CN105350417B - A kind of high and cold roadbed frozen soil thermal-insulation construction method - Google Patents
A kind of high and cold roadbed frozen soil thermal-insulation construction method Download PDFInfo
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- CN105350417B CN105350417B CN201510649896.0A CN201510649896A CN105350417B CN 105350417 B CN105350417 B CN 105350417B CN 201510649896 A CN201510649896 A CN 201510649896A CN 105350417 B CN105350417 B CN 105350417B
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- Prior art keywords
- roadbed
- ice
- height
- permafrost
- subgrade
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention discloses a kind of high and cold roadbed frozen soil thermal-insulation construction methods, the following steps are included: (1) reconnoitres data according to all fronts frozen soil, it is divided into three sections for completely frozen earth roadbed, respectively lack ice, more ice permafrost regions, Fu Bing, full ice permafrost region and the section of the ice sheet containing soil, (2) it constructs to few ice, more ice permafrost regions, (3) it constructs to rich ice, full ice permafrost region, (4) construct to the section containing native ice sheet.The control that the present invention passes through key technology, preferably solves the biggish roadbed slope foot of lateral slope of ground, the rafting problem of cutting top suprapermafrost water, water source is effectively deflected from into roadbed bottom, guarantee subgrade in permafrost soil zone and cutting not by the erosion of ground water, the generation of permafrost area embankment frost heave, thaw collapse disease can be effectively prevented, permafrost area embankment, pavement construction regulation and standardization, mechanization tissue are reasonable, pass through piecewise-parallel operation, continuous productive process in section, it improves working efficiency, guarantee that construction quality, benefit are more prominent.
Description
Technical field
The present invention relates to a kind of high and cold roadbed frozen soil thermal-insulation construction methods.
Background technique
With the fast development of highway in China building cause, high latitude, extremely frigid zones start to build highway successively in recent years,
Since highway alignment permafrost distribution is relatively wide, complicated hydrogeological conditions, when highway is implemented, generally only implement roadbed,
The engineerings such as bridges and culverts, draining and protection, road pavement are temporarily not carried out, remaining section equal making asphalt concrete pavement, by for many years
Operation, the above section major part roadbed situation is preferable, but due to the non-making in road surface, roadbed top surface is uneven, and local roadbed
There are the diseases such as different degrees of frost boiling, restrict the resource transport traffic capacity, the present invention combines the disease shape of existing highway
Condition and hydrogeological characteristics carry out Disease Treatment processing to the above section, and the transport to guarantee all fronts highway is unimpeded, along improvement
Highway capacity.
Summary of the invention
The present invention addresses the above problem, provides a kind of high and cold roadbed frozen soil thermal-insulation construction method, can guarantee for many years
Frozen earth roadbed and cutting by the erosion of ground water, can not effectively prevent the generation of permafrost area embankment frost heave, thaw collapse disease.
Above-mentioned purpose to realize the present invention, the present invention adopt the following technical scheme that a kind of high and cold roadbed frozen soil is heat-insulated to be applied
Work method, which comprises the following steps:
(1) according to all fronts frozen soil reconnoitre data, by completely it is frozen earth roadbed be divided into three sections, respectively less ice, more ice permafrost regions,
Fu Bing, full ice permafrost region and the section of the ice sheet containing soil；
(2) construct to few ice, more ice permafrost regions: by former Subgrade of old road height and this increase roadbed analysis,
Most of section height is all larger than 2.0m, and according to field investigation, roadbed filling is filled substantially with boulder and cobble soil, gravelly soil, road
Base situation is preferable, therefore this no longer carries out specially treated, handles by general subgrade, reinforces draining, protection works, only to dredge road
Primitive period side charge for remittance prevents water from penetrating into roadbed, influences subgrade stability；
(3) construct to rich ice, full ice permafrost region: by former Subgrade of old road height and this increase roadbed analysis,
Most of section height is all larger than the rational height of roadbed and critical height of subgrade being computed, therefore to guarantee subgrade stability, it takes
Roadbed two sides setting heat preservation banket, banket width and height, when roadbed height is greater than 3.0m, banket width 3.0m,
Height 1.5m；When roadbed height is less than 3.0m, banket width 3.0m, height 1.2m, and reinforce roadbed two sides guarded drainage and set
Meter prevents water from penetrating into roadbed, influences subgrade stability to dredge roadbed periphery charge for remittance；
(4) it constructs to the section containing native ice sheet:
(a) it is less than embankment, semi-filling and semi-excavating and the cut subgrade of 1.8m for roadbed raising, it is contemplated that in ever-frozen ground
Area, grit Pavement Improvement for after bituminous pavement, significant degeneration will occur for ever-frozen ground, constantly dislike by frozen earth roadbed thermal stability
Change, therefore, in order to ensure that roadbed temperature, a thickness 6cmXSP insulation board is arranged in this secondary design below bed course at 50cm heat-insulated
Layer, with subgrade defect caused by protection of permafrost steady change, and reinforces roadbed two sides waterproof and drainage design, to dredge the remittance of roadbed periphery
Water prevents water from penetrating into roadbed, influences subgrade stability, at the same according to roadbed height, topographic features be provided with wide 3.0m, it is high by 1.2~
1.5m keeps the temperature banket；
(b) for the filled-up ground of 1.8 < H≤2.5m of roadbed raising, to guarantee subgrade stability, this uses cutouts
Simultaneously piece, block stone ventilated embankment is arranged in existing old road, piece, block stone ventilation thickness 0.8m, after making 20cm thickness metalling is levelling thereon
It carries out heavy type to roll, then the leveling of making 20cm grit, loaded filter, the levelling size controlling of rubble is in 5~10cm；
(c) for roadbed raising H > 2.5m, this is higher in view of roadbed height, and old road based filler is preferable, existing old road
Base overall stability is preferable, therefore takes and heat preservation banket, slope protection road width 3.0m, high 1.2~1.5m is arranged in roadbed two sides；
(d) it for section of bursting and become muddy when a thaw sets in along the line, is taken according to roadbed raising and topographic features: the road 1.8m is greater than for roadbed raising
Section is taken after excavating old road frost boiling part to stabilized zone position, setting rubble ventilation embankment, piece, block stone ventilation thickness 0.8m, thereon
It carries out heavy type after making 20cm thickness metalling screed-coat to roll, then the leveling of making 20cm grit, loaded filter, the levelling partial size of rubble
Control is in 5~10cm；Embankment and excavation section for roadbed raising less than 1.8m, take after excavating old road part, to roadbed
Range 80cm thickness, which changes, fills out grit processing, and a thickness 6cmXSP insulation board thermal insulation layer is arranged at the 50cm of road surface bottom surface.
The beneficial effects of the present invention are: the high and cold roadbed frozen soil thermal-insulation construction method, by the control of key technology, preferably
Ground solves the biggish roadbed slope foot of lateral slope of ground, and water source is effectively deflected from road by the rafting problem of cutting top suprapermafrost water
Substrate guarantees that subgrade in permafrost soil zone and cutting not by the erosion of ground water, can effectively prevent permafrost area embankment frost heave, melt
The generation of heavy disease, permafrost area embankment, pavement construction regulation and standardization, mechanization tissue are reasonable, flat by being segmented
Row operation, continuous productive process in section improve working efficiency, guarantee that construction quality, benefit are more prominent.
Specific embodiment
A kind of high and cold roadbed frozen soil thermal-insulation construction method of the invention:
(1) according to all fronts frozen soil reconnoitre data, by completely it is frozen earth roadbed be divided into three sections, respectively less ice, more ice permafrost regions,
Fu Bing, full ice permafrost region and the section of the ice sheet containing soil；
(2) construct to few ice, more ice permafrost regions: by former Subgrade of old road height and this increase roadbed analysis,
Most of section height is all larger than 2.0m, and according to field investigation, roadbed filling is filled substantially with boulder and cobble soil, gravelly soil, road
Base situation is preferable, therefore this no longer carries out specially treated, handles by general subgrade, reinforces draining, protection works, only to dredge road
Primitive period side charge for remittance prevents water from penetrating into roadbed, influences subgrade stability；
(3) construct to rich ice, full ice permafrost region: by former Subgrade of old road height and this increase roadbed analysis,
Most of section height is all larger than the rational height of roadbed and critical height of subgrade being computed, therefore to guarantee subgrade stability, it takes
Roadbed two sides setting heat preservation banket, banket width and height, when roadbed height is greater than 3.0m, banket width 3.0m,
Height 1.5m；When roadbed height is less than 3.0m, banket width 3.0m, height 1.2m, and reinforce roadbed two sides guarded drainage and set
Meter prevents water from penetrating into roadbed, influences subgrade stability to dredge roadbed periphery charge for remittance；
(4) it constructs to the section containing native ice sheet:
(a) it is less than embankment, semi-filling and semi-excavating and the cut subgrade of 1.8m for roadbed raising, it is contemplated that in ever-frozen ground
Area, grit Pavement Improvement for after bituminous pavement, significant degeneration will occur for ever-frozen ground, constantly dislike by frozen earth roadbed thermal stability
Change, therefore, in order to ensure that roadbed temperature, a thickness 6cmXSP insulation board is arranged in this secondary design below bed course at 50cm heat-insulated
Layer, with subgrade defect caused by protection of permafrost steady change, and reinforces roadbed two sides waterproof and drainage design, to dredge the remittance of roadbed periphery
Water prevents water from penetrating into roadbed, influences subgrade stability, at the same according to roadbed height, topographic features be provided with wide 3.0m, it is high by 1.2~
1.5m keeps the temperature banket；
(b) for the filled-up ground of 1.8 < H≤2.5m of roadbed raising, to guarantee subgrade stability, this uses cutouts
Simultaneously piece, block stone ventilated embankment is arranged in existing old road, piece, block stone ventilation thickness 0.8m, after making 20cm thickness metalling is levelling thereon
It carries out heavy type to roll, then the leveling of making 20cm grit, loaded filter, the levelling size controlling of rubble is in 5~10cm；
(c) for roadbed raising H > 2.5m, this is higher in view of roadbed height, and old road based filler is preferable, existing old road
Base overall stability is preferable, therefore takes and heat preservation banket, slope protection road width 3.0m, high 1.2~1.5m is arranged in roadbed two sides；
(d) it for section of bursting and become muddy when a thaw sets in along the line, is taken according to roadbed raising and topographic features: the road 1.8m is greater than for roadbed raising
Section is taken after excavating old road frost boiling part to stabilized zone position, setting rubble ventilation embankment, piece, block stone ventilation thickness 0.8m, thereon
It carries out heavy type after making 20cm thickness metalling screed-coat to roll, then the leveling of making 20cm grit, loaded filter, the levelling partial size of rubble
Control is in 5~10cm；Embankment and excavation section for roadbed raising less than 1.8m, take after excavating old road part, to roadbed
Range 80cm thickness, which changes, fills out grit processing, and a thickness 6cmXSP insulation board thermal insulation layer is arranged at the 50cm of road surface bottom surface.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention, and any reference signs in the claims should not be construed as limiting the involved claims.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (1)
1. a kind of high and cold roadbed frozen soil thermal-insulation construction method, which comprises the following steps:
(1) data is reconnoitred according to all fronts frozen soil, is divided into three sections for completely frozen earth roadbed, respectively ice, more ice permafrost regions, richness less
Ice, full ice permafrost region and the section of the ice sheet containing soil；
(2) construct to few ice, more ice permafrost regions: by former Subgrade of old road height and this increase roadbed analysis, big portion
Pavement branch sections height is all larger than 2.0m, and according to field investigation, roadbed filling is filled substantially with boulder and cobble soil, gravelly soil, roadbed shape
Condition is preferable, therefore this no longer carries out specially treated, handles by general subgrade, only reinforces draining, protection works, to dredge roadbed week
Side charge for remittance prevents water from penetrating into roadbed, influences subgrade stability；
(3) construct to rich ice, full ice permafrost region: by former Subgrade of old road height and this increase roadbed analysis, big portion
Pavement branch sections height is all larger than the rational height of roadbed and critical height of subgrade being computed, therefore to guarantee subgrade stability, take roadbed
Two sides setting heat preservation banket, banket width and height, when roadbed height is greater than 3.0m, banket width 3.0m, height
1.5m；When roadbed height is less than 3.0m, banket width 3.0m, height 1.2m, and reinforce roadbed two sides waterproof and drainage design, with
Roadbed periphery charge for remittance is dredged, prevents water from penetrating into roadbed, influences subgrade stability；
(4) it constructs to the section containing native ice sheet:
(a) it is less than embankment, semi-filling and semi-excavating and the cut subgrade of 1.8m for roadbed raising, it is contemplated that husky in Permafrost Area
For after bituminous pavement, significant degeneration will occur for ever-frozen ground, frozen earth roadbed thermal stability constantly deteriorates gravel Pavement Improvement, because
, to guarantee roadbed temperature, a thickness 6cmXSP insulation board thermal insulation layer is arranged in this secondary design below bed course at 50cm for this, with
Subgrade defect caused by protection of permafrost steady change, and reinforce roadbed two sides waterproof and drainage design, to dredge roadbed periphery charge for remittance, prevent
Sealing penetrates into roadbed, influences subgrade stability, while protecting provided with wide 3.0m, high 1.2~1.5m according to roadbed height, topographic features
Warm banket；
(b) for the filled-up ground of 1.8 < H≤2.5m of roadbed raising, to guarantee subgrade stability, this is existing using cutouts
Simultaneously piece, block stone ventilated embankment is arranged in old road, and piece, block stone ventilation thickness 0.8m carry out after making 20cm thickness metalling is levelling thereon
Heavy type rolls, then the leveling of making 20cm grit, loaded filter, and the levelling size controlling of rubble is in 5~10cm；
(c) for roadbed raising H > 2.5m, this is higher in view of roadbed height, and old road based filler is preferable, and existing old road base is whole
Body stability is preferable, therefore takes and heat preservation banket, slope protection road width 3.0m, high 1.2~1.5m is arranged in roadbed two sides；
(d) it for section of bursting and become muddy when a thaw sets in along the line, is taken according to roadbed raising and topographic features: the section 1.8m is greater than for roadbed raising,
It takes after excavating old road frost boiling part to stabilized zone position, rubble ventilation embankment, piece, block stone ventilation thickness 0.8m, upper berth is set
Progress heavy type rolls after building 20cm thickness metalling screed-coat, then the leveling of making 20cm grit, loaded filter, the levelling partial size control of rubble
System is in 5~10cm；Embankment and excavation section for roadbed raising less than 1.8m, take after excavating old road part, to roadbed model
It encloses in 80cm thickness, changes and fill out grit processing, and a thickness 6cmXSP insulation board thermal insulation layer is set at the 50cm of road surface bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649896.0A CN105350417B (en) | 2015-10-10 | 2015-10-10 | A kind of high and cold roadbed frozen soil thermal-insulation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649896.0A CN105350417B (en) | 2015-10-10 | 2015-10-10 | A kind of high and cold roadbed frozen soil thermal-insulation construction method |
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| Publication Number | Publication Date |
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| CN105350417A CN105350417A (en) | 2016-02-24 |
| CN105350417B true CN105350417B (en) | 2019-02-12 |
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| CN201510649896.0A Expired - Fee Related CN105350417B (en) | 2015-10-10 | 2015-10-10 | A kind of high and cold roadbed frozen soil thermal-insulation construction method |
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| CN112342858A (en) * | 2020-10-27 | 2021-02-09 | 东南大学 | Permafrost region precast hollow slab base pavement structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2006110433A (en) * | 2006-03-31 | 2007-10-10 | Александр Владимирович Конюхов (RU) | ROAD DESIGN |
| CN102433814A (en) * | 2011-12-29 | 2012-05-02 | 中交第一公路勘察设计研究院有限公司 | Permafrost region expressway flaky and blocky stone ventilation roadbed and construction method thereof |
| CN203229849U (en) * | 2013-04-19 | 2013-10-09 | 中交第一公路勘察设计研究院有限公司 | Highway excavation roadbed of road segment rich in ice, full of ice and containing soil-ice layer |
-
2015
- 2015-10-10 CN CN201510649896.0A patent/CN105350417B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2006110433A (en) * | 2006-03-31 | 2007-10-10 | Александр Владимирович Конюхов (RU) | ROAD DESIGN |
| CN102433814A (en) * | 2011-12-29 | 2012-05-02 | 中交第一公路勘察设计研究院有限公司 | Permafrost region expressway flaky and blocky stone ventilation roadbed and construction method thereof |
| CN203229849U (en) * | 2013-04-19 | 2013-10-09 | 中交第一公路勘察设计研究院有限公司 | Highway excavation roadbed of road segment rich in ice, full of ice and containing soil-ice layer |
Non-Patent Citations (3)
| Title |
|---|
| 多年冻土路基施工技术;陈家忠;《铁道道路》;20080520;第249-251页 |
| 新藏公路新疆段多年冻土的分布特征与路基设计对策;章金钊等;《公路交通科技》;20080915;第25卷(第9期);第251-254页 |
| 高纬度多年冻土地区公路路基施工技术;王福明等;《道路工程》;20140623;第6-10页 |
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| CN105350417A (en) | 2016-02-24 |
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