CN114635324B - Asphalt pavement and construction method thereof - Google Patents
Asphalt pavement and construction method thereof Download PDFInfo
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- CN114635324B CN114635324B CN202210325276.1A CN202210325276A CN114635324B CN 114635324 B CN114635324 B CN 114635324B CN 202210325276 A CN202210325276 A CN 202210325276A CN 114635324 B CN114635324 B CN 114635324B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 61
- 238000010276 construction Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 79
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims description 52
- 239000002184 metal Substances 0.000 claims description 41
- 239000004568 cement Substances 0.000 claims description 24
- 239000004575 stone Substances 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 16
- 239000003365 glass fiber Substances 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- 239000004746 geotextile Substances 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 178
- 238000004140 cleaning Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002352 surface water Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
-
- 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
- E01C11/00—Details of pavings
- E01C11/16—Reinforcements
-
- 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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
-
- 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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
-
- 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
Landscapes
- 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, a plurality of first reinforcing mechanisms are longitudinally arranged in the concrete layer at intervals, and any two adjacent first reinforcing mechanisms are connected through a plurality of second reinforcing mechanisms which are transversely distributed at intervals; the concrete layer is divided into a plurality of unit blocks which are distributed in a matrix and are not contacted with each other by a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms. The invention improves the structural strength of the pavement and prolongs the service life of the asphalt pavement while guaranteeing the water repellency and water permeability of the pavement.
Description
Technical Field
The invention relates to the technical field of pavement construction. More particularly, 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, 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 the engineering center is more biased to unilaterally solve the drainage problem in the pavement construction process, the structural strength of the asphalt pavement is ignored, the constructed asphalt pavement has excellent water permeability and drainage performance, but the pavement is extremely 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, there is a problem that a large amount of water permeates into the foundation to wet the foundation, resulting in aging and cracking of the foundation.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
It is still another object of the present invention to provide an asphalt pavement, which improves structural strength of the pavement and prolongs service life of the asphalt pavement while guaranteeing water repellency and water permeability of the pavement.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an asphalt pavement comprising, in order from bottom to top, a foundation layer, a waterproof layer, a drainage layer, a reinforcing layer, and a pavement layer; the pavement layer comprises an asphalt layer and a concrete layer from top to bottom, wherein a plurality of first reinforcing mechanisms are arranged in the concrete layer at intervals along the longitudinal direction, any one of the first reinforcing mechanisms 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 of the second reinforcing mechanisms is a strip-shaped structure extending along the longitudinal direction, and the top surface and the bottom surface of any one of the first reinforcing mechanisms and the top surface and the bottom surface of any one of the second reinforcing mechanisms 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 and are not contacted with each other by the first reinforcing mechanisms and the second reinforcing mechanisms; any first reinforcing mechanism comprises a strip-shaped first metal net frame extending transversely, any second reinforcing mechanism comprises a strip-shaped second metal net frame extending longitudinally, and broken stone with the particle size of 20-30 mm is filled in any first metal net frame and any second metal net frame.
Preferably, the asphalt pavement, the reinforcing layer comprises two cement boards stacked along a vertical direction, a plurality of first drain holes penetrating along the vertical direction are formed in any one cement board, a plurality of tenons and a plurality of mortises are formed on two opposite side surfaces of the two cement boards at intervals, any tenon on one cement board can be contained in one mortice on the other cement board, and any mortice can contain one tenon on the other cement board.
Preferably, a metal filter screen is paved between the reinforcing layer and the pavement layer of the asphalt pavement.
Preferably, 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 cross-shaped.
Preferably, the asphalt pavement, a transition layer is arranged 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 two low sides along the pavement, the waterproof layer is uniformly covered on the transition layer, and the waterproof layer is manufactured by waterproof cloth, waterproof glue and rubber asphalt.
Preferably, the drainage layer comprises a glass fiber geogrid layer, a permeable layer and geotextile from bottom to top; the glass fiber geogrid layer is an arch structure laid on the top surface of the waterproof layer, the geotechnical cloth is horizontally arranged, the glass fiber geogrid layer is filled with aggregate formed by broken stone and coarse sand with the weight ratio of 2:1 between the geotechnical cloth to form the permeable layer, a plurality of first drainage pipes are arranged in the permeable layer at intervals in the longitudinal direction, any one of the first drainage pipes is an arch structure, two ends of the first drainage pipes extend to two transverse sides of a road surface, a plurality of second drainage holes are formed in the first drainage pipes at intervals, and a plurality of arc-shaped water guide plates extending downwards are arranged on the outer wall of the first drainage pipes at intervals.
Preferably, the asphalt pavement further comprises two drainage mechanisms, which are respectively arranged at two lateral sides of the pavement, and any drainage mechanism comprises:
The water storage pipes are longitudinally arranged at intervals, one first water drainage pipe is correspondingly provided with one water storage pipe, the end part of the 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, one side of the water storage pipe, which is close to a road surface, is provided with a plurality of third water drainage holes at intervals, the top of the water storage pipe is provided with an exhaust pipe communicated with the outside, and a first one-way valve is arranged in the exhaust pipe;
the first drainage pipes are arranged at intervals longitudinally, the top of each first drainage pipe is flush with the top of the asphalt layer, the bottom of each first drainage pipe extends vertically downwards and is communicated with a drainage ditch, the drainage ditches are communicated with municipal drainage pipe networks, the top and the bottom of each first drainage pipe are horizontally connected with a filter screen in a inscription mode, any water storage pipe is communicated with one of the first drainage pipes through a water guide pipe, and a first check valve is arranged in any water guide pipe.
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;
step B, a waterproof layer, a drainage layer and a reinforcing layer are sequentially paved on the foundation layer;
Step C, arranging a plurality of first metal net frames at intervals along the longitudinal direction according to the strength grade requirement of the pavement, arranging a plurality of second metal net frames between any two adjacent first metal net frames at intervals along the transverse direction, connecting any second metal net frame with the two adjacent first metal net frames, and filling broken stone with the grain size of 20-30 mm into any first metal net frame and any second metal net frame so as to form a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms;
step D, binding reinforcing steel bars in any blank space in each blank space surrounded by the first reinforcing mechanisms and the second reinforcing mechanisms, pouring concrete to form unit blocks, and enabling the top surfaces of the unit blocks to be 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 the foundation layer, the waterproof layer, the drainage layer, the reinforcing layer and the pavement layer from bottom to top, the waterproof layer can prevent water flow from penetrating into the foundation layer structure downwards, 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 foam corrosion of the foundation layer is avoided, and the stability and durability of the foundation layer structure are improved; the reinforced layer is arranged between the drainage layer and the pavement layer, so that the structural strength of the middle part of the pavement can be improved while the drainage performance of the middle part of the pavement is ensured, the pavement layer is designed into a two-layer structure of an anti-skid elastic asphalt layer and a concrete layer with high structural strength, the drainage performance of the upper part of the pavement is ensured, the structural strength of the upper part of the pavement is improved, the overall drainage performance of the asphalt pavement is improved, the overall structural strength of the pavement is improved, and the service life of the asphalt pavement is prolonged;
2. According to the invention, the concrete layer is divided into the unit blocks of a plurality of field 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 existence of the reinforcing mechanism reserves a telescopic space for the unit blocks made of concrete materials, and the problem of surface layer cracking caused by thermal expansion and cold contraction of the concrete layer is avoided, and specifically, the method comprises the following steps: when the unit blocks of the concrete layer shrink under the cold condition, the asphalt layer has certain elasticity, gaps between the unit blocks and the reinforcing mechanism can be timely made up after the unit blocks shrink, the structural strength of the pavement is guaranteed, when the unit blocks of the concrete layer expand under the heating condition, the reinforcing mechanism has certain extrusion property, the elastic property of the asphalt layer is matched, an expansion space is timely provided for the unit blocks, and the phenomenon that the pavement is bulged and cracked due to the 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 reserves a telescopic space for the concrete unit block and has higher structural strength, so that the structural strength of the pavement can be improved;
3. According to the utility model, the plurality of first drain pipes are arranged in the permeable layer between the glass fiber geogrid layer and the geotextile to jointly form the drainage layer with excellent drainage, so that water is quickly and timely drained into the drainage official nets at two sides of the pavement, the glass fiber geogrid layer and the geotextile can stabilize filling aggregate, deformation and displacement of the filling aggregate under the impact of flowing water are avoided, and the glass fiber geogrid layer and the geotextile can ensure the structural stability of the drainage layer; the arched first drain pipe forms a downward water flow path inclined towards the direction close to two sides of the road surface, water can be quickly and timely guided to the drainage treatment system at two sides of the road surface, the drainage effect of the utility model is improved, a plurality of second drain holes and water guide plates are arranged on the first drain pipe at intervals, preferably, the outer edge of each second drain hole is provided with a water guide plate with an arc structure, road surface water downwards flows into the drain layer through the road surface layer and the reinforcing layer, enters the first drain pipe through the plurality of second drain holes at the upper part of the first drain pipe, is downwards discharged to the two sides of the road surface in an inclined way along the first drain pipe, and can prevent broken stone and coarse sand from entering while guaranteeing that water can pass through the second drain holes, prevent the broken stone and coarse sand from blocking the second drain holes, enable the water guide plates to downwards flow under the action of the plurality of water guide plates at the lower part of the first drain pipe, enable the water guide plates to downwards flow to well guide the two sides of the road surface, and prevent the broken stone and coarse sand from being washed away along with the outer wall of the drain pipe, and the coarse sand from being increased. The drainage layer provided by the utility model has excellent drainage performance and higher structural stability, and achieves the effect of improving the pavement structural strength while improving the pavement drainage performance.
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 section of an asphalt pavement according to another embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1A;
fig. 4 is a schematic structural view of a first drain pipe according to another embodiment of the present invention;
Fig. 5 is a top view of a concrete layer in another embodiment of the invention.
Reference numerals illustrate: 1-a foundation layer; 2-a waterproof layer; 3-a drainage layer; 4-a reinforcing layer; 5-a road surface layer; 51-bitumen layer; 52-concrete layer; 53-a first stiffening means; 54-a second reinforcement mechanism; 6-a 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; 341-a second drain hole; 342-a water guide plate; 81-a water storage pipe; 82-exhaust pipe; 83-a second drain; 84-drainage ditch; 85-filtering net; 86-water guide pipe; 91-rotating shaft; 92-cleaning brush; 93-sleeve; 94-a movable plate; 95-a first spring; 96-second spring.
Detailed Description
The present invention is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the invention by referring 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.
The experimental methods described in the following embodiments are conventional methods unless otherwise indicated, and the reagents and materials are commercially available.
In the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "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 merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 1 to 5, the present invention provides an asphalt pavement, which comprises a foundation layer, a waterproof layer 2, a drainage layer, a reinforcing layer 4 and a pavement layer from bottom to top in sequence; 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 52 at intervals along the longitudinal direction, any one 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 at intervals along the transverse direction, any one second reinforcing mechanism 54 is a strip-shaped structure extending along the longitudinal direction, and the top surface and the bottom surface of any one first reinforcing mechanism 53 and any one second reinforcing mechanism 54 are respectively flush with the top surface and the bottom surface of the concrete layer; the first reinforcing mechanisms 53 and the second reinforcing mechanisms 54 divide the concrete layer into a plurality of unit blocks which are distributed in a matrix and are not contacted with each other; any first reinforcing mechanism comprises a strip-shaped first metal net frame extending transversely, any second reinforcing mechanism comprises a strip-shaped second metal net frame extending longitudinally, and broken stone with the particle size of 20-30 mm is filled in any first metal net frame and any second metal net frame.
In the technical scheme, the asphalt pavement comprises the foundation layer, the waterproof layer, the drainage layer, the reinforcing layer and the pavement layer from bottom to top, the waterproof layer can prevent water flow from penetrating into the foundation layer structure downwards, 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 foam corrosion of the foundation layer is avoided, and the stability and durability of the foundation layer structure are improved; set up the enhancement layer between drainage layer and pavement layer, when can guaranteeing the drainage performance at road surface middle part, improve the structural strength at road surface middle part, pavement layer design is the two-layer structure of antiskid elastic asphalt layer and the great concrete layer of structural strength, when guaranteeing the drainage performance at road surface upper portion, improves the structural strength at road surface upper portion, when finally having realized that the holistic drainage performance of asphalt pavement promotes, still can improve the holistic structural strength of road surface, and then reaches the effect of extension asphalt pavement life.
In the technical scheme, the concrete layer is divided into the unit blocks of the plurality of field 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 concrete materials in the reinforcing mechanism, and the problem of surface layer cracking caused by thermal expansion and cold contraction of the concrete layer is avoided, and the concrete structure comprises the following concrete components: when the unit blocks of the concrete layer shrink under the cold condition, the asphalt layer has certain elasticity, gaps between the unit blocks and the reinforcing mechanism can be timely made up after the unit blocks shrink, the structural strength of the pavement is guaranteed, when the unit blocks of the concrete layer expand under the heating condition, the reinforcing mechanism has certain extrusion property, the elastic property of the asphalt layer is matched, an expansion space is timely provided for the unit blocks, and the phenomenon that the pavement is bulged and cracked due to the 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 reserves a telescopic space for the concrete unit block, has higher structural strength, can improve the structural strength of the pavement, and importantly, has better water permeability and water seepage performance.
In fig. 1, the direction parallel to the screen is a transverse direction, and the direction perpendicular to the screen is a longitudinal direction; the direction parallel to the screen in fig. 2 is longitudinal, and the direction perpendicular to the screen is transverse; in fig. 5, the direction parallel to the screen is the longitudinal direction, and the direction perpendicular to the screen is the transverse direction.
In another technical scheme, the reinforcing layer 4 comprises two cement boards 41 stacked along the vertical direction, a plurality of first drainage holes 42 penetrating along the vertical direction are formed in any one cement board 41, a plurality of tenons 43 and a plurality of mortises 44 are formed in two opposite side surfaces of the two cement boards 41 at intervals, any tenon 43 on one cement board 41 can be contained in one mortice 44 on the other cement board, and any mortice 44 can contain one tenon 43 on the other cement board.
In the technical scheme, the two layers of stacked cement boards are adopted as the reinforcing layers, so that the mechanical strength of the pavement is further improved, the first water drain holes formed in the cement boards can convey water downwards, the water permeability and the water drain property of the pavement are guaranteed, the two cement boards are directly engaged with each other through the mortises and tenons, the connection firmness between the two cement boards is improved, and in practical application, an 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 paved between the reinforcing layer 4 and the pavement layer. The metal filter screen 6 is arranged to filter impurities in water flow, so that the first drain hole is prevented from being blocked by the impurities, and the water permeability and drainage performance of the pavement are further improved.
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 cross-shaped. The vertical cross sections of any first metal net frame and any second metal net frame are arranged in a cross shape, so that the two sides of the first metal net frame and the second metal net frame can form strip-shaped protruding blocks horizontally extending into the unit blocks of the concrete layer, and the connection stability between the reinforcing mechanism and the unit blocks is improved.
In another technical scheme, bituminous pavement, waterproof layer 2 with be provided with transition layer 7 between the basic unit, the transition layer is that natural stone is transversely to be the arch of middle high both sides low along the road surface and lays and form, waterproof layer 2 thickness even cover is located on the transition layer 7, waterproof layer 2 is through waterproof cloth, waterproof glue and rubber asphalt co-manufacture. 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 waterproof cloth, waterproof glue and rubber asphalt to make the waterproof layer jointly, guarantee the waterproof effect 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 comprises a glass fiber geogrid layer, a permeable layer and geotextile from bottom to top in sequence; the glass fiber geogrid layer is an arch structure laid on the top surface of the waterproof layer, the geotechnical cloth is horizontally arranged, aggregate formed by broken stone and coarse sand with the weight ratio of 2:1 is filled between the glass fiber geogrid layer and the geotechnical cloth to form the permeable layer, a plurality of first drain pipes 34 are longitudinally arranged in the permeable layer at intervals, any one of the first drain pipes 34 is of an arch structure, two ends of the first drain pipe 34 extend to two lateral sides of a road surface, a plurality of second drain holes 341 are formed in the first drain pipe at intervals, and a plurality of water guide plates 342 of the arch structure extending downwards are arranged on the outer wall of the first drain pipe 34 at intervals.
In the technical scheme, the plurality of first drain pipes are arranged in the permeable layer between the glass fiber geogrid layer and the geotechnical cloth to jointly form the drain layer with excellent drainage, so that water is quickly and timely drained into the drain functional nets on two sides of the pavement, the glass fiber geogrid layer and the geotechnical cloth can stabilize filling aggregate, deformation and displacement of the filling aggregate under the impact of running water are avoided, and the glass fiber geogrid layer and the geotechnical cloth can ensure the structural stability of the drain layer; the arched first drain pipe forms a downward water flow path inclined towards the direction close to two sides of the road surface, water can be quickly and timely guided to the drainage treatment system at two sides of the road surface, the drainage effect of the utility model is improved, a plurality of second drain holes and water guide plates are arranged on the first drain pipe at intervals, preferably, the outer edge of each second drain hole is provided with a water guide plate with an arc structure, road surface water downwards flows into the drain layer through the road surface layer and the reinforcing layer, enters the first drain pipe through the plurality of second drain holes at the upper part of the first drain pipe, is downwards discharged to the two sides of the road surface in an inclined way along the first drain pipe, and can prevent broken stone and coarse sand from entering while guaranteeing that water can pass through the second drain holes, prevent the broken stone and coarse sand from blocking the second drain holes, enable the water guide plates to downwards flow under the action of the plurality of water guide plates at the lower part of the first drain pipe, enable the water guide plates to downwards flow to well guide the two sides of the road surface, and prevent the broken stone and coarse sand from being washed away along with the outer wall of the drain pipe, and the coarse sand from being increased. The drainage layer provided by the utility model has excellent drainage performance and higher structural stability, and achieves the effect of improving the pavement structural strength while improving the pavement drainage performance.
In another technical scheme, bituminous pavement, still include two drainage mechanism, it locates the horizontal both sides on road surface respectively, arbitrary drainage mechanism includes:
The plurality of water storage pipes 81 are longitudinally arranged at intervals, one first water discharge pipe 34 is correspondingly provided with one water storage pipe 81, the end part of the first water discharge 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 any water storage pipe extends vertically downwards into the transition layer, one side of the water storage pipe, which is close to the road surface, is provided with a plurality of third water discharge holes at intervals, the top of the water storage pipe 81 is provided with an exhaust pipe 82 communicated with the outside, and a first one-way valve is arranged in the exhaust pipe;
The top of any second drain pipe 83 flush with the top of the asphalt layer, the bottom of the second drain pipe 83 extends vertically downwards and is communicated with a drain 84, the drain is communicated with a municipal drain pipe network, the top and the bottom of the second drain pipe 83 are horizontally inscribed with a filter screen 85, any water storage pipe 81 is communicated with one second drain pipe 83 through a water guide pipe 86, and a second one-way valve is arranged in any water guide pipe 86.
In the technical scheme, the two drainage mechanisms with self-priming drainage performance are respectively arranged on the two lateral sides of the pavement, and water on the pavement layer can be quickly and timely drained into the municipal drainage pipe network through the two drainage mechanisms on the two lateral sides of the pavement, so that the drainage performance of the self-priming drainage pipe network on the two lateral sides of the pavement is improved.
In the above technical scheme, the first check valve, the second check valve set up as: the first one-way valve allows the gas in the water storage pipe to be discharged upwards through the exhaust pipe, and does not allow the external gas to enter the water storage pipe through the exhaust pipe; when the water quantity 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, the water in the water storage pipe is allowed to be discharged into the second drain 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 water storage pipe is discharged into the second water discharge pipe through the water guide pipe, the water in the water storage pipe is gradually reduced, 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, at the moment, a certain vacuum degree exists in the water storage pipe, a pressure difference exists between the water storage pipe and the road surface, the water in the water storage pipe can be automatically and quickly discharged into the water storage pipe, the water discharge efficiency is improved, when the water in the water storage pipe reaches the first preset value again, the second one-way valve is opened again, and the accumulated water in the water storage pipe can be quickly discharged into the second water discharge pipe;
The second one-way valve is opened and automatically closed in a circulating way, and the water storage pipe is drained like a step-opening water draining mode, so that the water draining efficiency is greatly improved, and the water on the road surface layer can be drained to municipal water draining pipe networks on two sides of a road surface more quickly and timely.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: asphalt pavement, be equipped with clear hole mechanism in arbitrary second drain pipe, arbitrary clear hole mechanism includes:
A rotating shaft 91 coaxially disposed in the second drain pipe 83, wherein both ends of the rotating shaft 91 are respectively rotatably connected with the two filter screens 85;
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 extends along the radial direction of the second drain pipe 83, and bristles of the cleaning brush 92 are contacted with the upper surface of the filter screen 85;
A plurality of sleeves 93 which are arranged in the second drain pipe 83 at intervals along the vertical direction, wherein any sleeve 93 is coaxially sleeved outside the rotating shaft 91 and is in spiral rotation connection with the rotating shaft 91;
The movable plates 94, one sleeve 93 is correspondingly provided with one movable plate 94, any movable plate 94 is of a horizontal circular ring structure sleeved on the sleeve 93, a plurality of fourth water discharge holes (penetrating along the vertical direction) are formed in the movable plate 94 at intervals, and two sides of the movable plate 94 are respectively connected with the inner wall of the second water discharge pipe 83 in a sliding manner along the vertical direction; the movable plate 94 located at the uppermost portion is connected to one filter screen 85 located 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, so that the flowing energy of the road surface drain water can be converted into the rotating energy of the cleaning brush, and the aim of self-cleaning the filter screen is achieved, on one hand, the blocking of the filter screen can be avoided, the smoothness of the drain water of the second drain pipe is ensured, and the drainage performance of the self-cleaning filter is further improved; on the other hand, the natural energy is fully utilized, the energy is saved, and the environment-friendly national call is responded.
Among the above-mentioned technical scheme, rainwater on the road surface flows to the second drain pipe through second drain pipe top filter screen, when under the great circumstances of rainwater volume, and then the water in the second drain pipe is come not just to pass a plurality of fourth wash ports on the fly leaf in the short time and discharge downwards, and then make the ponding on fly leaf upper portion produce vertical pressure to the fly leaf, the fly leaf is vertical down to remove in the second drain pipe, because of being connected through helical gearing between the sleeve at fly leaf middle part and the pivot, the sleeve can drive the pivot and rotate around self axis when the fly leaf drives the vertical down of sleeve, the rotation of pivot can drive two relative two filter screens of cleaning brush and rotate, the cleaning brush can scratch the filter screen, and then can clear away the barrier in the mesh of filter screen, avoid the filter screen to block up the drainage effect, when the road surface water volume reduces, under the self elasticity recovery effort of first spring and second spring, drive a plurality of fly leaf and then drive the pivot and reverse rotation, thereby drive the cleaning brush and scratch the filter screen again.
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 concrete pouring;
B, reserving drainage ditches which are communicated with municipal drainage pipe networks on two lateral sides of the foundation layer, covering a permeable cover plate on the top of the drainage ditches, longitudinally and alternately arranging a plurality of second drainage pipes on the top of the drainage ditches, enabling the lower end of any second drainage pipe to penetrate through the permeable cover plate and be communicated with the drainage ditches, and enabling the upper end of any second drainage pipe to vertically extend upwards to a position flush with or slightly lower than a plane where a preset pavement layer is located;
Step C, paving an arched transition layer on the top surface of the foundation layer, reserving blind holes for inserting the lower ends of a plurality of water storage pipes at the top of the transition layer, vertically inserting one water storage pipe in 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 adopting a temporary fixing mechanism in actual construction, and dismantling the fixing mechanism after pavement layers are 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 does not topple; then a waterproof layer is paved on the top surface of the transition layer;
Step D, paving a glass fiber geogrid layer on the top surface of the waterproof layer, paving a permeable layer with a certain thickness on the top surface of the glass fiber geogrid layer, longitudinally and alternately arranging a plurality of first drain pipes, respectively communicating two ends of any one of the first drain pipes with corresponding water storage pipes, continuously paving the permeable layer until the geotechnical cloth is arranged at the height, and paving geotechnical cloth on the top surface of the permeable layer; the permeable layer is formed by filling aggregate formed by broken stone and coarse sand in a weight ratio of 2:1;
Step E, sequentially paving two cement boards and a metal filter screen on the top surface of the geotechnical cloth;
Step F, arranging a plurality of first metal net frames on the top surface of a metal filter screen at intervals in the longitudinal direction according to the strength grade requirement of the pavement, arranging a plurality of second metal net frames between any two adjacent first metal net frames at intervals in the transverse direction, connecting any one second metal net frame with the two adjacent first metal net frames, connecting the bottoms of the first metal net frames and the second metal net frames with the metal filter screen, and filling crushed stone with the particle size of 20-30 mm into any one first metal net frame and any one second metal net frame so as to form a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms;
Step G, binding steel bars in each blank surrounded by the first reinforcing mechanisms and the second reinforcing mechanisms, pouring concrete and further forming 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 step H, paving an asphalt layer on the upper surface of the concrete layer and compacting.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (5)
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, wherein a plurality of first reinforcing mechanisms are arranged in the concrete layer at intervals along the longitudinal direction, any one of the first reinforcing mechanisms 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 of the second reinforcing mechanisms is a strip-shaped structure extending along the longitudinal direction, and the top surface and the bottom surface of any one of the first reinforcing mechanisms and the top surface and the bottom surface of any one of the second reinforcing mechanisms 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 and are not contacted with each other by the first reinforcing mechanisms and the second reinforcing mechanisms; any first reinforcement mechanism comprises a strip-shaped first metal net frame extending along the transverse direction, any second reinforcement mechanism comprises a strip-shaped second metal net frame extending along the longitudinal direction, and broken stone with the grain diameter of 20-30 mm is filled in any first metal net frame and any second metal net frame;
a transition layer is arranged between the waterproof layer and the ground layer, the transition layer is formed by paving natural stones in an arch shape with a high middle and two low sides along the transverse direction of the pavement, the waterproof layer is uniformly covered on the transition layer, and the waterproof layer is manufactured by waterproof cloth, waterproof glue and rubber asphalt;
The drainage layer sequentially comprises a glass fiber geogrid layer, a permeable layer and geotextile from bottom to top; the glass fiber geogrid layer is an arch structure laid on the top surface of the waterproof layer, the geotextile is horizontally arranged, aggregate formed by broken stone and coarse sand with the 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 drain pipes are longitudinally arranged in the permeable layer at intervals, any one of the first drain pipes is of an arch structure, two ends of the first drain pipe extend to two transverse sides of a pavement, a plurality of second drain holes are arranged on the first drain pipe at intervals, and a plurality of water guide plates of the arch structure extending downwards obliquely are arranged on the outer wall of the first drain pipe at intervals;
The bituminous pavement further comprises two drainage mechanisms which are respectively arranged on two lateral sides of the pavement, and any drainage mechanism comprises:
The water storage pipes are longitudinally arranged at intervals, one first water drainage pipe is correspondingly provided with one water storage pipe, the end part of the 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, one side of the water storage pipe, which is close to a road surface, is provided with a plurality of third water drainage holes at intervals, the top of the water storage pipe is provided with an exhaust pipe communicated with the outside, and a first one-way valve is arranged in the exhaust pipe;
the first drainage pipes are arranged at intervals in the longitudinal direction, the top of each first drainage pipe is flush with the top of the asphalt layer, the bottom of each first drainage pipe extends vertically downwards and is communicated with a drainage ditch, the drainage ditches are communicated with municipal drainage pipe networks, the top and the bottom of each first drainage pipe are horizontally connected with filter screens in an inscription manner, each water storage pipe is communicated with one first drainage pipe through a water guide pipe, and a first one-way valve is arranged in each water guide pipe;
the first check valve and the second check valve are arranged as follows: the first one-way valve allows the gas in the water storage pipe to be discharged upwards through the exhaust pipe, and does not allow the external gas to enter the water storage pipe through the exhaust pipe; when the water quantity 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, the water in the water storage pipe is allowed to be discharged into the second drain 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.
2. The asphalt pavement of claim 1, wherein the reinforcing layer comprises two vertically stacked cement boards, wherein a plurality of first drainage holes are formed in any one cement board, a plurality of tenons and a plurality of mortises are formed in two opposite sides of the two cement boards at intervals, any tenon on one cement board can be accommodated in one mortice on the other cement board, and any mortice can accommodate 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 metal frames and the transverse vertical cross section of any one of the second metal frames are cross-shaped.
5. The construction method of an asphalt pavement according to any one of claims 1 to 4, comprising the steps of:
Step A, tamping a soil layer, and paving a foundation layer on the soil layer;
step B, a waterproof layer, a drainage layer and a reinforcing layer are sequentially paved on the foundation layer;
Step C, arranging a plurality of first metal net frames at intervals along the longitudinal direction according to the strength grade requirement of the pavement, arranging a plurality of second metal net frames between any two adjacent first metal net frames at intervals along the transverse direction, connecting any second metal net frame with the two adjacent first metal net frames, and filling broken stone with the grain size of 20-30 mm into any first metal net frame and any second metal net frame so as to form a plurality of first reinforcing mechanisms and a plurality of second reinforcing mechanisms;
step D, binding reinforcing steel bars in any blank space in each blank space surrounded by the first reinforcing mechanisms and the second reinforcing mechanisms, pouring concrete to form unit blocks, and enabling the top surfaces of the unit blocks to be 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.
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