CN106676988A - Construction method for permeable wall type ventiduct roadbed - Google Patents
Construction method for permeable wall type ventiduct roadbed Download PDFInfo
- Publication number
- CN106676988A CN106676988A CN201611243014.1A CN201611243014A CN106676988A CN 106676988 A CN106676988 A CN 106676988A CN 201611243014 A CN201611243014 A CN 201611243014A CN 106676988 A CN106676988 A CN 106676988A
- Authority
- CN
- China
- Prior art keywords
- ventilation
- pipe
- roadbed
- pullover
- band
- Prior art date
- 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.)
- Pending
Links
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a construction method for a permeable wall type ventiduct roadbed. Thermal disturbance of road construction in a permafrost area to a roadbed is intense, the influence on the thermal stability of the permafrost roadbed is quite remarkable, and consequently the degradation process of permafrost is quickened, and engineering measures for protecting permafrost must be emphatically considered. The construction method includes the steps that ventilation pipe sections with sleeve heads are prefabricated; an embankment under a permeable wall type ventiduct is compacted; after the roadbed surface is leveled and rolled, the permeable wall type ventiduct is mounted; filling and compacting of padding on the upper portion of the permeable wall type ventiduct are conducted; and the ventilation pipe sections with the sleeve heads are of a reinforced concrete structure and are cylindrical, and one end of each ventilation pipe section is expanded to form a horn-shaped large orifice with the inner diameter being the same as the outer diameter of the other end of the ventilation pipe section with the sleeve head. According to the construction method for the ventiduct roadbed, the convection cooling effect is remarkable, the engineering cost is low, the construction process is simple and convenient, wind energy resources are utilized, and the method is quite suitable for constructing the ventiduct roadbed and commonly adapts to a high-temperature high-ice-content permafrost area road section with the roadbed height being larger than two meters.
Description
Technical field
The present invention relates to a kind of roadbed construction method, and in particular to a kind of construction method of transmural formula ventilation pipe foundation.
Background technology
Thermal agitation of the Permafrost Area highway construction to roadbed is more strong, due to building for roadbed, changes frozen soil
Water and heat condition, causes the redistribution of hydro-thermal, and the degenerative process for causing ever-frozen ground is accelerated.To prevent roadbed from producing larger change
Shape, it is ensured that subgrade strength and stability, is the key of highway engineering construction.The decline of the Upper Limit of Permafrost of highway subgrade bottom
Caused differential settlement is the main mode of road damage, during with these subgrade defects of pre-treatment, is deposited in design
In the undue guiding theory for relying on and increasing thermal resistance protection of permafrost, and the governing measure of frozen soil engineering is also relatively simple.Both at home and abroad
Substantial amounts of engineering practice proves that the measure of increase thermal resistance such as increases depth of fill and adopts insulation material, though can delay for many years
The thawing of frozen soil, but can not fundamentally improve the roadbed trend that year by year heat storage increases.At present, Qinghai-Tibet frozen soil is solved difficult
Topic, must just break through traditional design idea, try to explore the new approaches for solving a Qinghai-Tibet frozen soil difficult problem.Wherein, using convection current
The engineering measure of the active control roadbed thermal conditions such as ventilation pipe foundation of effects of reduced temperature is progressively applied to the frozen soil work such as Qinghai-Tibet Highway
Among Cheng Jianshe.
Meteorological research shows that the wind speed of the Permafrost Area that Qinghai-Tibet Platean is passed through is very big, and the wind speed during low temperature is than high
Wind speed during temperature is bigger, it is seen then that how to make full use of winter cold air and underlies soil layer ground temperature reducing roadbed, i.e., " actively cold
But roadbed " also has very big potentiality to dig.
The content of the invention
It is an object of the invention to provide a kind of construction method of transmural formula ventilation pipe foundation, there is provided roadbed heat exchanger effectiveness,
Reduce the thermal agitation of roadbed.
The technical solution adopted in the present invention is：
The construction method of transmural formula ventilation pipe foundation, it is characterised in that：
Comprise the following steps：
Step one：Prefabricated band pullover ventilation tube coupling（4）；
Step 2：To perforated ventilation pipe（3）Following embankment carries out compaction treatment, during roadbed filling roadbed both sides ultra-wide 30cm with
On, crown slope slows down, and horizontal wall inscription is arranged to 0.5%~1%；
Step 3：Road bed leveling, roll after, carry out perforated ventilation pipe（3）Operation is laid, is comprised the following steps：
Ttom of pipe basis trimming → ttom of pipe basis examination → surveying setting-out → band pullover ventilation tube coupling（4）Lifting → band pullover ventilation duct
Section（4）Pipe position accurate adjustment → band pullover ventilation tube coupling（4）Fixation → junction M10 mortar-chalked joints → perforated ventilation pipe（3）Guan Jian
Sandy gravel backfill, compacting；
Step 4：Perforated ventilation pipe（3）Top filler is filled, is compacted, the non-smooth slope towards both sides transverse drainage of filler of seeping water
Spend for 4%.
Band pullover ventilation tube coupling（4）Positioned by wedge shape concrete block.
Band pullover ventilation tube coupling（4）It is cylindrical shape for reinforced concrete structure, one end expands to form trumpet-shaped big pipe
Mouth, big spout diameter and band pullover ventilation tube coupling（4）Other end external diameter is identical.
Band pullover ventilation tube coupling（4）Interior arrangement of reinforcement includes the axial arrangement of reinforcement on the whole body（5）, straight length spiral to arrangement of reinforcement（6）With
The radial direction arrangement of reinforcement of the two ends mouth of pipe（7）, radial direction arrangement of reinforcement（7）Annularly.
Band pullover ventilation tube coupling（4）It is sequentially connected with, the big mouth of pipe end face of joint passes through cement mortar（8）Closure consolidation.
The present invention has advantages below：
Air pipeline base construction method according to the present invention, convective cooling effect is significant, low engineering cost, construction technology is easy,
Using wind energy resources, it is especially suitable for building ventilation pipe foundation, applies in general to high temperature high ice content of the roadbed highly more than 2m many
Year permafrost region section.
Description of the drawings
Fig. 1 is ventilation pipe foundation structure chart.
Fig. 2 is band pullover ventilation duct nodule composition.
Fig. 3 is band pullover ventilation tube coupling connection figure.
In figure, 1- basic units, 2- surface layers, 3- perforated ventilation pipes, 4- band pullover divulge information tube coupling, 5- axial direction arrangement of reinforcement, 6- spirals to
Arrangement of reinforcement, 7- radial direction arrangements of reinforcement, 8- cement mortar.
Specific embodiment
With reference to specific embodiment, the present invention will be described in detail.
The construction method of transmural formula ventilation pipe foundation according to the present invention, comprises the following steps：
Step one：Prefabricated band pullover ventilation tube coupling 4；
Step 2：Compaction treatment is carried out to embankment of the perforated ventilation pipe below 3, during roadbed filling roadbed both sides ultra-wide 30cm with
On, crown slope slows down, and horizontal wall inscription is arranged to 0.5%~1%；
Step 3：Road bed leveling, roll after, carry out perforated ventilation pipe 3 lay operation, comprise the following steps：
Ttom of pipe basis trimming → ttom of pipe basis examination → surveying setting-out → band pullover ventilation tube coupling 4 lifts → band pullover ventilation tube coupling
4 pipe position accurate adjustments → band pullover ventilation tube coupling 4 fixes → junction M10 mortar-chalked joints → pipe of perforated ventilation pipe 3 between sandy gravel return
Fill out, be compacted；Band pullover ventilation tube coupling 4 is positioned by wedge shape concrete block.
Step 4：The top filler of perforated ventilation pipe 3 is filled, is compacted, and non-infiltration filler is smooth towards both sides transverse drainage
The gradient is 4%.
Band pullover ventilation tube coupling 4 is reinforced concrete structure, is cylindrical shape, and one end expands to form the trumpet-shaped big mouth of pipe,
Big spout diameter is identical with the band pullover ventilation other end external diameter of tube coupling 4.Include the axial direction on the whole body with arrangement of reinforcement in pullover ventilation tube coupling 4
The spiral of arrangement of reinforcement 5, straight length is to arrangement of reinforcement 6 and the radial direction arrangement of reinforcement 7 of the two ends mouth of pipe, and radial direction arrangement of reinforcement 7 is annular in shape.Band pullover ventilation tube coupling
4 are sequentially connected with, and the big mouth of pipe end face of joint is by the closure consolidation of cement mortar 8.
1st, the operation principle of ventilation pipe foundation
Ventilation pipe foundation is, by the heat convection between Gas regulation and roadbed, roadbed and its underpart to be realized using natural cold source
" the air cooling roadbed " of the effect that cools of the soil body, is a kind of engineering measure of effective active protection of permafrost.Ventilation pipe foundation
Be in the position laying insertion of roadbed certain altitude, perpendicular to the ventilation shaft of road-trend, to increase roadbed and air it
Between convection heat transfer intensity, using the air lower than roadbed temperature circulation, take away roadbed heat, reach the mesh of cooling foundation
's.
2nd, the applicable elements of ventilation pipe foundation
Ventilation pipe foundation convective cooling effect is significant, low engineering cost, construction technology is easy, and has on Qinghai-Tibet Platean abundant
Wind energy resources, be especially suitable for build ventilation pipe foundation, apply in general to roadbed highly be more than 2m high temperature high ice content for many years
Permafrost region section.
3. ventilation pipe foundation design
Ventilation pipe foundation is a kind of new road structure, the also non-widespread adoption in the highway construction of Permafrost Area.According to
Needs in the working mechanism and engineering design of ventilation pipe foundation, air pipeline based structures adopt following parameter：
（1）The tube coupling of ventilation pipe foundation adopts internal diameter 0.4m, the armored concrete prefabricated pipe of external diameter 0.5m, pipe range 1m.
（2）The buried depth of ventilation duct should be greater than 3~5 times of calibers, the 1m below roadbed top surface, and ventilation duct laying should compare original place
The high 0.7-1m distances in face, on the one hand can obtain higher wind speed, on the other hand, it is to avoid surface water flows into ventilation duct, affect logical
The effect of airduct.
（3）Ventilation duct longitudinal pitch arranges that ventilation duct stretches out side slope of embankment length should according to adjacent two tube wall to tube wall 2m
More than 30cm.
（4）When the design of pipeline base is aerated, it is necessary to the local prevailing wind direction of investigation, ventilation duct is made as far as possible with locality
Prevailing wind direction is consistent, and can otherwise affect the cooling-down effect of ventilation pipe foundation.
4. ventilation pipe foundation construction technology
（1）Preparation of construction
According to design requirement, structure design and customization are carried out to vent pipe die, Jing shapes after the assay was approved production.Prefabrication process
Carry out the setting work that reinforcing bar is laid and reserves ventilation pore.Concentrate where weather conditions and health-preserving condition are preferable pre-
System, per the prefabricated transmural formula ventilation duct of batch intensity detection will be on request carried out, and reaching can be normal after comprcssive strength etc. is required
Production.
The product qualified to self-inspection is detected by testing agency to it, it is important that the concrete mix inspection of ventilation duct
Survey, comprcssive strength is detected.Ventilation pipe size has to comply with design requirement, and flat appearance is bright and clean, and bell and spigot is without cracking and collides damage
Wound.Require to prefabricated every batch according to corresponding sampling observation frequency sampling observation according to usage amount, detection it is qualified provide survey report.
After self-inspection and sampling observation are qualified, transmural formula ventilation duct is transported to job site.
（2）Base treatment and roadbed filling
In line with the principle of " rather fill out and do not dig ", the excavation to neighbouring original place table is reduced as far as possible.Press technique of design and construction detailed rules and regulations simultaneously
Require, be respectively processed according to the difference that frozen soil is distributed location embankment ice content, the following embankment of ventilation duct must be wanted by design
Seek compaction treatment.To ensure the compactness of side slope, roadbed both sides should be than designing more than ultra-wide 30cm during roadbed filling.It is logical to ensure
The ventilation of the airduct left and right sides is smooth, and crown slope should suitably slow down, and horizontal wall inscription is set to 0.5%~1% or so.Road bed leveling,
After rolling, flatness and compactness detection are carried out, pipe can be aerated after detection is qualified and lays operation.
（3）The installation of ventilation duct
The construction of ventilation duct according to：Ttom of pipe basis trimming-ttom of pipe basis examination-surveying setting-out-ventilation duct lifting-pipe position
Accurate adjustment-ventilation duct fixes-junction M10 mortar-chalked joints-ventilation duct pipe between sandy gravel backfill, compacting-ventilation duct top fill out
Material is filled, is compacted.
1. ttom of pipe based process, examination
The following embankment of ventilation duct must should be reached roadbed top surface and be delivered for a check mark by design requirement leveling, compacting, flatness and compactness
Standard, and 0.5%~1% two-way herringbone horizontal wall inscription is set.
2. surveying setting-out
Recover road center line on road bed, and according to the design attitude and elevation of ventilation duct, measurement determines the lifting of per pass ventilation duct
Position, and with white lime line sign.
3. the installation of ventilation duct
Ventilation duct is lifted using loader, and the mode that hand fit installs is carried out.During construction, the little mouth of pipe one end of every section of ventilation duct must
Must overlap with adjacent big mouth of pipe one end, the lap of splice is not less than 8cm.
Often lift after one section of ventilation duct, the straight degree of Dou Yingduizheng roads ventilation duct is checked, and carries out accurate adjustment, is then hung
Load one section of ventilation duct.After per pass ventilation duct is installed, pipeline of divulging information should be checked, it is ensured that along roadbed laterally, often
Road can see the other end from one end of ventilation duct.The side that tube wall has transmural hole is laid in into bottom, it is ensured that aeration-cooling
Effect.Embankment length is stretched out at ventilation duct two ends should meet design requirement, and ventilation duct two ends must even up.
After the accurate adjustment of ventilation duct position and inspection, the position of ventilation duct is fixed using wedge shape concrete block, it is ensured that subsequently apply
The construction of work operation does not interfere with the straight of ventilation duct.Jointing is carried out to ventilation duct and ventilation duct junction using M10 mortars
Process, ventilation duct and ventilation duct junction should sprinkle water process before jointing.
4. backfill, compacting between ventilation duct pipe
The straight degree of ventilation duct, position are fixed and mortar-chalked joint check after, between being managed backfill.To ensure between longitudinal ventilation pipe pipe
Can backfill, be compacted, backfilling material must adopt gravel.Due to backfill thickness it is too low when, compacting process can extrude both sides ventilation
Pipe, causes the ventilation duct changing of the relative positions, when backfill thickness is too high, compactness between pipe can be caused not reach requirements, the live repetition tests of Jing,
Can be compacted using hydraulic High-speed Compactor when being backfilled to one half height of ventilation duct, design requirement can be met.
5. ventilation duct top is filled
Filler should be transported using dump truck, be put down using at the beginning of bull-dozer, and land leveller is flat eventually, and burnishing surface must not have obvious localized indentation
Convex, non-infiltration filler burnishing surface should make 4% gradient to both sides transverse drainage.Highway Embankment Compaction should adopt heavy vibration roller
Along route longitudinal direction by two it is lateral in the middle of carry out, each section junction should overlap each other compacting, and longitudinal lap joint length is no less than
2.0m, lateral compacting is overlapped and is no less than 0.4m, and controls compactness and flatness according to code requirement.Stretch out at ventilation duct two ends
Embankment length should meet design requirement, be to ensure attractive in appearance, and ventilation duct two ends must even up.
（4）Ventilation duct quality control points
1. ventilation duct inspection
Quality inspection should be carried out before construction to ventilation duct, ventilation pipe size has to comply with design requirement, and flat appearance is bright and clean, socket joint
Mouth is without cracking and collsion damage.
2. ventilation technique is processed and crown slope
Ventilation duct compactness, flexure and flatness should reach roadbed top surface and deliver for a check standard, and it is horizontal to arrange the road camber herringbone of 0.5%-1%
Slope.
3. the splicing of ventilation duct
Adjacent two sections of ventilation duct laps of splice are not less than 8cm.Along roadbed laterally, per pass ventilation duct can be seen another from one end
End, ventilation duct must be processed with ventilation duct junction using M10 mortar-chalked joints.
4. backfill between ventilation duct pipe
Backfilling material must adopt gravel between longitudinal ventilation pipe and ventilation duct pipe, and be compacted using hydraulic High-speed Compactor,
To ensure its compactness.
5. ventilation duct top backfill
Embankment length is stretched out at ventilation duct two ends should meet design requirement, be to ensure attractive in appearance, and ventilation duct two ends must even up.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And any equivalent conversion that technical solution of the present invention is taken, it is claim of the invention and is covered.
Claims (5)
1. the construction method of transmural formula ventilation pipe foundation, it is characterised in that：
Comprise the following steps：
Step one：Prefabricated band pullover ventilation tube coupling（4）；
Step 2：To perforated ventilation pipe（3）Following embankment carries out compaction treatment, during roadbed filling roadbed both sides ultra-wide 30cm with
On, crown slope slows down, and horizontal wall inscription is arranged to 0.5%~1%；
Step 3：Road bed leveling, roll after, carry out perforated ventilation pipe（3）Operation is laid, is comprised the following steps：
Ttom of pipe basis trimming → ttom of pipe basis examination → surveying setting-out → band pullover ventilation tube coupling（4）Lifting → band pullover ventilation duct
Section（4）Pipe position accurate adjustment → band pullover ventilation tube coupling（4）Fixation → junction M10 mortar-chalked joints → perforated ventilation pipe（3）Guan Jian
Sandy gravel backfill, compacting；
Step 4：Perforated ventilation pipe（3）Top filler is filled, is compacted, the non-smooth slope towards both sides transverse drainage of filler of seeping water
Spend for 4%.
2. the construction method of transmural formula ventilation pipe foundation according to claim 1, it is characterised in that：
Band pullover ventilation tube coupling（4）Positioned by wedge shape concrete block.
3. the construction method of transmural formula ventilation pipe foundation according to claim 1, it is characterised in that：
Band pullover ventilation tube coupling（4）It is cylindrical shape for reinforced concrete structure, one end expands to form the trumpet-shaped big mouth of pipe, greatly
Spout diameter and band pullover ventilation tube coupling（4）Other end external diameter is identical.
4. the construction method of transmural formula ventilation pipe foundation according to claim 3, it is characterised in that：
Band pullover ventilation tube coupling（4）Interior arrangement of reinforcement includes the axial arrangement of reinforcement on the whole body（5）, straight length spiral to arrangement of reinforcement（6）And two ends
The radial direction arrangement of reinforcement of the mouth of pipe（7）, radial direction arrangement of reinforcement（7）Annularly.
5. the construction method of transmural formula ventilation pipe foundation according to claim 3, it is characterised in that：
Band pullover ventilation tube coupling（4）It is sequentially connected with, the big mouth of pipe end face of joint passes through cement mortar（8）Closure consolidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243014.1A CN106676988A (en) | 2016-12-29 | 2016-12-29 | Construction method for permeable wall type ventiduct roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243014.1A CN106676988A (en) | 2016-12-29 | 2016-12-29 | Construction method for permeable wall type ventiduct roadbed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106676988A true CN106676988A (en) | 2017-05-17 |
Family
ID=58872082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243014.1A Pending CN106676988A (en) | 2016-12-29 | 2016-12-29 | Construction method for permeable wall type ventiduct roadbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106676988A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169281A (en) * | 2018-01-17 | 2018-06-15 | 绍兴文理学院元培学院 | A kind of ventilation duct percent opening Control experiment device and method |
| CN110878501A (en) * | 2019-12-12 | 2020-03-13 | 四川浩克山青水绿科技有限责任公司 | Novel ventilation pipe for treating frozen expansion and thawing settlement diseases of existing line roadbed |
| CN110983890A (en) * | 2019-12-12 | 2020-04-10 | 四川浩克山青水绿科技有限责任公司 | Existing line soil roadbed frost heaving and thawing sinking treatment method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08187315A (en) * | 1995-01-10 | 1996-07-23 | Taisei Corp | Prevention freezing in under-floor structure of slope of artificial skiing ground |
| 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 |
| CN2755178Y (en) * | 2004-06-04 | 2006-02-01 | 同济大学 | Anti-freeze terrace structure design of railway in frozen region |
| CN101586351A (en) * | 2009-06-17 | 2009-11-25 | 重庆交通大学 | The air chimney of using in the engineering of Han Qu area |
| RU2379405C1 (en) * | 2008-11-07 | 2010-01-20 | Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" | Embankment on frozen soil |
| CN202450406U (en) * | 2011-12-29 | 2012-09-26 | 中交第一公路勘察设计研究院有限公司 | Permeable-wall ventilating duct and fragment stone composite road bed |
| CN204224942U (en) * | 2014-11-08 | 2015-03-25 | 青海省公路科研勘测设计院 | Subgrade stability structure in ever-frozen ground area |
| CN104452508A (en) * | 2014-12-12 | 2015-03-25 | 中交第一公路勘察设计研究院有限公司 | Large-scale frozen roadbed cooling structure capable of strengthening convective cooling efficiency of rock blocks |
| CN106087636A (en) * | 2016-08-05 | 2016-11-09 | 中交第公路勘察设计研究院有限公司 | Permafrost Area freeze thawing resistance heat accumulation horizontal proliferation ventilation curb structure |
-
2016
- 2016-12-29 CN CN201611243014.1A patent/CN106676988A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08187315A (en) * | 1995-01-10 | 1996-07-23 | Taisei Corp | Prevention freezing in under-floor structure of slope of artificial skiing ground |
| 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 |
| CN2755178Y (en) * | 2004-06-04 | 2006-02-01 | 同济大学 | Anti-freeze terrace structure design of railway in frozen region |
| RU2379405C1 (en) * | 2008-11-07 | 2010-01-20 | Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" | Embankment on frozen soil |
| CN101586351A (en) * | 2009-06-17 | 2009-11-25 | 重庆交通大学 | The air chimney of using in the engineering of Han Qu area |
| CN202450406U (en) * | 2011-12-29 | 2012-09-26 | 中交第一公路勘察设计研究院有限公司 | Permeable-wall ventilating duct and fragment stone composite road bed |
| CN204224942U (en) * | 2014-11-08 | 2015-03-25 | 青海省公路科研勘测设计院 | Subgrade stability structure in ever-frozen ground area |
| CN104452508A (en) * | 2014-12-12 | 2015-03-25 | 中交第一公路勘察设计研究院有限公司 | Large-scale frozen roadbed cooling structure capable of strengthening convective cooling efficiency of rock blocks |
| CN106087636A (en) * | 2016-08-05 | 2016-11-09 | 中交第公路勘察设计研究院有限公司 | Permafrost Area freeze thawing resistance heat accumulation horizontal proliferation ventilation curb structure |
Non-Patent Citations (1)
| Title |
|---|
| 樊凯: "多年冻土地区特殊路基设计与施工技术研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169281A (en) * | 2018-01-17 | 2018-06-15 | 绍兴文理学院元培学院 | A kind of ventilation duct percent opening Control experiment device and method |
| CN108169281B (en) * | 2018-01-17 | 2023-08-15 | 绍兴文理学院元培学院 | Vent pipe aperture ratio control test device and method |
| CN110878501A (en) * | 2019-12-12 | 2020-03-13 | 四川浩克山青水绿科技有限责任公司 | Novel ventilation pipe for treating frozen expansion and thawing settlement diseases of existing line roadbed |
| CN110983890A (en) * | 2019-12-12 | 2020-04-10 | 四川浩克山青水绿科技有限责任公司 | Existing line soil roadbed frost heaving and thawing sinking treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103696376A (en) | Concrete foundation-free highway culvert for permafrost region | |
| CN108842819B (en) | Urban rail transit cable line tunnel construction method | |
| CN105274922B (en) | A kind of antiskid key steel-pipe pile composite construction and method for repairing landslide roadbed | |
| CN104060631B (en) | A kind of manhole mouth elevation Dynamic controlling structure | |
| CN107142856A (en) | Bridge pier and the bridge of lifting reconstruction that abutment remodeling method, abutment, abutment are transformed | |
| CN110306595B (en) | Co-building structure of electric power pipe gallery and flood control wall and construction method thereof | |
| CN109914161B (en) | Construction method of high-speed railway filling roadbed in soft soil area | |
| CN106676988A (en) | Construction method for permeable wall type ventiduct roadbed | |
| CN110004991A (en) | Underground structure anti-floating system and construction method based on raised type tangs plate | |
| CN105735157A (en) | Large-diameter steel corrugated pipe culvert structure for half-filled and half-dug roadbed in plateau high-cold region and method for constructing large-diameter steel corrugated pipe culvert structure | |
| CN107165022A (en) | A kind of big thickness subbase construction method of High-cold regions highway widening reinforcement | |
| CN104594379B (en) | Between rail yard interior lines, be incubated culvert pipe system and burial and construction method | |
| CN204570720U (en) | A kind of widening of subgrade culvert foundation | |
| CN210194361U (en) | Splicing structure for widening new and old roadbeds on road | |
| CN108316344A (en) | A kind of construction method of subway station hall layer | |
| CN104695417B (en) | A kind of manufacture method of grouting behind shaft or drift lining broken stone pile | |
| CN102322275A (en) | Corrugated sheet steel channel supporting tube and channel construction process | |
| CN206941425U (en) | The bridge of abutment, the bridge pier of abutment transformation and lifting reconstruction | |
| CN207553135U (en) | A kind of pipe gallery | |
| CN102817298A (en) | Construction method on permafrost | |
| CN205000325U (en) | Urban road ground that tubular pile was handled | |
| CN202925538U (en) | Rammer used in construction on frozen earth | |
| CN110454189A (en) | A kind of river tunnel Xia Chuan construction technology | |
| CN107269930B (en) | Bellows substitutes the construction of sealing-tape machine concrete corridor in sandstone system | |
| CN212582461U (en) | Steel corrugated pipe culvert structure for preventing pavement from cracking in high and cold frozen soil areas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |
|
| RJ01 | Rejection of invention patent application after publication |