CN205557217U - Press from both sides formula automatic control ventilation tube roadbed structure between ventilation plumber block stone - Google Patents

Press from both sides formula automatic control ventilation tube roadbed structure between ventilation plumber block stone Download PDF

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Publication number
CN205557217U
CN205557217U CN201620205095.5U CN201620205095U CN205557217U CN 205557217 U CN205557217 U CN 205557217U CN 201620205095 U CN201620205095 U CN 201620205095U CN 205557217 U CN205557217 U CN 205557217U
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block stone
ventilation pipe
ventilation
automatic control
horizontal ventilation
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CN201620205095.5U
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Chinese (zh)
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袁昌
俞祁浩
王新斌
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Northwest Institute of Eco Environment and Resources of CAS
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Cold and Arid Regions Environmental and Engineering Research Institute of CAS
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Abstract

The utility model relates to a press from both sides formula automatic control ventilation tube roadbed structure between ventilation plumber block stone, this roadbed structure moves towards to set up the communicating horizontal ventilation pipe with the external world including the perpendicular road bed of establishing in embankment filled soil in edge. The one end or the automatic control by temperature change air door of both ends mouth of pipe installation of horizontal ventilation pipe, it is adjacent lay a stone layer between the horizontal ventilation pipe, horizontal ventilation pipe with insulation material is laid to the continuous level in top on piece stone layer. The utility model discloses effectively combine to propose new roadbed structure pattern with heat -conduction, convection current regulation and control measure, realize carrying out whole, quick, even plane formula cooling to the road bed lower part soil body, effectively solve permafrost region frozen soil roadbed, especially the highway road bed by lower part frozen soil melt, the upper limit descends, not uniform settlement etc. Cause road bed calamity problem, guarantee the long term stability of road engineering operation.

Description

Clip automatic control air pipeline based structures between a kind of ventilation plumber block stone
Technical field
This utility model relates to frozen soil engineering technical field, particularly relates to clip automatic control ventilation duct between a kind of ventilation plumber block stone Road structure.
Background technology
In Permafrost Areas such as China Qinghai-Tibet Platean, northeast, by long-term evolution, develop and change, define thickness and reach Several meters, even tens meters, each rear increasing ground ice having form.Along with change, the impact of artificial engineering activity of climatic environment, lead Cause frozen soil and ground ice is degenerated and melts, thus cause the generation of various engineering project disaster, to various Important Project structural stability Have a negative impact.
By use protection of permafrost engineering measure, active cooling frozen soil basis, be to ensure that frozen soil engineering long-term safety operation, Stable critical path.In these measures, the heat convection measure of Effective Regulation frozen soil engineering, is a kind of protection of permafrost basis Important engineering measure.Such measure is by effectively facilitating basis and external environment under winter or cool night temperatures environmental condition Heat transfer process, effectively suppresses the heat transfer process on basis under warm season or daytime high ambient conditions, thus reaches cold energy in roadbed Portion constantly stores, the purpose that constantly reduction, stability of foundation constantly strengthen of frozen soil ground temperature.
In the face of the appearance of country's " 13 " strategical planning, Qinghai-Tibet highway will be built, but, highway is with general Accessible by road, railway is compared, and Frozen soil problems will be the most prominent.There are some researches show (Yu Qihao etc. China Permafrost Area is at a high speed Constructing highway key issue research. Chinese science (science of technology), 2014,44(4): 425 ~ 432), due to dark-coloured pavement Strong endothermic, bituminous paving water proof and stop the impact of moisture evaporative heat loss so that the same terms is got down the highway the heat absorption of roadbed Intensity is more than 3 times of railway, and the heat absorbed, and is concentrated mainly on the centre of embankment, and is difficult to dispel the heat to frozen soil around. And highway is compared with common road, more exacerbate the appearance of this kind of phenomenon.When highway subgrade width increase about 1 times, road The heat absorption intensity increase of dike bottom surface about 0.6 times, roadbed heat absorption is gathered in the centre of roadbed further, thus produces brighter " the heat build-up effect " shown, will cause frozen soil more quickly to be degenerated.
In the face of higher technical standard, broader highway pavement, the heat effect between highway and frozen soil is more significantly, Building highway in Permafrost Area will be in the face of the most prominent Frozen Soil Engineering Problems and build technical barrier.Due to heat transfer The radical change of the aspect such as approach, intensity, the successful experience obtained by Qinghai-Tibet Railway etc., advanced technology are difficult in Qinghai-Tibet at a high speed Highway construction is directly applied.
Ventilation duct is set inside road foundation so that produces heat convection between roadbed inside and ambient air and makees With, in time the heat that roadbed absorbs is shed in time, thus reach the purpose of cooling.Therefore, ventilated embankment is Permafrost Area The important engineering measure of one of protection of permafrost.But, due to the difference of structural shape, ventilation duct tube wall heat exchange property difference all The overall heat exchange usefulness of roadbed will be produced material impact.Thus, it just becomes the emphasis of many technical concerns and research and development.Although Correlation technique has certain novelty, but remains in actual applications in different problems, it is still necessary to research and develop.Prior art The problem existed is mainly:
" protection of permafrost heat insulation and heat control device " (Yu Qihao, 200420041458.3), although be mounted with certainly at the ventilation mouth of pipe Dynamic temperature Ore-controlling Role, it is possible to the cooling usefulness of intensified ventilation pipe, arranges insulation material on ventilation duct, it is possible to play certain guarantor Cold, heat-blocking action, but this regulation subgrade is still the interval of vertical roadbed, wire type cooling mode to bottom cooling soil body mode, Not only can cause the fluctuating that Upper Limit of Permafrost, Temperature Field move towards along highway, uneven change, and cause crevice of roadbed etc. potential The generation of engineering disease, and, cooling usefulness is still difficult to meet actual requirement of engineering.Due to the existence of these problems, cause this The measure of kind is difficult to meet frozen soil highway entirety, uniform, the particular/special requirement of temperature with high efficiency.
" based on XPS warming plate and ventilation duct composite road bed " (Wang Tiequan, 201420016447.3), does not only belong to wire type Cooling method, simultaneously because the material impact of warm season ventilation duct heat transfer process so that the overall efficiency of this kind of measure year circulation is big Width declines, and is even difficult to lower the temperature, and these all require to greatly differ from each other from the technology of frozen soil highway ground temperature regulation and control.
Therefore, build the actual requirement of engineering of highway for meeting Permafrost Area, in the face of ground temperature is overall, uniformly, have The particular/special requirement of effect regulation and control, constantly carries out technological innovation, progress, is the critical path solving engineering roadblock.
Utility model content
Technical problem to be solved in the utility model is to provide one can carry out entirety, all frozen earth roadbed to highway Clip automatic control air pipeline based structures between the ventilation plumber block stone that even, plane formula fast cooling, convection current storage are cold.
For solving the problems referred to above, clip automatic control air pipeline base junction between a kind of ventilation plumber block stone described in the utility model Structure, it is characterised in that: this road structure includes that be located in embankment filled soil arranges, along vertical road-trend, the water communicated with the external world Flat ventilation duct;The one or both ends mouth of pipe of described horizontal ventilation pipe installs automatic temperature-controlled air door;Adjacent described horizontal ventilation pipe it Between lay block stone layer;The continuous over level of described horizontal ventilation pipe and described block stone layer lays insulation material.
A diameter of 0.3 ~ 0.8 m of described horizontal ventilation pipe, its adjacent tubes axis spacing is 2 ~ 8 times of calibers, its tube hub Axis is 0.5 ~ 1.5 m away from natural surface.
It is-5 DEG C ~ 5 DEG C that the temperature of described automatic temperature-controlled air door controls threshold scope.
Described block stone layer is block stone or block rubble, and its thickness is consistent with the external diameter of described horizontal ventilation pipe.
The thickness of described insulation material is 10 ~ 50 cm, and its burial place is away from described horizontal ventilation pipe top 0.0 ~ 1.0 m.
This utility model compared with prior art has the advantage that
1, plane, the realization of the novel cooling method of monoblock type.
Common ventilation pipe foundation cooling method is surrounding soil to be carried out wire type cooling, so at roadbed along ventilation duct Walk upwards to show the distribution of more irregular ground temperature, heaving of the sea problem in road surface easily occurs.And this utility model is owing to ventilating The existence of block stone layer bulk convection heat exchange mode between pipe, pipe so that the cooling of roadbed can be carried out with plane, entirety, solves at all Highway, particularly highway are overall, a key technology difficult problem for uniform decrease in temperature.
2, being greatly improved of usefulness of lowering the temperature.
Due to cross-ventilation, heat exchange, the widening of cooling passage, cooling usefulness is improved to a great extent;Simultaneously by In the closedown of warm season air door, and the double thermal insulation usefulness of insulation material, ventilation duct and block stone layer, the heat all making warm season is difficult To enter the inside of roadbed, winter, the cold energy of storage was at utmost protected.Therefore, by heat insulation pair of winter cooling, warm season The lifting of weight usefulness and combination, can be substantially improved cooling usefulness of the present utility model.
3, being significantly increased of subgrade stability.
Secondary engineering disease under engineering measure effect in the past is mainly derived from Temperature Field, putting down of particularly 0 DEG C of contour Whole property, uniformity.Therefore, for high-grade highway, the planarization of 0 DEG C of contour change procedure in temperature-fall period, uniformity are straight Connect the stability affecting frozen earth roadbed engineering.Due to this utility model cooling, heat insulation dual planarization, all make Temperature Field Stationarity is greatly improved.The lifting of usefulness simultaneously because lower the temperature, frozen soil underlying strength strengthen accordingly, all make subgrade stability big Width increases.
4, engineering structure simply, effectively shortens construction period.
Compared with the engineering measure such as compound with block-stone embankment or block stone and ventilation duct, this utility model is only ventilation duct, block stone The laying of engineering building materials of the single aspect of layer, the insulation material on its upper strata lays also relative ease, and these all make engineering construction Cycle significantly shortens.
5, engineering construction cost is effectively reduced.
Due to the restriction of Qinghai-Tibet Platean fragile ecological environment, required block stone needs individually exploitation, long-distance transportation, and material becomes This accounting in whole engineering is the biggest.Reduce the use of stone material in a large number due to this utility model, its thickness is only conventional block stone The 1/3 ~ 1/2 of layer thickness, the ventilation duct of increase, insulation material, the relative inexpensiveness of air door, therefore, can effectively reduce work The integrated cost of Cheng Jianshe.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
Fig. 1 is cross-sectional configuration schematic diagram of the present utility model.
Fig. 2 is longitudinal plane structure schematic diagram of the present utility model.
Fig. 3 is conventional art and roadbed bottom of the present utility model frozen soil upper limit changes over curve comparison figure.
Fig. 4 is conventional art cooling initial stage ground temperature profile.
Fig. 5 is this utility model cooling initial stage ground temperature profile.
In figure: 1-Roadbed Soil 2-insulation material 3-horizontal ventilation pipe 4-automatic temperature-controlled air door 5-block stone layer 6-days So earth's surface.
Detailed description of the invention
As shown in Figure 1 and Figure 2, clip automatic control air pipeline based structures between a kind of ventilation plumber block stone, this road structure includes setting Arranging and the extraneous horizontal ventilation pipe 3 communicated along vertical road-trend in embankment filled soil 1.One end of horizontal ventilation pipe 3 or The two ends mouth of pipe installs automatic temperature-controlled air door 4;Block stone layer 5 is laid between adjacent level ventilation duct 3;Horizontal ventilation pipe 3 and block stone layer 5 Continuous over level lay insulation material 2.
Wherein:
A diameter of 0.3 ~ 0.8 m of horizontal ventilation pipe 3, its adjacent tubes axis spacing is 2 ~ 8 times of calibers, its tube hub axis It is 0.5 ~ 1.5 m away from natural surface 6.
It is-5 DEG C ~ 5 DEG C that the temperature of automatic temperature-controlled air door 4 controls threshold scope.Automatic temperature-controlled air door 4 can according to ambient air temperature and Time changes, and automatically turns on or closes, and closes higher than temperature control threshold air door, less than temperature control threshold door opening.
Block stone layer 5 is block stone or block rubble, and its thickness is consistent with the external diameter of horizontal ventilation pipe 3.
Insulation material 2 refers to one or several combinations in polystyrene board, polyurethane sheet, injection polystyrene board, Its thickness is 10 ~ 50 cm, and its burial place is away from horizontal ventilation pipe 3 top 0.0 ~ 1.0 m.
Utility model works principle:
This be provided with warming plate, the automatic control air pipeline based structures of block stone layer is carried out comprehensively in terms of convection current and conduction of heat two Regulation and control, its work process is:
Under winter low temperature environmental condition, the automatic temperature-controlled air door of horizontal ventilation pipe 34 automatically opens up, and embankment and the external world pass through water Flat ventilation duct 3 carries out heat convection, lowers the temperature the soil body around horizontal ventilation pipe 3.Meanwhile, horizontal ventilation pipe 3 it Between block stone layer due to the existence of big space condition, under the temperature difference, different atmospheric density promote, in block stone layer 5, there is also nature pair Stream heat transfer process.Thus cause the formation of overall heat exchange aspect, horizontal ventilation pipe 3 heat exchanger efficiency is not only substantially improved, and right Embankment achieves and carries out entirety, uniform, the purpose of temperature with high efficiency.
Under warm season high ambient conditions, the automatic temperature-controlled air door of horizontal ventilation pipe 34 is automatically switched off, and thus stops embankment with outer The heat transfer process on boundary, effectively stops the intrusion of warm season heat;Secondly as the heat of highway warm season is mainly derived from dark-coloured pavement Heat absorption, first, insulation material 2 effectively prevents the biography down of top heat, secondly as the heat conductivility of air is the lowest, The block stone layer 5 of large hole porosity and horizontal ventilation pipe 3 prevent the biography down of top heat further.The most at utmost save Winter accumulation cold energy and frozen soils temperature is maintained relatively low level.
Thus, this utility model is by strengthening the cooling usefulness of horizontal ventilation duct 3, and utilizes insulation material 2 to realize thermal resistance Cool storage function, utilizes thermal convection current and the one-way heat conduction performance of block stone layer 5, it is achieved roadbed bottom frozen soil is carried out entirety, plane formula Cooling, improves frozen soil upper limit, prevents and treats frozen earth roadbed generation road surface differential settlement class disaster problem.
The concrete application example of this utility model 1:
(1) on the natural surface of compacting, railway embankment bankets 1, the water that setting is vertical with road-trend Roadbed Soil 1 in Flat ventilation duct 3, a diameter of 0.6 m of horizontal ventilation pipe 3, the spacing between adjacent level ventilation duct 3 central axis is 2 m, its Tube hub axis is 1 m away from natural surface 6.
(2) the two ends mouth of pipe at horizontal ventilation pipe 3 installs automatic temperature-controlled air door 4, automatic temperature-controlled air door 4 temperature control threshold It it is 0 DEG C.
(3) laying block stone layer 5 between adjacent level ventilation duct 3, this layer thickness is 0.6 m, position and horizontal ventilation pipe 3 Concordant.
(4) lay the thick XPS warming plate 2 of 10 cm at horizontal ventilation pipe 3 upper level.
For verifying the controlling performance of this utility model embankment structure, in conjunction with above-mentioned road structure, at High Temperature Permafrost district environment Under the conditions of the cooling-down effect of this utility model road structure and prior art (ventilation duct insulation material is composite road bed) are carried out Numerical simulation calculates and contrast.From result of calculation, this utility model relatively conventional art has prominent advance.Wherein:
The most prominent cooling usefulness, effectively promotes the holding force intensity of frozen soil foundation, it is ensured that highway is frozen earth roadbed Long-time stability.Frozen earth roadbed sedimentation and deformation is relevant with frozen soil upper limit, as it is shown on figure 3, the upper limit of the present utility model is with the time limit (ventilation duct insulation material is composite road bed, in figure to completely solve prior art for variation tendency (" this utility model " curve in figure) " prior art " curve) upper limit with running the phenomenon that constantly declines of the time limit, under roadbed frozen soil upper limit the 2nd year put into operation it After will be stably held at former natural surface.Correspondingly, the holding force intensity of frozen soil foundation will be improved significantly, frozen soil road Base Settlement diseases problem will obtain according to solution, it can be ensured that the long-time stability that highway is frozen earth roadbed.
(2) it is effectively improved the distribution of frozen earth roadbed Temperature Field, changes the cooling method of conventional regulation measure, fundamentally solve A build difficult problem for highway.Fig. 4, Fig. 5 are regulation subgrade cooling initial stage ground temperature profile, by Fig. 4, Fig. 50 DEG C of curve of ground temperature It can be seen that entirely different along the linear cooling method of ventilation duct with prior art (ventilation duct insulation material is composite road bed, Fig. 4), This utility model (Fig. 5) is cooling overall, uniform, facial to the bottom soil body, and elimination roadbed is drawn by this due to Temperature Field out-of-flatness The road surface inhomogeneous deformation risen, fluctuating problem in road surface on basic solution road-trend, meet the frozen earth roadbed planarization of highway High standard.

Claims (5)

1. clip automatic control air pipeline based structures between a ventilation plumber block stone, it is characterised in that: this road structure includes being located at road Dike bankets arranging and the extraneous horizontal ventilation pipe (3) communicated along vertical road-trend in (1);Described horizontal ventilation pipe (3) The one or both ends mouth of pipe installs automatic temperature-controlled air door (4);Block stone layer (5) is laid between adjacent described horizontal ventilation pipe (3);Described The continuous over level of horizontal ventilation pipe (3) and described block stone layer (5) lays insulation material (2).
2. clip automatic control air pipeline based structures between a kind of ventilation plumber block stone as claimed in claim 1, it is characterised in that: described A diameter of 0.3 ~ 0.8 m of horizontal ventilation pipe (3), its adjacent tubes axis spacing is 2 ~ 8 times of calibers, and its tube hub axis is away from natural Earth's surface (6) is 0.5 ~ 1.5 m.
3. clip automatic control air pipeline based structures between a kind of ventilation plumber block stone as claimed in claim 1, it is characterised in that: described It is-5 DEG C ~ 5 DEG C that the temperature of automatic temperature-controlled air door (4) controls threshold scope.
4. clip automatic control air pipeline based structures between a kind of ventilation plumber block stone as claimed in claim 1, it is characterised in that: described Block stone layer (5) is block stone or block rubble, and its thickness is consistent with the external diameter of described horizontal ventilation pipe (3).
5. clip automatic control air pipeline based structures between a kind of ventilation plumber block stone as claimed in claim 1, it is characterised in that: described The thickness of insulation material (2) is 10 ~ 50 cm, and its burial place is away from described horizontal ventilation pipe (3) top 0.0 ~ 1.0 m.
CN201620205095.5U 2016-03-17 2016-03-17 Press from both sides formula automatic control ventilation tube roadbed structure between ventilation plumber block stone Active CN205557217U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107201700A (en) * 2016-03-17 2017-09-26 中国科学院寒区旱区环境与工程研究所 Clip automatic control ventilation pipe foundation between one kind ventilation plumber block stone
CN108193575A (en) * 2017-12-20 2018-06-22 张昆 The anti-freeze expansion structure and its paving method of seasonal frozen soil region roadbed

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107201700A (en) * 2016-03-17 2017-09-26 中国科学院寒区旱区环境与工程研究所 Clip automatic control ventilation pipe foundation between one kind ventilation plumber block stone
CN108193575A (en) * 2017-12-20 2018-06-22 张昆 The anti-freeze expansion structure and its paving method of seasonal frozen soil region roadbed

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20200818

Address after: 730000 No.318, Donggang West Road, Chengguan District, Lanzhou City, Gansu Province

Patentee after: NORTHWEST INSTITUTE OF ECO-ENVIRONMENT AND RESOURCES, CAS

Address before: Chengguan District of Gansu city of Lanzhou province Donggang West Road 730000 No. 320

Patentee before: Institute of environment and Engineering in cold and dry areas, Chinese Academy of Sciences

TR01 Transfer of patent right