CN214005300U - New and old road surface overlap joint structure - Google Patents
New and old road surface overlap joint structure Download PDFInfo
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- CN214005300U CN214005300U CN202023043595.9U CN202023043595U CN214005300U CN 214005300 U CN214005300 U CN 214005300U CN 202023043595 U CN202023043595 U CN 202023043595U CN 214005300 U CN214005300 U CN 214005300U
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Abstract
The utility model discloses a new and old road surface overlap joint structure, including old road structure and new road structure, the structural faying surface that is provided with the step form of old road, new road structure includes that the cement that from the bottom up set gradually stabilizes piece basic unit, emulsified asphalt layer, mesomorphic asphalt formula asphalt concrete layer, emulsified asphalt adhesion coating and fine grain formula asphalt concrete layer, and cement stabilizes the piece basic unit emulsified asphalt layer mesomorphic asphalt formula asphalt concrete layer emulsified asphalt adhesion coating with fine grain formula asphalt concrete layer all with the faying surface of old road structure pastes and leans on. The utility model has the advantages that: the compactness of the pavement splicing of the new road and the old road is improved, the water seepage risk is reduced, and the lap joint strength is improved.
Description
Technical Field
The utility model belongs to the technical field of the technique of road structure and specifically relates to a new and old road surface overlap joint structure.
Background
With the development of social economy, the traffic volume of the expressway is increasingly increased, the traffic volume of part of road surfaces of the expressway is saturated, and the congestion phenomenon is serious. The new and old asphalt pavements need to be lapped under most conditions of highway widening, and the lapped joints of the new and old asphalt pavements cannot be embedded, extruded and compacted as hot mixed materials are molded, so that the compacted degree of the lapped joints is low, water seepage is serious, and water damage is easily formed after rainwater is invaded.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a new and old road surface overlap joint structure according to the not enough of above-mentioned prior art, through structural faying face that sets up the step form in old road to paste new road structure and old road structure's faying face and be connected, improve the compactness of the road surface concatenation of new and old road, reduce the infiltration risk.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides a new and old road surface overlap joint structure which characterized in that: including old way structure and new way structure, the structural faying surface that is provided with the step form of old way, the new way structure includes that the cement that from the bottom up set gradually stabilizes the piece basic unit, emulsified asphalt passes through layer, mesomorphic asphalt formula asphalt concrete layer, emulsified asphalt adhesion coating and fine grain formula asphalt concrete layer, and the cement stabilizes the piece basic unit emulsified asphalt passes through the layer mesomorphic asphalt formula asphalt concrete layer emulsified asphalt adhesion coating with fine grain formula asphalt concrete layer all with the faying surface of old way structure pastes and leans on.
The emulsified asphalt transparent layer and the medium particle type asphalt concrete layer are paved with glass fiber grids, one side of each glass fiber grid covers the emulsified asphalt transparent layer, and the other side of each glass fiber grid extends to cover the lap joint surface of the old road structure.
Piece basic unit is stabilized to cement includes that the piece basic unit is stabilized to first cement of upper and lower relative setting stabilizes the piece basic unit and second cement, first cement stabilize the piece basic unit with two-way geogrid has been laid between the piece basic unit is stabilized to second cement, one side of two-way geogrid cover in on the piece basic unit is stabilized to second cement, its opposite side extend cover extremely the faying surface top of old road structure.
The thickness of the first cement stabilized fragment base layer and the second cement stabilized fragment base layer is 17-19 cm, the thickness of the medium particle type asphalt concrete layer is 5-7 cm, and the thickness of the fine particle type asphalt concrete layer is 3-5 cm.
The utility model has the advantages that: the compactness of the pavement splicing of the new road and the old road is improved, the water seepage risk is reduced, and the lap joint strength is improved.
Drawings
Fig. 1 is the structure schematic diagram of the new and old road surface lap joint structure of the utility model.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:
as shown in figure 1, the marks 1-9 in the figure are respectively represented as an old road structure 1, an overlap joint surface 2, a cement stable chip base layer 3, an emulsified asphalt permeable layer 4, a medium particle type asphalt concrete layer 5, an emulsified asphalt adhesive layer 6, a fine particle type asphalt concrete layer 7, a glass fiber grating 8 and a bidirectional geogrid 9.
Example (b): as shown in fig. 1, the embodiment relates to a new and old road surface overlap joint structure, it mainly includes old way structure 1 and new way structure, be provided with step-like faying surface 2 on the old way structure 1, new way structure includes that the cement that from the bottom up set gradually stabilizes the piece basic unit 3, emulsified asphalt priming coat 4, well grain formula asphalt concrete layer 5, emulsified asphalt adhesion layer 6 and fine grain formula asphalt concrete layer 7, and cement stabilizes piece basic unit 3, emulsified asphalt priming coat 4, well grain formula asphalt concrete layer 5, emulsified asphalt adhesion layer 6 and fine grain formula asphalt concrete layer 7 all paste with the faying surface 2 of old way structure 1 and lean on. The cement stabilized chip base layer 3 comprises a first cement stabilized chip base layer and a second cement stabilized chip base layer which are oppositely arranged up and down. The thickness of the first cement stabilized fragment base layer and the thickness of the second cement stabilized fragment base layer are both 17-19 cm, the thickness of the medium particle type asphalt concrete layer 5 is 5-7 cm, and the thickness of the fine particle type asphalt concrete layer 7 is 3-5 cm.
As shown in figure 1, a glass fiber grating 8 is laid between the emulsified asphalt permeable layer 4 and the medium-grain asphalt concrete layer 5, one side of the glass fiber grating 8 partially covers the emulsified asphalt permeable layer 4, and the other side of the glass fiber grating extends to cover the upper part of the lapping surface 2 of the old road structure 1, and the medium-grain asphalt concrete layer 5 can be compacted by the glass fiber grating 8, so that the road surface is strengthened, and the bearing load of the road surface is improved. Two-way geogrid 9 has been laid between piece basic unit and the stable piece base course of second cement to first cement, and one side of two-way geogrid 9 covers on the stable piece basic unit of second cement, its opposite side extends to cover 2 tops of faying surface to old road structure 1, and the setting of two-way geogrid 9 can the stable piece basic unit of first cement of compaction, has improved the stability of stable piece basic unit 3 of cement.
In this embodiment, the thickness of the first cement stabilized patch base layer and the thickness of the second cement stabilized patch base layer are both 18cm, the thickness of the medium particle type asphalt concrete layer 5 is 6cm, and the thickness of the fine particle type asphalt concrete layer 7 is 4 cm. The maximum elongation of the glass fiber grating 8 is less than or equal to 3 percent, the elastic modulus is 67GPa, the temperature resistance is-100-280 ℃, the longitudinal and transverse tensile strength is more than or equal to 50kN/m, and the grid size is 12 mm-20 mm. The unit area weight of the bidirectional geogrid 9 is 400g/m, the longitudinal and transverse tensile strength is more than or equal to 30kN/m, and the maximum elongation is less than or equal to 16%.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description thereof is not repeated herein.
Claims (4)
1. The utility model provides a new and old road surface overlap joint structure which characterized in that: including old way structure and new way structure, the structural faying surface that is provided with the step form of old way, the new way structure includes that the cement that from the bottom up set gradually stabilizes the piece basic unit, emulsified asphalt passes through layer, mesomorphic asphalt formula asphalt concrete layer, emulsified asphalt adhesion coating and fine grain formula asphalt concrete layer, and the cement stabilizes the piece basic unit emulsified asphalt passes through the layer mesomorphic asphalt formula asphalt concrete layer emulsified asphalt adhesion coating with fine grain formula asphalt concrete layer all with the faying surface of old way structure pastes and leans on.
2. The new and old pavement overlapping structure according to claim 1, characterized in that: the emulsified asphalt transparent layer and the medium particle type asphalt concrete layer are paved with glass fiber grids, one side of each glass fiber grid covers the emulsified asphalt transparent layer, and the other side of each glass fiber grid extends to cover the lap joint surface of the old road structure.
3. The new and old pavement overlapping structure according to claim 1, characterized in that: piece basic unit is stabilized to cement includes that the piece basic unit is stabilized to first cement of upper and lower relative setting stabilizes the piece basic unit and second cement, first cement stabilize the piece basic unit with two-way geogrid has been laid between the piece basic unit is stabilized to second cement, one side of two-way geogrid cover in on the piece basic unit is stabilized to second cement, its opposite side extend cover extremely the faying surface top of old road structure.
4. A new and old pavement overlapping structure according to claim 3, characterized in that: the thickness of the first cement stabilized fragment base layer and the second cement stabilized fragment base layer is 17-19 cm, the thickness of the medium particle type asphalt concrete layer is 5-7 cm, and the thickness of the fine particle type asphalt concrete layer is 3-5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023043595.9U CN214005300U (en) | 2020-12-17 | 2020-12-17 | New and old road surface overlap joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023043595.9U CN214005300U (en) | 2020-12-17 | 2020-12-17 | New and old road surface overlap joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214005300U true CN214005300U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023043595.9U Active CN214005300U (en) | 2020-12-17 | 2020-12-17 | New and old road surface overlap joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214005300U (en) |
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2020
- 2020-12-17 CN CN202023043595.9U patent/CN214005300U/en active Active
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