold And Frozen-soil Regions construction to occur again is avoided and done over again
The fund Deng caused by, duration waste, have saved construction cost.
Application example
In Permafrost Area railway construction, China experienced Daxinganling District railway, Qinghai-Tibet Railway, bavin wood railway and Kazakhstan
Big high-speed rail construction provides valuable experience to breathe out building for good railway.But breathe out good railway and be located in Heilongjiang Province, route is worn
More forest zone, the construction under ever-frozen ground environment is extremely complex, and existing construction method and technique are there are also to be improved, only by not
It is disconnected to grope and accumulate, it sums up the more mature other railway projects development & construction of technique and taking experience as fundamental project and company and mentions
For guidance.Construction practices of the good railway bed frost failure processing Jing Guo this engineering method are breathed out, frost heave situation is decreased obviously, subgrade stability
Property improve, in conjunction with later period continuous observation, railway bed quality has larger guarantee.Later construction railroad prevention roadbed is frozen
Swollen, thaw collapse disease has remarkable result.
The preferred embodiment of present invention described above, is not intended to limit the invention, it is all in spirit of the invention and
Within principle it is made it is any modification, etc. same Railway Roadbed in Permafrost Regions anti-freeze expansion structural body and paving method structure
Improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions, including roadbed and it is located at the embankment sides of the roadbed two sides
Slope, which is characterized in that the roadbed has been sequentially filled 5% cement stabilized graded macabam layer, medium coarse sand from surface layer of subgrade bed to bottom layer of subgrade
Layer, folder are layered on one layer of waterproof geotextiles between the medium-sand seam, non-frost heave A, B group soil layer；The bottom layer of subgrade two sides
It is equipped with water seepage mechanism, is equipped with soakaway trench in each water seepage mechanism.
2. the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 1, which is characterized in that the embankment
Side slope is equipped with the infiltration blind pipe for draining.
3. the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 1, which is characterized in that
The 5% cement stabilized graded macabam layer is with a thickness of 0.4~0.7m；
The medium-sand seam is with a thickness of 0.2m；
The waterproof geotextiles are according to 600g/m2Standard is laid with；And/or
Non- frost heave A, the B group soil thickness is 1.7~2.3m.
4. the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 1, which is characterized in that
1.2~1.6m of french drain bottom width of the water seepage mechanism；
Water seepage mechanism depth is changed lower than roadbed fills out bottom surface not less than 0.5m；
The top of the water seepage mechanism to lateral sulcus platform paving thoroughly between be laid with one layer of heat preservation plate, the insulation board with a thickness of
0.1m, the insulation board are arranged with blotter.
5. the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 4, which is characterized in that the infiltration
French drain downline road is longitudinally positioned more mouthfuls of spaced inspection shafts, and each inspection shaft is precast assembly structure.
6. the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 1 or 5, which is characterized in that described
Headwall is arranged in the water outlet of water seepage mechanism, and heat preservation outlet is provided on the headwall, and heat preservation outlet surrounding side slope carries out
Protective treatment.
7. the paving method of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions, which comprises the following steps:
Step 1: obtaining the geology and water system in construction area；
Step 2: the roadbed in the construction area successively changes from bottom to up fills out non-frost heave A, B group soil, medium coarse sand and 5% cement grade
With rubble, and waterproof geotextiles are laid in the medium coarse sand；
Step 3: being laid with water seepage mechanism in bottom layer of subgrade two sides, soakaway trench is equipped in each water seepage mechanism.
8. the paving method of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 6, feature exist
In, in the step 3, be laid with the specific method of water seepage mechanism the following steps are included:
S1, digging groove carry out geology and water system survey to the water seepage mechanism present position before construction, keep the infiltration blind
Ditch and top drainage system coordination；
S2, bottom of trench foundation construction, before filling concrete, groove is cleaned out, and filling concrete is carried out by expansion joint zonal cooling,
Each segmentation inner concrete should have been filled once, if interrupting for some reason, should stay construction joint by code requirement；
S3, installation soakaway trench calculate tube coupling joint location, dig working pit, depth in interface before the soakaway trench installation
Not less than 20 ㎝；It being connected using spigot-and-socket flexible joint, when installation, should be such that tube coupling bellmouth meets to current direction, after hose is in place,
Tube coupling center, elevation should be gradually adjusted to design position, and suitably add native stone cushion block or sandstone to fix in tube coupling two sides；It is described
The multiple permeable holes of interlaced arrangement on the tube wall of soakaway trench, each permeable pitch of holes are not more than 200mm；
S4, trench backfill, after the soakaway trench installation is in place, the pipe shaft two sides of soakaway trench symmetrically backfill graded broken stone, and are layered
Compacting；When trench top backfills fine rock material, tamped from high to low to the placement in layers simultaneously of pipe shaft two sides by substrate drainage direction；
Confining bed is arranged at the top of the ditch of the water seepage mechanism in S5, confining bed construction, using grouting or dry-laid rubble is built, or soil
Work synthesis impervious material is paved into, and rams fill out the clay waterproof layer that thickness is not less than 0.5m on it；There is gutter that can not set on french drain
Confining bed.
9. the paving method of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 8, feature exist
In further including step S6, loaded filter construction, loaded filter be arranged in the lower section of the confining bed, the loaded filter selects particle big
Small uniform broken, gravel placement in layers, adjacent layer particle diameter ratio are not less than 1:4, and thickness is not less than 15 cm, are less than 0.15mm
The sand of partial size should be less than 5%, and bottom of trench longitudinal slope should be greater than 1%.
10. the paving method of the anti-freeze expansion structural body of Railway Roadbed in Permafrost Regions according to claim 6, feature exist
In the 5% cement stabilized graded macabam medium stone, it is desirable that gill shape stone contents should not exceed 20% in particle, and matter is soft, breakable
Stone contents are no more than 10%, and paste and content of organics are no more than 2%, and nonuniformity coefficient U=D60/D10 is not less than 15,
0.02mm or less granular mass percentage is not more than 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088086.0A CN109736141A (en) | 2019-01-29 | 2019-01-29 | The anti-freeze expansion structural body and paving method of Railway Roadbed in Permafrost Regions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088086.0A CN109736141A (en) | 2019-01-29 | 2019-01-29 | The anti-freeze expansion structural body and paving method of Railway Roadbed in Permafrost Regions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109736141A true CN109736141A (en) | 2019-05-10 |
Family
ID=66366680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910088086.0A Pending CN109736141A (en) | 2019-01-29 | 2019-01-29 | The anti-freeze expansion structural body and paving method of Railway Roadbed in Permafrost Regions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109736141A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130155A (en) * | 2019-05-27 | 2019-08-16 | 南京工业大学 | Novel nanometer hot rod high-speed railway foundation for preventing roadbed frost heaving in seasonal frozen soil area |
| CN110172872A (en) * | 2019-06-12 | 2019-08-27 | 中铁第一勘察设计院集团有限公司 | Plateau hight-ice-content permafrost ground section of railway track chasm structuref and its construction method |
| CN110295571A (en) * | 2019-06-26 | 2019-10-01 | 中国科学院寒区旱区环境与工程研究所 | A kind of Permafrost Area prevents the flow structure that lake is burst |
| CN110409242A (en) * | 2019-08-22 | 2019-11-05 | 中交路桥北方工程有限公司 | A kind of antifreeze waterproof layer and roadbed |
| CN110424193A (en) * | 2019-08-21 | 2019-11-08 | 中铁第一勘察设计院集团有限公司 | Hollow module cutting structure of high-speed railway in plateau permafrost region |
| CN111364304A (en) * | 2020-03-10 | 2020-07-03 | 广东省交通规划设计研究院股份有限公司 | Roadbed structure suitable for water vapor migration prevention and control |
| CN111395066A (en) * | 2020-04-28 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Reconstruction structure and construction method for existing railway roadbed underground drainage system |
| CN111979866A (en) * | 2020-08-31 | 2020-11-24 | 西南石油大学 | A kind of antifreeze structure of subgrade in seasonally frozen soil area and its construction method |
| CN115198584A (en) * | 2022-06-01 | 2022-10-18 | 吉林市市政建设集团有限公司 | Roadbed laying method for frost heaving soil |
| CN117868083A (en) * | 2024-01-16 | 2024-04-12 | 中铁二院重庆勘察设计研究院有限责任公司 | Method for preventing and treating sulfate erosion disease of railway roadbed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006188905A (en) * | 2005-01-07 | 2006-07-20 | Hokkaido Univ | Construction material, construction material manufacturing method, construction method, railroad floor ballast, railroad floor ballast construction method, labor-saving track ground, construction method of labor-saving track ground, structure ground and structure ground Construction method |
| CN202730544U (en) * | 2012-08-08 | 2013-02-13 | 中铁第一勘察设计院集团有限公司 | Frost heave prevention roadbed structure in deep seasonal permafrost region |
| CN105200881A (en) * | 2015-10-21 | 2015-12-30 | 杭州江润科技有限公司 | Construction method for comprehensive treatment structure for subgrade frost damage in high cold region |
| CN105256683A (en) * | 2015-09-10 | 2016-01-20 | 东南大学 | Permafrost region roadbed thermal insulation construction method |
| JP2018084040A (en) * | 2016-11-21 | 2018-05-31 | 鹿島建設株式会社 | Ground improvement method and ground structure |
-
2019
- 2019-01-29 CN CN201910088086.0A patent/CN109736141A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006188905A (en) * | 2005-01-07 | 2006-07-20 | Hokkaido Univ | Construction material, construction material manufacturing method, construction method, railroad floor ballast, railroad floor ballast construction method, labor-saving track ground, construction method of labor-saving track ground, structure ground and structure ground Construction method |
| CN202730544U (en) * | 2012-08-08 | 2013-02-13 | 中铁第一勘察设计院集团有限公司 | Frost heave prevention roadbed structure in deep seasonal permafrost region |
| CN105256683A (en) * | 2015-09-10 | 2016-01-20 | 东南大学 | Permafrost region roadbed thermal insulation construction method |
| CN105200881A (en) * | 2015-10-21 | 2015-12-30 | 杭州江润科技有限公司 | Construction method for comprehensive treatment structure for subgrade frost damage in high cold region |
| JP2018084040A (en) * | 2016-11-21 | 2018-05-31 | 鹿島建設株式会社 | Ground improvement method and ground structure |
Non-Patent Citations (1)
| Title |
|---|
| 无: "新建哈尔滨至佳木斯铁路指导性施工组织设计", 《道客阅读》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130155A (en) * | 2019-05-27 | 2019-08-16 | 南京工业大学 | Novel nanometer hot rod high-speed railway foundation for preventing roadbed frost heaving in seasonal frozen soil area |
| CN110172872A (en) * | 2019-06-12 | 2019-08-27 | 中铁第一勘察设计院集团有限公司 | Plateau hight-ice-content permafrost ground section of railway track chasm structuref and its construction method |
| CN110295571A (en) * | 2019-06-26 | 2019-10-01 | 中国科学院寒区旱区环境与工程研究所 | A kind of Permafrost Area prevents the flow structure that lake is burst |
| CN110424193A (en) * | 2019-08-21 | 2019-11-08 | 中铁第一勘察设计院集团有限公司 | Hollow module cutting structure of high-speed railway in plateau permafrost region |
| CN110409242A (en) * | 2019-08-22 | 2019-11-05 | 中交路桥北方工程有限公司 | A kind of antifreeze waterproof layer and roadbed |
| CN111364304A (en) * | 2020-03-10 | 2020-07-03 | 广东省交通规划设计研究院股份有限公司 | Roadbed structure suitable for water vapor migration prevention and control |
| CN111364304B (en) * | 2020-03-10 | 2025-04-29 | 广东省交通规划设计研究院集团股份有限公司 | A roadbed structure suitable for preventing and controlling water vapor migration |
| CN111395066A (en) * | 2020-04-28 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Reconstruction structure and construction method for existing railway roadbed underground drainage system |
| CN111979866A (en) * | 2020-08-31 | 2020-11-24 | 西南石油大学 | A kind of antifreeze structure of subgrade in seasonally frozen soil area and its construction method |
| CN111979866B (en) * | 2020-08-31 | 2021-11-12 | 西南石油大学 | A kind of antifreeze structure of subgrade in seasonally frozen soil area and its construction method |
| CN115198584A (en) * | 2022-06-01 | 2022-10-18 | 吉林市市政建设集团有限公司 | Roadbed laying method for frost heaving soil |
| CN117868083A (en) * | 2024-01-16 | 2024-04-12 | 中铁二院重庆勘察设计研究院有限责任公司 | Method for preventing and treating sulfate erosion disease of railway roadbed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111851505B (en) | Construction method and structure of filling type anti-seepage core wall earth-rock dam | |
| CN101956355A (en) | Subgrade structure for preventing and controlling road damage in seasonal frozen regions | |
| CN110924254A (en) | A kind of construction technology of carbonaceous shale roadbed filling | |
| CN111535105B (en) | Waterproof isolation protection structure and construction method for municipal road subgrade in coastal plain areas | |
| CN104532712A (en) | Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road | |
| CN201738208U (en) | Roadbed structure for preventing road damage in seasonally frozen ground area | |
| CN116377780A (en) | Construction Method of High Fill Subgrade in Mountainous Highway | |
| CN101914882B (en) | Structure and construction method of low embankment in silty soil area with high groundwater level | |
| CN204825539U (en) | Control difference in temperature prevents roadbed structure of cold mountain area highway inhomogeneous deformation | |
| CN113265924A (en) | Construction method for using red bed mudstone blocks as high-fill dynamic compaction roadbed filling | |
| CN210262542U (en) | Road structure for sponge city construction | |
| CN116876280B (en) | Construction method of high embankment | |
| CN106592346A (en) | Head chute separated type ballastless track cutting bed structure for middle-strong salinized soil areas | |
| CN219794131U (en) | Municipal rural sewage engineering silt soft soil drainage pipe foundation reinforcing structure | |
| CN103243624B (en) | Construction method for salty soil district railway roadbed with water content lower than liquid limit | |
| CN117552278A (en) | A roadbed treatment structure and construction method for passing through permafrost areas | |
| CN116200980A (en) | Roadbed structure at highway filling and digging juncture and construction method thereof | |
| CN208167421U (en) | A kind of underground water cutting location Ballast track high-speed railway anti-freeze expansion road structure | |
| CN111287040A (en) | Method for constructing liquid soil road | |
| CN203960699U (en) | Road cutting type protecting immersion road structure | |
| CN119221335B (en) | A method for treating mud and slurry in expansive rock soil roadbed of ballasted railway | |
| CN210421127U (en) | Tunnel engineering back pressure backfill structure for treating shallow buried bias voltage diseases | |
| CN106638200A (en) | Roadbed antifreezing and drained water interception facility and construction method suitable for seasonally frozen-ground region | |
| CN102587399B (en) | Salivary flow ice prevention and management structure in cold zone | |
| CN112813756A (en) | Roadbed based on municipal soft soil and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Hai Inventor after: Yan Guoqing Inventor after: Yang Yijie Inventor after: Hao Yufeng Inventor after: Bai Chao Inventor after: Li Zhanqiang Inventor after: Epalia abduville Inventor before: Zhang Hai Inventor before: Yan Guoqing Inventor before: Yang Yijie |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210727 Address after: 895 Hetan North Road, Xinshi District, Urumqi, Xinjiang Uygur Autonomous Region 830000 Applicant after: CHINA CONSTRUCTION XINJIANG CONSTRUCTION ENGINEERING CIVIL ENGINEERING Co.,Ltd. Applicant after: China State Construction Xinjiang Construction Engineering(Group) Co.,Ltd. Address before: 895 Hetan North Road, Xinshi District, Urumqi, Xinjiang Uygur Autonomous Region 830000 Applicant before: CHINA CONSTRUCTION XINJIANG CONSTRUCTION ENGINEERING CIVIL ENGINEERING Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190510 |
|
| RJ01 | Rejection of invention patent application after publication |