CN108277713B - Roadbed laying structure for highway extension and construction method - Google Patents
Roadbed laying structure for highway extension and construction method Download PDFInfo
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- CN108277713B CN108277713B CN201810073604.7A CN201810073604A CN108277713B CN 108277713 B CN108277713 B CN 108277713B CN 201810073604 A CN201810073604 A CN 201810073604A CN 108277713 B CN108277713 B CN 108277713B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
Abstract
The invention discloses a roadbed laying structure for highway extension and a construction method, which comprises the following steps: bed course, lower basic unit, upper base layer and face layer upon layer, wherein set up the mount and increase the bonding strength of upper base layer and lower basic unit between intermediate level and ballast layer, prevent the level separation, the bed course that lies in the bottom simultaneously can strengthen structural stability, and dispersion road bed atress prevents to sink, sets up the piece of drawing between top layer and upper base layer, draws the piece to increase the bonding strength between the level, prevents that the surface course from breaking away from. Wherein, draw the inside to be one or more in steel wire, abaca fibre, carbon fiber and polytetrafluoroethylene fibre, these materials combine to make to draw the tough and tough corrosion-resistant of piece, are difficult to corroded rotten by cement, have solved the not strong problem of polytetrafluoroethylene fibre and cement or pitch adhesive force simultaneously. And the connecting part is also arranged and comprises a plurality of dovetail grooves and fixture blocks matched with the dovetail grooves, and the dovetail grooves and the fixture blocks are respectively arranged on the joint surfaces of the old road and the roadbed structure, so that the newly widened roadbed is prevented from sinking or cracking or separating relative to the old road.
Description
Technical Field
The invention relates to the field of highway reconstruction and extension engineering, in particular to a roadbed laying structure for highway extension and a construction method.
Background
With the scientific and technical progress and the rapid development of the economic society, the living standard of people is continuously improved, the high-speed travel is more and more frequent, and the road traffic capacity needs to be enlarged to meet the travel needs of people. The expansion is carried out on the basis of the original expressway lane, so that the cost is saved, the technology is tested, and when the road cannot adapt to increasing traffic volume, the original road needs to be widened. The existing road widening construction method is to generally spade the edge of the road to be widened, lay gravel, cement or asphalt and other materials, and then compact the materials to form a new roadbed. Due to differences in materials, structures and the like, and poor treatment processes of the joints, cracking, settlement and even collapse can occur between the old and new roadbeds. In order to solve the problem of cracking, however, the cement concrete pavement is often poor in flatness and poor in water permeability, so that water is easy to accumulate on the pavement in seasons with frequent rain and snow, the driving comfort of vehicles is affected, and traffic accidents are frequent, so that it is necessary to develop a road structure with stable structure and good drainage.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a roadbed laying structure for highway extension and a construction method thereof, which can connect and fasten each layer of a road base layer, make the roadbed structure more stable, and avoid the risk of cracking and collapse of a road surface due to widening of the road.
To achieve these objects and other advantages in accordance with the present invention, there is provided a roadbed laying structure for highway extension, including:
the cushion layer is formed by paving after mixing stones, slag, construction waste and sand with the diameter of 8-10 cm, and a plurality of bumps are arranged on the upper surface of the cushion layer.
The lower basic unit, it is located the bed course top, the lower surface of lower basic unit set up a plurality ofly with the pit of lug adaptation, so that the lower basic unit combines more firmly with the bed course, the bed course lug embedding the pit, the lower basic unit is laid after 8-20 millimeters's of particle size rubble, pitch, glass fiber and sand and soil mix and forms.
And the upper base layer is positioned above the lower base layer and is formed by paving after mixing graded broken stones, lime and old asphalt materials.
The cross section of the fixing frame is I-shaped, the upper half part of the fixing frame is immersed into the upper base layer, the lower half part of the fixing frame is immersed into the lower base layer, and the upper half part of the fixing frame is at least immersed into the upper base layer by half of the thickness; wherein, the mount specifically sets up to: the connecting surfaces of the upper surface, the lower surface and the middle of the fixing frame are all set as rectangular steel bar grids.
The surface layer forms the surface of the road, the surface layer is located above the upper base layer, the surface layer takes the central axis of the road surface as the highest point and extends to the two sides of the road surface, the radian is 5-8 degrees, and the surface layer is made of cement concrete or asphalt pavement.
And the connecting part comprises a plurality of dovetail grooves and fixture blocks matched with the dovetail grooves, and the dovetail grooves and the fixture blocks are respectively arranged on the joint surfaces of the old road and the roadbed structure.
Preferably, the road drainage structure further comprises a drainage layer, wherein the drainage layer is arranged below the surface layer and is formed by transversely and uniformly arranging a plurality of PP-R pipes with hollow interiors, water leakage holes are formed in the side walls of the PP-R pipes, and two ends of each PP-R pipe are connected with drainage ditches on two sides of a road.
Preferably, the width of the surface layer is smaller than that of the upper base layer, so that a groove is formed on one side of the surface layer, a permeable layer made of permeable concrete is filled in the groove, and the height of the permeable layer is equal to the edge of the surface layer.
Preferably, the gap between the bars of the upper and lower grids of the fixing frame is 10-30 cm, and the gap between the bars of the middle connecting surface grid is 20-50 cm.
Preferably, the PP-R tube has a diameter of 3 to 8 cm.
Preferably, the fixing frame further comprises a traction piece, one end of the traction piece is connected to the grating on the fixing frame, the other end of the traction piece is immersed into the surface layer to connect the surface layer and the upper base layer, and the traction piece is made of steel wires, bamboo fibers, carbon fibers and polytetrafluoroethylene fibers in a mixed mode.
Preferably, the depth of the pit is 10-35 mm, and the caliber width of the pit is 20-50 mm.
Preferably, the surface of the fixing frame is sprayed with high molecular epoxy resin and asphalt.
A construction method of a roadbed laying structure for highway extension, comprising the steps of:
firstly, digging two sides of an old road to be widened to expose the side surface of the old road, and flattening soil to form a paving surface, wherein the paving surface is lower than or equal to the bottommost layer of a roadbed structure of the old road; and sawing the side surface of the old road into a dovetail groove.
And secondly, paving a cushion layer with the thickness of 15-25 cm on the pavement surface, and pouring a plurality of bumps on the upper surface of the cushion layer before the cushion layer is not hardened.
Thirdly, laying a lower base layer on the cushion layer, manufacturing a fixing frame with the height of 25-35 cm, placing the fixing frame above the cushion layer, and positioning the fixing frame in the middle of the lower base layer in the width direction; when the asphalt pavement is paved, the fixing frame is wrapped by the old asphalt pavement material or coated with high-molecular epoxy resin and asphalt, and the lower base layer is flattened after being buried to the position of half height of the fixing frame.
And fourthly, pouring cement concrete on the lower base layer to form an upper base layer, burying the fixing frame by the cement concrete, punching a plurality of pores on the upper surface of the lower base layer before the upper base layer is not hardened, fixing one end of the traction piece on the fixing frame, and exposing the other end of the traction piece out of the upper surface of the upper base layer.
And fifthly, transversely and uniformly arranging a plurality of PP-R pipe groups with hollow interiors on the upper surface of the upper base layer to form a drainage layer.
And sixthly, continuously pouring cement concrete or asphalt concrete on the upper surface of the upper base layer to a preset height and width to form a surface layer, and then finishing, wherein a groove is formed in one side of the surface layer, a permeable layer formed by permeable concrete is filled in the groove, and the height of the permeable layer is equal to the edge of the surface layer.
The invention at least comprises the following beneficial effects:
the roadbed structure of the invention is sequentially provided with a cushion layer, a lower base layer, an upper base layer and a surface layer, wherein a fixing frame is arranged between the middle layer and the ballast layer to increase the bonding strength of the upper base layer and the lower base layer and prevent the separation of the layers, meanwhile, the cushion layer positioned at the bottom layer can enhance the structural stability, disperse the stress of the roadbed and prevent sinking, and a traction piece is arranged between the surface layer and the upper base layer to increase the bonding strength between the layers and prevent the separation of the surface layer. The traction part is made of steel wires, bamboo fibers, carbon fibers and polytetrafluoroethylene fibers in a mixed mode, the materials are combined to enable the traction part to be tough and corrosion-resistant, the traction part is not prone to being corroded and rotten by cement, and meanwhile the problem that the adhesion force of the polytetrafluoroethylene fibers and the cement or asphalt is not strong is solved. And the connecting part is also arranged and comprises a plurality of dovetail grooves and fixture blocks matched with the dovetail grooves, and the dovetail grooves and the fixture blocks are respectively arranged on the joint surfaces of the old road and the roadbed structure, so that the newly widened roadbed is prevented from sinking or cracking or separating relative to the old road.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view illustrating a roadbed laying structure for highway extension and a construction method according to the present invention;
fig. 2 is a schematic top view of a new road and an old road connecting part of the roadbed laying structure.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 and 2, the present invention provides a roadbed laying structure for highway extension, including:
and the cushion layer 18 is formed by paving after mixing stone blocks, slag, construction waste and sand with the diameter of 8-10 cm, and a plurality of lugs are arranged on the upper surface of the cushion layer.
Lower basic unit 17, it is located the bed course top, the lower surface of lower basic unit set up a plurality ofly with the pit of lug adaptation, so that lower basic unit combines more firmly with the bed course, the bed course lug embedding the pit, lower basic unit is laid after 8-20 millimeters's of particle size rubble, pitch, glass fiber and sand and soil mix and forms.
And the upper base layer 16 is positioned above the lower base layer, and is formed by paving after mixing graded broken stones, lime, asphalt and the like.
The cross section of the fixing frame 15 is I-shaped, the upper half part of the fixing frame is immersed into the upper base layer, the lower half part of the fixing frame is immersed into the lower base layer, and the upper half part of the fixing frame is at least immersed into the upper base layer by half of the thickness; wherein, the mount specifically sets up to: the connecting surfaces of the upper surface, the lower surface and the middle of the fixing frame are all set as rectangular steel bar grids.
The surface layer 13 forms the surface of the road, the surface layer 13 is located above the upper base layer 16, the surface layer 13 is arc-shaped and extends towards two sides of the road surface by taking the central axis of the road surface as the highest point, the radian is 5-8 degrees, and the surface layer 13 is a cement concrete or asphalt road surface.
And the connecting part 12 comprises a plurality of dovetail grooves and fixture blocks matched with the dovetail grooves, and the dovetail grooves and the fixture blocks are respectively arranged on the joint surfaces of the old road 10 and the roadbed structure 11.
In the scheme, the cushion layer 18 is formed by paving after mixing stone blocks, slag, construction waste and sand with the diameter of 8-10 cm, and a plurality of bumps are arranged on the upper surface of the cushion layer 18; the traditional roadbed directly uses the gravel cushion as a bottom layer, the particle size of the gravel is too small, the stress area is small, the gravel is easy to sink, the particle size of stones is large, the contact area with the soil is large, the stress can be dispersed, the sinking is reduced, the stability is kept, and the gradation of the cushion layer 18 is based on the actual situation. For example, the mass ratio of stones to crushed stones to sand is 4: 2: 1, a lower base layer 17 is positioned above a cushion layer 18, a plurality of pits matched with the bumps are formed in the lower surface of the lower base layer 17, so that the lower base layer 17 and the cushion layer 18 are combined more firmly, the bumps of the cushion layer 18 are embedded into the pits, the bonding strength of the cushion layer 18 and the lower base layer 17 can be enhanced, the two layers are prevented from being separated, and the lower base layer 17 is formed by mixing and paving broken stones, asphalt, glass fibers and sand with the particle size of 8-20 mm; the upper base layer 16 is positioned above the lower base layer 17, and the upper base layer 16 is formed by mixing and paving graded broken stones, lime and old asphalt materials; the used asphalt pavement material can be recycled, the cost is reduced, meanwhile, the old asphalt material can increase the sealing performance of the upper base layer 16, the water seepage is reduced, and the oxidation corrosion of the water seepage and air leakage to the fixing frame 15 is reduced. The traditional roadbed structure is easy to separate from layers, for example, the mass ratio of graded broken stone, lime, old asphalt pavement material and sand is 1: 1: 1: 1, a fixing frame 15, as shown in fig. 1, the cross section of which is i-shaped, wherein the upper half part of the fixing frame 15 is immersed into the upper base layer 16, the lower half part of the fixing frame 15 is immersed into the lower base layer 17, and the upper half part of the fixing frame 15 is at least immersed into the general thickness of the upper base layer 16 to ensure that the fixing frame 15 and the upper base 16 have enough bonding strength; the fixing frame 15 can increase the bonding strength and the structural strength of the upper layer and the lower layer, prevent the fault and the layer from being separated, the surface layer 13 forms the surface of the road, the surface layer 13 can be a cement concrete layer or an asphalt concrete layer, and can be set to be in a conventional thickness, or can be set to be in a slightly thicker or slightly thinner thickness according to the actual situation, for example, the thickness is set to be 20-40 cm later than the cement concrete layer.
In a preferable scheme, the width of the surface layer 13 is smaller than that of the upper base layer 16, so that a groove is formed on one side of the surface layer 13, a permeable layer 19 made of permeable concrete is filled in the groove, and the height of the permeable layer 19 is equal to the edge of the surface layer.
In above-mentioned scheme, through setting up recess and permeable bed 19, can make surface gathered water concentrate in the recess, unified emission reduces ponding and crosses the life that causes the influence to the road surface.
In a preferred scheme, the road pavement structure further comprises a drainage layer 14, wherein the drainage layer 14 is arranged below the surface layer 13, the drainage layer 14 is formed by transversely and uniformly arranging a plurality of PP-R pipes with hollow interiors, water leakage holes are formed in the side walls of the PP-R pipes, and two ends of each PP-R pipe are connected with drainage ditches on two sides of a road.
In the above scheme, by arranging the drainage layer 14 and filling the permeable layer 19 above, the moisture on the pavement permeates to the water leakage holes of the PP-R pipes through the permeable layers 19 on the two sides of the pavement, so that the pavement moisture is drained into the drainage ditch through the PP-R pipes, the risk of water accumulation on the pavement is reduced, and meanwhile, the influence of the downward seepage of the moisture on the adhesion of each layer in the pavement structure is avoided.
In a preferred scheme, the gap between the bars of the grids above and below the fixing frame 15 is 10-30 cm, and the gap between the bars of the middle connecting surface grid is 20-50 cm.
In the above scheme, the gap between the bars of the upper and lower grids of the fixing frame 15 is 10-30 cm, preferably 20 cm, and the gap between the bars of the middle connecting surface grid is 20-50 cm, preferably 35 cm, so that the upper and lower layers can be tightly fixed, and cracking can be prevented.
In a preferred embodiment, the diameter of the PP-R pipe is 3-8 cm.
In a preferable scheme, the artificial leather further comprises a traction piece, one end of the traction piece is connected to the grating on the fixing frame 15, the other end of the traction piece is immersed into the surface layer to connect the surface layer 13 and the upper base layer 16, and the traction piece is made of steel wires, bamboo fibers, carbon fibers and polytetrafluoroethylene fibers in a mixed mode.
In the scheme, the polytetrafluoroethylene fiber and the steel wire are combined in a screwing mode to form the rope core, and the bamboo fiber and the carbon fiber are matched to be screwed or woven into the rope to obtain the traction piece. The friction coefficient of the surface of the traction piece is increased, and the adhesion strength of the traction piece and the cement concrete can be enhanced.
In a preferable scheme, the depth of the pit is 10-35 mm, and the caliber width of the pit is 20-50 mm.
In the above solution, the depth of the pits is 10-35 mm, preferably 25 mm, and the aperture width of the pits is 20-50 mm, preferably 35 mm.
In a preferred embodiment, the surface of the fixing frame 15 is sprayed with high molecular epoxy resin and asphalt.
In the above scheme, the surface of the fixing frame 5 is sprayed with high molecular epoxy resin and asphalt. 5 parts of mount are buried in upper and lower basic unit 17, there is the clearance between the granule of upper and lower basic unit, easy infiltration and gas leakage, consequently easy oxidation mount, the spraying pitch has not only strengthened mount 15 and the bonding strength of upper and lower basic unit, polymer epoxy has excellent bonding strength, and hardness is high, the pliability is good, good waterproof performance still simultaneously, certain elasticity and ductility can also make the layer-to-layer have, the removal harm between the layer has been reduced, the life-span of road surface structure is improved, can also prevent that the mount from being by oxidation corrosion.
A construction method of a roadbed laying structure for highway extension, comprising the steps of:
firstly, digging two sides of an old road to be widened to expose the side surface of the old road, and flattening soil to form a paving surface, wherein the paving surface is lower than or equal to the bottommost layer of a roadbed structure of the old road; according to specific conditions, if the old road is thinner, the pavement can be dug a bit for keeping the surface of the new road and the old road flat, and if the old road is thick enough, the pavement can be kept flat or slightly lower; and sawing the side surface of the old road into a dovetail groove.
And secondly, paving a 15-25 cm thick cushion layer 18 on the pavement, pouring a plurality of bumps on the upper surface of the cushion layer 18 before the cushion layer 18 is not hardened, wherein the bumps can be set to be conical, the height of the bumps is at least less than half of the thickness of the lower base layer 17, and the bumps are prevented from being too high and being not well adhered with the lower base layer 17, but forming cracks on the pavement.
Thirdly, laying a lower base layer 19 on the cushion layer 18, manufacturing a fixing frame 15 with the height of 25-35 cm, setting the height of the fixing frame 15 to be 30 cm, setting the thickness of the corresponding lower base layer 17 to be 40 cm, placing the fixing frame 15 above the cushion layer, and positioning the fixing frame 15 in the middle of the lower base layer 17 in the width direction; when the asphalt pavement old material is paved, the fixing frame 15 is wrapped by the asphalt pavement old material or the fixing frame 15 is coated with high molecular epoxy resin and asphalt, and the lower base layer 17 is buried to a position half the height of the fixing frame 15 and then is flattened.
And step four, pouring concrete such as graded broken stone, lime, asphalt and the like on the lower base layer 17 to form an upper base layer 16, burying the fixing frame 15 by the cement concrete, punching a plurality of fine holes on the upper surface of the lower base layer 17 before the upper base layer 16 is not hardened, fixing one end of the traction piece on the fixing frame 15, and exposing the other end of the traction piece out of the upper surface of the upper base layer 16 through the fine holes.
And step five, transversely and uniformly arranging a plurality of PP-R pipes with hollow interiors on the upper surface of the upper base layer 16 to form a drainage layer 14.
And sixthly, continuously pouring cement concrete or asphalt concrete on the upper surface of the upper base layer 16 to a preset height and width to form a surface layer 13, and then finishing, forming a groove on one side of the surface layer 13, filling a permeable layer 19 formed by permeable concrete in the groove, wherein the height of the permeable layer 19 is equal to the edge of the surface layer 13.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. A subgrade laying structure for highway extension, comprising:
the cushion layer is formed by paving after mixing stones, slag, construction waste and sand with the diameter of 8-10 cm, and a plurality of bumps are arranged on the upper surface of the cushion layer;
the lower base layer is positioned above the cushion layer, a plurality of pits matched with the bumps are formed in the lower surface of the lower base layer, so that the lower base layer and the cushion layer are combined more firmly, the cushion layer bumps are embedded into the pits, and the lower base layer is formed by mixing and paving broken stones, asphalt, glass fibers and sand with the particle size of 8-20 mm;
the upper base layer is positioned above the lower base layer and is formed by mixing and paving graded broken stones, lime and old asphalt materials;
the cross section of the fixing frame is I-shaped, the upper half part of the fixing frame is immersed into the upper base layer, the lower half part of the fixing frame is immersed into the lower base layer, and the upper half part of the fixing frame is at least immersed into the upper base layer by half of the thickness; wherein, the mount specifically sets up to: the upper surface, the lower surface and the middle connecting surface of the fixing frame are all provided with rectangular steel bar grids;
the surface layer forms the surface of the road, the surface layer is positioned above the upper base layer, the surface layer takes the central axis of the road surface as the highest point and extends to the two sides of the road surface, the radian is 5-8 degrees, and the surface layer is a cement concrete or asphalt road surface;
and the connecting part comprises a plurality of dovetail grooves and fixture blocks matched with the dovetail grooves, and the dovetail grooves and the fixture blocks are respectively arranged on the joint surfaces of the old road and the roadbed structure.
2. The roadbed paving structure for the highway according to claim 1, further comprising a drainage layer, wherein the drainage layer is arranged below the surface layer, the drainage layer is formed by transversely and uniformly arranging a plurality of PP-R pipes with hollow interiors, water leakage holes are formed in the side walls of the PP-R pipes, and two ends of the PP-R pipes are connected with drainage ditches on two sides of the road.
3. A roadbed laying structure for highway extension as claimed in claim 1, wherein the width of said surface course is smaller than that of said upper base course so that a groove is formed at one side of said surface course, said groove is filled with a permeable layer made of permeable concrete, and the height of said permeable layer is equal to the edge of said surface course.
4. A roadbed laying structure for road extension as claimed in claim 1, wherein the gap between the bars of the upper and lower grilles of said fixing frame is 10-30 cm, and the gap between the bars of the middle connecting surface grille is 20-50 cm.
5. A subgrade laying structure for highway extension according to claim 2, wherein said PP-R pipe has a diameter of 3-8 cm.
6. A roadbed laying structure for highway extension as claimed in claim 1, further comprising a traction member, one end of said traction member is connected to the grating on said fixing frame, and the other end is submerged in said surface layer to connect said surface layer and said upper base layer, said traction member is made of a mixture of steel wire, bamboo fiber, carbon fiber and polytetrafluoroethylene fiber.
7. A subgrade laying structure for highway extension according to claim 1, wherein the depth of said pits is 10-35 f
And the caliber width of the pit is 20-50 mm.
8. A roadbed paving structure for highway according to claim 1, wherein the exterior of said fixed frame is coated with high molecular epoxy resin and asphalt.
9. A construction method of a roadbed laying structure for highway extension, comprising the steps of:
firstly, digging two sides of an old road to be widened to expose the side surface of the old road, and flattening soil to form a paving surface, wherein the paving surface is lower than or equal to the bottommost layer of a roadbed structure of the old road; sawing the side surface of the old road into a dovetail groove;
secondly, paving a cushion layer with the thickness of 15-25 cm on the pavement surface, and pouring a plurality of bumps on the upper surface of the cushion layer before the cushion layer is not hardened;
thirdly, laying a lower base layer on the cushion layer, manufacturing a fixing frame with the height of 25-35 cm, placing the fixing frame above the cushion layer, and positioning the fixing frame in the middle of the lower base layer in the width direction; when the asphalt pavement is paved, the fixing frame is wrapped by using the old asphalt pavement material or coated with high-molecular epoxy resin and asphalt, and the lower base layer is flattened after being buried to the position of half height of the fixing frame;
pouring a mixture of graded broken stone, lime and old asphalt materials on the lower base layer to form a concrete upper base layer, burying the fixing frame in the concrete, punching a plurality of pores on the upper surface of the lower base layer before the upper base layer is not hardened, fixing one end of the traction piece on the fixing frame, and exposing the other end of the traction piece out of the upper surface of the upper base layer;
step five, transversely and uniformly arranging a plurality of PP-R pipe groups with hollow interiors on the upper surface of the upper base layer to form a drainage layer;
and sixthly, continuously pouring cement concrete or asphalt concrete on the upper surface of the upper base layer to a preset height and width to form a surface layer, and then finishing, wherein a groove is formed in one side of the surface layer, a permeable layer formed by permeable concrete is filled in the groove, and the height of the permeable layer is equal to the edge of the surface layer.
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| CN110067166B (en) * | 2019-04-12 | 2021-06-08 | 新疆北新路桥集团股份有限公司 | Anti-seismic road structure and construction method thereof |
| CN110644309B (en) * | 2019-09-26 | 2022-01-18 | 山东大学 | Roadbed drainage structure, system and construction method |
| CN110644321A (en) * | 2019-09-27 | 2020-01-03 | 浙江万瑞建设有限公司 | Road paving method |
| CN112411291B (en) * | 2020-11-26 | 2022-01-11 | 南通市市政工程设计院有限责任公司 | Town road laying structure |
| CN113026473B (en) * | 2021-03-24 | 2023-01-10 | 上海瀛盛市政工程有限公司 | Road widening construction method |
| CN113550188A (en) * | 2021-07-02 | 2021-10-26 | 山东昆嵛路桥工程有限公司 | Shock-proof type anti-cracking highway |
| CN113981765A (en) * | 2021-09-15 | 2022-01-28 | 湖北力天生态景观有限公司 | Colored concrete garden road with water permeability and construction method thereof |
| CN115893936B (en) * | 2022-11-01 | 2024-04-16 | 山东高速股份有限公司 | Pouring type large-thickness water-stabilized macadam base layer and paving method thereof |
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| CN103741569B (en) * | 2013-12-18 | 2016-08-17 | 山东省交通科学研究院 | A kind of old road based on drainage crack resistance enlarging splicing construction and method |
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| CN108277713A (en) | 2018-07-13 |
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