CN103388294B - Inverted T shape ventilation wide cut road structure - Google Patents
Inverted T shape ventilation wide cut road structure Download PDFInfo
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- CN103388294B CN103388294B CN201310325965.3A CN201310325965A CN103388294B CN 103388294 B CN103388294 B CN 103388294B CN 201310325965 A CN201310325965 A CN 201310325965A CN 103388294 B CN103388294 B CN 103388294B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 50
- 239000002184 metal Substances 0.000 claims description 8
- 238000007598 dipping method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 11
- 238000013461 design Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000006166 lysate Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to a kind of inverted T shape ventilation wide cut road structure, be made up of horizontal ventilation pipe, horizontal air door, vertical air chimney, vertical air door, tube connector and knoll.Horizontal ventilation pipe is connected with vertical air chimney by tube connector, and in inverted T shape, landfill is in banketing.Cold season, horizontal air door and vertical door opening, horizontal ventilation pipe and the vertical air chimney mouth of pipe have draught head, gas flows faster in horizontal ventilation pipe and vertical air chimney, thus strengthen inner air tube and outside air carries out energy exchange; Warm season, horizontal air door and vertical air door are all closed, and stop horizontal ventilation pipe and vertical air chimney and outside air to carry out energy exchange, reduce heat and enter roadbed.Effectively stored up by these two process implementation cold energy, reach the object maintaining the frozen earth roadbed base fixed of wide cut.
Description
Technical field
The present invention relates to a kind of road structure that can freeze to wide cut roadbed centre, Permafrost Area, be applicable to maintain Permafrost Area wide cut foundation of road bed and stablize.
Background technology
In Permafrost Area, the strong endothermic effect due to highway black asphalt pavement makes the degeneration of bottom ever-frozen ground more violent.Roadbed heat is melted subsidence problems and is also solved very well so far.Along with the progressively enforcement of " national expressway network planning ", wherein about 30% will pass through Frozen Area, 2% and pass through Permafrost Area, particularly Qinghai-Tibet speedway will pass through China Permafrost Area the most wide.The increase of express highway pavement width and the increase of heat absorption capacity, and the technical standard that speedway is higher, all can cause that the interaction between frozen soil and engineering is more strong, Frozen Soil Engineering Problems is more outstanding, and engineering construction is extremely difficult.For the construction of Permafrost Area high-grade highway, difference due to road structure, pavement conditions can cause the relative general subgrade of roadbed diabatic process to have greatly changed, its heat absorption intensity, thermal source distribution character, heat transfer process, Temperature Field variation tendency, and the evaluation of different engineering measure effectiveness under Highway Conditions, many problem in science such as optimal design are all urgently to be resolved hurrily.Chinese patent discloses " a kind of heat pipe-pipe-block rubble slope protection cooling heat insulating composite roadbed application in wide cut highway " (patent No.: ZL200910026926.6).But this measure difficulty of construction is large, and cost is high.Therefore, research and develop a kind of easy construction, cost relatively low, the road structure that can freeze to roadbed centre has important practice significance to the stability maintaining Permafrost Area wide cut roadbed.
Summary of the invention
In view of above-mentioned, the invention provides a kind of inverted T shape ventilation wide cut road structure, by laying horizontal ventilation pipe in roadbed, vertical air chimney is connected with tube connector, frame mode in inverted T shape, by being located at horizontal ventilation pipe, the horizontal air door of the vertical air chimney mouth of pipe and the closedown of vertical air door and unlatching, can freeze to wide cut roadbed centre, to maintain the stability of Permafrost Area wide cut roadbed.
Technical scheme of the present invention is:
A kind of inverted T shape ventilation wide cut road structure, by horizontal ventilation pipe, horizontal air door, vertical air chimney, vertical air door, tube connector and knoll composition.On natural surface, horizontal ventilation pipe is connected with vertical air chimney by tube connector, and become inverted T shape, landfill is in banketing; Wherein:
Horizontal ventilation pipe port is equipped with horizontal air door and is placed on the knoll on horizontal earth's surface; Horizontal air door is by 1# screw hole, 1# door-plate, 1# piston rod, and 1# piston, solution, 1# piston cylinder and 1# hinge form.Tube connector is nested in horizontal ventilation pipe, screw by 1# screw hole and horizontal ventilation pipe fastening, the mouth of pipe of horizontal ventilation pipe is outward-dipping, angle of inclination
be less than 95 °, the 1# door-plate of 1# gemel connection is equipped with in the bottom of pipe inner spout, and 1# door-plate is connected with the 1# piston rod in 1# piston cylinder, has 1# piston rod in 1# piston cylinder, 1# piston and solution;
Vertical air chimney is positioned in the middle of wide cut roadbed isolation strip, and tube connector is nested in vertical air chimney, and by 2# screw hole screw fastening; The mouth of pipe of vertical air chimney installs vertical air door; vertical air door is made up of piston cylinder, temperature detect switch (TDS), electromagnet, power supply, sheet metal, 2# door-plate, 2# hinge, tube connector; the vertical air chimney mouth of pipe is outward-dipping; angle of inclination is less than 95 °; the circuit of power supply, temperature detect switch (TDS) and electromagnet composition is equipped with on top in pipe, and 2# door-plate and the 2# piston cylinder of 2# gemel connection are equipped with in the top in pipe.Have 2# piston rod, 2# piston and solution in 2# piston cylinder, 2# piston rod is bending, its stroke about 1/4 times of inclination angle, and corresponding 2# door-plate major axis is long; Sheet metal is equipped with between 2# door-plate and 2# piston cylinder.
The beneficial effect of advantage of the present invention and generation is:
1, easy construction, quick, little to environmental perturbation; Repair and replacement are convenient.
2, new construction and existing engineering maintenance can use;
3, can at utmost cold energy in winter be collected and be stored in basis, to maintenance the stable of frozen soil basis, there is important function.
4, air chimney segmentation, threeway connecting mode design, construction can be made convenient.
5, arc tube connector can reduce the resistance of air in pipe, strengthens convection effects.
The thermal field problem of ventilated embankment is a fluid structurecoupling problem, can carry out numerical analysis, forecast its effect by field based on following energy-balance equation.
When the mouth of pipe of horizontal ventilation pipe is outward-dipping, angle of inclination
be less than 95 °, the design formulas promoting the thrust F that door-plate moves upward is:
F=G/n （1）
In formula (1): n is the position of door-plate center of gravity on oval door-plate long axis direction; G is gravity suffered by door-plate.
In piston cylinder, gas expansion needs the thrust F produced
1design formulas is as follows:
F
1=P*S+F (2)
Formula (2) P is on-the-spot atmospheric pressure, and S is that piston cross-section amasss.Plunger rod strokes S
1design formulas is:
S
1 ≥
(3)
In formula (3): d is door-plate long axis length,
for the angle at inclination angle.Need after lysate variations in temperature in piston cylinder discharge gas volume calculate formula be:
V=S*S
1 (4)
Lysate release volume design formulas:
(5)
In above formula (5):
for being F at pressure
1changes in solubility amount under condition after the rising of lysate temperature under former and later two states, V
0for the volume of solvent.
pressure F
1gas density under condition, its design formulas is:
(6)
In formula (6): T
0, P
0,
for the temperature under standard state, pressure and density; T
1, P
1for the temperature after change and pressure.
The minimum volume that comprehensive above-mentioned formulae discovery goes out gas-solvent is:
(7)
V
0under considering Site characteristic, panel material, rotational angle and solute characteristic condition, meet the minimum volume that door-plate can cut out completely.
Below, the present invention by panel material, rotational angle and magnetic signature, enables door-plate close calculating in air chimney completely:
The design formulas promoting the thrust F that door-plate moves upward is:
F=G/n （8）
In formula (8): n is the position of door-plate center of gravity on oval door-plate long axis direction; G is gravity suffered by door-plate.
Electromagnet needs the magnetic flux φ design formulas of generation as follows when holding sheet metal:
(9)
Formula (9) G is door-plate gravity, S
0for magnetic pole end sectional area, μ is magnetic capacity.Magnetic field intensity B calculating formula is:
(10)
Magnetic conductance G in air gap
bdesign formulas is:
(11)
Coil turn W calculating formula is:
(12)
Formula (12) U is coil power voltage; F is supply frequency.Current value I design formulas is:
(13)
Comprehensive above-mentioned formulae discovery goes out electromagnet coil minimum turn number:
(14)
W, under considering Site characteristic, panel material, rotational angle and magnetic signature condition, meets the minimum turn number that door-plate can cut out completely.
（15）
In formula: λ is Solid thermal conductivity, q is heat exchange amount, and h is local convective heat transfer coefficient; T
ffor fluid temperature (F.T.), T
wfor tube wall temperature.
Accompanying drawing explanation
Fig. 1 inverted T shape ventilation wide cut road structure cross-sectional drawing.
Fig. 2 is horizontal ventilation manage-style door schematic diagram.
Fig. 3 is vertical air chimney air door schematic diagram.
The common thermal field of wide cut roadbed after 20 years of operation of banketing of Fig. 4.
The thermal field of Fig. 5 inverted T shape ventilation wide cut roadbed after 20 years of operation.
Detailed description of the invention
For understanding the present invention better, be further described by following instance, but be not limitation of the invention.
As shown in Figure 1, a kind of inverted T shape ventilation wide cut road structure, is made up of horizontal ventilation pipe 2, horizontal air door 3, vertical air chimney 4, vertical air door 5, tube connector 6 and knoll 8.On natural surface 7, horizontal ventilation pipe 2 is connected with vertical air chimney 4 by tube connector 6, and in inverted T shape, landfill is banketing in 1.Roadbed Soil 3 thickness is 1.0 ~ 8 .0.
Horizontal ventilation pipe 2 port is equipped with horizontal air door 3, is placed on the knoll 8 of natural surface 7, and horizontal air door 3 is by screw hole 9, door-plate 11, piston rod 12, and piston 13, solution 14, piston cylinder 15 and hinge 16 form.Tube connector 6 is nested in horizontal ventilation pipe 2, and screw is fastening by 1# screw hole 9 and horizontal ventilation pipe 2, and the mouth of pipe of horizontal ventilation pipe 2 is outward-dipping, angle of inclination
10 are less than 95 °, and 1# door-plate 11,1# door-plate 11 ovalize of 1# hinge 16 connection is equipped with in the bottom of pipe inner spout.1# door-plate 11 is connected with the 1# piston rod 12 in 1# piston cylinder 15, has 1# piston rod 12,1# piston 13 and solution 14(to see Fig. 2 in 1# piston cylinder 15).
Vertical air chimney 4 is positioned in the middle of wide cut roadbed isolation strip, and tube connector 6 is nested in vertical air chimney 4, and by 2# screw hole 17 screw fastening; The port of vertical air chimney 4 is installed vertical air door 5 and is made up of piston cylinder 11, temperature detect switch (TDS) 19, electromagnet 20, power supply 18, sheet metal 22,2# door-plate 26,2# hinge 28 and tube connector 6; outward-dipping at vertical air chimney 4 mouth of pipe; angle of inclination 21 is less than 95 °; the circuit of power supply 18, temperature detect switch (TDS) 19 and electromagnet 20 composition is equipped with on top in pipe; 2# door-plate 26 and the 2# piston cylinder 25 of 2# hinge 27 connection are equipped with in top in pipe; 2# door-plate 26 ovalize.Have 2# piston rod 23,2# piston 24 and solution 14,2# piston rod 23 to be bending in 2# piston cylinder 25, its stroke about 1/4 times of inclination angle, corresponding 2# door-plate 26 for minor axis long; Be equipped with sheet metal 22(between 2# door-plate 26 and piston cylinder 25 and see Fig. 3).
Solute in above-mentioned solution 14 is soluble in water or for the ammonia of its solvent or for carbon dioxide;
According to Layer in Mohe Region climate characteristic and Distributive Characteristics of Frozen, the concrete size of the wide cut of inverted T shape ventilation shown in plan 1 road structure.Due to winter snow cover, avoid accumulated snow shutoff air door, horizontal air door 3 is apart from ground height 30cm.Vertical air chimney 4 is higher than road surface 30cm.Tube connector 6 elbow radius is 90cm.Horizontal ventilation pipe 2 and vertical air chimney 4 diameter are 16cm.Along roadbed direction, the spacing of horizontal ventilation pipe 2 is 32cm.Buried depth 1.8m.Knoll 8 is of a size of 40 x 40 x 40cm.
At cold season, temperature reduce, in the 1# piston cylinder 15 in horizontal air door 3 ammonia solvent degree reduce, air pressure reduce, 1# piston 13 moves downward, 1# door-plate 11 under Gravitative Loads, 1# piston rod 12 moves downward, and horizontal air door 3 is opened; Simultaneously, vertical air door 5 temperature detect switch (TDS) 19 cuts off power supply 18 in circuit, electromagnet 20 loses magnetism, 2# door-plate 26 is separated with the mouth of pipe, 2# door-plate 26 moves downward under Gravitative Loads, and simultaneously in 2# piston cylinder 25, the ammonia gas dissolves degree in ammoniacal liquor is large, in 2# piston cylinder 25, pressure is little, and 2# piston 24 drops to low level; Until and earth surface; Horizontal ventilation pipe 2 and vertical air chimney 4 mouth of pipe have draught head, horizontal ventilation pipe 2 and gas flows faster in vertical air chimney 4, thus acceleration inner air tube and outside air carry out convection energy exchange, realize roadbed refrigeration.Warm season, temperature raises, when temperature rises to gradually in the process of 8 DEG C from 0 DEG C, in piston cylinder 15 in horizontal air door 3, ammonia solvent degree reduces, and the ammonia in ammoniacal liquor is gradually in release plunger cylinder 15, and gas solubility reduces, the ammonia discharged increases the pressure in piston cylinder 15, promote piston 13 move upward, thereupon piston rod 12 promote door-plate 11 and move upward, until door-plate 11 and horizontal air door 3 mouth of pipe close, isolated extraneous hot air is to the interference on frozen soil basis; Meanwhile, temperature detect switch (TDS) 19 switches on power 18, and electromagnet 20 produces magnetic, holds sheet metal 22 on 2# door-plate 26, thus 2# door-plate 26 is closed with vertical air door 5 mouth of pipe.Horizontal air door 3 and vertical air door 5 are all closed, and stop horizontal ventilation pipe 2 and vertical air chimney 4 to carry out energy exchange with outside air, reduce heat and enter roadbed.Effectively stored up by these two process implementation cold energy, reach and maintain the stable object of foundation of road bed.
In order to confirm feasibility and the validity of technique scheme, the present invention utilizes numerical simulation tests method to carry out Simulation prediction research to common wide cut fill subgrade and inverted T shape ventilation wide cut roadbed temperature.On Ansys secondary developing platform basis, the enterprising airduct mouth warm season that works is closed and the secondary program development of opening winter, success achieve the closedown of ventilation mouth of pipe warm season and winter opening function simulation.Result shows: inverted T shape ventilation wide cut roadbed is after 20 years of operation, and its temperature is more much lower than the common wide cut roadbed that bankets of the same period.In figure: the lower 0 DEG C of isotherm of the common wide cut roadbed that bankets drops to 3.44m under earth's surface after roadbed 20 years of operation.Under roadbed, the temperature of the 15m degree of depth is higher than-0.5 DEG C (see Fig. 4); The lower 0 DEG C of isotherm of inverted T shape ventilation wide cut roadbed rises on earth's surface after roadbed 20 years of operation.0 DEG C of line 0.59m on natural surface of inverted T shape ventilation wide cut roadbed, frozen soil upper limit has been lifted in Roadbed Soil.Under the common wide cut roadbed that bankets, the temperature of the 15m degree of depth is higher than-0.5 DEG C (see Fig. 5).Under inverted T shape ventilation wide cut roadbed, the temperature of the 15m degree of depth is lower than-2.0 DEG C.Both comparing differences are remarkable.Illustrate that inverted T shape ventilation wide cut roadbed is ideal to the stablizing effect maintaining wide cut frozen earth roadbed.
Claims (1)
1. an inverted T shape ventilation wide cut road structure, by horizontal ventilation pipe (2), horizontal air door (3), vertical air chimney (4), vertical air door (5), tube connector (6) and knoll (8) composition, is characterized in that on natural surface (7), horizontal ventilation pipe (2) is connected with vertical air chimney (4) by tube connector (6), becomes inverted T shape; Horizontal air door (3) is apart from ground height 30cm, vertical air chimney (4) is higher than road surface 30cm, tube connector (6) elbow radius is 90cm, horizontal ventilation pipe (2) and vertical air chimney (4) diameter are 16cm, along roadbed direction, the spacing of horizontal ventilation pipe (2) is 32cm, buried depth 1.8m, and knoll (8) is of a size of 40 x 40 x 40cm; Wherein:
Horizontal ventilation pipe (2) port is equipped with horizontal air door (3) and is placed on the knoll (8) of horizontal earth's surface (7); Horizontal air door (3) is by 1# screw hole (9), 1# door-plate (11), 1# piston rod (12); 1# piston (13), solution (14), 1# piston cylinder (15) and 1# hinge (16) form; in tube connector (6) nested air chimney; screw is fastening by 1# screw hole (9) and horizontal ventilation pipe (2); the mouth of pipe of horizontal ventilation pipe (2) is outward-dipping, angle of inclination
q1(10) 95 ° are less than, the 1# door-plate (11) that 1# hinge (16) connects is equipped with in the bottom of pipe inner spout, 1# door-plate (11) is connected with the 1# piston rod (12) in 1# piston cylinder (15), 1# piston rod (12) is had, 1# piston (13) and solution (14) in 1# piston cylinder (15);
Vertical air chimney (4) is positioned in the middle of wide cut roadbed isolation strip, in the nested vertical air chimney (4) of tube connector (6), and by 2# screw hole (17) screw fastening; The mouth of pipe of vertical air chimney (4) installs vertical air door (5); vertical air door (5) is made up of 2# piston cylinder (25), temperature detect switch (TDS) (19), electromagnet (20), power supply (18), sheet metal (22), 2# door-plate (26), 2# hinge (27), tube connector (6); outward-dipping at vertical air chimney (4) mouth of pipe, angle of inclination q
2(21) 95 ° are less than; the circuit that power supply (18), temperature detect switch (TDS) (19) and electromagnet (20) form is equipped with on top in pipe; the 2# door-plate (26) and 2# piston cylinder (25) that 2# hinge (27) connects is equipped with on top in pipe; 2# piston rod (23), 2# piston (24) and solution (14) is had in 2# piston cylinder (25); 2# piston rod (23) is bending, and its stroke is 1/4 times of angle of inclination q
2(21) corresponding 2# door-plate (26) minor axis is long; Sheet metal (22) is equipped with between 2# door-plate (26) and 2# piston cylinder (25).
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| CN201310325965.3A CN103388294B (en) | 2013-07-31 | 2013-07-31 | Inverted T shape ventilation wide cut road structure |
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| CN201310325965.3A CN103388294B (en) | 2013-07-31 | 2013-07-31 | Inverted T shape ventilation wide cut road structure |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863117B (en) * | 2014-02-24 | 2016-09-07 | 中国科学院寒区旱区环境与工程研究所 | Buried thermal pipeline ever-frozen ground basic refrigerant structure |
| CN107034756A (en) * | 2016-02-03 | 2017-08-11 | 中国科学院寒区旱区环境与工程研究所 | A kind of frozen earth roadbed structure of natural convection ventilation pipe |
| CN107201701B (en) * | 2016-03-17 | 2023-07-07 | 中国科学院西北生态环境资源研究院 | Full-wall ventilation type frozen soil ventilation embankment |
| CN110004784B (en) * | 2019-04-22 | 2021-08-10 | 王长华 | Roadbed structure next to highway pier |
| CN111021434B (en) * | 2019-12-13 | 2021-10-01 | 中国一冶集团有限公司 | Anti-melting test method and system for frozen soil area |
| CN112342856B (en) * | 2020-10-27 | 2022-04-15 | 东南大学 | Prefabricated reinforced concrete hollow slab pavement for permafrost region and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045325A (en) * | 1990-04-23 | 1992-01-09 | Hakko Co Ltd | Civil engineering work method using foaming resin |
| JPH08199553A (en) * | 1995-01-30 | 1996-08-06 | Seiken:Kk | Development method of flow area in frozen soil in freezing method |
| CN1556284A (en) * | 2004-01-08 | 2004-12-22 | 中国科学院寒区旱区环境与工程研究所 | Composite temperature controlled ventilation roadbed |
| CN201221044Y (en) * | 2008-06-12 | 2009-04-15 | 中国科学院寒区旱区环境与工程研究所 | Reverse T-shaped efficient ventiduct roadbed |
| RU2379405C1 (en) * | 2008-11-07 | 2010-01-20 | Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" | Embankment on frozen soil |
| CN203429522U (en) * | 2013-07-31 | 2014-02-12 | 中国科学院寒区旱区环境与工程研究所 | Wide frozen earth roadbed structure |
-
2013
- 2013-07-31 CN CN201310325965.3A patent/CN103388294B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045325A (en) * | 1990-04-23 | 1992-01-09 | Hakko Co Ltd | Civil engineering work method using foaming resin |
| JPH08199553A (en) * | 1995-01-30 | 1996-08-06 | Seiken:Kk | Development method of flow area in frozen soil in freezing method |
| CN1556284A (en) * | 2004-01-08 | 2004-12-22 | 中国科学院寒区旱区环境与工程研究所 | Composite temperature controlled ventilation roadbed |
| CN201221044Y (en) * | 2008-06-12 | 2009-04-15 | 中国科学院寒区旱区环境与工程研究所 | Reverse T-shaped efficient ventiduct roadbed |
| RU2379405C1 (en) * | 2008-11-07 | 2010-01-20 | Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" | Embankment on frozen soil |
| CN203429522U (en) * | 2013-07-31 | 2014-02-12 | 中国科学院寒区旱区环境与工程研究所 | Wide frozen earth roadbed structure |
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