CN215668820U - New and old bituminous paving meets structure - Google Patents
New and old bituminous paving meets structure Download PDFInfo
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- CN215668820U CN215668820U CN202122019821.8U CN202122019821U CN215668820U CN 215668820 U CN215668820 U CN 215668820U CN 202122019821 U CN202122019821 U CN 202122019821U CN 215668820 U CN215668820 U CN 215668820U
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Abstract
The utility model discloses a new and old asphalt pavement connecting structure, which relates to the field of pavement construction and comprises an old pavement structure and a new pavement structure, wherein the old pavement structure is connected with the new pavement structure, and a connecting layer is arranged at the joint of the new pavement structure and the old pavement structure. The tie coat that is equipped with between the new and old road surface of this application makes the cohesion on new and old road surface stronger, can reduce the possibility that the fracture appears appearing between new road surface and the old road surface.
Description
Technical Field
The utility model relates to the field of pavement construction, in particular to a new and old asphalt pavement connecting structure.
Background
Along with the development of social economy, the demand of municipal roads is increasing day by day, the municipal roads constructed in the early stage are difficult to meet the growth of modern traffic and the demand of the development of social economy nowadays, and in order to solve the phenomenon, the original roads are widened and reformed. However, in the process of road widening, the bonding force of the joint of the new road surface and the old road surface cannot be as firm as that of the hot mixed material during molding, the bonding force is poor, and the road surface is easy to crack.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects that the binding force of the new and old asphalt pavements is poor and the pavements are easy to crack, the application provides a new and old asphalt pavement connecting structure.
The new and old asphalt pavement connection structure adopts the following technical scheme:
the utility model provides a new and old bituminous paving meets structure, includes old road surface structure and new road surface structure, old road surface structure meets with new road surface structure, the junction of new road surface structure and old road surface structure is equipped with the articulamentum.
By adopting the technical scheme, the connecting layer is paved on the new road surface structure and the old road surface, the binding force between the new road surface and the old road surface can be enhanced, and the possibility of cracking at the joint of the new road surface and the old road surface is reduced.
Optionally, one side of the old pavement structure to be widened is provided with a faying surface which is a continuous step, and the new pavement structure is connected with the old pavement through the faying surface of the continuous step.
Through adopting above-mentioned technical scheme, set up the faying surface of old road surface structure into continuous step form, make lapped new road surface structure cross connection to old road surface structural on, can further strengthen the anti shape of subsiding of new road surface structure, reduce new road surface structure and take place to subside and the possibility that old road surface structure breaks away from.
Optionally, old road surface structure is by supreme old road surface subbase layer and old road surface basic unit and the old road surface layer of including down, new road surface structure is by supreme new road surface subbase layer and new road surface basic unit and the new road surface layer of including down, new surface layer structure and old surface layer structure are located same high layer fixed connection.
By adopting the technical scheme, the surface layers of the new pavement structure are sequentially lapped with the surface layers of the old pavement structure, so that the new pavement structure and the old pavement structure have the same level.
Optionally, the new pavement surface layer includes an asphalt concrete layer and an asphalt mastic stone layer, and the asphalt mastic stone layer is laid on the asphalt concrete layer.
Through adopting above-mentioned technical scheme, use pitch mastic stone layer as new road surface structure road surface layer, can make the road surface have the advantage of antiskid wear-resisting and closely knit durable and reduction low temperature fracture, lay one deck asphalt concrete and can also practice thrift the cost when can increase surface course thickness under pitch mastic stone layer.
Optionally, the connection layer is located on the old pavement base layer and the faying surface of the old pavement surface layer, and the new pavement surface layer is connected with the connection layer.
Through adopting above-mentioned technical scheme, the tie layer can increase the cohesion between new road surface layer and the old road surface layer, reduces because heavy truck rolls and leads to the cracked possibility of new and old road surface layer.
Optionally, a slurry seal is fixedly arranged on the new pavement base layer, and the new pavement surface is laid on the slurry seal.
Through adopting above-mentioned technical scheme, use the thin paste seal can make the cohesion between new road surface basic unit and the new road surface layer stronger, can also play waterproof effect simultaneously.
Optionally, a plurality of fixing pieces are arranged at the joint of the new pavement bottom base layer and the old pavement bottom base layer, one end of each fixing piece is embedded in the old pavement bottom base layer, and the other end of each fixing piece is embedded in the new pavement bottom base layer.
Through adopting above-mentioned technical scheme, the mounting can make and be connected more firmly between new pavement base course and the old pavement subbase, can avoid new pavement base course and the fracture to appear in the junction of old pavement subbase.
Optionally, a plurality of fixing pieces are arranged at the joint of the new pavement base and the old pavement base, one end of each fixing piece is embedded in the old pavement base, and the other end of each fixing piece is embedded in the new pavement base.
Through adopting above-mentioned technical scheme, the mounting can make and be connected more firmly between new road surface basic unit and the old road surface basic unit, can avoid new road surface basic unit and the fracture to appear in the junction of old road surface basic unit.
Optionally, the lapping surface includes a horizontal surface and a vertical surface, and the old pavement sub-base layer and the old pavement base layer are respectively provided with a plurality of grooves perpendicular to the vertical surface of the lapping surface on the side close to the to-be-widened side.
Through adopting above-mentioned technical scheme, bury the one end of mounting in the slot that sets up on old road surface subbase and old road surface basic unit, can make the mounting bury underground more firmly, increase the life of mounting.
Optionally, a waterproof layer is fixedly arranged at the joint of the new pavement base layer and the old pavement base layer, and the waterproof layer is located below the connecting layer and the slurry seal layer.
Through adopting above-mentioned technical scheme, use the waterproof layer to cover the junction of new road surface basic unit and old road surface basic unit, can block the rainwater that permeates into from the junction of new and old road surface, played waterproof effect well.
In summary, the present application includes at least one of the following benefits:
1. the connecting layer is laid at the joint of the old road surface and the new road surface, so that the bonding force between the new road surface structure and the old road surface structure can be enhanced, the service life of the new road surface structure lapped on the old road surface structure is prolonged, and a waterproof effect can be achieved;
2. the lapping surface of the old pavement structure is set to be continuous step-shaped, so that the lapped new pavement structure is connected to the old pavement structure in a staggered manner, the anti-sedimentation shape of the new pavement structure can be further enhanced, and the possibility of sedimentation and detachment of the old pavement structure of the new pavement structure is reduced.
Drawings
Fig. 1 is a schematic view of the joint structure of new and old asphalt pavements in the embodiment of the present application.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Description of reference numerals:
1. a roadbed; 2. an old pavement structure; 21. an old pavement sub-base layer; 22. old pavement base course; 23. an old pavement top coat; 24. a lapping surface; 25. a trench; 26. a connecting layer; 3. a new pavement structure; 31. a new pavement bottom base layer; 32. a new pavement base layer; 33. slurry sealing; 34. a new pavement layer; 341. an asphalt concrete layer; 342. a mastic asphalt layer; 4. a fixing member; 5. and a waterproof layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses new and old bituminous paving meets structure. Referring to fig. 1, a new and old asphalt pavement joining structure includes an old pavement structure 2 and a new pavement structure 3, and the old pavement structure 2 includes an old pavement sub-base 21 and an old pavement base 22 laid on a roadbed 1 in sequence from bottom to top, and an old pavement surface 23. The new pavement structure 3 includes a new pavement base 31, a new pavement base 32, and a new pavement surface 34 laid on the roadbed 1 in this order from bottom to top. In order to reduce the possibility of the new pavement structure 3 settling and the old pavement structure 2 breaking away, the respective surface layers of the old pavement structure 2 are planed to form step-like faying surfaces 24, so that the respective surface layers of the new pavement structure 3 are connected to the old pavement structure 2 in a staggered manner.
Referring to fig. 1, the new road surface layer 34 includes an asphalt concrete layer 341 and an asphalt mastic gravel layer 342, in this embodiment, the asphalt concrete layer 341 uses asphalt concrete AC-20, the asphalt mastic gravel layer 342 uses asphalt mastic gravel SMA-13, the asphalt mastic gravel layer 342 is laid on the asphalt concrete layer 341, and the asphalt mastic gravel layer 342 is used as a road surface, so that the road surface has the advantages of skid resistance, wear resistance, compactness, durability, and reduction of low-temperature cracking. The asphalt concrete layer 341 is connected with the new pavement base layer 32, a slurry seal layer 33 is laid between the asphalt concrete layer 341 and the new pavement base layer 32, the slurry seal layer 33 in the embodiment is formed by hardening emulsified asphalt slurry, and the slurry seal layer 33 can enhance the binding force between the asphalt concrete layer 341 and the new pavement base layer 32 and can also play a role in water prevention. One connecting layer 26 is laid on the old pavement base layer 22 and the lapping surface 24 of the old pavement surface layer 23 and is connected with the slurry seal layer 33, so that the bonding force between the new pavement surface layer 34 and the old pavement structure 2 is stronger, the fracture between the new pavement and the old pavement can be reduced, and the SBS modified asphalt is used as the connecting layer 26 in the embodiment and has a waterproof effect.
Referring to fig. 1 and 2, a plurality of fixing members 4 are embedded at the junction between a new road surface base layer 31 and an old road surface base layer 21, in this embodiment, the fixing members 4 are steel bars, a plurality of grooves 25 perpendicular to the faying surface 24 are chiseled on the side of the old road surface base layer 21 close to the faying surface 24, one end of each fixing member 4 is embedded in the groove 25 of the road surface base layer 21 and the other end is embedded in the new road surface base layer 31, a plurality of fixing members 4 are embedded in the new road surface base layer 32 and the old road surface base layer 22 in the same manner as described above, a waterproof layer 5 is fixedly attached to the junction between the new road surface base layer 32 and the old road surface base layer 22, in this embodiment, a high polymer modified asphalt waterproof coil is used as the waterproof layer 5, both ends of the waterproof layer 5 are respectively located on the new road surface base layer 32 and the old road surface base layer 22 and under the grout seal 33 and the junction 26, the waterproof layer 5 can prevent rainwater from penetrating from the junction between the new road surface and the old road surface, the soaking of rainwater to the junction of new and old road surfaces is reduced as much as possible. In this example, the new pavement sub-base 31 is made of 4% cement stabilized graded gravel, and the new pavement base 32 is made of 5.5% cement stabilized graded gravel.
Referring to fig. 1 and 2, the two ends of the fixing member 4 are provided with the inserting parts 41 perpendicular to the fixing member 4, in other embodiments, the inserting parts 41 of the fixing member 4 located in the new road surface base layer 31 and the old road surface base layer 21 can penetrate through the new road surface base layer 31 and the old road surface base layer 21 and be inserted into the roadbed 1, the inserting parts 41 of the fixing member 4 located in the new road surface base layer 32 and the old road surface base layer 22 can penetrate through the new road surface base layer 32 and the old road surface base layer 22 and be inserted into the old road surface base layer 21, not only can the same-height level fixed connection be realized, but also the longitudinal different level fixed connection can be realized, the integrity of the new and old road surface structures is enhanced, and the new and old road surface structures are connected more firmly.
The construction method of the new and old asphalt pavement connecting structure comprises the following steps: when carrying out new and old road surface overlap joint, earlier dig out a echelonment faying face 24 with old road surface structure 2, and clean faying face 24, a plurality of and faying face 24 vertically's slot 25 has been seted up to old road surface subbase 21 near faying face 24 one end, place the one end of mounting 4 in slot 25 and the other end extends old road surface subbase 21, seal slot 25 with cement, lay new road surface subbase 31 and overlap joint with old road surface subbase 21 on road bed 1, bury mounting 4 in new road surface subbase 31 simultaneously, set up the same slot 25 on old road surface subbase 22 and place the one end of mounting 4 with slot 25, seal slot 25 with cement, lay new road surface basic unit 32 and overlap joint with road surface basic unit 22 at new road surface subbase 31 and old road surface subbase 21, mounting 4 buries underground in new road surface basic unit 32. The method comprises the steps of pasting a waterproof layer 5 at the joint of a new pavement base layer 32 and an old pavement base layer 22, paving a layer of emulsified asphalt slurry on the new pavement base layer 32 to form a slurry seal layer 33 after the emulsified asphalt slurry is hardened, covering the waterproof layer 5 pasted on the new pavement base layer 32 by the slurry seal layer 33, spraying a connecting layer 26 on the lapping surface 24 of the old pavement base layer 22 and the old pavement surface layer 23, paving an asphalt concrete layer 341 on the new pavement base layer 32 and the old pavement base layer 22 to lap the old pavement surface layer 23, and paving an asphalt mastic gravel layer 342 on the asphalt concrete layer 341 to lap the old pavement surface layer 23.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a new and old bituminous paving meets structure, includes old road surface structure (2) and new road surface structure (3), its characterized in that: the old pavement structure (2) is connected with the new pavement structure (3), and a connecting layer (26) is arranged at the joint of the new pavement structure (3) and the old pavement structure (2).
2. The new and old asphalt pavement connecting structure according to claim 1, characterized in that: one side of the old road surface structure (2) to be widened is provided with a lapping surface (24) which is a continuous step, and the new road surface structure (3) is connected with the old road surface (2) through the lapping surface (24) of the continuous step.
3. The new and old asphalt pavement connecting structure according to claim 2, wherein: old road surface structure (2) are by supreme old road surface subbase layer (21) and old road surface basic unit (22) and old road surface layer (23) of including down, new road surface structure (3) are by supreme new road surface subbase layer (31) and new road surface basic unit (32) and new road surface layer (34) of including down, new road surface structure (3) are located same high layer fixed connection with old road surface structure (2).
4. The new and old asphalt pavement connecting structure according to claim 3, wherein: the new pavement layer (34) comprises an asphalt concrete layer (341) and an asphalt mastic gravel layer (342), and the asphalt mastic gravel layer (342) is laid on the asphalt concrete layer (341).
5. The new and old asphalt pavement connecting structure according to claim 4, wherein: the connecting layer (26) is positioned on the old pavement base layer (22) and the lapping surface (24) of the old pavement surface layer (23), and the new pavement surface layer (34) is connected with the connecting layer (26).
6. The new and old asphalt pavement connecting structure according to claim 5, wherein: a slurry seal layer (33) is fixedly arranged on the new pavement base layer (32), and the new pavement surface layer (34) is paved on the slurry seal layer (33).
7. The new and old asphalt pavement connecting structure according to claim 6, wherein: the junction of new road surface subbase layer (31) and old road surface subbase layer (21) is equipped with a plurality of mounting (4), the one end of mounting (4) is buried underground in old road surface subbase layer (21) and the other end is buried underground in new road surface subbase layer (31).
8. The new and old asphalt pavement connecting structure according to claim 7, wherein: a plurality of fixing pieces (4) are arranged at the joint of the new pavement base (32) and the old pavement base (22), one end of each fixing piece (4) is embedded in the old pavement base (22) and the other end of each fixing piece is embedded in the new pavement base (32).
9. The new and old asphalt pavement connecting structure according to claim 8, wherein: the lapping surface (24) comprises a horizontal plane and a vertical plane, and a plurality of grooves (25) vertical to the vertical plane of the lapping surface (24) are respectively arranged on one sides, close to the side to be widened, of the old pavement sub-base layer (21) and the old pavement base layer (22).
10. The new and old asphalt pavement connecting structure according to claim 9, wherein: a waterproof layer (5) is fixedly arranged at the joint of the new pavement base layer (32) and the old pavement base layer (22), and the waterproof layer (5) is positioned below the connecting layer (26) and the slurry seal layer (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019821.8U CN215668820U (en) | 2021-08-25 | 2021-08-25 | New and old bituminous paving meets structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019821.8U CN215668820U (en) | 2021-08-25 | 2021-08-25 | New and old bituminous paving meets structure |
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| Publication Number | Publication Date |
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| CN215668820U true CN215668820U (en) | 2022-01-28 |
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| CN202122019821.8U Active CN215668820U (en) | 2021-08-25 | 2021-08-25 | New and old bituminous paving meets structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855532A (en) * | 2022-04-15 | 2022-08-05 | 重庆昂然建筑工程有限公司 | Reconstruction construction method for old road in rural area |
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2021
- 2021-08-25 CN CN202122019821.8U patent/CN215668820U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855532A (en) * | 2022-04-15 | 2022-08-05 | 重庆昂然建筑工程有限公司 | Reconstruction construction method for old road in rural area |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 16-8, No.16, Jianxin South Road, Jiangbei District, Chongqing 400020 Patentee after: Xiheng Engineering Consulting Group Co.,Ltd. Address before: 16-8, No.16, Jianxin South Road, Jiangbei District, Chongqing 400020 Patentee before: Chongqing xiheng Engineering Consulting Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |