CN114635324A - Asphalt pavement and construction method thereof - Google Patents

Asphalt pavement and construction method thereof Download PDF

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Publication number
CN114635324A
CN114635324A CN202210325276.1A CN202210325276A CN114635324A CN 114635324 A CN114635324 A CN 114635324A CN 202210325276 A CN202210325276 A CN 202210325276A CN 114635324 A CN114635324 A CN 114635324A
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China
Prior art keywords
layer
drainage
reinforcing
pavement
pipe
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CN202210325276.1A
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Chinese (zh)
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CN114635324B (en
Inventor
何俊彪
李鹏琳
杨佳岩
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China Harbour Engineering Co Ltd
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China Harbour Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/32Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/16Reinforcements
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/22Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224Surface drainage of streets
    • E01C11/225Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
    • E01C11/226Coherent pavings
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/22Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224Surface drainage of streets
    • E01C11/227Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00Foundations for pavings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention discloses an asphalt pavement, which sequentially comprises a foundation layer, a waterproof layer, a drainage layer, a reinforcing layer and a pavement layer from bottom to top, wherein the pavement layer comprises an asphalt layer and a concrete layer from top to bottom; the first reinforcing mechanisms and the second reinforcing mechanisms divide the concrete layer into a plurality of unit blocks which are distributed in a matrix mode and are not in contact with each other. The invention ensures the hydrophobic and water permeability performance of the pavement, improves the structural strength of the pavement and prolongs the service life of the asphalt pavement.

Description

Asphalt pavement and construction method thereof
Technical Field
The invention relates to the technical field of pavement construction. More specifically, the present invention relates to an asphalt pavement and a construction method thereof.
Background
The asphalt pavement is the most widely applied pavement in road construction, and in the existing asphalt pavement construction, the improvement of the drainage performance of the urban pavement is often taken as a technical key point, so that an engineering center is more inclined to solve the problem of pavement drainage unilaterally in the pavement construction process, the structural strength of the asphalt pavement is neglected, the constructed asphalt pavement has excellent water permeability and drainage performance, but the pavement is easy to collapse and crack in the use process, the asphalt pavement needs to be repaired regularly, time and labor are wasted, and the service life of the asphalt pavement is greatly reduced; in addition, a large amount of water permeates into the foundation to wet the foundation, so that the foundation is aged and cracked.
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 an asphalt pavement, which can improve the structural strength of the pavement and prolong the service life of the asphalt pavement while ensuring the hydrophobic and water-permeable properties of the pavement.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an asphalt pavement comprising, in order from bottom to top, a ground base layer, a waterproof layer, a drainage layer, a reinforcement layer, and a pavement layer; the pavement layer comprises an asphalt layer and a concrete layer from top to bottom, a plurality of first reinforcing mechanisms are arranged in the concrete layer at intervals along the longitudinal direction, any one first reinforcing mechanism is a strip-shaped structure extending to two sides of the pavement along the transverse direction, any two adjacent first reinforcing mechanisms are connected through a plurality of second reinforcing mechanisms distributed along the transverse direction at intervals, any one second reinforcing mechanism is a strip-shaped structure extending along the longitudinal direction, and the top surface and the bottom surface of any one first reinforcing mechanism and any one second reinforcing mechanism are respectively flush with the top surface and the bottom surface of the concrete layer; the concrete layer is divided into a plurality of unit blocks which are distributed in a matrix manner and are not in contact with each other by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms; any first reinforcing mechanism comprises a strip-shaped first metal mesh frame extending along the transverse direction, any second reinforcing mechanism comprises a strip-shaped second metal mesh frame extending along the longitudinal direction, and broken stones with the particle size of 20-30 mm are filled in any first metal mesh frame and any second metal mesh frame.
Preferably, bituminous paving, the enhancement layer include two cement boards that stack along vertical direction, be equipped with a plurality of first drainage holes that link up along vertical direction on arbitrary cement board, equal interval is equipped with a plurality of tenons and a plurality of tongue-and-groove on the relative both sides face that sets up of two cement boards, arbitrary tenon on one of them cement board can hold in a tongue-and-groove on another cement board, an arbitrary tongue-and-groove can hold a tenon on another cement board.
Preferably, a metal filter screen is laid between the reinforcing layer and the pavement layer of the asphalt pavement.
Preferably, the longitudinal vertical section of any first metal mesh frame and the transverse vertical section of any second metal mesh frame of the asphalt pavement are both cross-shaped.
Preferably, bituminous paving, the waterproof layer with be provided with the transition layer between the foundation layer, the transition layer is that natural stone transversely is the arch that the centre is high both sides is low along the road surface and lays and form, the even cover of waterproof layer thickness is located on the transition layer, the waterproof layer is made jointly through tarpaulin, waterproof glue and rubber asphalt and is formed.
Preferably, the drainage layer of the asphalt pavement sequentially comprises a glass fiber geogrid layer, a permeable layer and geotextile from bottom to top; the glass fiber geogrid layer is of an arch structure laid on the top surface of the waterproof layer, the geotextile is horizontally arranged, the glass fiber geogrid layer and the geotextile are filled with aggregates formed by broken stones and coarse sand in a weight ratio of 2:1 to form the permeable layer, a plurality of first drainage pipes are longitudinally arranged in the permeable layer at intervals, any one first drainage pipe is of an arch structure, two ends of the first drainage pipe extend to the two transverse sides of the road surface, a plurality of second drainage holes are formed in the first drainage pipe at intervals, and a plurality of water guide plates of an arc structure extending obliquely downwards are arranged on the outer wall of the first drainage pipe at intervals.
Preferably, bituminous paving, still include two drainage mechanism, it locates the horizontal both sides on road surface respectively, arbitrary drainage mechanism includes:
the water storage pipes are arranged at intervals along the longitudinal direction, one water storage pipe is correspondingly arranged on one first water drainage pipe, the end part of each first water drainage pipe is communicated with the corresponding water storage pipe, the upper end of any water storage pipe is flush with the bottom of the asphalt layer, the lower end of any water storage pipe vertically extends downwards into the transition layer, a plurality of third water drainage holes are arranged on one side, close to the road surface, of each water storage pipe at intervals, an exhaust pipe communicated with the outside is arranged at the top of each water storage pipe, and a first one-way valve is arranged in each water storage pipe;
a plurality of second drain pipes, it sets up along vertical interval, the top of arbitrary second drain pipe with the top on pitch layer flushes, the vertical downwardly extending in bottom and with the escape canal intercommunication, escape canal and municipal drainage pipe network intercommunication, the equal level inscription in top and the bottom of second drain pipe has the filter screen, and arbitrary retaining pipe passes through the aqueduct intercommunication with one of them second drain pipe, is equipped with the second check valve in arbitrary aqueduct.
The invention also provides a construction method of the asphalt pavement, which comprises the following steps:
step A, tamping a soil layer, and paving a foundation layer on the soil layer;
b, paving a waterproof layer, a drainage layer and a reinforcing layer on the foundation layer in sequence;
step C, according to the requirement of the strength grade of the pavement, a plurality of first metal mesh frames are arranged at intervals along the longitudinal direction, a plurality of second metal mesh frames are arranged between any two adjacent first metal mesh frames at intervals along the transverse direction, any second metal mesh frame is connected with any two adjacent first metal mesh frames, and gravels with the grain diameter of 20-30 mm are filled in any first metal mesh frame and any second metal mesh frame so as to form a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms;
d, binding reinforcing steel bars and pouring concrete in any empty space formed by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms to form a unit block, wherein the top surface of the unit block is flush with the top surfaces of the first reinforcing mechanisms/the second reinforcing mechanisms; forming a concrete layer after all the unit blocks are manufactured;
and E, paving an asphalt layer on the upper surface of the concrete layer and compacting.
The invention at least comprises the following beneficial effects:
1. the asphalt pavement comprises a foundation layer, a waterproof layer, a drainage layer, a reinforcing layer and a pavement layer from bottom to top, wherein the waterproof layer is arranged to prevent water flow from downwards permeating into the foundation layer structure, so that the drying environment of the foundation layer structure is always kept, the problem that the foundation layer is damaged due to the fact that water seeps into the foundation layer to cause water accumulation is avoided, and the stability and the durability of the foundation layer structure are improved; the reinforced layer is arranged between the drainage layer and the pavement layer, so that the drainage performance of the middle part of the pavement can be guaranteed, the structural strength of the middle part of the pavement can be improved, the pavement layer is designed to be of a two-layer structure of an anti-skid elastic asphalt layer and a concrete layer with higher structural strength, the drainage performance of the upper part of the pavement is guaranteed, the structural strength of the upper part of the pavement is improved, the integral drainage performance of the asphalt pavement is improved, the integral structural strength of the pavement can be improved, and the effect of prolonging the service life of the asphalt pavement is achieved;
2. according to the invention, the concrete layer is divided into the unit blocks of a plurality of grid-shaped grids by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms, one reinforcing mechanism is clamped between any two adjacent unit grids, and the existence of the reinforcing mechanisms reserves a telescopic space for the unit blocks made of concrete materials, so that the problem of surface layer cracking caused by expansion caused by heat and contraction caused by cold of the concrete layer is avoided, and the concrete reinforcing mechanisms are specifically as follows: when the unit blocks of the concrete layer shrink due to cooling, the asphalt layer has certain elasticity, gaps between the unit blocks and the reinforcing mechanism caused by shrinkage of the unit blocks can be timely made up, the structural strength of the pavement is guaranteed, when the unit blocks of the concrete layer expand due to heating, the reinforcing mechanism has certain extrusion performance, an expansion space is timely provided for the unit blocks by matching with the elasticity performance of the asphalt layer, and the phenomenon that the pavement is bulged and cracked due to heating expansion of the concrete layer is avoided; compared with the prior art that the expansion joint is directly cut on the concrete layer, the reinforcing mechanism provided by the invention has higher structural strength while reserving the expansion space for the concrete unit block, and can improve the structural strength of the pavement;
3. according to the invention, the plurality of first drainage pipes are arranged in the water permeable layer between the glass fiber geogrid layer and the geotextile to form a drainage layer with excellent drainage, so that water can be quickly and timely drained into drainage pipe nets on two sides of a road surface, the glass fiber geogrid layer and the geotextile can stabilize the effect of filling aggregates, deformation and displacement of the filling aggregates under impact of flowing water are avoided, and the glass fiber soil grid layer and the geotextile can ensure the structural stability of the drainage layer; the arched first drainage pipe forms a downward water flow path which inclines towards the direction close to two sides of the road surface, and can guide water to the drainage treatment system at two sides of the road surface quickly and timely, so as to improve the drainage effect of the invention, the first drainage pipe is provided with a plurality of second drainage holes and water deflectors at intervals, preferably, the outer edge of each second drainage hole is provided with a water deflector with an arc structure, road surface water flows downwards into the drainage layer through the pavement layer and the reinforcing layer, enters the first drainage pipe through the plurality of second drainage holes at the upper part of the first drainage pipe, and is obliquely discharged downwards to two transverse sides of the road surface along the first drainage pipe, because the outer edges of the second drainage holes are provided with a water deflector, the water flow can pass through the second drainage holes, meanwhile, broken stones and coarse sand can be prevented from entering, the second drainage holes are prevented from being blocked by the broken stones and the coarse sand, and the water entering the first drainage pipe passes through the second drainage holes at the lower part, also can incline downward flow under a plurality of water deflectors of first drain pipe lower part effect, the water deflector has played the effect of fine guide rivers, avoids the rubble grit to block up the second drain hole, and the water deflector has increased the roughness of first drain pipe outer wall simultaneously, avoids interior rubble of drainage blanket, grit to be washed away along with the rivers. The drainage layer provided by the invention has excellent drainage performance and higher structural stability, and achieves the effect of improving the drainage performance of the pavement and the structural strength of the pavement.
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 cross-sectional view of an asphalt pavement according to one embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of an asphalt pavement according to another embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a schematic view showing a first drain pipe according to another embodiment of the present invention;
fig. 5 is a top view of a concrete layer according to another embodiment of the present invention.
Description of reference numerals: 1-a ground layer; 2-waterproof layer; 3-a drainage layer; 4-a reinforcing layer; 5-pavement layer; 51-an asphalt layer; 52-concrete layer; 53-a first reinforcement mechanism; 54-a second reinforcement mechanism; 6-metal filter screen; 41-cement board; 42-a first drain hole; 43-tenon; 44-tongue and groove; 31-a fiberglass geogrid layer; 32-a water permeable layer; 33-geotextile; 34-a first drain pipe; 341-second drain hole; 342-a water guide plate; 81-water storage pipe; 82-an exhaust pipe; 83-a second drain pipe; 84-a drainage ditch; 85-a filter screen; 86-a water conduit; 91-a rotating shaft; 92-a cleaning brush; 93-a sleeve; 94-a movable plate; 95-a first spring; 96-second spring.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can implement the invention with reference to the description.
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.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the present invention provides an asphalt pavement, which sequentially comprises a foundation layer, a waterproof layer 2, a drainage layer, a reinforcing layer 4 and a pavement layer from bottom to top; the pavement layer comprises an asphalt layer 51 and a concrete layer 52 from top to bottom, a plurality of first reinforcing mechanisms 53 are arranged in the concrete layer 51 at intervals along the longitudinal direction, any first reinforcing mechanism 53 is a strip-shaped structure extending to two sides of the pavement along the transverse direction, any two adjacent first reinforcing mechanisms 53 are connected through a plurality of second reinforcing mechanisms 54 distributed along the transverse direction at intervals, any second reinforcing mechanism 54 is a strip-shaped structure extending along the longitudinal direction, and the top surface and the bottom surface of any first reinforcing mechanism 53 and any second reinforcing mechanism 54 are respectively flush with the top surface and the bottom surface of the concrete layer; the plurality of first reinforcing mechanisms 53 and the plurality of second reinforcing mechanisms 54 divide the concrete layer into a plurality of unit blocks which are distributed in a matrix and are not in contact with each other; any first reinforcing mechanism comprises a strip-shaped first metal mesh frame extending along the transverse direction, any second reinforcing mechanism comprises a strip-shaped second metal mesh frame extending along the longitudinal direction, and broken stones with the particle size of 20-30 mm are filled in any first metal mesh frame and any second metal mesh frame.
In the technical scheme, the asphalt pavement comprises a foundation layer, a waterproof layer, a drainage layer, a reinforcing layer and a pavement layer from bottom to top, wherein the waterproof layer is arranged to prevent water from downwards permeating into the foundation layer structure and keep the drying environment of the foundation layer structure all the time, so that the problem that the foundation layer is damaged due to the fact that water seeps into the foundation layer to cause water accumulation is avoided, and the stability and the durability of the foundation layer structure are improved; set up the enhancement layer between drainage blanket and pavement layer, can be when guaranteeing the drainage performance at road surface middle part, improve the structural strength at road surface middle part, the pavement layer design is the two-layer structure of the great concrete layer of antiskid elastic's pitch layer and structural strength, when guaranteeing the drainage performance on road surface upper portion, improve the structural strength on road surface upper portion, when finally having realized that the holistic drainage performance of bituminous paving promotes, still can improve the holistic structural strength in road surface, and then reach extension bituminous paving life's effect.
In the technical scheme, the concrete layer is divided into the unit blocks of the plurality of grid-shaped grids by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms, one reinforcing mechanism is clamped between any two adjacent unit grids, the telescopic space is reserved for the unit blocks made of the concrete material in the reinforcing mechanisms, and the problem of surface layer cracking caused by expansion with heat and contraction with cold of the concrete layer is solved, and the concrete reinforcing mechanisms are specifically as follows: when the unit blocks of the concrete layer shrink due to cooling, the asphalt layer has certain elasticity, gaps between the unit blocks and the reinforcing mechanism caused by shrinkage of the unit blocks can be timely made up, the structural strength of the pavement is guaranteed, when the unit blocks of the concrete layer expand due to heating, the reinforcing mechanism has certain extrusion performance, an expansion space is timely provided for the unit blocks by matching with the elasticity performance of the asphalt layer, and the phenomenon that the pavement is bulged and cracked due to heating expansion of the concrete layer is avoided; compared with the prior art that the expansion joint is directly cut in the concrete layer, the reinforcing mechanism provided by the invention has higher structural strength while reserving the expansion space for the concrete unit block, and can improve the structural strength of the pavement.
In fig. 1, the direction parallel to the screen is the horizontal direction, and the direction perpendicular to the screen is the vertical direction; FIG. 2 shows a longitudinal direction parallel to the screen and a transverse direction perpendicular to the screen; in fig. 5, the direction parallel to the screen is a vertical direction, and the direction perpendicular to the screen is a horizontal direction.
In another technical solution, the asphalt pavement, the reinforcing layer 4 includes two cement boards 41 stacked in a vertical direction, a plurality of first drainage holes 42 penetrating in the vertical direction are formed in any one of the cement boards 41, a plurality of tenons 44 and a plurality of mortises 43 are formed on two opposite side surfaces of the two cement boards 41 at intervals, any tenon 44 on one of the cement boards 41 can be accommodated in one mortise 43 on the other cement board, and any mortise 43 can be accommodated in one tenon 44 on the other cement board.
In the technical scheme, the two superposed cement boards are used as the reinforcing layer, so that the mechanical strength of the pavement is further improved, the first drainage holes formed in the cement boards can convey water downwards, the water permeability and drainage of the pavement are guaranteed, the two cement boards are directly matched through the mortises and the tenons, the firmness of connection between the two cement boards is improved, and in practical application, the adhesive can be arranged between the mortises and the tenons, so that the connection stability of the cement boards is further improved.
In another technical scheme, a metal filter screen 6 is laid between the reinforcing layer 4 and the pavement layer of the asphalt pavement. Set up metal filter screen 6 and can filter the impurity in the rivers, avoid impurity to block up first drainage hole, further improve the road surface and permeate water, drainage performance.
In another technical scheme, the longitudinal vertical section of any first metal net frame and the transverse vertical section of any second metal net frame of the asphalt pavement are both in a cross shape. The vertical cross section of any first metal mesh frame and any second metal mesh frame is set to be cross-shaped, so that strip-shaped convex blocks which horizontally extend into the unit blocks of the concrete layer can be formed on two sides of the first metal mesh frame and the second metal mesh frame, and the stability of connection between the reinforcing mechanism and the unit blocks is improved.
In another technical scheme, bituminous paving, waterproof layer 2 with be provided with transition layer 7 between the foundation layer, the transition layer is that the arch that the middle height both sides are low is transversely laid along the road surface for natural stone and forms, the even cover of 2 thickness of waterproof layer is located on the transition layer 7, waterproof layer 2 forms through tarpaulin, waterproof glue and rubber asphalt common preparation. Among the above-mentioned technical scheme, set up the transition layer between waterproof layer and basement layer, improve the structural strength of waterproof layer, adopt tarpaulin, waterproof glue and rubber asphalt to make the waterproof layer jointly, guarantee the water-proof effects of waterproof layer, avoid water infiltration ground downwards, lead to the inside ponding that appears of ground and then make the ground damage.
In another technical scheme, the drainage layer of the asphalt pavement sequentially comprises a glass fiber geogrid layer, a permeable layer and geotextile from bottom to top; the glass fiber geogrid layer is of an arch structure laid on the top surface of a waterproof layer, the geotextile is horizontally arranged, aggregates formed by broken stones and coarse sand in a weight ratio of 2:1 are filled between the glass fiber geogrid layer and the geotextile to form the permeable layer, a plurality of first drainage pipes 34 are longitudinally arranged in the permeable layer at intervals, any one first drainage pipe 34 is of an arch structure, two ends of the first drainage pipe 34 extend to the two transverse sides of the road surface, a plurality of second drainage holes 341 are arranged on the first drainage pipes at intervals, and a plurality of water guide plates 342 of an arc structure extending obliquely downwards are arranged on the outer wall of the first drainage pipe 341 at intervals.
In the technical scheme, the first drainage pipes are arranged in the water permeable layer between the glass fiber geogrid layer and the geotextile to jointly form a drainage layer with excellent drainage, so that water can be quickly and timely drained into drainage pipe nets on two sides of a pavement, the glass fiber geogrid layer and the geotextile can stabilize the filling aggregate, deformation and displacement of the filling aggregate under the impact of flowing water are avoided, and the glass fiber soil grid layer and the geotextile can ensure the structural stability of the drainage layer; the arched first drainage pipe forms a downward water flow path which inclines towards the direction close to two sides of the road surface, and can guide water to the drainage treatment system at two sides of the road surface quickly and timely, so as to improve the drainage effect of the invention, the first drainage pipe is provided with a plurality of second drainage holes and water deflectors at intervals, preferably, the outer edge of each second drainage hole is provided with a water deflector with an arc structure, road surface water flows downwards into the drainage layer through the pavement layer and the reinforcing layer, enters the first drainage pipe through the plurality of second drainage holes at the upper part of the first drainage pipe, and is obliquely discharged downwards to two transverse sides of the road surface along the first drainage pipe, because the outer edges of the second drainage holes are provided with a water deflector, the water flow can pass through the second drainage holes, meanwhile, broken stones and coarse sand can be prevented from entering, the second drainage holes are prevented from being blocked by the broken stones and the coarse sand, and the water entering the first drainage pipe passes through the second drainage holes at the lower part, also can incline downward flow under a plurality of water deflectors of first drain pipe lower part effect, the water deflector has played the effect of fine guide rivers, avoids the rubble grit to block up the second drain hole, and the water deflector has increased the roughness of first drain pipe outer wall simultaneously, avoids interior rubble of drainage blanket, grit to be washed away along with the rivers. The drainage layer provided by the invention has excellent drainage performance and higher structural stability, and achieves the effect of improving the drainage performance of the pavement and the structural strength of the pavement.
In another technical scheme, bituminous paving still include two drainage mechanism, it locates the horizontal both sides on road surface respectively, arbitrary drainage mechanism includes:
a plurality of water storage pipes 81 are arranged at intervals along the longitudinal direction, one water storage pipe 81 is correspondingly arranged on one first water drainage pipe 34, the end part of the first water drainage pipe 34 is communicated with the corresponding water storage pipe 81, the upper end of any water storage pipe 81 is flush with the bottom of the asphalt layer, the lower end of the water storage pipe vertically extends downwards into the transition layer, a plurality of third water drainage holes are arranged at intervals on one side of the water storage pipe close to the road surface, an exhaust pipe 82 communicated with the outside is arranged at the top of the water storage pipe 81, and a first one-way valve is arranged in the exhaust pipe;
the second water drainage pipes 83 are arranged at intervals along the longitudinal direction, the top of any one of the second water drainage pipes 83 is flush with the top of the asphalt layer, the bottom of the second water drainage pipe 83 extends vertically downwards and is communicated with a drainage ditch 84, the drainage ditch is communicated with a municipal drainage pipe network, filter screens 85 are horizontally and internally connected to the top and the bottom of the second water drainage pipe 83, any one of the water storage pipes 81 is communicated with one of the second water drainage pipes 83 through a water guide pipe 86, and a second one-way valve is arranged in any one of the water guide pipes 86.
In the technical scheme, the two lateral sides of the road surface are respectively provided with the drainage mechanism with self-absorption drainage performance, and water on the road surface layer can be quickly and timely drained to the municipal drainage pipe network through the two drainage mechanisms towards the lateral sides of the road surface, so that the drainage performance towards the two sides of the road surface is improved.
In the above technical scheme, first check valve, second check valve set up to: the first one-way valve allows gas inside the water storage pipe to be upwards discharged through the exhaust pipe, and does not allow external gas to enter the water storage pipe through the exhaust pipe; when the water amount in the water storage pipe is lower than a first preset value, the second one-way valve is in a closed state, when the water in the water storage pipe reaches the first preset value, the second one-way valve is opened to allow the water in the water storage pipe to be discharged into the second water discharge pipe through the water guide pipe, and when the water in the water storage pipe is reduced to the second preset value, the second one-way valve is completely closed; the second preset value is smaller than the first preset value;
the water in the pavement layer enters the water storage pipe through the water drainage layer and the third water drainage holes, when the water quantity in the water storage pipe is gradually increased, the gas in the water storage pipe can be discharged through the exhaust pipe at the top part due to the increase of the water quantity, when the water quantity in the water storage pipe reaches a first preset value, the second one-way valve in the water guide pipe is pushed open, the water in the water storage pipe is discharged into the second water discharge pipe through the water guide pipe, the water quantity in the water storage pipe gradually becomes small, the second one-way valve is gradually closed, when the water quantity in the water storage pipe is lower than a second preset value, the second one-way valve is completely closed, a certain vacuum degree exists in the water storage pipe at the moment, the pressure difference exists between the water storage pipe and the road surface, can promote the water on the road surface layer to be automatically and quickly discharged into the water storage pipe, improve the water discharge efficiency, when the water in the water storage pipe reaches the first preset value again, the second one-way valve is opened again, and the water accumulated in the water storage pipe can be quickly discharged into the second water discharge pipe;
the second one-way valve is opened and closed automatically in a circulating and reciprocating mode, and drainage of the water storage pipe is formed as if water is drained in a stage opening mode, so that the drainage efficiency is greatly improved, and water on the pavement layer can be drained to municipal drainage pipe networks on two sides of the pavement more quickly and timely.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: bituminous paving, be equipped with clear hole mechanism in arbitrary second drain pipe, arbitrary clear hole mechanism includes:
a rotating shaft 91 coaxially arranged in the second water discharge pipe 83, wherein both ends of the rotating shaft 91 are rotatably connected with the two filter screens 85 respectively;
two cleaning brushes 92, one cleaning brush 92 is correspondingly arranged on the upper surface of any filter screen 85, one end of any cleaning brush 92 is fixedly connected with the rotating shaft 91, the other end of the cleaning brush 92 extends along the radial direction of the second drain pipe 83, and the bristles of the cleaning brush 92 are in contact with the upper surface of the filter screen 85;
a plurality of sleeves 93, which are arranged in the second drain pipe 92 at intervals along the vertical direction, wherein any sleeve 93 is coaxially sleeved outside the rotating shaft 91 and is spirally and rotatably connected with the rotating shaft 91;
a plurality of movable plates 94, one sleeve 93 is correspondingly provided with one movable plate 94, any movable plate 94 is a horizontal circular ring structure sleeved on the sleeve 93, a plurality of fourth drain holes (penetrating along the vertical direction) are arranged on the movable plate 94 at intervals, and two sides of the movable plate 94 are respectively connected with the inner wall of the second drain pipe 92 in a sliding manner along the vertical direction; the uppermost movable plate 94 is connected to one of the filter screens 85 at the upper portion by a plurality of first springs 95, and any adjacent two movable plates 94 are connected by a plurality of second springs 96.
In the technical scheme, the hole cleaning mechanism is arranged in the second drain pipe, and the flowing energy of road surface drainage can be converted into the rotating energy of the cleaning brush, so that the purpose of self-cleaning of the filter screen is achieved, on one hand, the filter screen can be prevented from being blocked, the smoothness of drainage of the second drain pipe is ensured, and the drainage performance of the water purifier is further improved; on the other hand, natural energy is fully utilized, and energy is saved.
In the technical scheme, rainwater on the road surface flows into the second drainage pipe through the filter screen at the top of the second drainage pipe, when the rainwater amount is large, water in the second drainage pipe cannot penetrate through the plurality of fourth drainage holes on the movable plate to be discharged downwards in a short time, so that accumulated water on the upper part of the movable plate generates vertical pressure on the movable plate, the movable plate vertically moves downwards in the second drainage pipe, the sleeve and the rotating shaft are connected through spiral transmission, the sleeve can drive the rotating shaft to rotate around the axis of the sleeve while the movable plate drives the sleeve to vertically move downwards, the two cleaning brushes can be driven to rotate relative to the two filter screens by the rotation of the rotating shaft, the cleaning brushes can scrape the filter screens, further obstacles in the meshes of the filter screens can be removed, the influence of the blockage of the filter screens on the drainage effect is avoided, and when the drainage amount of the road surface is reduced, under the self elastic recovery effort of first spring and second spring, drive the vertical rebound of a plurality of fly leafs, and then drive pivot antiport to it is clean to drive the cleaning brush to scrape once more to the filter screen.
The invention also provides a construction method of the asphalt pavement, which comprises the following steps:
step A, tamping a soil layer, and building a foundation layer on the soil layer; the foundation layer is formed by pouring concrete;
b, reserving drainage ditches communicated with a municipal drainage pipe network at two transverse sides of the foundation layer, covering the top of each drainage ditch with a water-permeable cover plate, arranging a plurality of second drainage pipes at intervals along the longitudinal direction at the top of each drainage ditch, enabling the lower end of any second drainage pipe to penetrate through the water-permeable cover plate to be communicated with the drainage ditch, and enabling the upper end of any second drainage pipe to vertically extend upwards to a position which is flush with or slightly lower than the plane where the preset pavement layer is located;
c, paving an arched transition layer on the top surface of the foundation layer, reserving a plurality of blind holes into which the lower ends of the water storage pipes are inserted at the top of the transition layer, vertically inserting one water storage pipe into any blind hole, communicating the lower part of any water storage pipe with one of the second drain pipes through a water guide pipe, temporarily fixing the inserted water storage pipe by using a temporary fixing mechanism in actual construction, and removing the fixing mechanism after each layer of the pavement is paved; the depth of the blind hole can be controlled to ensure that the lower end of the water storage pipe is inserted into the blind hole and cannot topple; then, paving a waterproof layer on the top surface of the transition layer;
d, laying a glass fiber geogrid layer on the top surface of the waterproof layer, laying a permeable layer with a certain thickness on the top surface of the glass fiber geogrid layer, longitudinally laying a plurality of first drainage pipes at intervals, respectively communicating two ends of any first drainage pipe with corresponding water storage pipes, continuously laying the permeable layer to the height of the geotextile, and laying geotextile on the top surface of the permeable layer; the permeable layer is formed by filling aggregate formed by crushed stone and coarse sand in a weight ratio of 2: 1;
e, paving two cement boards and a metal filter screen on the top surface of the geotextile in sequence;
step F, according to the requirement of the strength grade of the pavement, a plurality of first metal mesh frames are arranged on the top surface of the metal filter screen at intervals along the longitudinal direction, a plurality of second metal mesh frames are arranged between any two adjacent first metal mesh frames at intervals along the transverse direction, any second metal mesh frame is connected with the two adjacent first metal mesh frames, the bottoms of the first metal mesh frames and the bottoms of the second metal mesh frames are connected with the metal filter screen, and broken stones with the grain size of 20-30 mm are filled in any first metal mesh frame and any second metal mesh frame, so that a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms are formed;
step G, binding reinforcing steel bars and pouring concrete in each blank space formed by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms to form each unit block, wherein the top surfaces of the unit blocks are flush with the top surfaces of the first reinforcing mechanisms/the second reinforcing mechanisms; forming a concrete layer after all the unit blocks are manufactured;
and H, paving an asphalt layer on the upper surface of the concrete layer and compacting.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
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 (8)

1. The asphalt pavement is characterized by sequentially comprising a foundation layer, a waterproof layer, a drainage layer, a reinforcing layer and a pavement layer from bottom to top; the pavement layer comprises an asphalt layer and a concrete layer from top to bottom, a plurality of first reinforcing mechanisms are arranged in the concrete layer at intervals along the longitudinal direction, any one first reinforcing mechanism is a strip-shaped structure extending to two sides of the pavement along the transverse direction, any two adjacent first reinforcing mechanisms are connected through a plurality of second reinforcing mechanisms distributed along the transverse direction at intervals, any one second reinforcing mechanism is a strip-shaped structure extending along the longitudinal direction, and the top surface and the bottom surface of any one first reinforcing mechanism and any one second reinforcing mechanism are respectively flush with the top surface and the bottom surface of the concrete layer; the concrete layer is divided into a plurality of unit blocks which are distributed in a matrix manner and are not in contact with each other by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms; any first reinforcing mechanism comprises a strip-shaped first metal mesh frame extending along the transverse direction, any second reinforcing mechanism comprises a strip-shaped second metal mesh frame extending along the longitudinal direction, and broken stones with the particle size of 20-30 mm are filled in any first metal mesh frame and any second metal mesh frame.
2. The asphalt pavement according to claim 1, wherein the reinforcing layer comprises two cement boards stacked in a vertical direction, each cement board is provided with a plurality of first drainage holes penetrating in the vertical direction, two opposite side surfaces of the two cement boards are provided with a plurality of tenons and a plurality of mortises at intervals, wherein any tenon on one cement board can be accommodated in one mortise on the other cement board, and any mortise can be accommodated in one tenon on the other cement board.
3. The asphalt pavement of claim 1 wherein a metal screen is disposed between said reinforcing layer and said pavement layer.
4. The asphalt pavement of claim 1, wherein the longitudinal vertical cross-section of any one of the first wire frames and the transverse vertical cross-section of any one of the second wire frames are cruciform.
5. The asphalt pavement according to claim 1, wherein a transition layer is disposed between the waterproof layer and the foundation layer, the transition layer is formed by paving natural stones in an arch shape with a high middle and low sides along the transverse direction of the pavement, the waterproof layer is uniformly covered on the transition layer, and the waterproof layer is made of waterproof cloth, waterproof glue and rubber asphalt.
6. The asphalt pavement according to claim 5, wherein the drainage layer comprises a glass fiber geogrid layer, a water permeable layer and geotextile from bottom to top; the glass fiber geogrid layer is of an arch structure laid on the top surface of a waterproof layer, the geotextile is horizontally arranged, aggregate formed by broken stones and coarse sand in a weight ratio of 2:1 is filled between the glass fiber geogrid layer and the geotextile to form the permeable layer, a plurality of first drainage pipes are arranged in the permeable layer at intervals along the longitudinal direction, any first drainage pipe is of an arch structure, two ends of the first drainage pipe extend to the two transverse sides of the road surface, a plurality of second drainage holes are arranged on the first drainage pipe at intervals, and a plurality of water guide plates of an arc structure extending obliquely downwards are arranged on the outer wall of the first drainage pipe at intervals.
7. The asphalt pavement according to claim 6, further comprising two drainage mechanisms respectively provided on both lateral sides of the pavement, each drainage mechanism comprising:
the water storage pipes are arranged at intervals along the longitudinal direction, one water storage pipe is correspondingly arranged on one first water drainage pipe, the end part of each first water drainage pipe is communicated with the corresponding water storage pipe, the upper end of any water storage pipe is flush with the bottom of the asphalt layer, the lower end of any water storage pipe vertically extends downwards into the transition layer, a plurality of third water drainage holes are arranged on one side, close to the road surface, of each water storage pipe at intervals, an exhaust pipe communicated with the outside is arranged at the top of each water storage pipe, and a first one-way valve is arranged in each water storage pipe;
a plurality of second drain pipes, it sets up along vertical interval, the top of arbitrary second drain pipe with the top on pitch layer flushes, the vertical downwardly extending in bottom and with the escape canal intercommunication, escape canal and municipal drainage pipe network intercommunication, the equal level inscription in top and the bottom of second drain pipe has the filter screen, and arbitrary retaining pipe passes through the aqueduct intercommunication with one of them second drain pipe, is equipped with the second check valve in arbitrary aqueduct.
8. The method for constructing an asphalt pavement according to any one of claims 1 to 7, comprising the steps of:
step A, tamping a soil layer, and paving a foundation layer on the soil layer;
b, paving a waterproof layer, a drainage layer and a reinforcing layer on the foundation layer in sequence;
step C, according to the requirement of the strength grade of the pavement, longitudinally arranging a plurality of first metal net frames at intervals, transversely arranging a plurality of second metal net frames between any two adjacent first metal net frames at intervals, connecting any second metal net frame with the two adjacent first metal net frames, and filling gravels with the grain size of 20-30 mm into any first metal net frame and any second metal net frame to form a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms;
d, binding reinforcing steel bars and pouring concrete in any empty space formed by the plurality of first reinforcing mechanisms and the plurality of second reinforcing mechanisms to form a unit block, wherein the top surface of the unit block is flush with the top surfaces of the first reinforcing mechanisms/the second reinforcing mechanisms; forming a concrete layer after all the unit blocks are manufactured;
and E, paving an asphalt layer on the upper surface of the concrete layer and compacting.
CN202210325276.1A 2022-03-30 2022-03-30 Asphalt pavement and construction method thereof Active CN114635324B (en)

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