CN215289546U - Ground structure of heavy load road - Google Patents
Ground structure of heavy load road Download PDFInfo
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- CN215289546U CN215289546U CN202120942959.2U CN202120942959U CN215289546U CN 215289546 U CN215289546 U CN 215289546U CN 202120942959 U CN202120942959 U CN 202120942959U CN 215289546 U CN215289546 U CN 215289546U
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Abstract
The utility model discloses a ground structure of heavy haul road, which comprises a basic layer structure, an enhancement layer structure and a surface layer structure which are sequentially laid from bottom to top, wherein the basic layer structure, the enhancement layer structure and the surface layer structure are sequentially laid from bottom to top, the pavement structure fully exerts the excellent physical and mechanical properties of tensile strength and compressive strength of reinforcing steel bars and concrete materials, and has strong adaptability to karst areas; the anti-fatigue capability of the steel bar as the tension member is far better than that of a concrete material, the double-layer reinforced concrete pavement structure has strong adaptability to the development and change of long-term traffic volume, the safety of pedestrians is guaranteed, underground lava has certain risk and unpredictability, and the double-layer bidirectional steel bar net layer has certain ductility, so that the collapse speed can be properly slowed down, the rescue time is reserved for vehicles and pedestrians, the land resources are effectively utilized, the integrity of a ground system is guaranteed, and the service life of the ground is prolonged.
Description
Technical Field
The utility model relates to a road surface technical field specifically is a heavy haul road's ground structure.
Background
With the continuous development of the economy of China in recent years, the demands of places and people on high-grade roads are increasingly urgent, and the investment of the country in the aspect of infrastructure construction is also continuously increased. However, the typical road design life span is only around ten years. Meanwhile, the traffic volume is rapidly increased, the overload and overrun vehicles are often forbidden, and the actual service life of the road is far from the design requirement, so the road engineering quality becomes a focus of attention of people. Factors that affect engineering quality are many, such as: construction factors, material factors, external environment factors, geological conditions, maintenance in an operation period and the like, wherein the geological conditions are also important factors influencing the quality of road engineering.
Particularly, in a karst area, soil holes generally exist in the underground of the karst area, are buried shallow, distributed densely, developed quickly, and have low top soil body strength, so that the soil holes have great influence on the stability of a building, threaten the safety and normal use of the building to different degrees, possibly collapse and harm the personal safety. Therefore, it is desirable to provide a ground structure for a heavy load road to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heavy haul road's ground structure through double-deck two-way reinforcing bar stratum reticulare, has certain ductility, can suitably slow down the speed of collapsing, reserves the rescue time for the vehicle pedestrian, makes the soil resource obtain effective utilization, has ensured ground system's integrality, extension ground life to solve the problem of proposing in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a ground structure of a heavy-duty road comprises a base layer structure, a reinforcing layer structure and a surface layer structure which are sequentially paved from bottom to top; the base structure includes rubble cement base course, gradation rubble base course, cement stabilization rubble layer and plain concrete bed course, rubble cement base course, gradation rubble base course, cement stabilization rubble layer and plain concrete bed course are laid from bottom to top in proper order and are formed, the enhancement layer structure includes double-deck two-way steel bar stratum reticulare and double-deck reinforced concrete layer, double-deck two-way steel bar stratum reticulare laid from bottom to top in proper order and are formed, the surface course structure includes roller compacted concrete layer, rubber asphalt stress absorbing layer, AC-13 asphalt concrete layer and articulamentum, roller compacted concrete layer, rubber asphalt stress absorbing layer and AC-13 asphalt concrete layer are laid from bottom to top in proper order and are formed.
Preferably, the thickness of the gravel cement base layer is set to be 150-200mm, the gravel cement base layer is formed by stirring and mixing cement and gravel with the mesh number not higher than 10mm, the thickness of the graded gravel base layer is set to be 150mm, and the graded gravel base layer is formed by stirring and mixing cement and gravel with the mesh number not higher than 10 mm.
Preferably, the thickness of the cement stabilization gravel layer is set to be 250mm, the cement stabilization gravel layer is set to be made of 3% -5.5% of cement and gravel with the mesh number not higher than 15mm through stirring and mixing, the plain concrete cushion layer is set to be made of C25 concrete, and the thickness of the plain concrete cushion layer is set to be 100 mm.
Preferably, the double-layer bidirectional reinforced bar net layer is laid on the top of the plain concrete cushion layer, the diameter of the steel bar of the double-layer bidirectional reinforced bar net layer is set to be 200mm, the thickness of the double-layer reinforced bar concrete layer is set to be 200mm, and the double-layer reinforced bar concrete layer is set to be made of C35 concrete and double-layer steel bars.
Preferably, the paving thickness of the roller compacted concrete layer is set to be 200mm, the cement dosage of the roller compacted concrete is 8% -12%, the roller compacted concrete layer is formed by alternately splicing longitudinal seams and transverse seams, the longitudinal seams are parallel to a central line, and the transverse seams are perpendicular to the longitudinal seams.
Preferably, the connecting layer is arranged among the roller compacted concrete layer, the rubber asphalt stress absorbing layer and the AC-13 asphalt concrete layer, and the connecting layer is arranged as a modified emulsified asphalt layer.
Preferably, the rubber asphalt stress absorbing layer is set to be a combined layer of rubber asphalt and single-particle-size crushed stone, the pavement thickness of the rubber asphalt stress absorbing layer is set to be 300mm, the AC-13 asphalt concrete layer is set to be 13.2mm dense-graded fine-particle asphalt concrete, and No. 70 asphalt is adopted as asphalt of the AC-13 asphalt concrete layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the ground structure of the heavy load road is formed by laying a base layer structure, an enhancement layer structure and a surface layer structure from bottom to top in sequence, the enhancement layer structure is a double-layer bidirectional reinforced bar net layer and a double-layer reinforced concrete layer, the ground structure fully exerts the excellent physical and mechanical properties of tensile strength and compressive strength of a reinforced bar and a concrete material, and has strong adaptability to karst areas; because the anti-fatigue capability of the steel bar as the tension member is far better than that of a concrete material, the double-layer reinforced concrete pavement structure has strong adaptability to the development and change of long-term traffic volume, the safety of pedestrians is ensured, underground lava has certain risk and unpredictability, and the double-layer bidirectional steel bar net layer has certain ductility, so that the collapse speed can be properly slowed down, the rescue time is reserved for vehicles and pedestrians, the land resources are effectively utilized, the integrity of a ground system is ensured, and the service life of the ground is prolonged;
2. the utility model discloses a set up the surface course structure, the surface course structure includes roller compacted concrete layer, rubber asphalt stress absorbing layer, AC-13 asphalt concrete layer and articulamentum, adopts bituminous paving and cement road surface to combine together to set up rubber asphalt stress absorbing layer, to a great extent has alleviated the crack and has upwards reflected the road surface, has guaranteed the performance on road surface, has effectively prolonged road life, is applicable to large-scale using widely.
Drawings
Fig. 1 is a schematic view of the overall three-dimensional structure of the present invention;
FIG. 2 is a three-dimensional structure diagram of the basic structure of the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of a reinforcing layer knot of the present invention;
FIG. 4 is a schematic view of a three-dimensional structure of the surface layer structure of the present invention;
fig. 5 is a schematic view of the structure of the present invention.
Reference numbers in the figures: 1. a base layer structure; 101. a macadam cement base; 102. grading a crushed stone base layer; 103. a cement stabilized rubble layer; 104. a plain concrete cushion; 2. a reinforcement layer structure; 201. a double-layer bidirectional reinforcing steel bar net layer; 202. a double-layer reinforced concrete layer; 3. a face layer structure; 301. rolling the concrete layer; 302. a rubber asphalt stress absorbing layer; 303. an AC-13 asphalt concrete layer; 304. and (7) connecting the layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a ground structure of heavy load road as shown in figures 1-5, which comprises a basic structure 1, a reinforcing layer structure 2 and a surface layer structure 3, wherein the basic structure 1, the reinforcing layer structure 2 and the surface layer structure 3 are sequentially laid from bottom to top, the basic structure 1 comprises a broken stone cement basic layer 101, a graded broken stone basic layer 102, a cement stabilized broken stone layer 103 and a plain concrete cushion layer 104, the broken stone cement basic layer 101, the graded broken stone basic layer 102, the cement stabilized broken stone layer 103 and the plain concrete cushion layer 104 are sequentially laid from bottom to top, the reinforcing layer structure 2 comprises a double-layer bidirectional steel bar net layer 201 and a double-layer reinforced concrete layer 202, the double-layer bidirectional steel bar net layer 201 and the double-layer reinforced concrete layer 202 are sequentially laid from bottom to top, the surface layer structure 3 comprises a roller compacted concrete layer 301, a rubber asphalt stress absorbing layer 302, an AC-13 asphalt concrete layer 303 and a connecting layer 304, the roller compacted concrete layer 301, the rubber asphalt stress absorbing layer 302 and the AC-13 asphalt concrete layer 303 are sequentially paved from bottom to top.
The thickness of the gravel cement base layer 101 is set to be 150-200mm, the gravel cement base layer 101 is made by stirring and mixing cement and gravel with the mesh number not higher than 10mm, the thickness of the graded gravel base layer 102 is set to be 150mm, the graded gravel base layer 102 is made by stirring and mixing cement and gravel with the mesh number not higher than 10mm, the thickness of the cement stable gravel layer 103 is set to be 250mm, the cement stable gravel layer 103 is set to be 3% -5.5% and gravel with the mesh number not higher than 15mm, the plain concrete cushion layer 104 is made by stirring and mixing C25 concrete, the thickness of the plain concrete cushion layer 104 is set to be 100mm, the gravel cement base layer 101, the graded gravel base layer 102, the cement stable gravel layer 103 and the plain concrete cushion layer 104 are used for bearing vehicle load transmitted by the AC-13 asphalt concrete layer 303, and the gravel cement base layer 101, the graded gravel base layer 102 and the plain concrete cushion layer 104 are adopted, The cement stabilized rubble layer 103 makes a semi-rigid base layer for connecting the roadbed and the pavement, transferring pavement load and isolating the underground water.
The double-layer bidirectional reinforced concrete mesh layer 201 is laid on the top of the plain concrete cushion layer 104, the diameter of the steel bar of the double-layer bidirectional reinforced concrete mesh layer 201 is set to be 200mm, the thickness of the double-layer reinforced concrete layer 202 is set to be 200mm, the double-layer reinforced concrete layer 202 is set to be made of C35 concrete and double-layer steel bars, the excellent physical and mechanical properties of the steel bar and the concrete material in tensile strength and compression strength are fully exerted, and the adaptability to karst areas is strong; because the anti-fatigue capability of the steel bar as the tension member is far better than that of a concrete material, the double-layer reinforced concrete layer 202 has strong adaptability to the development and change of long-term traffic volume, the safety of pedestrians is guaranteed, underground lava has certain risk and unpredictability, the double-layer bidirectional steel bar net layer 201 has certain ductility, the collapse speed can be properly slowed down, the rescue time is reserved for vehicles and pedestrians, the land resources are effectively utilized, the integrity of a ground system is guaranteed, and the service life of the ground is prolonged.
The paving thickness of the roller compacted concrete layer 301 is set to be 200mm, the cement dosage of the roller compacted concrete is 8% -12%, the roller compacted concrete layer 301 is set to be spliced alternately by longitudinal joints and transverse joints, the longitudinal joints are parallel to a central line, the transverse joints are perpendicular to the longitudinal joints, the roller compacted concrete layer 301 belongs to a rigid base layer, and the roller compacted concrete layer has high strength and rigidity and good integrity and stability and is particularly suitable for being used under heavy traffic conditions.
The tie coat 304 sets up in roller compacted concrete layer 301, rubber asphalt stress absorbing layer 302 and AC-13 asphalt concrete layer 303 between, and the tie coat 304 sets up to modified emulsified asphalt layer, rubber asphalt stress absorbing layer 302 sets up the anchor coat of rubber asphalt and single particle size rubble, the thickness of paving of rubber asphalt stress absorbing layer 302 sets up to 300mm, AC-13 asphalt concrete layer 303 sets up to the fine grain formula asphalt concrete of the dense gradation of 13.2mm, and the pitch of AC-13 asphalt concrete layer 303 adopts No. 70 pitch, adopt bituminous paving and cement road surface to combine together, and set up rubber asphalt stress absorbing layer 302, to a great extent, it upwards reflects to the road surface to have alleviated the crack, the performance on road surface has been guaranteed, road life has effectively been prolonged, and is suitable for large-scale popularization and use.
When the cement-stabilized macadam base layer is used, the macadam cement base layer 101, the graded macadam base layer 102, the cement-stabilized macadam layer 103 and the plain concrete cushion layer 104 are sequentially paved from bottom to top, the macadam cement base layer 101 is prepared by stirring and mixing cement and macadams with the mesh number not higher than 10mm, the thickness of the macadam cement base layer 101 is set to be 150-200mm, the graded macadam base layer 102 is prepared by stirring and mixing cement and macadams with the mesh number not higher than 10mm, the thickness of the graded macadam base layer 102 is set to be 150mm, the thickness of the cement-stabilized macadam layer 103 is set to be 250m, the cement-stabilized macadam layer 103 is prepared by stirring and mixing 3% -5.5% cement and macadam with the mesh number not higher than 15mm, the plain concrete cushion layer 104 is prepared by C25 concrete, the thickness of the plain concrete cushion layer 104 is set to be 100mm, the macadam cement base layer 101, the graded macadam cement base layer 102, the cement-stabilized macadam layer 103 and the plain concrete cushion layer 104 are used for bearing the macadam concrete cushion layer 303 transferred by the AC-13 asphalt concrete layer The vehicle load is characterized in that a semi-rigid base layer is made of a macadam cement base layer 101, a graded macadam base layer 102 and a cement stabilized macadam layer 103 and is used for connecting a roadbed and a pavement, transmitting pavement load and isolating underground water;
then, the double-layer bidirectional reinforced bar net layer 201 is laid on the top of the plain concrete cushion layer 104, the diameter of the steel bars of the double-layer bidirectional reinforced bar net layer 201 is set to be 200mm, the thickness of the double-layer reinforced concrete layer 202 is set to be 200mm, the double-layer reinforced concrete layer 202 is made of C35 concrete and double-layer steel bars, the excellent physical and mechanical properties of the steel bars and concrete materials in tensile strength and compressive strength are fully exerted, and the adaptability to karst areas is strong; because the anti-fatigue capability of the steel bar as the tension member is far better than that of a concrete material, the double-layer reinforced concrete layer 202 has strong adaptability to the development and change of long-term traffic volume, the safety of pedestrians is guaranteed, underground lava has certain risk and unpredictability, and the double-layer bidirectional steel bar net layer 201 has certain ductility, can properly slow down the collapse speed, reserves rescue time for vehicles and pedestrians, effectively utilizes land resources, guarantees the integrity of a ground system, and prolongs the service life of the ground;
finally, a roller compacted concrete layer 301 is paved on the top of the double-layer reinforced concrete layer 202, the paving thickness is set to be 200mm, the roller compacted concrete layer 301 belongs to a rigid base layer, the strength and the rigidity are high, the integrity and the stability are good, the roller compacted concrete layer is particularly suitable for being used under heavy traffic conditions, the cement dosage of the roller compacted concrete is 8% -12%, the maximum grain size of aggregates is not more than 31.5mm, the roller compacted concrete layer 301 is provided with longitudinal joints and transverse joints which are spliced alternately, the longitudinal joints are parallel to the central line of the road, and the transverse joints are perpendicular to the longitudinal joints; the rubber asphalt stress absorbing layer 302 is a bonding layer of rubber asphalt and single-particle-size crushed stone and is of a crack reflecting structure, the rubber asphalt is sprayed on the roller compacted concrete layer 301 according to the proportion of 2-3 kg/m, the single-particle-size crushed stone is sprayed on the rubber asphalt according to the proportion of 15-22 kg/m, the particle size range of the single-particle-size crushed stone is 9.5-12 mm, the rubber asphalt is turned upwards through moderate rolling by a tire roller to reach 50-70% of the height of the crushed stone, the crushed stone is stabilized, the paving thickness of the rubber asphalt stress absorbing layer 302 is set to be 300mm, the AC-13 asphalt concrete layer 303 is set to be dense-graded fine-grain asphalt concrete of 13.2mm, the asphalt of the AC-13 asphalt concrete layer 303 adopts No. 70 asphalt, the combination of asphalt pavement and cement pavement is adopted, and the rubber asphalt stress absorbing layer 302 is arranged, so that the crack is greatly relieved from being upwards reflected to the surface of the pavement, the service performance of the road surface is ensured, the service life of the road is effectively prolonged, and the method is suitable for large-scale popularization and use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a heavy haul road's ground structure, includes infrastructure (1), enhancement layer structure (2) and surface course structure (3) laid in proper order from bottom to top, its characterized in that: the base structure (1) comprises a broken stone cement base layer (101), a graded broken stone base layer (102), a cement stabilized gravel layer (103) and a plain concrete cushion layer (104), wherein the broken stone cement base layer (101), the graded broken stone base layer (102), the cement stabilized gravel layer (103) and the plain concrete cushion layer (104) are sequentially paved from bottom to top; the reinforced layer structure (2) comprises a double-layer bidirectional reinforced mesh layer (201) and a double-layer reinforced concrete layer (202), the double-layer bidirectional reinforced mesh layer (201) and the double-layer reinforced concrete layer (202) are sequentially laid from bottom to top to form the reinforced layer structure, the surface layer structure (3) comprises a roller compacted concrete layer (301), a rubber asphalt stress absorption layer (302), an AC-13 asphalt concrete layer (303) and a connecting layer (304), and the roller compacted concrete layer (301), the rubber asphalt stress absorption layer (302) and the AC-13 asphalt concrete layer (303) are sequentially laid from bottom to top to form the reinforced layer structure.
2. The ground structure of a heavy-duty road according to claim 1, characterized in that: the double-layer bidirectional reinforced concrete cushion layer is characterized in that the double-layer bidirectional reinforced concrete net layer (201) is laid at the top of the plain concrete cushion layer (104), the diameter of a steel bar of the double-layer bidirectional reinforced concrete net layer (201) is set to be 200mm, the thickness of the double-layer reinforced concrete layer (202) is set to be 200mm, and the double-layer reinforced concrete layer (202) is set to be made of C35 concrete and double-layer steel bars.
3. The ground structure of a heavy-duty road according to claim 1, characterized in that: the connecting layer (304) is arranged among the roller compacted concrete layer (301), the rubber asphalt stress absorbing layer (302) and the AC-13 asphalt concrete layer (303), and the connecting layer (304) is arranged as a modified emulsified asphalt layer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115110358A (en) * | 2022-07-16 | 2022-09-27 | 安徽江淮汽车集团股份有限公司 | Heavy-duty vehicle endurance test field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110358A (en) * | 2022-07-16 | 2022-09-27 | 安徽江淮汽车集团股份有限公司 | Heavy-duty vehicle endurance test field |
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