CN110306393A - A kind of involution form high temperature permafrost area reinforcement heat melts a road structure - Google Patents
A kind of involution form high temperature permafrost area reinforcement heat melts a road structure Download PDFInfo
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- CN110306393A CN110306393A CN201910625553.9A CN201910625553A CN110306393A CN 110306393 A CN110306393 A CN 110306393A CN 201910625553 A CN201910625553 A CN 201910625553A CN 110306393 A CN110306393 A CN 110306393A
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- reinforcement heat
- high temperature
- frozen soil
- melts
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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
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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
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
A kind of involution form high temperature permafrost area reinforcement heat melts a road structure, is related to Frozen Ground Area highway subgrade technical field, is quickly discharged to solve the problems, such as that the prior art can not effectively control involution form high temperature permafrost area frozen soil thawing moisture.Roadbed of the invention is followed successively by permanent frozen soil foundation, non-frozen soil foundation, sand mat of subgrade, filled-up ground, sub-surface and top course from bottom to top；Reinforcement heat melts stake and protrudes into permanent frozen soil foundation through non-frozen soil foundation；Reinforcement heat melts stake for being water by the ice-out in permanent frozen soil foundation, and water melts stake along reinforcement heat and reaches sand mat of subgrade, is discharged by sand mat of subgrade.High Temperature Permafrost in subgrade soils can actively be melted and road structure is discharged in the moisture after thawing by the present invention, so that roadbed keeps good bearing capacity.
Description
Technical field
The present invention relates to Frozen Ground Area highway subgrade technical fields, and in particular to the degrading permafrost area road Re Rongzhuan
Base.
Background technique
Since global climate turns the warm frequent engineering activity joint effect of the mankind, high temperature permafrost is constantly moved back
Change.High Temperature Permafrost compressibility is high, unfrozen water content is big and phase transformation is violent, leads to high temperature and the depression of ice-rich permafrost section is serious, pole
The earth constrains the safety and high efficiency of road, brings greatly to people life property safety and socio-economic development
Hidden danger.
Currently, permanent frozen soil foundation punishment mainly follows the principle of " protection " and " destruction ".However, since high temperature freezes for many years
Native degenerative obvious, island distribution, and there is the particularity such as temperature is high, the upper limit is relatively deep, surface pond is abundant, traditional protection
Measure, such as hot pin, clear table add rubble backfill, insulation board, heat preservation banket to fail the purpose for reaching effective control settlement.Although
The sedimentation of shallow-layer and thin layer frozen soil foundation can be controlled using excavating plus changing the method filled out, but engineering cost is expensive, is unfavorable for freezing
Native ecological environmental protection and recovery, and secondary harm is stacked and be easy to produce to the frozen soil after excavating.For this purpose, high for involution form
It is the characteristics of warm frozen soil foundation, more reasonable using the principle for destroying frozen soil.Traditional destruction frozen soil method passes through and melts in advance
It influences the frozen soil in works scope or excavates frozen soil and add to change to fill out the good gritting material of water penetration.Melting method in advance can be divided into again: ground
Table vegetation stripping method, earth's surface blacken method, plastic covering membrane process, electric heating, quick lime etc..However, due to frozen soil thawing and ground
The collective effect of table water, the ground after often making pre- melt is in a saturated state, and intensity is very low, under the action of vehicular load
It is easy to produce differential settlement, influences comfort and the safety of driving, and undischarged moisture can return after temperature decline
Freeze, pre- melt is made to act on failure.
Summary of the invention
The purpose of the present invention is to solve the prior arts can not effectively control involution form high temperature permafrost area frozen soil
Melt moisture to be quickly discharged and reduce roadbed bearing capacity, and then roadbed is caused to generate serious sedimentation, reduces the road occupation longevity
The problem of ordering, influencing the patency and safety of road traffic, to provide a kind of involution form high temperature permafrost area reinforcement
Heat melts a road structure.
A kind of involution form high temperature permafrost area of the present invention reinforcement heat melts a road structure, the roadbed from lower and
On be followed successively by permanent frozen soil foundation 1, non-frozen soil foundation 3, sand mat of subgrade 4, filled-up ground 5, sub-surface 6 and top course 7；
Reinforcement heat melts stake 2 and protrudes into permanent frozen soil foundation 1 through non-frozen soil foundation 3；
Reinforcement heat melts stake 2 for being water by the ice-out in permanent frozen soil foundation 1, and water melts stake 2 along reinforcement heat and reaches row
Water sand bed course 4 is discharged by sand mat of subgrade 4.
Preferably, it includes coarse-grained soil, quick lime and TGXG that reinforcement heat, which melts stake 2,；
TGXG is used to wrap up the mixed fillers of coarse-grained soil and quick lime.
Preferably, the mass fraction that partial size is greater than the part 20mm in coarse-grained soil is greater than 50%, and the maximum grain of coarse-grained soil
Diameter is less than or equal to 50mm.
Preferably, TGXG is active drainage geogrid.
Preferably, reinforcement heat, which is melted, is equipped with sensor in stake 2, sensor is for measuring its ambient temperature and pore water pressure
Power.
Beneficial effects of the present invention:
1. a kind of involution form high temperature permafrost area new-type embankment structure of the invention be suitable for ever-frozen ground temperature compared with
Ice content is higher in high, frozen soil and permafrost degradation trend is significantly regional, can actively melt the High Temperature Permafrost in subgrade soils simultaneously
Road structure is discharged in moisture after thawing, so that roadbed keeps good bearing capacity, it is ensured that roadbed has good work
State；
2. a kind of involution form high temperature permafrost area new-type embankment structure of the invention melts stake using reinforcement heat and forms one
Kind NEW TYPE OF COMPOSITE roadbed, can be improved Frozen Ground Area roadbed bearing capacity, effectively reduces the subgrade settlement of high temperature permafrost area.
Detailed description of the invention
Fig. 1 is that a kind of involution form high temperature permafrost area reinforcement heat described in specific embodiment one melts a road structure
Structural schematic diagram；
Fig. 2 is the structural schematic diagram that reinforcement heat in specific embodiment two melts stake；
(a) it is the mixed fillers of coarse-grained soil and quick lime, is (b) TGXG of simulation, is (c) TGXG of simulation
Fill the mixed fillers of full coarse-grained soil and quick lime；
Fig. 3 is the practical structures schematic diagram of the TGXG in specific embodiment two.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1, a kind of involution form described in present embodiment is high
Warm Permafrost Area reinforcement heat melts a road structure, which is followed successively by permanent frozen soil foundation 1, non-frozen soil foundation from bottom to top
3, sand mat of subgrade 4, filled-up ground 5, sub-surface 6 and top course 7；
Reinforcement heat melts stake 2 and protrudes into permanent frozen soil foundation 1 through non-frozen soil foundation 3；
Reinforcement heat melts stake 2 for being water by the ice-out in permanent frozen soil foundation 1, and water melts stake 2 along reinforcement heat and reaches row
Water sand bed course 4 is discharged by sand mat of subgrade 4.
Filled-up ground 5 (i.e. embankment), sub-surface 6, top course 7 are layered making on sand mat of subgrade 4, to bear
The effect of vehicular load.
Specific embodiment 2: illustrating present embodiment in conjunction with Fig. 2 and Fig. 3, present embodiment is to specific implementation
A kind of involution form high temperature permafrost area reinforcement heat described in mode one is melted a road structure and is described further, this embodiment party
In formula, it includes coarse-grained soil, quick lime and TGXG that reinforcement heat, which melts stake 2,；
TGXG is used to wrap up the mixed fillers of coarse-grained soil and quick lime.
The reinforcement heat of present embodiment melts stake with good strength and stiffness, and reinforcement heat melts stake 2 and permanent frozen soil foundation 1
And non-frozen soil foundation 3 collectively constitutes composite foundation, has outstanding bearing capacity.
Reinforcement heat melts the quick lime ingredient in stake 2 can react a large amount of heat of releasing with water, can by ever-frozen ground
Ice-out in base 1 is water；Reinforcement heat melts stake 2 and sand mat of subgrade 4 forms drainage channel, will melt in permanent frozen soil foundation 1
Water discharge involution form high temperature permafrost area heat melt a roadbed, to reduce the water content of roadbed.
The mixture that coarse-grained soil and quick lime are wrapped up using TGXG forms a kind of completely new pile body and compound roadbed
Structure can actively melt subgrade in permafrost soil zone and new drain function, can also promote the bearing capacity of roadbed,
It achieves many things at one stroke.
Specific embodiment 3: present embodiment is frozen for many years to a kind of involution form high temperature described in specific embodiment two
Soil area reinforcement heat is melted a road structure and is described further, and in present embodiment, TGXG is active drainage geogrid.
Preferably the water melted in permanent frozen soil foundation 1 can be discharged using Active Drainage TGXG.
A kind of involution form high temperature permafrost area reinforcement heat of present embodiment melts the construction method of a road structure, should
Method includes:
Step 1: determining high temperature permafrost distribution situation along proposed road first, can be bored by historical summary, scene
It visits and temperature monitoring obtains the bound of ever-frozen ground, to determine that construction section and reinforcement heat melt pile body length；It can lead to
Cross survey data and combine indoor reduced scale test determine reasonable quick lime-coarse-grained soil proportion, reinforcement heat melt a pile body size and
Reinforcement heat melts an arrangement form；
Step 2: using vibration by not in the non-frozen soil foundation 3 on the permanent frozen soil foundation 1 of proposed roadbed corresponding position
Frozen soil foundation 3 squeezes into steel pipe to permanent frozen soil foundation 1, then takes out the foundation soil in steel pipe；
Step 3: TGXG is arranged in steel pipe, by the mixed fillers of pre-configured coarse-grained soil and quick lime point
Layer is packed into TGXG and carries out vibrating compacting, while in location arrangements sensor to be measured to monitor temperature and pore water pressure
The situation of change of power takes out steel pipe after filling；
Step 4: being laid with sand mat of subgrade 4 on non-frozen soil foundation 3, foundation soil consolidation, preloading are carried out by piling prepressing
By the ice-out in non-frozen soil foundation 3, water melts stake 2 along reinforcement heat and reaches Water-drainage sand pad for quick lime and water exothermic heat of reaction when precompressed
Layer 4, is discharged by sand mat of subgrade 4；
Step 5: foundation soil (i.e. permanent frozen soil foundation and non-frozen soil foundation) consolidate after, on sand mat of subgrade 4 according to
Secondary clearing fills filled-up ground 5, sub-surface 6 and top course 7.
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.
Claims (5)
1. a kind of involution form high temperature permafrost area reinforcement heat melts a road structure, which is characterized in that the roadbed is from bottom to top
It is followed successively by permanent frozen soil foundation (1), non-frozen soil foundation (3), sand mat of subgrade (4), filled-up ground (5), sub-surface (6) and road
Face surface layer (7)；
Reinforcement heat melts stake (2) and protrudes into permanent frozen soil foundation (1) through non-frozen soil foundation (3)；
Reinforcement heat melts stake (2) for being water by the ice-out in permanent frozen soil foundation (1), and water melts stake (2) along reinforcement heat and reaches
Sand mat of subgrade (4) is discharged by sand mat of subgrade (4).
2. a kind of involution form high temperature permafrost area according to claim 1 reinforcement heat melts a road structure, feature
It is, it includes coarse-grained soil, quick lime and TGXG that the reinforcement heat, which melts stake (2),；
TGXG is used to wrap up the mixed fillers of coarse-grained soil and quick lime.
3. a kind of involution form high temperature permafrost area according to claim 2 reinforcement heat melts a road structure, feature
Be, in the coarse-grained soil partial size be greater than the part 20mm mass fraction be greater than 50%, and the maximum particle diameter of coarse-grained soil be less than etc.
In 50mm.
4. a kind of involution form high temperature permafrost area according to claim 2 reinforcement heat melts a road structure, feature
It is, the TGXG is active drainage geogrid.
5. a kind of involution form high temperature permafrost area according to claim 1 reinforcement heat melts a road structure, feature
It is, the reinforcement heat, which is melted, is equipped with sensor in stake (2), sensor is for measuring its ambient temperature and pore water pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625553.9A CN110306393A (en) | 2019-07-11 | 2019-07-11 | A kind of involution form high temperature permafrost area reinforcement heat melts a road structure |
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| CN201910625553.9A CN110306393A (en) | 2019-07-11 | 2019-07-11 | A kind of involution form high temperature permafrost area reinforcement heat melts a road structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535106A (en) * | 2020-05-14 | 2020-08-14 | 哈尔滨工业大学 | Method for reducing melting, sedimentation and deformation of permafrost region highway during operation |
| CN111893832A (en) * | 2020-08-13 | 2020-11-06 | 哈尔滨工业大学 | Composite roadbed structure of reinforced hot-melt pile/reinforced gravel pile in degraded permafrost region |
| CN112176814A (en) * | 2020-10-12 | 2021-01-05 | 西藏大学 | Water accumulation preventing plateau asphalt highway and construction method |
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| CN103061224A (en) * | 2013-01-25 | 2013-04-24 | 谢时雳 | Method for thawing and strengthening permafrost foundations by quicklime-sand piles |
| CN103953023A (en) * | 2014-04-08 | 2014-07-30 | 珠海电力设计院有限公司 | Vacuum combined surcharge preloading method settlement volume measurement method |
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| CN107326765A (en) * | 2017-08-25 | 2017-11-07 | 中铁西北科学研究院有限公司 | Handle segregated frozen ground ground lime pile and its construction method |
| CN206625096U (en) * | 2017-01-20 | 2017-11-10 | 山西省交通科学研究院 | A kind of reinforced rubble frame structure subgrade strengthening system |
| CN107574814A (en) * | 2017-07-31 | 2018-01-12 | 中交天津港湾工程研究院有限公司 | A kind of basement process system and its construction method based on electrical heating drain bar |
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| CN102605758A (en) * | 2011-01-25 | 2012-07-25 | 同济大学 | Pile type reinforcement system |
| CN202836859U (en) * | 2012-10-10 | 2013-03-27 | 基康仪器(北京)有限公司 | Measurement device for frozen earth pore water pressure |
| CN103061224A (en) * | 2013-01-25 | 2013-04-24 | 谢时雳 | Method for thawing and strengthening permafrost foundations by quicklime-sand piles |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535106A (en) * | 2020-05-14 | 2020-08-14 | 哈尔滨工业大学 | Method for reducing melting, sedimentation and deformation of permafrost region highway during operation |
| CN111535106B (en) * | 2020-05-14 | 2021-12-10 | 哈尔滨工业大学 | Method for reducing melting, sedimentation and deformation of permafrost region highway during operation |
| CN111893832A (en) * | 2020-08-13 | 2020-11-06 | 哈尔滨工业大学 | Composite roadbed structure of reinforced hot-melt pile/reinforced gravel pile in degraded permafrost region |
| CN111893832B (en) * | 2020-08-13 | 2022-03-15 | 哈尔滨工业大学 | Composite roadbed structure of reinforced hot-melt pile/reinforced gravel pile in degraded permafrost region |
| CN112176814A (en) * | 2020-10-12 | 2021-01-05 | 西藏大学 | Water accumulation preventing plateau asphalt highway and construction method |
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Application publication date: 20191008 |
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