CN210916843U - Highway road surface structure - Google Patents
Highway road surface structure Download PDFInfo
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- CN210916843U CN210916843U CN201921396576.9U CN201921396576U CN210916843U CN 210916843 U CN210916843 U CN 210916843U CN 201921396576 U CN201921396576 U CN 201921396576U CN 210916843 U CN210916843 U CN 210916843U
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Abstract
The utility model relates to a highway pavement structure, including the roadbed, by supreme graded broken stone layer, the cement stabilized broken stone layer, coarse grain formula asphalt concrete layer and the fine grain formula asphalt concrete layer of having laid in proper order down on the roadbed, be equipped with between coarse grain formula pitch and the cement stabilized broken stone layer and pass through the seal coat. In the utility model, the graded broken stone has good shear strength and higher compression resistance, and can effectively absorb the stress concentration generated by the crack on the top surface of the semi-rigid base layer; the cement stabilized macadam has the advantages of high strength and good stability; the coarse grain asphalt concrete pavement belongs to a flexible structure layer and has good bearing force and force transfer performance; the fine-grain asphalt concrete has higher compactness and good waterproofness and seepage-proofing performance; the graded broken stone, the cement stabilized broken stone, the coarse grain type asphalt concrete and the fine grain type asphalt concrete are matched to act, so that the compression resistance, the cracking resistance and the seepage resistance of the road surface structure are enhanced, and the service life of the road surface structure is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the road engineering technique and specifically relates to a highway pavement structure is related to.
Background
The highway is constructed according to the national technical standard and is approved by the highway administration department, and is connected among cities, villages and industrial and mining bases. With the rapid development of social economy, highway industry, one of infrastructure, is also rapidly developing, and the social requirements for highways with high quality and high pressure resistance are increasingly increased.
The utility model discloses a chinese utility model patent that publication number is CN207031948U discloses an easy highway road surface structure of repairing, including road surface, road bed and lower part buffer layer, the road surface sets up on the road bed, be provided with river sand bed between road bed and the road surface, be provided with the pitch layer between river sand bed and the road surface, the lower part buffer layer sets up in the top on pitch layer, and the lower part buffer layer passes through the protection network and sets up the below on road surface.
The highway pavement structure in the technical scheme is convenient for repairing the damage of the pavement and can effectively reduce the generation of cracks. However, in the pavement structure in the technical scheme, the river sand layer with poor strength is arranged between the roadbed and the pavement, so that the compression resistance of the pavement structure is weakened, and the service life of the pavement structure is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a highway road surface structure, this road surface structure have good compressive property, have prolonged road surface structure's life.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a highway pavement structure, includes the roadbed, by supreme graded broken stone layer, the stable broken stone layer of cement, coarse grain formula asphalt concrete layer and the fine grain formula asphalt concrete layer of having laid in proper order down on the roadbed, be equipped with between coarse grain formula pitch and the stable broken stone layer of cement and pass through the seal coat.
By adopting the technical scheme, the graded broken stone has good shear strength and higher compression resistance, and is laid between the road bed and the cement-stabilized broken stone layer, so that stress concentration generated by cracks on the top surface of the cement-stabilized broken stone layer can be effectively absorbed and weakened, and the bearing capacity of the road surface structure is greatly improved; the cement stabilized macadam has the advantages of high strength, good stability and strong dry shrinkage resistance, and is laid on the graded macadam, so that the pavement structure has good compressive strength; the coarse grain asphalt concrete pavement belongs to a flexible structure layer, has good bearing force and force transfer performance, is laid on the cement stabilized macadam, enables the stress of the pavement structure to be uniformly dispersed, and is not easy to generate the phenomena of temperature shrinkage and drying shrinkage cracking; the fine grain type asphalt concrete has higher compactness and is paved on coarse grain type asphalt concrete, so that the highway structure has good waterproofness and seepage-proofing performance; the graded broken stone, the cement stabilized broken stone, the coarse grain type asphalt concrete and the fine grain type asphalt concrete are matched to act, so that the compression resistance, the cracking resistance and the seepage resistance of the road surface structure are enhanced, and the service life of the road surface structure is prolonged.
The utility model discloses further set up to: a plurality of arc-shaped plates are jointly arranged in the graded gravel layer and the cement stabilized gravel layer, and the distance between every two adjacent arc-shaped plates is equal.
Through adopting above-mentioned technical scheme, set up the arc jointly in graded gravel layer and cement stabilized macadam layer, when the vehicle was gone on the road surface, the arc upper surface received decurrent pressure, and the arc can disperse the pressure that receives and have the trend of stretching to both sides to this compressive capacity who strengthens road surface structure.
The utility model discloses further set up to: the road bed upper surface is equipped with the steel sheet, set up a plurality of and arc one-to-one and grafting complex slot on the steel sheet.
Through adopting above-mentioned technical scheme, set up the steel sheet at road bed upper surface, the cooperation is pegged graft with the slot to the arc is installed to this staff of being convenient for, has reduced the construction degree of difficulty of building the road surface structure, has accelerated the construction process.
The utility model discloses further set up to: the surface of one side, close to the steel plate, of the arc-shaped plate is welded with a reinforcing plate with a wavy cross section, and the length direction of the reinforcing plate is consistent with that of the arc-shaped plate.
Through adopting above-mentioned technical scheme, when the arc upper surface atress, the arc can disperse the power that receives and stretch to both sides, and at this moment, the reinforcing plate receives the tensile force that comes from the arc, and the reinforcing plate is the wave, has good structural strength, has produced the hindrance to the trend that the arc was stretched to both sides to this compressive property who has strengthened the arc, thereby makes road surface structure's compressive property obtain the reinforcing.
The utility model discloses further set up to: a buffer rubber strip is arranged between the adjacent arc plates; the lateral walls of the two sides of the buffer rubber strip are arc-shaped and are respectively abutted to the two adjacent arc-shaped plates.
Through adopting above-mentioned technical scheme, when the arc upper surface atress, the arc can disperse the power that receives and stretch to both sides, and the cushion rubber strip that sets up between two adjacent arcs has played good cushioning effect, has avoided two arcs to produce rigid contact to the degree of both mutual wearing and tearing has been reduced.
The utility model discloses further set up to: the cross sections of the slot and the part of the arc-shaped plate in inserting fit with the slot are both trapezoidal.
Through adopting above-mentioned technical scheme, slot and arc are trapezoidal with slot grafting complex part for need not careful butt joint when the arc inserts the slot, the arc slides with the slot and can realize pegging graft, thereby the installation of the arc of being convenient for.
The utility model discloses further set up to: and a frosted layer is arranged on the inner surface of the slot.
Through adopting above-mentioned technical scheme, the frosting has increased the coefficient of friction of slot for be connected more firmly between arc and the slot, reduced the not hard up possibility of arc and slot connection department appearance, thereby prolonged road surface structure's life.
The utility model discloses further set up to: and a bonding layer formed by quick-cracking emulsified asphalt is arranged between the coarse-grain type asphalt concrete layer and the fine-grain type asphalt concrete layer.
Through adopting above-mentioned technical scheme, the type emulsified asphalt that splits soon has good adhesive strength and shear strength, sets up between coarse grain formula asphalt concrete layer and fine grain formula asphalt concrete layer for coarse grain formula asphalt concrete layer and fine grain formula asphalt concrete layer's connection is more firm.
To sum up, the utility model discloses a beneficial technological effect does:
1. in the scheme, the graded broken stone has good shear strength and higher compression resistance, and is paved between the road bed and the cement-stabilized broken stone layer, so that stress concentration generated by cracks on the top surface of the cement-stabilized broken stone layer can be effectively absorbed and weakened, and the bearing capacity of the road surface structure is greatly improved; the cement stabilized macadam has the advantages of high strength, good stability and strong dry shrinkage resistance, and is laid on the graded macadam, so that the pavement structure has good compressive strength; the coarse grain asphalt concrete pavement belongs to a flexible structure layer, has good bearing force and force transfer performance, is laid on the cement stabilized macadam, enables the stress of the pavement structure to be uniformly dispersed, and is not easy to generate the phenomena of temperature shrinkage and drying shrinkage cracking; the fine grain type asphalt concrete has higher compactness and is paved on coarse grain type asphalt concrete, so that the highway structure has good waterproofness and seepage-proofing performance; the graded broken stone, the cement stabilized broken stone, the coarse grain type asphalt concrete and the fine grain type asphalt concrete are matched to act, so that the compression resistance, the cracking resistance and the seepage resistance of the road surface structure are enhanced, and the service life of the road surface structure is prolonged;
2. in the scheme, when the upper surface of the arc-shaped plate is stressed, the arc-shaped plate can disperse the stressed force and stretch towards two sides, at the moment, the reinforcing plate is stressed by the stretching force from the arc-shaped plate, the reinforcing plate is wavy and has good structural strength, and the tendency that the arc-shaped plate stretches towards two sides is hindered, so that the compression resistance of the arc-shaped plate is enhanced, and the compression resistance of a pavement structure is enhanced;
3. in this scheme, slot and arc are trapezoidal with slot grafting complex part for need not accurate butt joint when the arc inserts the slot, the arc slides with the slot and can realize pegging graft, thereby the installation of the arc of being convenient for.
Drawings
Fig. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic view illustrating a connection structure of the steel plate and the arc plate of FIG. 1;
fig. 3 is a schematic view of the partially exploded structure of fig. 2.
Reference numerals: 1. a road bed; 2. grading a crushed stone layer; 3. a cement stabilized rubble layer; 4. a sealing layer; 5. a coarse-grained asphalt concrete layer; 6. a fine particle type asphalt concrete layer; 7. sticking a layer; 8. a steel plate; 81. a slot; 811. sanding layer; 9. an arc-shaped plate; 91. a reinforcing plate; 10. and a rubber strip is buffered.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a road pavement structure, which comprises a road bed 1. The road bed 1 is formed by compacting sand gravel, and in order to ensure the structural strength of the pavement, the heavy-duty compactness of the road bed 1 is more than or equal to 0.95. The road bed 1 is sequentially paved with a graded gravel layer 2, a cement stabilizing gravel layer 3, a permeable sealing layer 4, a coarse-grained asphalt concrete layer 5 and a fine-grained asphalt concrete layer 6 from bottom to top.
As shown in fig. 1, the graded crushed stone layer 2 is formed by paving graded crushed stones, the heavy-duty compactness is more than or equal to 0.95, and the aggregate crushing value of the graded crushed stone layer 2 is less than or equal to 0.4, so that the structural strength of the pavement is enhanced. The graded broken stone has good shear strength and higher compression resistance, is laid between the road bed 1 and the cement stabilized gravel layer 3, and can effectively absorb and weaken the stress generated by the top surface crack of the cement stabilized gravel layer 3, so that the bearing capacity of the road surface structure is greatly improved.
As shown in fig. 1, the cement stabilized macadam layer 3 is formed by paving cement stabilized macadams, the degree of heavy weight compaction of the cement stabilized macadam layer is greater than or equal to 0.98, and the seven-day water immersion strength of the cement stabilized macadam layer 3 is 3.5-4.5MPa, so that the structural strength of the pavement is enhanced. The cement stabilized macadam has the advantages of high strength, good stability and strong dry shrinkage resistance, and is applied to a pavement structure, so that the pavement structure has good compressive strength. The cement paste is sprayed between the cement stabilization gravel layer 3 and the grading gravel layer 2, and the mass ratio of cement to water of the cement paste is 1: 0.5, thereby improving the bonding force between the cement stabilized gravel layer 3 and the graded gravel layer 2.
As shown in fig. 1, the seal-through layer 4 is formed by solidifying a seal-through oil, and in this embodiment, emulsified asphalt is selected as the seal-through oil. The emulsified asphalt has the effects of environmental protection, strong impermeability, strong consolidation property, stability, water resistance and the like, and is applied to a pavement structure to enhance the impermeability and the stability of the pavement structure.
As shown in fig. 1, the coarse-grained asphalt concrete layer 5 is formed by paving coarse-grained asphalt concrete, the coarse-grained asphalt concrete has good bearing pressure and force transfer performance, and is paved on cement stabilized macadam, so that the stress of the pavement structure is uniformly dispersed, and the phenomena of temperature shrinkage and drying shrinkage cracking are not easy to generate, thereby enhancing the crack resistance of the pavement structure.
As shown in fig. 1, the fine-grained asphalt concrete layer 6 is formed by paving fine-grained asphalt concrete, has high compactness, and is applied to a pavement structure, so that the pavement structure has good waterproof and anti-seepage performance. An adhesive layer 7 is arranged between the coarse-grained asphalt concrete layer 5 and the fine-grained asphalt concrete layer 6, and the adhesive layer 7 is formed by curing quick-cracking emulsified asphalt, so that the bonding strength between the coarse-grained asphalt concrete layer 5 and the fine-grained asphalt concrete layer 6 is enhanced.
As shown in fig. 1, a steel plate 8 is fixed to the upper surface of the roadbed 1. Referring to fig. 2, the steel plate 8 is a rectangular plate, the length direction of which is the same as the extending direction of the road surface, and a plurality of arc-shaped plates 9 are uniformly installed on the steel plate 8. The arc-shaped plate 9 is made of stainless steel materials, the length direction of the arc-shaped plate is consistent with that of the steel plate 8, and the length of the arc-shaped plate 9 is equal to that of the steel plate 8.
As shown in fig. 3, the upper surface of the steel plate 8 is provided with a slot 81 that can be inserted into the arc plate 9. The cross-section of 9 main parts of arc is the arc, and the cross-section of 9 both sides of arc and the cross-section of slot 81 are trapezoidal to this need not accurate butt joint when making arc 9 insert slot 81, and arc 9 slides with slot 81 and can realize pegging graft, thereby the installation of the arc 9 of being convenient for. The inner surface of the slot 81 is provided with a frosting layer 811, and the frosting layer 811 is polished by the inner surface of the slot 81, so that the friction coefficient of the inner surface of the slot 81 is enhanced, and the connection between the arc-shaped plate 9 and the steel plate 8 is more stable.
As shown in fig. 2 and 3, a reinforcing plate 91 is welded and fixed to the lower surface of the arc plate 9. The cross-section of the reinforcement plate 91 is wave-shaped, and the extension direction of the wave-shaped cross-section is consistent with the extension direction of the cross-section of the arc-shaped plate 9. When the vehicle goes on the road surface, the downward pressure of arc 9 upper surface, arc 9 can disperse the power that receives and stretch to both sides, and at this moment, reinforcing plate 91 receives the tensile force that comes from arc 9, and reinforcing plate 91 is the wave, has good structural strength, has produced the hindrance to the trend that arc 9 stretches to both sides to this compressive property who has strengthened arc 9, thereby makes the compressive property of road surface structure obtain the reinforcing.
As shown in fig. 2 and 3, a cushion rubber strip 10 is provided between two adjacent arc plates 9. The cushion rubber strip 10 is made of rubber, and the side walls of the two sides of the cushion rubber strip 10 are arc-shaped and are respectively abutted to the upper surfaces of the two adjacent arc-shaped plates 9. The cushion rubber strip 10 has good elastic performance, so that a good buffering effect is achieved, the two arc-shaped plates 9 are prevented from being in rigid contact, and the degree of mutual abrasion of the two arc-shaped plates is reduced.
In the construction process of the embodiment, firstly, a worker needs to lay a road bed 1 on a roadbed, install a steel plate 8 on the road bed 1, insert an arc-shaped plate 9 with a reinforcing plate 91 into an insertion slot 81 of the steel plate 8, then lay a graded gravel layer 2 on the surface of the steel plate 8 and spray cement paste on the surface of the graded gravel layer 2; and after the cement paste is sprayed, immediately paving a cement stable gravel layer 3, then spraying the permeable sealing oil, paving a coarse-grained asphalt concrete layer 5 on the surface of the permeable sealing oil, and finally coating the surface of the coarse-grained asphalt concrete layer 5 with quick-cracking emulsified asphalt and paving a fine-grained asphalt concrete layer 6.
In this scheme, the graded rubble has good shear strength and higher compressive property, lays between roadbed 1 and cement stabilized rubble layer 3, can effective absorption and weaken the stress concentration that the crack produced on the 3 top surfaces of cement stabilized rubble layer. The cement stabilized macadam has the advantages of high strength, good stability and strong dry shrinkage resistance. The coarse grain asphalt concrete road surface belongs to a flexible structure layer and has good bearing force and force transfer performance. The fine-grain asphalt concrete has higher compactness, so that the highway structure has good waterproofness and seepage-proofing performance. The graded broken stone, the cement stabilized broken stone, the coarse grain type asphalt concrete and the fine grain type asphalt concrete are matched to act, so that the compression resistance, the cracking resistance and the seepage resistance of the road surface structure are enhanced, and the service life of the road surface structure is prolonged. In addition, the arc 9 can disperse the power of receiving and stretch to both sides, and at this moment, reinforcing plate 91 receives the tensile force that comes from arc 9, and reinforcing plate 91 is the wave, has good structural strength, has produced the hindrance to the trend that arc 9 stretches to both sides to this compressive property that has strengthened arc 9, thereby makes the compressive property of road surface structure obtain the reinforcing.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a highway road surface structure, includes road bed (1), its characterized in that: the road bed is equipped with graded rubble layer (2), cement stabilization rubble layer (3), coarse grain formula asphalt concrete layer (5) and fine grain formula asphalt concrete layer (6) by supreme down having laid in proper order on (1), be equipped with between coarse grain formula pitch and the cement stabilization rubble layer (3) and pass through seal coat (4).
2. A road surface structure according to claim 1, characterized in that: a plurality of arc plates (9) are arranged in the graded gravel layer (2) and the cement stabilized gravel layer (3) together, and the distance between every two adjacent arc plates (9) is equal.
3. A road surface structure according to claim 2, characterized in that: road bed (1) upper surface is equipped with steel sheet (8), set up a plurality of and arc (9) one-to-one and grafting complex slot (81) on steel sheet (8).
4. A road surface structure according to claim 3, characterized in that: the surface of one side, close to the steel plate (8), of the arc-shaped plate (9) is welded with a reinforcing plate (91) with a wavy cross section, and the length direction of the reinforcing plate (91) is consistent with that of the arc-shaped plate (9).
5. A road surface structure according to claim 3, characterized in that: a buffer rubber strip (10) is arranged between the adjacent arc plates (9); the side walls of the two sides of the buffer rubber strip (10) are arc-shaped and are respectively abutted against the two adjacent arc-shaped plates (9).
6. A road surface structure according to claim 3, characterized in that: the cross sections of the slot (81) and the part of the arc-shaped plate (9) which is in splicing fit with the slot (81) are both trapezoidal.
7. A road surface structure according to claim 6, characterised in that: the inner surface of the slot (81) is provided with a frosting layer (811).
8. A road surface structure according to claim 1, characterized in that: and a bonding layer (7) formed by quick-crack emulsified asphalt is arranged between the coarse-grain asphalt concrete layer (5) and the fine-grain asphalt concrete layer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921396576.9U CN210916843U (en) | 2019-08-27 | 2019-08-27 | Highway road surface structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921396576.9U CN210916843U (en) | 2019-08-27 | 2019-08-27 | Highway road surface structure |
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| CN210916843U true CN210916843U (en) | 2020-07-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962453A (en) * | 2021-02-03 | 2021-06-15 | 江西龙正科技发展有限公司 | Novel ultra-high strength concrete UHPC light combined bridge deck |
| CN113463462A (en) * | 2021-07-22 | 2021-10-01 | 重庆海聚道路材料有限公司 | Antiskid noise-reduction road surface containing Novachip ultrathin wearing layer |
-
2019
- 2019-08-27 CN CN201921396576.9U patent/CN210916843U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962453A (en) * | 2021-02-03 | 2021-06-15 | 江西龙正科技发展有限公司 | Novel ultra-high strength concrete UHPC light combined bridge deck |
| CN113463462A (en) * | 2021-07-22 | 2021-10-01 | 重庆海聚道路材料有限公司 | Antiskid noise-reduction road surface containing Novachip ultrathin wearing layer |
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