CN212103532U - Continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction - Google Patents
Continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction Download PDFInfo
- Publication number
- CN212103532U CN212103532U CN202020412188.1U CN202020412188U CN212103532U CN 212103532 U CN212103532 U CN 212103532U CN 202020412188 U CN202020412188 U CN 202020412188U CN 212103532 U CN212103532 U CN 212103532U
- Authority
- CN
- China
- Prior art keywords
- layer
- reinforced concrete
- asphalt
- continuous reinforced
- steel bars
- 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.)
- Active
Links
Images
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction, which comprises an old pavement, a continuous reinforced concrete layer, a shear-resistant and crack-resistant layer and an asphalt concrete layer which are laid in sequence from bottom to top, wherein the shear-resistant and crack-resistant layer bonds the continuous reinforced concrete layer and the asphalt concrete layer into a whole; the continuous reinforced concrete layer is internally provided with erection steel bars, transverse steel bars and longitudinal continuous steel bars, and the erection steel bars, the transverse steel bars and the longitudinal continuous steel bars are connected to form an integral continuous steel bar mesh. The utility model has the advantages that: the composite pavement fully exerts the advantages of different pavement materials and is rigid and flexible.
Description
Technical Field
The utility model relates to a highway, urban road pavement design and construction field, concretely relates to join in marriage reinforced concrete combined type road surface structure in succession suitable for old road surface transformation.
Background
The domestic high-grade pavement structure forms comprise a cement pavement and an asphalt pavement, wherein the cement pavement has the advantages of high bearing capacity, long service life, relatively low manufacturing cost and the like, and the asphalt pavement has the advantages of good flatness, driving comfort and the like. In recent years, with the increasing of the quantity of motor vehicles and the vigorous development of transportation industry, heavy traffic has become an important reason that a part of cement pavements or asphalt pavements are difficult to reach the design service life and early diseases are continuous. Aiming at the cement road surface which has more diseases and is badly evaluated in the technical condition of the road surface and needs to be repaired and reconstructed urgently, in order to ensure the design service life of the road and avoid the unfavorable condition of repeated repair and reconstruction, the development of a road surface structure suitable for additionally paving and reconstructing the old road surface is very necessary.
Disclosure of Invention
An object of the utility model is to prior art not enough, provide a continuous reinforced concrete combined type road surface structure suitable for old road surface is reformed transform, improve the bulk strength of road surface structure.
The utility model adopts the technical proposal that: a continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction is characterized by comprising an old pavement, a continuous reinforced concrete layer, a shear-resistant and crack-resistant layer and an asphalt concrete layer which are laid in sequence from bottom to top, wherein the shear-resistant and crack-resistant layer bonds the continuous reinforced concrete layer and the asphalt concrete layer into a whole; the continuous reinforced concrete layer is internally provided with erection steel bars, transverse steel bars and longitudinal continuous steel bars, and the erection steel bars, the transverse steel bars and the longitudinal continuous steel bars are connected to form an integral continuous steel bar mesh.
According to the scheme, the thickness of the continuous reinforced concrete layer is 22-30 cm.
According to the scheme, the transverse steel bars are arranged at intervals along the length direction of the continuous reinforced concrete layer, and the distance is 30-80 cm; the longitudinal continuous steel bars are arranged at intervals along the width direction of the continuous reinforced concrete layer, and the distance is 10-25 cm.
According to the scheme, the asphalt concrete layer comprises an asphalt concrete lower surface layer, an asphalt concrete upper surface layer and emulsified asphalt viscous layer oil which is arranged between the asphalt concrete lower surface layer and the asphalt concrete upper surface layer and used for reinforcing interlayer combination of the asphalt concrete lower surface layer and the asphalt concrete upper surface layer.
According to the scheme, the lower asphalt concrete surface layer is paved by medium-grain asphalt concrete with the thickness of 5-6 cm or coarse-grain asphalt concrete with the thickness of 8-12 cm; the upper layer of the asphalt concrete is paved by adopting asphalt concrete with the thickness of 4-6 cm or asphalt mastic broken stone with the thickness of 4-6 cm.
According to the scheme, the anti-shearing and anti-cracking layer comprises an asphalt film and single-particle-size broken stones, wherein the asphalt film is laid on the surface of the continuous reinforced concrete layer, and the single-particle-size broken stones are laid on the asphalt film and rolled by a rubber-tyred roller.
According to the scheme, a leveling isolation layer is additionally arranged between the old pavement layer and the continuous reinforced concrete layer, and the thickness of the leveling isolation layer is 2.5-4 cm.
According to the scheme, the old pavement can be a cement pavement or an asphalt pavement.
The utility model has the advantages that:
1. the utility model discloses add on the basis of old road surface and adopt the road surface structure that is formed by the structural layer complex of two kinds of different material types and mechanical properties of continuous reinforced concrete and asphalt concrete, continuous reinforced concrete slab has improved bituminous paving's bearing capacity as the rigid foundation, satisfies the requirement of traffic load conditions such as heavy load, overload; the asphalt concrete surface layer improves and enhances the use quality of the surface of the continuous reinforced concrete pavement, meets the performance requirement of high-speed driving of automobiles, and the composite pavement fully exerts the respective advantages of different pavement materials and is rigid and flexible;
2. longitudinal continuous reinforcing steel bars and transverse reinforcing steel bars are arranged in the continuous reinforced concrete, no contraction joints are transversely arranged, and the composite pavement has strong structural integrity and strong adaptability to basic diseases due to the reinforcing effect of the reinforcing steel bars;
3. when the continuous reinforced concrete composite pavement is used for additionally paving and transforming a cement pavement or an asphalt pavement, the structural strength of the old pavement can be utilized to the maximum extent, the safety of the pavement structure is ensured, and the service life of the pavement is prolonged; meanwhile, the damage of the old pavement disease part is reduced, the generation of excessive construction waste is avoided, and the social and economic benefits are remarkable;
4. the shear-resistant and crack-resistant layer is designed to serve as a transition functional layer to bond the concrete layer and the asphalt layer into a whole, so that the two material layers are continuous, the stress condition between the two material layers is improved, the shear-resistant capacity between the two material layers is improved, the shear-pushing deformation of the asphalt surface layer is effectively prevented, and the upward reflection of microcracks on the surface of continuous reinforced concrete can be prevented.
Drawings
Fig. 1 is a schematic view of a continuous reinforced concrete composite pavement structure suitable for cement pavement reconstruction according to an embodiment.
Fig. 2 is a schematic view of a continuous reinforced concrete composite pavement structure suitable for asphalt pavement reconstruction in the second embodiment.
Wherein: 1. cement road surface; 2. leveling the isolation layer; 3. continuously reinforcing a concrete layer; 4. a shear and crack resistant layer; 5. an asphalt concrete lower surface layer; 6. an upper asphalt concrete layer; 7. erecting steel bars; 8. transverse reinforcing steel bars; 9. longitudinally continuous reinforcing steel bars; 10. an asphalt pavement.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
A continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction comprises an old pavement, a continuous reinforced concrete layer 3, a shear-resistant crack-resistant layer 4 and an asphalt concrete layer which are laid in sequence from bottom to top, wherein the shear-resistant crack-resistant layer 4 bonds the continuous reinforced concrete layer 3 and the asphalt concrete layer into a whole; and the erection steel bars 7, the transverse steel bars 8 and the longitudinal continuous steel bars 9 are distributed in the continuous reinforced concrete layer 3, and the erection steel bars 7, the transverse steel bars 8 and the longitudinal continuous steel bars 9 are welded or bound by iron wires to form an integral continuous steel bar mesh.
Preferably, the old pavement may be a cement pavement 1 or an asphalt pavement 10, as shown in the first embodiment in fig. 1 and the second embodiment in fig. 2.
Preferably, the thickness of the continuous reinforced concrete layer 3 is 22-30 cm.
In the utility model, the erection steel bars 7 are made of HPB300 smooth steel bars with the diameter of 12mm, and 6 erection steel bars 7 are vertically erected in every square meter; the transverse steel bars 8 are made of HRB400 threaded steel bars with the diameter of 14mm, the transverse steel bars 8 are arranged at intervals along the length direction of the continuous reinforced concrete layer 3, and the distance is 30-80 cm (when the diameter of the transverse steel bars 8 is larger, the distance can be correspondingly increased); the longitudinal continuous steel bars 9 are made of HRB400 threaded steel bars with the diameter of 18mm, the longitudinal continuous steel bars 9 are arranged at intervals along the width direction of the continuous reinforced concrete layer 3, and the distance between the longitudinal continuous steel bars 9 and the continuous reinforced concrete layer is 10-25 cm.
Preferably, the asphalt concrete layer comprises an asphalt concrete lower surface layer 5 and an asphalt concrete upper surface layer 6, emulsified asphalt viscous layer oil is arranged between the asphalt concrete lower surface layer 5 and the asphalt concrete upper surface layer 6, and interlayer combination between the asphalt concrete lower surface layer 5 and the asphalt concrete upper surface layer 6 is enhanced.
The utility model discloses in, asphalt concrete lower surface 5 adopts 5~6cm thick medium grain formula asphalt concrete to lay or 8~12cm thick coarse grain formula asphalt concrete lays, and asphalt concrete upper surface 6 adopts 4~6cm thick asphalt concrete or 4~6cm thick asphalt mastic rubble to lay, sets up emulsified asphalt between asphalt concrete lower surface 5 and the asphalt concrete upper surface 6 and glues the layer oil.
Preferably, the shear-resistant and crack-resistant layer 4 comprises an asphalt film arranged on the surface of the continuous reinforced concrete layer 3, and single-particle-size crushed stones laid on the asphalt film. The specific construction of the shear-resistant anti-cracking layer 4 is as follows: milling and milling the surface of the continuous reinforced concrete to be naked, spraying hot asphalt after exposing the bone to form an asphalt film with a certain thickness, then spreading crushed stone with single grain diameter, and forming the anti-shearing and anti-cracking layer 4 after rolling and forming by a rubber-wheel road roller.
Preferably, a leveling isolation layer 2 is additionally arranged between the old pavement layer and the continuous reinforced concrete layer 3, and the erection steel bars 7 are arranged on the leveling isolation layer 2. The leveling isolation layer 2 is paved by sand type asphalt concrete or fine grain type asphalt concrete, and the thickness is 2.5-4 cm.
The utility model discloses a concrete work progress does:
firstly, detecting an old road surface, evaluating the damage condition of the old road surface, and carrying out targeted treatment.
1. And when the old pavement is the cement pavement 1, evaluating the damage condition through the plate breakage rate and the average slab staggering amount after detection, and performing targeted treatment on the local disease sections with the plate breakage rate of more than 20% and the slab staggering amount of more than 15 mm.
2. And when the old pavement is the asphalt pavement 10, evaluating the structural strength through the road surface rebound deflection value after detection, and performing targeted treatment on severe diseases such as cracks, subsidence, pits and the like with the road surface rebound deflection value of more than 0.46 mm.
Secondly, a leveling isolation layer 2 is arranged on the surface of the road surface. In fig. 1 and 2, the leveling and isolating layer 2 is laid by sand type asphalt concrete or fine grain type asphalt concrete, and the thickness is 3.5 cm.
Thirdly, arranging erection steel bars 7, transverse steel bars 8 and longitudinal continuous steel bars 9 on the leveling isolation layer 2 to form a continuous steel bar mesh, and then pouring concrete to form a continuous reinforced concrete layer 3. As shown in fig. 1 and 2, the erection steel bars 7 are made of HPB300 plain steel bars with the diameter of 12mm, and 6 erection steel bars are erected per square meter; the transverse steel bars 8 are made of HRB400 threaded steel bars with the diameter of 14mm, and the distance between every two adjacent transverse steel bars 8 is 50 cm; the longitudinal continuous steel bars 9 are made of HRB400 threaded steel bars with the diameter of 18mm, and the distance between every two adjacent longitudinal continuous steel bars 9 is 15 cm; c45 concrete is poured, and the pouring thickness is 24 cm.
Fourthly, after the continuous reinforced concrete layer 3 is cured, arranging a shear-resistant anti-cracking layer 4: milling and naked on the surface of the continuous reinforced concrete layer 3, wherein the milling and milling depth is controlled to be 2-4 mm; spraying hot 1.6-2.0 kg/m2 rubber asphalt after milling and sweeping to form an asphalt film with a certain thickness, spreading single-particle-size crushed stone with the particle size of 9.5-13.2 mm on the asphalt film, and rolling for 1-2 times by a 9-16-ton rubber wheel road press to form the shear-resistant and crack-resistant layer 44.
And fifthly, paving an asphalt concrete lower layer 5 and an asphalt concrete upper layer 6 on the anti-shearing and anti-cracking layer 4, wherein in the first embodiment and the second embodiment shown in the figures 1 and 2, the asphalt concrete lower layer 5 is paved by medium-grained asphalt concrete AC-20C with the thickness of 6cm, the asphalt concrete upper layer 6 is paved by asphalt mastic macadam SMA-13 with the thickness of 4cm, and PC-3 emulsified asphalt viscose layer oil is sprayed between the asphalt concrete lower layer 5 and the asphalt concrete upper layer 6.
Accomplished through above step the utility model is suitable for a continuous reinforced concrete combined type road surface structure that cement road surface 1 was reformed transform.
In the construction process of the utility model, only the serious diseases of the old pavement are treated in a targeted way, the slight diseases of cracks can not be treated, the structural strength of the old pavement is utilized to the maximum extent, the damage of the parts of the old pavement is reduced, and the generation of excessive construction waste is avoided; the surface of the old pavement is integrally leveled, so that the problem that the thickness of a concrete layer paved is uneven due to insufficient base flatness is avoided, cracks are generated at the thickness change position of the concrete layer due to the fact that the expansion and contraction are blocked, the strength of the concrete layer is guaranteed, and meanwhile, diseases of the cement pavement 1 can be isolated from upward reflection to a certain extent; the continuous reinforced concrete layer 3 has strong structural integrity and strong adaptability to basic diseases due to the reinforcing action of the longitudinal and transverse steel bars 8, and can effectively isolate the diseases of the old pavement from being reflected upwards; the shear-resistant and crack-resistant layer 4 is used as a transition functional layer to bond the concrete layer and the asphalt layer into a whole, so that the two materials are continuous between layers, the stress condition between the layers is improved, the shear-resistant capability between the layers is improved, the shear-push deformation of the asphalt surface layer is effectively prevented, and the upward reflection of microcracks on the surface of continuous reinforced concrete can be prevented; the asphalt concrete surface layer can further improve the flatness of the continuous reinforced concrete surface and improve the driving comfort.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalents of the disclosed embodiments may be made by those skilled in the art within the spirit and scope of the present disclosure, and such modifications and equivalents should also be considered as falling within the scope of the present disclosure.
Claims (8)
1. A continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction is characterized by comprising an old pavement, a continuous reinforced concrete layer, a shear-resistant and crack-resistant layer and an asphalt concrete layer which are laid in sequence from bottom to top, wherein the shear-resistant and crack-resistant layer bonds the continuous reinforced concrete layer and the asphalt concrete layer into a whole; the continuous reinforced concrete layer is internally provided with erection steel bars, transverse steel bars and longitudinal continuous steel bars, and the erection steel bars, the transverse steel bars and the longitudinal continuous steel bars are connected to form an integral continuous steel bar mesh.
2. A continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction as recited in claim 1, wherein the thickness of the continuous reinforced concrete layer is 22-30 cm.
3. The continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction as recited in claim 1, wherein the transverse steel bars are arranged at intervals along the length direction of the continuous reinforced concrete layer, and the distance is 30-80 cm; the longitudinal continuous steel bars are arranged at intervals along the width direction of the continuous reinforced concrete layer, and the distance is 10-25 cm.
4. A continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction as claimed in claim 1 or 2, wherein the asphalt concrete layer comprises an asphalt concrete lower surface layer and an asphalt concrete upper surface layer, and an emulsified asphalt cement layer oil arranged between the two for reinforcing the interlayer combination of the two.
5. A continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction as recited in claim 4, wherein the asphalt concrete lower surface layer is laid by medium particle asphalt concrete with a thickness of 5-6 cm or coarse particle asphalt concrete with a thickness of 8-12 cm; the upper layer of the asphalt concrete is paved by adopting asphalt concrete with the thickness of 4-6 cm or asphalt mastic broken stone with the thickness of 4-6 cm.
6. The continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction as recited in claim 1, wherein the anti-shear and anti-cracking layer comprises an asphalt film laid on the surface of the continuous reinforced concrete layer, and single-particle-size crushed stone rolled by a rubber-tyred roller laid on the asphalt film.
7. The continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction as recited in claim 1, wherein a leveling isolation layer is additionally arranged between the old pavement layer and the continuous reinforced concrete layer, and the thickness is 2.5-4 cm.
8. A continuous reinforced concrete composite pavement structure suitable for the reconstruction of old pavements as claimed in claim 1, wherein the old pavements may be cement pavements or asphalt pavements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020412188.1U CN212103532U (en) | 2020-03-27 | 2020-03-27 | Continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020412188.1U CN212103532U (en) | 2020-03-27 | 2020-03-27 | Continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212103532U true CN212103532U (en) | 2020-12-08 |
Family
ID=73638419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020412188.1U Active CN212103532U (en) | 2020-03-27 | 2020-03-27 | Continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212103532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763689A (en) * | 2021-01-11 | 2022-07-19 | 新疆北新路桥集团股份有限公司 | Rapid treatment method for highway diseases |
-
2020
- 2020-03-27 CN CN202020412188.1U patent/CN212103532U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763689A (en) * | 2021-01-11 | 2022-07-19 | 新疆北新路桥集团股份有限公司 | Rapid treatment method for highway diseases |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202787067U (en) | Bridge seamless type expansion joint structure | |
| CN101591882B (en) | Stress absorption band construction method | |
| CN201296895Y (en) | Vertical cracking pavement repair structure | |
| CN111074715A (en) | Anti-crack roadbed and pavement structure and construction method thereof | |
| CN212103532U (en) | Continuous reinforced concrete composite pavement structure suitable for old pavement reconstruction | |
| CN111648192A (en) | Impact-resistant wear-resistant environment-friendly pavement and construction method | |
| CN102505641A (en) | Repair reinforcing structure of steel bridge deck and repair reinforcing method of repair reinforcing structure | |
| CN113152196A (en) | Reflection crack resistant pavement structure of ultrathin asphalt bonding layer of municipal road and construction method of reflection crack resistant pavement structure | |
| CN108360327A (en) | A kind of permanent seal cooling advanced composite material (ACM) road structure and construction method | |
| CN115450086B (en) | Old cement concrete pavement reconstruction structure suitable for non-extra-heavy traffic grade and design method | |
| CN101244901B (en) | Bituminous sand and water-proof leveling coupling layer containing the bituminous sand | |
| CN116043632A (en) | Functional layer used between semi-rigid base layer and asphalt pavement | |
| CN114855607B (en) | Cement concrete bridge deck asphalt pavement structure and pavement construction method | |
| CN113250010B (en) | Large-particle-size asphalt macadam flexible ballast bed and construction method thereof | |
| CN213772781U (en) | Crack control pitch road structure | |
| CN210085968U (en) | Anti-shearing and anti-cracking structure between composite pavement layers | |
| CN114892465A (en) | Asphalt surface course with convertible functions, pavement structure and construction method | |
| CN201236314Y (en) | Water discharge protective bridge deck paving structure | |
| CN113774749A (en) | Pavement structure construction method of dynamic square of automobile test field | |
| CN110846970A (en) | Roller compacted concrete and turn-around road structure prepared from same | |
| CN112095394A (en) | Composite pavement with excellent drainage function and construction method thereof | |
| CN217438600U (en) | Anti-reflection crack modified asphalt pavement structure | |
| CN219621517U (en) | Cement concrete pavement structure | |
| CN210085967U (en) | Composite road surface structure for water resistance and crack resistance | |
| CN219930608U (en) | Old cement pavement repair structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |