CN205115938U - Road bed freeze injury of high and cold district is synthesized and is punished structure - Google Patents
Road bed freeze injury of high and cold district is synthesized and is punished structure Download PDFInfo
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- CN205115938U CN205115938U CN201520814556.4U CN201520814556U CN205115938U CN 205115938 U CN205115938 U CN 205115938U CN 201520814556 U CN201520814556 U CN 201520814556U CN 205115938 U CN205115938 U CN 205115938U
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- geotextiles
- french drain
- warming plate
- waterproof
- concrete
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- 230000009746 freeze damage Effects 0.000 title abstract description 6
- 239000004567 concrete Substances 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 239000004746 geotextile Substances 0.000 claims description 67
- 238000010792 warming Methods 0.000 claims description 38
- 239000004570 mortar (masonry) Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 17
- 239000007767 bonding agent Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 5
- 230000008595 infiltration Effects 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 abstract description 5
- 239000011440 grout Substances 0.000 abstract description 4
- 239000012466 permeate Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 4
- 239000004744 fabric Substances 0.000 abstract 2
- 238000001556 precipitation Methods 0.000 abstract 1
- 238000009412 basement excavation Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- -1 gutter Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model relates to a road bed freeze injury of high and cold district is synthesized and is punished structure, the structure mainly by road surface, lateral sulcus, side ditch, grout that slabstone bank protection, catch water drain, heat preservation banket, plastics waterproof board and french drain constitute, lateral sulcus, side ditch lie in the road surface both sides, and the catch water drain lies in the nature domatic and grout between the slabstone bank protection, grout to cover the heat preservation under the slabstone bank protection and banket, and the heat preservation bankets down and lays the plastics waterproof board, and the heat preservation bankets and the lateral sulcus lower part sets up the french drain. The french drain comprises lower supreme adoption concrete foundation, vertical heated board, strainer, medium coarse sand, rubble, horizontal heated board, geotechnological cloth etc. And the heated board setting is adopted all around and is permeated water and the nimble structural style who makes up of waterproof geotechnological cloth at the outside and top. The utility model relates to a structure has construction convenience, and the precipitation drainage reduces winter and seeps water the freeze injury, avoids the infiltration further to permeate and improve advantage such as whole subgrade stability nature.
Description
Technical field
The utility model belongs to Roadbed Construction Technology field, is specifically related to High-cold regions roadbed freeze-harm Comprehensive Treatment structure.
Background technology
Extremely frigid zones winter temperature is low, can increase domatic load after side slope seepage freezes, and simultaneously maximumly to freeze in dark scope because frost heave can destroy domatic original soil stabilization structure, causes landslide.Roadbed infiltration, through long-term corrosion function, can weaken the bulk strength of basic unit, base plinth, and under the repeat function of long-term traffic load, top layer Free water forms mortar, and long-term assembly causes road surface check crack, causes road structure early damage.Winter can there is frost heave because there being water in roadbed, destroys road structure, is ruptured in road surface, endanger traffic safety, increases maintenance costs.Spring melts season, and the soil body is in saturation state, under dynamic loading, causes frost heave, bursts and become muddy when a thaw sets in, emits the diseases such as mud, destroy subgrade stability, impact driving quality.
High-cold regions roadbed cold-proof heat insulation, dredges the infiltration in side slope and roadbed, and infiltration is discharged smoothly, avoids seeping water washing away side slope and causing slope failure to become the difficult point of roadbed freeze-harm integrated treatment.
Given this, need a kind of sequence of construction of utility model at present badly reasonable, road bed and lowering water level draining can be ensured, effectively solve construction method and the technique of the frozen earth roadbed seepage problem of extremely frigid zones.
Utility model content
The purpose of this utility model is to provide a kind of easy High-cold regions roadbed freeze-harm Comprehensive Treatment structure, the structural configuration of improvement french drain on the one hand, the control of rationally process side slope seepage and freeze injury on the other hand, the method taking mole drainage and earth's surface to cut draining to combine, realizing infiltration in winter and discharging and reduce freeze injury.
For achieving the above object, the utility model have employed following technical scheme:
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, is characterized in that described structure is banketed primarily of road surface, lateral sulcus, layer of concrete, gutter, mortar rubble masonry pavement, catchwater, insulation layer, drainage systems and french drain composition; Described lateral sulcus, gutter are positioned at both sides, road surface, lateral sulcus on layer of concrete, catchwater is between natural slope and mortar rubble masonry pavement, layer of concrete is connected by curb with road surface, cover insulation layer under mortar rubble masonry pavement to banket, insulation layer bankets lower laying drainage systems, insulation layer banket bottom arrange right side french drain, layer of concrete bottom arrange left side french drain.
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that left side french drain is from the bottom to top successively by concrete foundation, soakaway trench, medium coarse sand, rubble, vertical warming plate, horizontal warming plate and geotextiles composition, described geotextiles comprises permeable geotextiles and waterproof geotextiles, permeable geotextiles is arranged on bottom the french drain of left side and right side wall place, waterproof geotextiles is arranged on the left of the french drain of left side and top, horizontal warming plate is positioned at above the waterproof geotextiles at french drain top, left side, vertical warming plate is positioned at outside the waterproof geotextiles on the left of the french drain of left side, soakaway trench is between concrete foundation and medium coarse sand.
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that arranging preset tightening latch in vertical warming plate, preset tightening latch is connected with concrete foundation when concreting.
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that vertical warming plate and horizontal warming plate intersection bonding agent connect and compose node, node outside angle bar is reinforced.
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that right side french drain is made up of concrete foundation, soakaway trench, medium coarse sand, rubble and geotextiles from the bottom to top successively, described geotextiles comprises permeable geotextiles and waterproof geotextiles, waterproof geotextiles is arranged on bottom the french drain of right side and left side place, permeable geotextiles is arranged on the right side of the french drain of right side and top, and soakaway trench is between concrete foundation and medium coarse sand.
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that drainage systems overlaps connection by plastic plate by levels stacked, bottom plastic plate is pressed in above upper plastic plate, and overlapping part marine glue is bonding.
Described High-cold regions roadbed freeze-harm Comprehensive Treatment structure, is characterized in that laying waterproof geotextiles I bottom mortar rubble masonry pavement.
By adopting above-mentioned technology, compared with prior art, the utility model there is following feature and beneficial effect as follows:
1) french drain is arranged symmetrically with, and the method taking mole drainage and earth's surface to cut draining to combine, reduce the destruction of freeze thawing to the soil body, effectively enhance the stability of roadbed;
2) french drain adopts concrete foundation, vertical warming plate, steel band reinforced polyethylene spiral ripple filter pipe, medium coarse sand, rubble and horizontal warming plate from the bottom to top, surrounding adopts the form of structure of permeable and waterproof geotextiles flexible combination, the effect reaching draining, reduce water level, reduce roadbed freeze-harm;
3) vertical warming plate and concrete foundation adopt reserved peg to be connected and fixed, and vertical warming plate and horizontal warming plate adopt angle bar to be suitable for being connected and fixed, and reach convenient construction, improve the drainage effect of french drain and the object of globality;
4) adopt bonding agent to be connected between warming plate with geotextiles, after bonding process, there is not gap between geotextiles and warming plate, reach and improve the displacement mass of french drain and the object of globality;
5) side slope waterproof adopts french drain, insulation layer to banket and the combining form of splash guard, reaches to reduce winter and seep water freeze injury, avoid seeping water and permeate and improve the effect of whole subgrade stability further.
Accompanying drawing explanation
Fig. 1 is High-cold regions roadbed freeze-harm Comprehensive Treatment structural layout plan.
In figure: 1-lateral sulcus; 2-layer of concrete; 3-curb; 4-road surface; 5-gutter; 6-mortar rubble masonry pavement; 7-catchwater; 8-is domatic; 9-insulation layer bankets; 10-drainage systems; 11-angle bar; The waterproof geotextiles of 12-; The vertical warming plate of 13-; The horizontal warming plate of 13a-; 14-rubble; The permeable geotextiles of 15-; 16-medium coarse sand; 17-filter pipe; 18-concrete foundation; The preset tightening latch of 19-, the waterproof geotextiles I of 20-.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model will be further described, and present embodiment emphasis sets forth the embodiment that the utility model relates to structure.
Fig. 1 represents High-cold regions roadbed freeze-harm Comprehensive Treatment structural layout plan.As shown in the figure, roadbed freeze-harm Comprehensive Treatment structure mainly comprises: road surface 4, lateral sulcus 1, layer of concrete 2, gutter 5, mortar rubble masonry pavement 6, catchwater 7, insulation layer bankets 9, drainage systems 10 and french drain composition, described lateral sulcus 1, gutter 5 is positioned at both sides, road surface 4, lateral sulcus 1 is positioned on layer of concrete 2, catchwater 7 is between natural slope 8 and mortar rubble masonry pavement 6, layer of concrete 2 is connected by curb 3 with road surface 4, mortar rubble masonry pavement covers insulation layer for 6 times and bankets 9, insulation layer bankets and lays drainage systems 10 9 times, drainage systems 10 overlaps connection by plastic plate by levels stacked, bottom plastic plate is pressed in above upper plastic plate, overlapping part marine glue is bonding, waterproof geotextiles I 20 is laid bottom mortar rubble masonry pavement 6, insulation layer banket 9 bottoms arrange right side french drain, layer of concrete 2 bottom arranges left side french drain, left side french drain and right side french drain surrounding adopt the form of structure of permeable and waterproof geotextiles flexible combination.
As shown in the figure, left side french drain is from the bottom to top successively by concrete foundation 18, soakaway trench 17, medium coarse sand 16, rubble 14, vertical warming plate 13, horizontal warming plate 13a and geotextiles composition, described geotextiles comprises permeable geotextiles 15 and waterproof geotextiles 12, permeable geotextiles 15 is arranged on bottom the french drain of left side and right side wall place, waterproof geotextiles 12 is arranged on the left of the french drain of left side and top, horizontal warming plate 13a is positioned at above the waterproof geotextiles 12 at french drain top, left side, vertical warming plate 13 is positioned at outside the waterproof geotextiles 12 on the left of the french drain of left side, vertical warming plate 13 connects and composes node with horizontal warming plate 13a intersection bonding agent, node outside angle bar 11 is reinforced, soakaway trench 17 is between concrete foundation 18 and medium coarse sand 16, in order to improve its fastness, the utility model arranges preset tightening latch 19 in vertical warming plate 13, preset tightening latch 19 is connected with concrete foundation 18 when concreting.
As shown in the figure, described right side french drain is made up of concrete foundation 18, soakaway trench 17, medium coarse sand 16, rubble 14 and geotextiles from the bottom to top successively, described geotextiles comprises permeable geotextiles 15 and waterproof geotextiles 12, waterproof geotextiles 12 is arranged on bottom the french drain of right side and left side place, permeable geotextiles 15 is arranged on the right side of the french drain of right side and top, and soakaway trench 17 is between concrete foundation 18 and medium coarse sand 16.
By design french drain arrangement diagram Combining with terrain concrete condition carries out french drain surveying setting-out.Put french drain internal and external contour line on the ground well with lime, then adopt machinery and indirect labor's excavation.When excavating contiguous design ground about 10 ~ 20cm into, hand excavation need be changed.Hand excavation must be careful, and speed slows down, and do not allow super excavation and owe to dig, can not disturbance side, bottom of trench and domatic original soil layer, slowly excavation is to design attitude.
With reference to shown in Fig. 1, the vertical warming plate 13 with preset tightening latch 19 is placed in advance in the french drain of left side, then geotextiles is laid, during geotextile laying, bottom and the right side of left side french drain adopt permeable geotextiles 15, top and left side adopt waterproof geotextiles 12, and the waterproof geotextiles in left side 12 is connected with bonding agent with vertical warming plate 13, horizontal warming plate 13a is provided with above the permeable geotextiles 15 on the top of left side french drain, vertical warming plate 13 connects and composes node with horizontal warming plate 13a intersection bonding agent, and node outside angle bar 11 is reinforced; Top and the right side of right side french drain adopt permeable geotextiles 15, bottom and left side adopt waterproof geotextiles 12, waterproof geotextiles I 20 is laid in mortar rubble masonry pavement 6 bottom, geotextiles is executed man-hour requirement and is laid neatly smooth-going, all horizontal, longitudinal lap joint seams must be alternately arranged, and the lap length need >=300mm of seam;
After geotextile laying is good, french drain bottom pour mold builds the thick concrete foundation of 20mm 18, employing Handheld vibrator vibrates, two row's filter pipes 17 are laid after concrete strength reaches 85%, filter pipe 17 is spread successively medium coarse sand 16 and rubble 14, then cover permeable geotextiles 15 or waterproof geotextiles 12 on request.Add one deck horizontal warming plate 13a, horizontal warming plate 13a after the french drain lid geotextiles of left side to be connected with bonding agent with between vertical warming plate 13, node outside angle bar 11 is reinforced, and end face builds the layer of concrete 2 of one deck band lateral sulcus 1.
With reference to shown in Fig. 1, above the french drain of right side, side slope arranges drainage systems 10, drainage systems 10 transversely adopts cataphracted levels stacked to overlap, bottom plastic plate is pressed on upper plastic plate, overlapping part waterproof is gluing, the wide 30cm of seam, and per pass seam is parallel with roadbed longitudinal section, drainage systems 10 and domatic between to flatten and tamp, but drainage systems 10 should not be drawn to obtain tension.Often lay a width drainage systems 10, at once backfill insulation layer earth material, successively lays and successively backfills, backfill insulation layer banket 9 time, must put down gently, in order to avoid crash through drainage systems 10.
With reference to shown in Fig. 1, mortar rubble masonry pavement 6 gradient is 1:1.5, before mortar rubble masonry pavement 6 is built by laying bricks or stones, first lays waterproof geotextiles I 20, acts in accordance with side slope and builds by laying bricks or stones to pushing up layering successively the end of from, first should build base plate, then build side wall when building gutter by laying bricks or stones when building side slope by laying bricks or stones.First slabstone should be watered before building by laying bricks or stones moistening, to realize the better bonding with mortar.First floor slabstone should greatly facing to basal plane, to ensure and enough contacts area of basal plane, second layer slabstone adopts seat to grout and builds, namely first at the mortar of first floor slabstone upper berth one deck suitable thickness, then second layer slabstone is laid, bottom bank protection, gutter is set with intersection, road surface, after mortar rubble masonry pavement 6 jointing health, catchwater 7 is set at bank protection end face.
Claims (7)
1. High-cold regions roadbed freeze-harm Comprehensive Treatment structure, is characterized in that described structure is banketed (9) primarily of road surface (4), lateral sulcus (1), layer of concrete (2), gutter (5), mortar rubble masonry pavement (6), catchwater (7), insulation layer, drainage systems (10) and french drain composition; Described lateral sulcus (1), gutter (5) are positioned at road surface (4) both sides, lateral sulcus (1) is positioned on layer of concrete (2), catchwater (7) is positioned between natural slope (8) and mortar rubble masonry pavement (6), layer of concrete (2) is connected by curb (3) with road surface (4), cover insulation layer under mortar rubble masonry pavement (6) and banket (9), drainage systems (10) is laid under insulation layer bankets (9), insulation layer bankets (9), and bottom arranges right side french drain, and layer of concrete (2) bottom arranges left side french drain.
2. High-cold regions according to claim 1 roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that left side french drain is from the bottom to top successively by concrete foundation (18), soakaway trench (17), medium coarse sand (16), rubble (14), vertical warming plate (13), horizontal warming plate (13a) and geotextiles composition, described geotextiles comprises permeable geotextiles (15) and waterproof geotextiles (12), permeable geotextiles (15) is arranged on bottom the french drain of left side and right side wall place, waterproof geotextiles (12) is arranged on the left of the french drain of left side and top, horizontal warming plate (13a) is positioned at waterproof geotextiles (12) top at french drain top, left side, vertical warming plate (13) is positioned at waterproof geotextiles (12) outside on the left of the french drain of left side, soakaway trench (17) is positioned between concrete foundation (18) and medium coarse sand (16).
3. High-cold regions according to claim 2 roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that arranging preset tightening latch (19) in vertical warming plate (13), preset tightening latch (19) is connected with concrete foundation (18) when concreting.
4. High-cold regions according to claim 2 roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that vertical warming plate (13) and horizontal warming plate (13a) intersection bonding agent connect and compose node, the outside angle bar of node (11) is reinforced.
5. High-cold regions according to claim 1 roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that right side french drain is made up of concrete foundation (18), soakaway trench (17), medium coarse sand (16), rubble (14) and geotextiles from the bottom to top successively, described geotextiles comprises permeable geotextiles (15) and waterproof geotextiles (12), waterproof geotextiles (12) is arranged on bottom the french drain of right side and left side place, permeable geotextiles (15) is arranged on the right side of the french drain of right side and top, and soakaway trench (17) is positioned between concrete foundation (18) and medium coarse sand (16).
6. High-cold regions according to claim 1 roadbed freeze-harm Comprehensive Treatment structure, it is characterized in that drainage systems (10) overlaps connection by plastic plate by levels stacked, bottom plastic plate is pressed in above upper plastic plate, and overlapping part marine glue is bonding.
7. High-cold regions according to claim 1 roadbed freeze-harm Comprehensive Treatment structure, is characterized in that waterproof geotextiles I (20) is laid in mortar rubble masonry pavement (6) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814556.4U CN205115938U (en) | 2015-10-21 | 2015-10-21 | Road bed freeze injury of high and cold district is synthesized and is punished structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814556.4U CN205115938U (en) | 2015-10-21 | 2015-10-21 | Road bed freeze injury of high and cold district is synthesized and is punished structure |
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| Publication Number | Publication Date |
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| CN205115938U true CN205115938U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520814556.4U Expired - Fee Related CN205115938U (en) | 2015-10-21 | 2015-10-21 | Road bed freeze injury of high and cold district is synthesized and is punished structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460806A (en) * | 2017-08-22 | 2017-12-12 | 李红星 | A kind of water conservancy construction waterproof construction |
| CN107476255A (en) * | 2017-08-22 | 2017-12-15 | 李红星 | A kind of hydraulic engineering waterproof construction method |
| CN107604781A (en) * | 2017-08-11 | 2018-01-19 | 中国二十冶集团有限公司 | Building block, building block device, block system for sponge city, the preparation method and construction method of building block |
| CN108411893A (en) * | 2018-05-14 | 2018-08-17 | 兰州理工大学 | A kind of frost damage prevention water seepage mechanism and its construction method |
| CN109680584A (en) * | 2018-12-30 | 2019-04-26 | 张家口路桥建设集团有限公司 | The stable road bed structure and construction technology of the anti-freeze thawing in seasonal frost region |
| CN111364304A (en) * | 2020-03-10 | 2020-07-03 | 广东省交通规划设计研究院股份有限公司 | Roadbed structure suitable for water vapor migration prevention and control |
-
2015
- 2015-10-21 CN CN201520814556.4U patent/CN205115938U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604781A (en) * | 2017-08-11 | 2018-01-19 | 中国二十冶集团有限公司 | Building block, building block device, block system for sponge city, the preparation method and construction method of building block |
| CN107460806A (en) * | 2017-08-22 | 2017-12-12 | 李红星 | A kind of water conservancy construction waterproof construction |
| CN107476255A (en) * | 2017-08-22 | 2017-12-15 | 李红星 | A kind of hydraulic engineering waterproof construction method |
| CN108411893A (en) * | 2018-05-14 | 2018-08-17 | 兰州理工大学 | A kind of frost damage prevention water seepage mechanism and its construction method |
| CN109680584A (en) * | 2018-12-30 | 2019-04-26 | 张家口路桥建设集团有限公司 | The stable road bed structure and construction technology of the anti-freeze thawing in seasonal frost region |
| CN109680584B (en) * | 2018-12-30 | 2021-04-13 | 张家口路桥建设集团有限公司 | Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process |
| CN111364304A (en) * | 2020-03-10 | 2020-07-03 | 广东省交通规划设计研究院股份有限公司 | Roadbed structure suitable for water vapor migration prevention and control |
| CN111364304B (en) * | 2020-03-10 | 2025-04-29 | 广东省交通规划设计研究院集团股份有限公司 | A roadbed structure suitable for preventing and controlling water vapor migration |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160330 Termination date: 20201021 |