CN212077527U - Asphalt composite road pavement structure - Google Patents
Asphalt composite road pavement structure Download PDFInfo
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- CN212077527U CN212077527U CN202020436566.XU CN202020436566U CN212077527U CN 212077527 U CN212077527 U CN 212077527U CN 202020436566 U CN202020436566 U CN 202020436566U CN 212077527 U CN212077527 U CN 212077527U
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Abstract
The utility model relates to a pitch combined type road surface structure. The pavement structure comprises a main pavement structure and a sidewalk pavement structure; the main road pavement structure sequentially comprises a road base layer, a first cement stabilization weathered layer, a second cement stabilization gravel layer, a first cement stabilization gravel layer, a permeable layer, a glass fiber geogrid layer, a coarse-grain asphalt layer, a medium-grain asphalt layer and an asphalt mastic gravel layer from bottom to top; the pavement structure of the pavement comprises a road base layer, a second cement-stabilized weathered layer, a third cement-stabilized gravel layer, a cement mortar leveling layer and a pavement panel layer from bottom to top, and further comprises an inner vertical edge stone and an outer vertical edge stone; the inner vertical edge stone is arranged above the outer side edge of the first cement stabilization gravel layer, the outer side edge of the first cement stabilization gravel layer is in lap joint with the inner side edge of the second cement stabilization weathering layer, and the second cement stabilization weathering layer is located above the second cement stabilization weathering layer. The utility model discloses structural strength is high, long service life, maintenance cost are low.
Description
Technical Field
The utility model belongs to the technical field of the road construction, especially, relate to a pitch combined type road surface structure.
Background
Municipal works refer to municipal facility construction works, municipal facilities in China refer to various buildings, structures, equipment and the like which are arranged in urban areas and town planning construction ranges and provide paid or unpaid public products and services for residents based on government responsibilities and obligations, and various public infrastructure constructions matched with urban lives belong to the municipal engineering categories, such as common urban roads, bridges and subways, such as various pipelines closely related to life: rainwater, sewage, water supply, reclaimed water, electric power, telecommunication, heating power, gas and the like, and the construction of squares, urban greening and the like belong to the municipal engineering category.
The asphalt composite road pavement is an important content in urban road municipal engineering, and the municipal road needs to meet daily traffic of non-motor vehicles and pedestrians due to more vehicles, so that higher requirements are provided for the structural strength of the road pavement. Therefore, the asphalt road pavement structure with a single structure is difficult to meet the increasing requirements, and in order to solve the problems of pavement damage, cracking and the like, the composite pavement structure needs to be developed and designed, so that a novel asphalt composite road pavement structure is provided, the service life of the municipal road is prolonged, and the road maintenance cost is reduced. On the other hand, in the conventional town road pavement structure, the joint position of the main body part of the road and the lateral sidewalk part is not properly processed, so that the structural strength of the joint position is obviously reduced compared with that of other positions, and the problem of collapse of the edge position of the road is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bituminous composite road surface structure with high structural strength, long service life and low maintenance cost for solving the technical problems existing in the prior art.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a bituminous composite road pavement structure comprises a main road pavement structure and a sidewalk pavement structure; the main road pavement structure sequentially comprises a road base layer, a first cement stabilization weathered layer, a second cement stabilization gravel layer, a first cement stabilization gravel layer, a permeable layer, a glass fiber geogrid layer, a coarse-grain asphalt layer, a medium-grain asphalt layer and an asphalt mastic gravel layer from bottom to top; the pavement structure of the pavement comprises a road base layer, a second cement-stabilized weathered layer, a third cement-stabilized gravel layer, a cement mortar leveling layer and a pavement panel layer from bottom to top, and further comprises an inner vertical edge stone and an outer vertical edge stone; the inner vertical edge stone is arranged above the outer side edge of the first cement stable gravel layer, the outer side edge of the first cement stable gravel layer is in lap joint with the inner side edge of the second cement stable weathered layer, and the second cement stable weathered layer is positioned above the second cement stable weathered layer; the outer edge of the first cement-stabilized gravel layer is located on the outer side of the outer vertical surface of the inner vertical edge stone and has a distance a, the outer edge of the second cement-stabilized gravel layer is located on the outer side of the outer edge of the first cement-stabilized gravel layer and has a distance b, and the outer edge of the first cement-stabilized weathered layer is located on the outer side of the outer edge of the second cement-stabilized gravel layer and has a distance c.
The utility model has the advantages that: the utility model provides a structural design's combined type road surface structure of pitch compares with current combined type road surface structure, the utility model discloses in through optimizing main road surface structure and pavement surface structure component structure between them, promoted respective structural strength. By setting the lap construction between the main road surface structure and the sidewalk road surface structure, the structural strength of the edge position of the main road surface (namely the position of the boundary with the sidewalk road surface) is improved, and the problems that the existing municipal road surface structure is easy to collapse and crack at the edge position of the main road surface are solved. The asphalt composite road pavement structure has long service life, and does not need to invest in excessive municipal road maintenance work, so the maintenance cost is low.
Preferably: an inner cement mortar horizontal bottom layer is arranged between the bottom of the inner vertical edge stone and the first cement stable gravel layer; the outer side vertical edge stone is located above the outer side edge of the second cement stabilization weathered layer, the outer side edge of the second cement stabilization weathered layer is located on the outer side of the outer vertical surface of the outer side vertical edge stone and has a distance d, and an outer side cement mortar horizontal bottom layer is arranged between the outer side vertical edge stone and the second cement stabilization weathered layer.
Preferably: the outer side of the outer side vertical edge stone is provided with a supporting body, the bottom edge of the supporting body is flush with the bottom edge of the outer side cement mortar horizontal bottom layer, and the top edge of the supporting body is flush with the middle part of the outer side vertical edge stone.
Preferably: the distances a, b, c and d are equal, and are all more than or equal to 15cm and less than or equal to 25 cm.
Preferably: the thickness of the first cement stabilization weathered layer is 20cm, the thickness of the second cement stabilization gravel layer is 18cm, the thickness of the first cement stabilization gravel layer is 18cm, the thickness of the coarse particle asphalt layer is 6cm, the thickness of the medium particle asphalt layer is 5cm, and the thickness of the asphalt mastic gravel layer is 4 cm.
Preferably: the thickness of the second cement stabilization weathered layer is 20cm, the thickness of the third cement stabilization gravel layer is 18cm, the thickness of the cement mortar leveling layer is 2cm, and the granite road plate with the thickness of 3cm is selected as the pavement panel layer.
Preferably: the permeable layer is paved by emulsified asphalt material, and the dosage is 1.2L per square meter.
Preferably: the supporting body is made of concrete and is obtained by casting and molding in situ.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
In the figure: 1. a mastic asphalt layer; 2. a medium pitch layer; 3. a coarse asphalt layer; 4. a fiberglass geogrid layer; 5. a transparent layer; 6. a first cement stabilized rubble layer; 7. a second cement stabilized rubble layer; 8. a first cement stabilization weathered layer; 9. a roadbed layer; 10. the inner side cement mortar horizontal bottom layer; 11. an inner vertical edge stone; 12. a sidewalk panel layer; 13. leveling layer of cement mortar; 14. a third cement stabilized rubble layer; 15. a second cement stabilization weathered layer; 16. the outer side cement mortar horizontal bottom layer; 17. an outer vertical edge stone; 18. a support body.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are described in detail.
Referring to fig. 1, the asphalt composite road pavement structure of the present invention includes a main road pavement structure and a sidewalk pavement structure. The pavement structure of the sidewalk is positioned on the side of the main road surface structure, and a part of the complete pavement structure is shown in the figure.
The main road pavement structure comprises a road base layer 9, a first cement stabilized weathered layer 8, a second cement stabilized gravel layer 7, a first cement stabilized gravel layer 6, a permeable layer 5, a glass fiber geogrid layer 4, a coarse-grained asphalt layer 3, a medium-grained asphalt layer 2 and an asphalt mastic gravel layer 1 from bottom to top in sequence. Above-mentioned each layer successive layer is laid the construction, and in this embodiment, the thickness of the weathering layer 8 is stabilized to first cement is 20cm, and the thickness of the rubble layer 7 is stabilized to second cement is 18cm, and the thickness of the rubble layer 6 is stabilized to first cement is 18cm, and the thickness on coarse grain pitch layer 3 is 6cm, and the thickness on medium particle pitch layer 2 is 5cm, and the thickness on pitch mastic layer 1 is 4 cm. The road bed layer 9 has a degree of compaction of 96% or more.
In the embodiment, the permeable layer 5 is paved by emulsified asphalt, and the dosage is 1.2L per square meter.
The pavement structure of the pavement comprises a road base layer 9, a second cement stabilized weathered layer 15, a third cement stabilized gravel layer 14, a cement mortar leveling layer 13 and a pavement panel layer 12 from bottom to top, and further comprises an inner vertical edge stone 11 and an outer vertical edge stone 17. In the embodiment of the layer-by-layer paving construction, the thickness of the second cement stabilization weathered layer 15 is 20cm, the thickness of the third cement stabilization gravel layer 14 is 18cm, the thickness of the cement mortar leveling layer 13 is 2cm, and the granite road plate with the thickness of 3cm is selected as the pavement panel layer 12. The road bed layer 9 has a degree of compaction of 93% or more.
As shown in the figure, the inner side vertical edge stone 11 is arranged above the outer side edge of the first cement stabilization gravel layer 6, the outer side edge of the first cement stabilization gravel layer 6 is in lap joint with the inner side edge of the second cement stabilization weathering layer 15, and the second cement stabilization weathering layer 15 is located above.
The outer edge of the first cement stabilized gravel layer 6 is positioned on the outer side of the outer vertical surface of the inner vertical edge stone 11 and has a distance a, the outer edge of the second cement stabilized gravel layer 7 is positioned on the outer side of the outer edge of the first cement stabilized gravel layer 6 and has a distance b, and the outer edge of the first cement stabilized weathered layer 8 is positioned on the outer side of the outer edge of the second cement stabilized gravel layer 7 and has a distance c. In the present embodiment, the distances a, b, and c are equal to each other, and are each 15cm to 25cm, preferably 20 cm.
An inner cement mortar horizontal bottom layer 10 is arranged between the bottom of the inner vertical edge stone 11 and the first cement stable gravel layer 6; the outer side vertical edge stone 17 is positioned above the outer side edge of the second cement stabilization weathering layer 15, the outer side edge of the second cement stabilization weathering layer 15 is positioned on the outer side of the outer vertical surface of the outer side vertical edge stone 17 and has a distance d, and an outer side cement mortar lying bottom layer 16 is arranged between the outer side vertical edge stone 17 and the second cement stabilization weathering layer 15. The inner cement mortar horizontal bottom layer 10 and the outer cement mortar horizontal bottom layer 16 are used for bonding and fixing the inner vertical edge stone 11 and the outer vertical edge stone 17 respectively.
The inner side vertical edge stone 11 and the outer side vertical edge stone 17 are both made of granite, and the exposed surface is polished to improve the attractiveness. As shown in the figure, the surface of the mastic asphalt stone layer 1 is flush with the middle of the inner side vertical edge stone 11, the inner side edge of the pavement panel layer 12 is flush with the top of the inner side vertical edge stone 11, and the outer side edge is flush with the middle of the outer side vertical edge stone 17.
In this embodiment, the supporting body 18 is provided on the outer side of the outer vertical edge stone 17, the supporting body 18 supports the outer vertical edge stone 17 from the outer side to prevent the outer vertical edge stone 17 from collapsing obliquely to the outer side, the bottom edge of the supporting body 18 is flush with the bottom edge of the outer cement mortar lying bottom layer 16 (i.e., the bottom of the supporting body 18 is also placed on the second cement stabilization layer 15), and the top edge is flush with the middle of the outer vertical edge stone 17.
In this embodiment, the supporting body 18 is made of concrete and is formed by cast-in-place molding, that is, cast-in-place concrete molding is performed after the outside vertical edge stones 17 are assembled one by one.
The first cement stabilization weathered layer 8, the second cement stabilization weathered layer 15, the first cement stabilization gravel layer 6, the second cement stabilization gravel layer 7, the third cement stabilization gravel layer 14, the permeable layer 5, the glass fiber geogrid layer 4, the coarse-grained asphalt layer 3, the medium-grained asphalt layer 2, the asphalt mastic gravel layer 1, the cement mortar leveling layer 13, the inner cement mortar horizontal bottom layer 10 and the outer cement mortar horizontal bottom layer 16 are all construction material layers known in the prior art. The concrete description is as follows:
the first cement-stabilized weathering layer 8 and the second cement-stabilized weathering layer 15 are completely consistent in material composition, and refer to a mixture formed by mixing three materials of weathered rock particles, cement and water in a certain proportion.
The first cement-stabilized rubble layer 6, the second cement-stabilized rubble layer 7 and the third cement-stabilized rubble layer 14 are completely consistent in material composition, and refer to a mixture formed by mixing three materials of rubble, cement and water according to a certain proportion.
The strike-through layer 5 is an organic binder strike-through layer applied to the surface of an inorganic binder substrate for interlayer processing between the underlying layer and the substrate in a general road section. The main functions of the permeable layer 5 are as follows: (1) permeating pores on the surface of the base layer to enhance the bonding between the base layer and the surface layer; (2) help to bind fines in aggregate on the surface of the base course; (3) after the base layer is paved, the penetrating layer oil is timely sprayed, so that the health maintenance cost of the base layer can be reduced, and the health maintenance quality is improved; (4) the open pores on the surface of the base layer formed by penetrating the layer oil are filled, so that a waterproof layer with a penetrating depth is obtained; (5) under the condition that the pavement of the surface layer is delayed for some reason, the permeable layer can provide temporary protective measures for the base layer, and prevent the damage of rainfall and temporary driving.
The coarse-grained asphalt layer 3 and the medium-grained asphalt layer 2 are both made of asphalt concrete, and according to the reference numerals given in the specification, the reference numeral selected by the coarse-grained asphalt layer 3 is coarse-grained asphalt concrete (AC-25II), and the reference numeral selected by the medium-grained asphalt layer 2 is medium-grained asphalt concrete (AC-20I).
The asphalt mastic stone layer 1 is made of a framework dense structure type asphalt mixture composed of high-content coarse aggregates, high-content mineral powder, larger asphalt dosage and low-content medium-particle-size particles. The composition characteristics mainly comprise two aspects: (1) the coarse aggregates with more content are mutually interlocked to form a structural framework with high stability (strong deformation resistance); (2) the framework is cemented together by the mastic asphalt composed of fine aggregate powder, asphalt and fiber stabilizer, and the gap of the framework is filled, so that the mixture has better flexibility and durability. The mastic asphalt layer 1 was selected under the reference number given in the specification as (SMA-13).
The cement mortar leveling layer 13, the inner cement mortar horizontal bottom layer 10 and the outer cement mortar horizontal bottom layer 16 are cement mortar materials commonly adopted in road construction, the cement mortar is prepared from cement, fine aggregate and water according to requirements, the proportion of the cement mortar leveling layer 13 is generally 1:2, namely the proportion of the cement to the sand is 1:2, and the proportion of the inner cement mortar horizontal bottom layer 10 and the outer cement mortar horizontal bottom layer 16 is generally 1:2.5, namely the proportion of the cement to the sand is 1: 2.5.
The construction steps are as follows:
(1) excavating and compacting the roadbed to form a roadbed layer 9 of the main road pavement structure;
(2) constructing from bottom to top in a roadbed area of the main road to obtain a first cement stabilized weathered layer 8, a second cement stabilized gravel layer 7 and a first cement stabilized gravel layer 6, wherein width shrinkage of c and b is formed between two adjacent layers at the edge;
(3) backfilling a roadbed foundation pit of the pavement area of the pavement, compacting to form a roadbed layer 9 of the pavement structure part of the pavement, wherein the top surface of the roadbed layer 9 is approximately flush with the middle part of the first cement stabilized gravel layer 6;
(4) constructing an inner vertical edge stone 11 at the outer edge of the first cement stable gravel layer 6 by adopting an inner cement mortar horizontal bottom layer 10, and reserving a width shrinkage of a between the outer vertical surface of the inner vertical edge stone 11 and the outer edge of the first cement stable gravel layer 6;
(5) constructing layer by layer on the inner side of the inner vertical edge stone 11 and above the first cement-stabilized rubble layer 6 to obtain a permeable layer 5, a glass fiber geogrid layer 4, a coarse-grained asphalt layer 3, a medium-grained asphalt layer 2 and an asphalt mastic rubble layer 1;
(6) constructing a second cement stabilized weathering layer 15 on the roadbed layer 9 of the pavement structure of the sidewalk, wherein the inner side edge of the second cement stabilized weathering layer 15 is lapped above the outer side edge of the first cement stabilized gravel layer 6, namely the top surface of the first cement stabilized gravel layer 6 is approximately flush with the middle part of the second cement stabilized weathering layer 15;
(7) the width shrinkage d is carried out at the outer edge of the second cement stabilization weathered layer 15, an outer side cement mortar horizontal bottom layer 16 is adopted to construct an outer side vertical edge stone 17, and concrete is cast in situ at the outer side of the outer side vertical edge stone 17 to form a support body 18;
(8) constructing from bottom to top between the inner vertical edge stone 11 and the outer vertical edge stone 17 to obtain a third cement stabilized rubble layer 14, a cement mortar leveling layer 13 and a pavement panel layer 12;
(9) the foundation pit on the outer side of the pavement structure of the sidewalk is backfilled and compacted, the supporting body 18 is embedded in the soil body or the top of the supporting body is exposed, and greening can be performed on the outer side of the pavement structure of the sidewalk.
Claims (8)
1. The utility model provides a bituminous composite road surface structure which characterized by: the pavement structure comprises a main pavement structure and a sidewalk pavement structure;
the main road pavement structure sequentially comprises a road base layer (9), a first cement stabilizing weathered layer (8), a second cement stabilizing crushed stone layer (7), a first cement stabilizing crushed stone layer (6), a permeable layer (5), a glass fiber geogrid layer (4), a coarse-grain asphalt layer (3), a medium-grain asphalt layer (2) and an asphalt mastic crushed stone layer (1) from bottom to top; the pavement structure of the pavement comprises a road base layer (9), a second cement stabilized weathered layer (15), a third cement stabilized gravel layer (14), a cement mortar leveling layer (13) and a pavement panel layer (12) from bottom to top, and further comprises an inner vertical edge stone (11) and an outer vertical edge stone (17);
the inner vertical edge stone (11) is arranged above the outer side edge of the first cement-stabilized gravel layer (6), the outer side edge of the first cement-stabilized gravel layer (6) is in lap joint with the inner side edge of the second cement-stabilized weathered layer (15), and the second cement-stabilized weathered layer (15) is positioned above; the outer edge of the first cement-stabilized gravel layer (6) is located on the outer side of the outer vertical surface of the inner vertical edge stone (11) and has a distance a, the outer edge of the second cement-stabilized gravel layer (7) is located on the outer side of the outer edge of the first cement-stabilized gravel layer (6) and has a distance b, and the outer edge of the first cement-stabilized weathered layer (8) is located on the outer side of the outer edge of the second cement-stabilized gravel layer (7) and has a distance c.
2. The asphalt composite road pavement structure of claim 1, wherein: an inner cement mortar horizontal bottom layer (10) is arranged between the bottom of the inner vertical edge stone (11) and the first cement stable gravel layer (6); the outer side vertical edge stone (17) is positioned above the outer side edge of the second cement stabilization weathered layer (15), the outer side edge of the second cement stabilization weathered layer (15) is positioned on the outer side of the outer vertical surface of the outer side vertical edge stone (17) and has a distance d, and an outer side cement mortar horizontal bottom layer (16) is arranged between the outer side vertical edge stone (17) and the second cement stabilization weathered layer (15).
3. The asphalt composite road pavement structure of claim 2, wherein: a supporting body (18) is arranged on the outer side of the outer side vertical edge stone (17), the bottom edge of the supporting body (18) is flush with the bottom edge of the outer side cement mortar horizontal bottom layer (16), and the top edge is flush with the middle part of the outer side vertical edge stone (17).
4. The asphalt composite road pavement structure of claim 3, wherein: the distances a, b, c and d are equal, and are all more than or equal to 15cm and less than or equal to 25 cm.
5. The asphalt composite road pavement structure of claim 4, wherein: the thickness of the first cement stabilization weathered layer (8) is 20cm, the thickness of the second cement stabilization gravel layer (7) is 18cm, the thickness of the first cement stabilization gravel layer (6) is 18cm, the thickness of the coarse particle asphalt layer (3) is 6cm, the thickness of the medium particle asphalt layer (2) is 5cm, and the thickness of the asphalt mastic gravel layer (1) is 4 cm.
6. The asphalt composite road pavement structure of claim 5, wherein: the thickness of the second cement stabilization weathered layer (15) is 20cm, the thickness of the third cement stabilization gravel layer (14) is 18cm, the thickness of the cement mortar leveling layer (13) is 2cm, and the pavement panel layer (12) is a granite track plate with the thickness of 3 cm.
7. The asphalt composite road pavement structure of claim 6, wherein: the permeable layer (5) is paved by emulsified asphalt with the dosage of 1.2L per square meter.
8. The asphalt composite road pavement structure of claim 7, wherein: the supporting body (18) is made of concrete and is obtained by casting in situ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436566.XU CN212077527U (en) | 2020-03-30 | 2020-03-30 | Asphalt composite road pavement structure |
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| CN202020436566.XU CN212077527U (en) | 2020-03-30 | 2020-03-30 | Asphalt composite road pavement structure |
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| CN212077527U true CN212077527U (en) | 2020-12-04 |
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| CN202020436566.XU Active CN212077527U (en) | 2020-03-30 | 2020-03-30 | Asphalt composite road pavement structure |
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