CN214938907U - New and old road surface mosaic structure for highway extension - Google Patents
New and old road surface mosaic structure for highway extension Download PDFInfo
- Publication number
- CN214938907U CN214938907U CN202121326904.5U CN202121326904U CN214938907U CN 214938907 U CN214938907 U CN 214938907U CN 202121326904 U CN202121326904 U CN 202121326904U CN 214938907 U CN214938907 U CN 214938907U
- Authority
- CN
- China
- Prior art keywords
- new
- layer
- old
- basic unit
- base layer
- 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.)
- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 42
- 239000002344 surface layer Substances 0.000 claims description 17
- 239000011384 asphalt concrete Substances 0.000 claims description 12
- 150000001412 amines Chemical class 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a new and old pavement splicing structure for highway extension, which belongs to the technical field of pavement engineering, and comprises an old base layer, wherein one side of the old base layer is spliced with a new base layer, and the old base layer and the new base layer are spliced in a multi-stage ladder shape, so that the contact area between the new and old roadbed is increased, and the shearing stress and the base tensile stress generated at the splicing part are reduced; new basic unit includes from down up sets gradually at former subaerial bottom gravel layer, soil filling, packing layer, top metalling down, through be provided with middle part gravel layer between soil filling and packing layer, is equipped with two-way geogrid between packing layer, the top metalling, the effectual closely knit degree that has improved concatenation department. To sum up, the utility model discloses the linking problem of old and new road bed has been handled, has reduced the difference between old and new road bed and has subsided, has guaranteed the overall stability and the homogeneity of road bed.
Description
Technical Field
The utility model relates to a road surface engineering technical field, concretely relates to new and old road surface mosaic structure is used in highway enlargement.
Background
With the rapid development of social economy, the construction of domestic roads is changed day by day, and as the quantity of automobile reserves in China is continuously and rapidly increased, the road traffic force of provincial trunks tends to saturate, and the traffic pressure is increased sharply, so that part of road sections reach the service life in advance. In order to relieve traffic pressure and improve the traffic capacity of roads, a new high-grade highway is built on a large scale, and the existing highway is expanded and renovated; the former has high construction level and high road traffic capacity, but has large capital investment in the early stage, long construction period and larger limitation, and the latter is favored because of less investment, short construction period and quick response.
In the highway reconstruction and extension project, the original road surface is generally widened and newly built, after the reconstruction and extension highway passes for a period of time, the new and old road surfaces are easy to settle and deform, so that the problems of road surface crack, road surface damage and the like are caused, and the improper treatment of the splicing parts of the new and old road surfaces is the main reason of road surface widening differential settlement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a new and old road surface mosaic structure is used in highway enlargement to solve the enlargement road surface and easily produce cracked technical problem in the concatenation position.
The technical scheme of the utility model is that: the utility model provides a highway is expanded and is used new and old road surface mosaic structure, includes old basic unit, and one side concatenation of old basic unit has new basic unit, and old basic unit is multistage echelonment concatenation with new basic unit, and new basic unit includes from up setting gradually at former subaerial bottom gravel layer, soil filling, packing layer, top metalling down, be provided with middle part gravel layer between soil filling and the packing layer, be equipped with two-way geogrid between packing layer, the top metalling down, old basic unit is provided with the top facing layer with the top of new basic unit, and the top facing layer includes from up setting gradually down lower facing layer, well facing layer, the upper surface layer down.
According to a further technical scheme, the lower surface layer is a coarse particle type asphalt concrete lower surface layer with the thickness of 10cm, the middle surface layer is a medium particle type polyester amine fiber asphalt concrete middle surface layer with the thickness of 8cm, and the upper surface layer is a fine particle type modified asphalt concrete upper surface layer with the thickness of 6 cm.
According to a further technical scheme, a waterproof geomembrane is arranged between the bidirectional geogrid and the top gravel layer.
According to a further technical scheme, the width of each splicing surface between the old base layer and the new base layer is larger than 30 cm.
The utility model has the advantages that: the splicing part of the new and old roadbeds is the weak position of the roadbed structure, the utility model increases the contact area between the new and old roadbeds by arranging the multi-stage step-shaped steps, and reduces the shearing stress and the base tensile stress generated at the splicing part; the soil filling and the packing layer and the splicing of the upper part and the lower part of the soil filling and the packing layer form a double-layer drainage structure, so that the water content of the bottom can be effectively reduced, and the compactness of the spliced part is effectively improved. And, the void fraction size of above-mentioned pitch can direct influence bituminous mixture's intensity and high temperature stability, consequently, the utility model discloses well upper strata adopts fine grain formula modified asphalt concrete, guarantees that the superficial layer has sufficient antiskid, wear-resisting and the water-tightness, and well surface course adopts medium grain polyester amine fibre asphalt concrete, has sufficient anti rutting ability, and lower surface course adopts coarse grain formula asphalt concrete, has sufficient intensity and has the characteristic to the basic unit transition. To sum up, the utility model discloses the linking problem of old and new road bed has been handled, has reduced the difference between old and new road bed and has subsided, has guaranteed the overall stability and the homogeneity of road bed.
Drawings
FIG. 1 is a schematic structural view of the present invention,
the waterproof soil engineering structure comprises an old base layer 1, an old base layer 2, a new base layer 21, a bottom sand-stone layer 22, soil filling 23, a middle sand-stone layer 24, a filling layer 25, a bidirectional geogrid 26, a waterproof geomembrane 27, a top gravel layer 3, a cover layer 31, a lower surface layer 32, a middle surface layer 33 and an upper surface layer.
Detailed Description
The invention will be further elucidated below by means of non-limiting examples, with the understanding that the invention is not limited thereto.
As shown in fig. 1, the utility model provides a highway extension is with new and old road surface mosaic structure, including old basic unit 1, one side concatenation of old basic unit 1 has new basic unit 2, and old basic unit 1 is multistage echelonment concatenation with new basic unit 2, and the width of every concatenation face is greater than 30 cm. New basic unit 2 includes from down up sets gradually bottom gravel layer 21, fill 22, middle part gravel layer 23, packing layer 24, two-way geogrid 25, waterproof geomembrane 26, top metalling 27 on former subaerial down, fill 22, packing layer 24 and the concatenation of its upper and lower side constitute double-deck drainage structures, can effectively reduce the water content of bottom to improve the compactness and the bulk strength of whole road bed.
Old basic unit 1 is provided with finish coat 3 with the top of new basic unit 2, and the finish coat 3 of new and old basic unit top is unified to be under construction, and construction convenience can effectual assurance construction quality, and finish coat 3 includes from down up lower surface course 31, well surface course 32, the upper surface course 33 that sets gradually. Above-mentioned bituminous porosity size can direct influence bituminous mixture's intensity and high temperature stability, therefore, the utility model discloses well top layer 33 is the fine grain formula modified asphalt concrete top layer that 6cm is thick, guarantees that the superficial layer has sufficient antiskid, wear-resisting and the dense waterborne, and well top layer 32 is among the medium grain polyester amine fibre asphalt concrete that 8cm is thick surface course, has sufficient anti rutting ability, and lower surface course 31 is the lower surface course of the thick coarse grain formula asphalt concrete of 10cm, has sufficient intensity and has the characteristic to the basic unit transition.
The splicing part of the new and old roadbeds is the weak position of the roadbed structure, the utility model increases the contact area between the new and old roadbeds by arranging the multi-stage step-shaped steps, and reduces the shearing stress and the base tensile stress generated at the splicing part; the splicing part plays a role in reinforcing by laying the geosynthetic material, and the compactness of the splicing part is effectively improved.
To sum up, the utility model discloses the linking problem of old and new road bed has been handled, has reduced the difference between old and new road bed and has subsided, has guaranteed the overall stability and the homogeneity of road bed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a highway extension is with new and old road surface mosaic structure, includes old basic unit, its characterized in that: one side concatenation of old basic unit has new basic unit, old basic unit is multistage echelonment concatenation with new basic unit, new basic unit includes from down up setting gradually in former subaerial bottom gravel layer, soil filling, packing layer, top metalling down, be provided with middle part gravel layer between soil filling and the packing layer, be equipped with two-way geogrid between packing layer, the top metalling down, old basic unit is provided with the top facing layer with the top of new basic unit, the top facing layer includes from down lower surface layer, well surface course, the upper surface course that up sets gradually.
2. The new and old pavement splicing structure for highway extension according to claim 1, wherein: the lower surface layer is a coarse-grained asphalt concrete lower surface layer with the thickness of 10cm, the middle surface layer is a medium-grained polyester amine fiber asphalt concrete middle surface layer with the thickness of 8cm, and the upper surface layer is a fine-grained modified asphalt concrete upper surface layer with the thickness of 6 cm.
3. The new and old pavement splicing structure for highway extension according to claim 1, wherein: and a waterproof geomembrane is arranged between the bidirectional geogrid and the top gravel layer.
4. The new and old pavement splicing structure for highway extension according to claim 1, wherein: the width of each splicing surface between the old base layer and the new base layer is larger than 30 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121326904.5U CN214938907U (en) | 2021-06-15 | 2021-06-15 | New and old road surface mosaic structure for highway extension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121326904.5U CN214938907U (en) | 2021-06-15 | 2021-06-15 | New and old road surface mosaic structure for highway extension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214938907U true CN214938907U (en) | 2021-11-30 |
Family
ID=79050727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121326904.5U Expired - Fee Related CN214938907U (en) | 2021-06-15 | 2021-06-15 | New and old road surface mosaic structure for highway extension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214938907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395954A (en) * | 2021-12-31 | 2022-04-26 | 池州市交通规划设计院 | Splicing structure and construction method for new and old road surfaces at ultrahigh section of highway |
-
2021
- 2021-06-15 CN CN202121326904.5U patent/CN214938907U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395954A (en) * | 2021-12-31 | 2022-04-26 | 池州市交通规划设计院 | Splicing structure and construction method for new and old road surfaces at ultrahigh section of highway |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102433819A (en) | Semi-flexible structure permeable street and pavement method thereof | |
| CN106049217A (en) | Assembly type permeable pavement paving c, block bodies and paving structure | |
| CN202787044U (en) | Longitudinal crack treatment structure for bituminous concrete pavement | |
| CN111074715A (en) | Anti-crack roadbed and pavement structure and construction method thereof | |
| CN201296895Y (en) | Vertical cracking pavement repair structure | |
| CN104452510B (en) | Immediate construction method of rural road | |
| CN212452152U (en) | Geotechnique's check room adds muscle cement concrete pavement structure | |
| CN107700299B (en) | Overpass lower-layer ground road structure and construction method thereof | |
| CN214938907U (en) | New and old road surface mosaic structure for highway extension | |
| CN202247596U (en) | Permeable road with semi-flexible structure | |
| CN214782979U (en) | Transition section structure of slate roadbed filler road bridge | |
| CN107558324B (en) | A kind of Steel Fibre Concrete Pavement and its construction technology of tramcar and road usual friendship mouth | |
| CN210529400U (en) | Solidified building residue soil road structure | |
| CN213507862U (en) | Municipal administration road widen structure | |
| CN216551386U (en) | New old bituminous paving basic unit of environment-friendly links up structure | |
| CN213538565U (en) | Road bridge linkage segment becomes rigidity road bed | |
| CN211498338U (en) | Cement asphalt concrete pavement structure | |
| KR20140114711A (en) | Improvement Method for Base Ground of Pavement Block using Light-Weighted Foam Soil | |
| CN206189212U (en) | Along river, roadbed structure that ftractures is prevented on high bank way and concatenation way | |
| CN107858886B (en) | Viaduct foundation peripheral ground road and construction method thereof | |
| CN110670436B (en) | Structure for preventing urban road subgrade from being unevenly settled and construction method thereof | |
| CN211815270U (en) | Quick maintenance structure of road surface infiltration under heavy load traffic | |
| CN204385575U (en) | Fill Reinforced With Geogrids clay bound edge CHARACTERISTICS OF TAILINGS SAND roadbed | |
| CN217266706U (en) | Hot regeneration road surface structure of plantmix | |
| CN105735078B (en) | A kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20211130 |