CN105887605B - A kind of device based on stress relief method roadbed anti-freeze expansion thaw collapse - Google Patents
A kind of device based on stress relief method roadbed anti-freeze expansion thaw collapse Download PDFInfo
- Publication number
- CN105887605B CN105887605B CN201610293321.4A CN201610293321A CN105887605B CN 105887605 B CN105887605 B CN 105887605B CN 201610293321 A CN201610293321 A CN 201610293321A CN 105887605 B CN105887605 B CN 105887605B
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- CN
- China
- Prior art keywords
- roadbed
- armored concrete
- portable plate
- frost
- soil
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- 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.)
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Classifications
-
- 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
Abstract
The present invention relates to the device of existing railway roadbed anti-freeze expansion thaw collapse, the device of more particularly to a kind of existing railway anti-freeze expansion thaw collapse for northern China Frozen Area.The device is made up of armored concrete casing, self-feeding anchor pile, armored concrete portable plate and groups of springs device, and wherein self-feeding anchor pile prevents that device swells together with frozen soil during body frost heaving, and miscellaneous part function is to prevent roadbed frost damage thaw collapse.When freezing soil, frost-heave force is produced, promotes portable plate to move inward, while groups of springs accumulation of energy, discharge frost-heave force, you can roadbed frost damage amount is reduced or eliminated；When the soil body melts, volume-diminished, rigidity weakens, and the spring of accumulation of energy will promote portable plate to be displaced outwardly, extrusion soil, increases subgrade stiffness, reduces roadbed expansion amount.The present apparatus have the characteristics that it is cheap, can on-site consolidation, construction is simple, good endurance, can be recycled, safeguard and change convenient, had broad application prospects in terms of existing roadbed freeze-harm is prevented and treated.
Description
Technical field
It is more particularly to a kind of to be directed to northern China seasonal frozen ground the present invention relates to railway bed anti-freeze expansion and the device of thaw collapse
The existing railway anti-freeze expansion in area and the device of thaw collapse.
Background technology
The frozen soil in China can be divided into frost zone and ever-frozen ground, and wherein frost zone accounts for the one of China territory area
More than half, ever-frozen ground accounts for the 1/5 of national territory area.In seasonal frozen soil region, permafrost hazards can cause road bed when occurring
Differential frost heave and melt it is sunken, when serious, entail dangers to traffic safety.
At present, the major measure of existing railway roadbed prevention frost damage has：Cushion, physical-chemical process, draining water proof method and
Frost heave board is along slope method etc..Cushion is to replace existing roadbed frost damage soil with the soil of the non-frost heaves such as coarse sand, gravelly sand, sandy gravel,
Roadbed not frost heave can be ensured by changing after filling out, but this method working face is big, and time length, process is more, to cut off traffic, in actual freeze injury
Seldom used in training works.Physical-chemical process is that Cucumber (such as Nacl) is added in the soil body, changes grogs and water
Between interaction, the water translocation in the soil body and its freezing point is changed, so as to slacken soil frost heave, this method construction
Simplicity, but need annual autumn operation, expense is larger, and the retention time is not grown, and environment, rail and fastener is polluted and rotten
Erosion.Draining water proof method be lowering of watertable, reduce season active layer in the range of water content of soil, separate water nourishment source
With the method for excluding surface water, this method is difficult that the moisture in roadbed is discharged in actual applications, and for cutting location
Freeze injury can not realize corresponding function, therefore be unable to reach promising result.Frost heave board is in roadbed frost damage, in steel along slope method
Bamboo clappers is encased inside between rail and sleeper or rubber mat plate is carried out along slope, and must be adhered to the operation risen with pad during freeze injury goes up
Principle, frozen soil withdraw from backing plate along slope again when melting, and must adhere to during freeze injury falls after rise with falling with the operation principle removed, this method
Operation is repeated, in place, is once removed on earth it is difficult to once pad, workload is very big, wastes time and energy.
Preferably to solve the problems, such as the existing roadbed freeze-harm in Frozen Area, this of this proposition is based on stress relief method
The device of roadbed anti-freeze expansion thaw collapse is by armored concrete casing, armored concrete portable plate, groups of springs device and self-advancing type anchor
Bar forms.The device intensity is high, rigidity is big, and requirement of the roadbed to bearing capacity can be met by being embedded in roadbed.During frost heave, road
Base, which bankets, produces frost-heave force, frost-heave force promotion portable plate occurred level displacement, the frost-heave force in removal roadbed, road is reduced or eliminated
Base frost heaving amount, while groups of springs device accumulation of energy；During thawing, portable plate surrounding soil rigidity reduces, the energy that groups of springs device stores
Promote portable plate in turn again, portable plate extruding subgrade soil, reduce roadbed expansion amount.So repeatedly, in several freezing and thawing cycles
It is interior, the frozen swell and melt settlement harm of frozen soil can be reduced or eliminated well., should compared with other processing subgrade soil frozen swell and melt settlement methods
Device can substantially reduce roadbed maintenance load, reduce investment outlay, and have critically important engineering application value and social benefit, solving
Certainly had broad application prospects in terms of the roadbed freeze-harm of Frozen Area.
The content of the invention
The problem of for Frozen Area railway bed freeze injury, this proposes that one kind is based on stress relief method roadbed anti-freeze expansion
Device.
The present invention with lower part by being formed：Self-feeding anchor pile, armored concrete casing, armored concrete portable plate, spring
Group device and tetrafluoro plate.
The function of the device critical piece is：Two self-feeding anchor piles are devised with armored concrete casing by bolt to connect
Connect, can prevent from driving the present apparatus to swell together during subgrade soil frost heave, there is resistance to plucking；Groups of springs device uses sleeve die
Formula, it can prevent spring from tilting, sliding or block, the stiffness coefficient and arrangement form of spring can be according to the subgrade soils of locality actual measurement
Maximum frost-heave force and distribution characteristics determine, and make each spring stress equal, ensure that translation displacements only occur in device for portable plate；
Armored concrete portable plate bears frost-heave force and the active force of groups of springs, should there is certain strength and stiffness, when prefabricated according to
Hole position is reserved in the position of groups of springs device, is easy to in-site installation, fixed spring group device, should make spring during fixed spring group device
There is certain pre compressed magnitude, to offset active earth pressure caused by Roadbed Soil.One of effect of tetrafluoro plate is to prevent activity
Freeze between plate and box bottom, side plate, and reduce frictional force when portable plate moves, another effect is to prevent portable plate forward
When mobile, soil particle enters casing, causes portable plate to be unable to Self-resetting, reduces its operating efficiency.
The solution have the advantages that：When body frost heaving, native reclaimed water freezing and expansion, frozen soil volume accordingly increases, and produces
Frost-heave force, armored concrete portable plate will be promoted to move inward, discharge frost-heave force, while groups of springs accumulation of energy, be reduced or eliminated
The frost heaving amount of roadbed；When the soil body melts, ice-out Cheng Shui in soil, soil body volume-diminished, rigidity decrease, the spring assembling of accumulation of energy
Putting will promote armored concrete portable plate to be displaced outwardly, extrusion soil, increase subgrade soil rigidity, reduce melting for roadbed soil layer
Heavy deformation.
It is an advantage of the invention that：
(1) can on-site consolidation, convenient construction.The present apparatus is bolted on-site consolidation and formed, and transports and easy for construction；
Utilize permanent way maintenance skylight, you can construction；
(2) good endurance, investment reduction.The present apparatus is recycled work once burying in place, time saving and energy saving；And reduce road
Base freeze injury maintenance workload, substantially reduces maintenance cost；
(3) safeguard and change conveniently.If after failure of apparatus, can change in time can recover effect；Practicality is good, operation side
Just it is, cheap, application easy to spread.
(4) can be embedded using manually digging pit, it is not required to big machinery and the activity duration is short.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is layout drawing of the apparatus of the present invention along roadbed longitudinal direction；
Fig. 2 is layout drawing of the apparatus of the present invention on subgrade cross section；
Fig. 3 is apparatus of the present invention primary structure top plan view；
Fig. 4 is apparatus of the present invention primary structure main view profile；
Fig. 5 is apparatus of the present invention primary structure side cutaway view；
Fig. 6 is apparatus of the present invention spring group parts front view and top view；
Fig. 7 is apparatus of the present invention primary structure arrangement of reinforcement.
In figure：1. self-feeding anchor pile, 2. armored concrete casings, 3. box bottoms, 4. prepared screw-bolt holes, 5. case-sides
Plate, 6. roof box, 7. pre-embedded bolts, 8. tetrafluoro plates, 9. tetrafluoro plate risers, 10. armored concrete portable plates, 11. groups of springs
Device, 12. threaded guide rods, 13. springs, 14. steel bushings.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
Step 1：Preparation of construction.Subgrade soils parameter (including the frost-heave force size in freeze injury location is determined by field test
And distribution), position and the spring rate for determining groups of springs device 11 are calculated according to parameters obtained；The prefabricated each structure of the present apparatus
Part, prefabricated component include roof box 6, the internal box side 5 for pasting tetrafluoro plate 8 and box bottom 3, side and paste tetrafluoro
Armored concrete portable plate 10, the steel bushing 14 being embedded in box side 5 of tetrafluoro plate 8, casing are pasted in plate riser 9 and bottom
Bottom plate 3 is prefabricated integral with box side 5；Between the present apparatus is disposed longitudinally on two sleepers along roadbed, optimal spacing should basis
The frost heaving amount of local subgrade soil, thaw collapse amount are determined；The other engineering time should be chosen in the fall (before the soil body does not freeze).
Step 2：Excavate pit.According to the time of skylight point, construct, pushed aside between sleeper on existing railway roadbed
Railway ballast, excavated out between two sleepers and present apparatus size identical pit.
Step 3：Self-feeding anchor pile 1 is set.By the corresponding place in the position of box bottom prepared screw-bolt hole 4, by two from
Feeding anchor pile 1 is squeezed into ground, and driving depth should freeze below line 300cm in locality.
Step 4：On-site consolidation.Spring 13 is enclosed on steel bushing 14, armored concrete portable plate 10 is then put into steel
In reinforced concrete casing 2, threaded guide rod 12 is penetrated into steel bushing 14 in the preformed hole of armored concrete portable plate 10
In, and threaded guide rod 12 is fixed on armored concrete portable plate 10 with nut.
Step 5：Place armored concrete casing 2.Assembled good armored concrete casing 2 is put into the pit dug,
Prepared screw-bolt hole 4 on box bottom 3 will be directed at placement with self-feeding anchor pile 1, and be fixed with nut.
Step 6：Installation casing top plate 6, recover circuit original appearance.Roof box 6 is placed, passes through pre-buried spiral shell on box side 5
Roof box 6 is fixed bolt 7, then backfills pit and is compacted, recover railway ballast, construction finishes.
Claims (1)
1. a kind of device based on stress relief method roadbed anti-freeze expansion thaw collapse, device is by self-feeding anchor pile（1）, reinforced concrete box
Body（2）, armored concrete portable plate（10）, groups of springs device（11）And tetrafluoro plate（8）, tetrafluoro plate riser（9）Composition, it is special
Sign is：Self-feeding anchor pile（1）Driving depth freezes below line 300cm in locality, and passes through bolt and box bottom（3）Phase
Even, armored concrete portable plate（10）With armored concrete casing（2）Between pass through groups of springs device（11）It is connected, in casing
Bottom plate（3）, box side（5）And armored concrete portable plate（10）Tetrafluoro plate is pasted on bottom surface（8）, armored concrete portable plate
（10）Paste two tetrafluoro plate risers in front（9）；Box bottom（3）With box side（5）It is prefabricated integral, roof box（6）
Pass through box side（5）Upper pre-embedded bolt（7）Connection composition armored concrete casing（2）；Box side is fixed on when prefabricated（5）
On steel bushing（14）, spring（13）And it is fixed on armored concrete portable plate with nut（10）On threaded guide rod
（12）Constitute groups of springs device（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293321.4A CN105887605B (en) | 2016-05-06 | 2016-05-06 | A kind of device based on stress relief method roadbed anti-freeze expansion thaw collapse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293321.4A CN105887605B (en) | 2016-05-06 | 2016-05-06 | A kind of device based on stress relief method roadbed anti-freeze expansion thaw collapse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105887605A CN105887605A (en) | 2016-08-24 |
| CN105887605B true CN105887605B (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610293321.4A Expired - Fee Related CN105887605B (en) | 2016-05-06 | 2016-05-06 | A kind of device based on stress relief method roadbed anti-freeze expansion thaw collapse |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458062B (en) * | 2020-04-10 | 2022-03-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Instrument for automatically measuring three-dimensional frost heaving force of channel and measuring and mounting method thereof |
| CN111395274A (en) * | 2020-04-24 | 2020-07-10 | 中水北方勘测设计研究有限责任公司 | Anti-frost-heaving method and anti-frost-heaving assembly of measurement and control integrated gate |
| CN112376328B (en) * | 2020-05-28 | 2022-07-22 | 兰州交通大学 | Roadbed freeze injury treatment device with vertical subareas gradually depressurized |
| CN112301805B (en) * | 2020-05-28 | 2022-07-22 | 兰州交通大学 | Roadbed freezing injury treatment device with horizontal bidirectional layered decompression |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2864078B2 (en) * | 1992-09-07 | 1999-03-03 | 信越化学工業株式会社 | Road laying method |
| CN100419160C (en) * | 2002-11-27 | 2008-09-17 | 中国科学院寒区旱区环境与工程研究所 | Thermal-insulating cold-conductive device for protecting frozen soil |
| CN2633953Y (en) * | 2003-04-02 | 2004-08-18 | 中国科学院寒区旱区环境与工程研究所 | Automatic temperature control ventilator for road bed |
| DE102005057380B4 (en) * | 2005-11-30 | 2009-12-03 | Walter Sobolewski | Tubular, hollow, solid track carrier |
| CN201738208U (en) * | 2010-06-25 | 2011-02-09 | 中交第二公路勘察设计研究院有限公司 | Roadbed structure for preventing road damage in seasonally frozen ground area |
| RU2487210C1 (en) * | 2012-01-10 | 2013-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) | Device for preparation of foundations of ice roads on dried swamps |
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| CN105887605A (en) | 2016-08-24 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Xuening Inventor after: Wang Bolin Inventor after: Wu Peiyuan Inventor after: Wang Xu Inventor after: Zhang Yanjie Inventor after: Jiang Daijun Inventor before: Ma Xuening Inventor before: Wu Peiyuan Inventor before: Wang Xu Inventor before: Zhang Yanjie Inventor before: Jiang Daijun Inventor before: Wang Bolin |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20200506 |