CN111648191A - Pavement structure - Google Patents
Pavement structure Download PDFInfo
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- CN111648191A CN111648191A CN202010570102.2A CN202010570102A CN111648191A CN 111648191 A CN111648191 A CN 111648191A CN 202010570102 A CN202010570102 A CN 202010570102A CN 111648191 A CN111648191 A CN 111648191A
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- honeycomb
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- pavement structure
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Images
Classifications
-
- 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
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
-
- 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
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
-
- 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
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a pavement structure, comprising: one or more layers of honeycomb structures, wherein the honeycomb structures are honeycomb structures, and the axial directions of honeycomb holes are vertical to the ground direction; in the multilayer honeycomb structure body, the honeycomb pore density of each layer of honeycomb structure body is the same or different; and a protective member provided above the honeycomb structure. The invention can effectively and evenly disperse the concentrated load of a single tire of a vehicle which repeatedly passes on the road surface and is up to about 8 tons to the road surface below the invention. The invention can be applied to frozen soil pavements. Under the condition of a frozen soil road surface, even if large-area melting or hollow phenomenon occurs to frozen soil, the maximum contact pressure between the frozen soil and a frozen soil base layer is still less than 1.4 tons per square meter; under the uniform load state, even if the melted frozen earth is soft, the frozen earth still can be in an elastic deformation state, so that the whole collapse of the road surface using the invention can not occur, and when the vehicle tire load leaves, the micro deformation of the road surface can be completely recovered. The invention can also be used for temporary or permanent roads under marsh and soft conditions.
Description
Technical Field
The present invention relates to a pavement structure.
Background
Vehicles can be difficult to drive on poor road conditions, such as soft and saggy roads. For example, seasonal frozen soil exists on roads in parts of China. Under such a road condition, frozen soil at a low temperature in winter can expand, frozen soil at a high temperature in summer can melt and contract to form a local cavity, soil becomes muddy, a foundation easily sinks, and is sunk and easy to subside. In order to prevent the melting of the frozen soil roadbed in summer, the temperature of partial sections is adjusted by using phase change materials in the roadbed in different seasons, namely, hot bars are used. Although the hot bar is a natural refrigerator and does not need power, the manufacturing cost of the hot bar of the whole road is high. Meanwhile, if the temperature in summer and winter changes dramatically, liquid ammonia inside the hot rod may be completely gasified, and the inside of the foundation may melt very likely in this time, so that the road condition that vehicles cannot pass is caused.
Disclosure of Invention
The present invention provides a pavement structure for solving the above-mentioned technical problems.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a pavement structure comprising:
one or more layers of honeycomb structures, wherein the honeycomb structures are honeycomb structures, and the axial directions of honeycomb holes are vertical to the ground direction; in the multilayer honeycomb structure body, the honeycomb pore density of each layer of honeycomb structure body is the same or different;
and a protective member provided above the honeycomb structure.
According to one embodiment of the present invention, the multilayer honeycomb structure comprises: first high density honeycomb layer, medium density honeycomb layer and second high density honeycomb layer, first high density honeycomb layer, medium density honeycomb layer and second high density honeycomb layer set up from last to down in order, and the honeycomb hole density of first high density honeycomb layer and second high density honeycomb layer is the same or inequality, and the honeycomb hole density of first high density honeycomb layer and second high density honeycomb layer all is greater than the honeycomb hole density of medium density honeycomb layer. The medium density means that the density of honeycomb holes is 50kg/m3～150kg/m3High density means that the density of honeycomb holes is more than 150kg/m3。
According to an embodiment of the present invention, the first high-density honeycomb layer, the second high-density honeycomb layer and/or the medium-density honeycomb layer include a plurality of honeycomb sub-units, that is, the first high-density honeycomb layer includes a plurality of first honeycomb sub-units, the second high-density honeycomb layer includes a plurality of second honeycomb sub-units, the medium-density honeycomb layer includes a plurality of third honeycomb sub-units, the first honeycomb sub-units, the second honeycomb sub-units and the third honeycomb sub-units are combined with each other in an axial direction of the honeycomb holes to form honeycomb connecting units, and the plurality of honeycomb connecting units are connected with each other.
According to one embodiment of the invention, the honeycomb structure further comprises a first tensile layer, wherein the first honeycomb subunit, the third honeycomb subunit and the second honeycomb subunit are sequentially arranged from top to bottom along the axial direction of the honeycomb hole, and the first tensile layer is respectively arranged between the first honeycomb subunit and the third honeycomb subunit, between the third honeycomb subunit and the second honeycomb subunit, on the upper surface of the first honeycomb subunit and on the lower surface of the second honeycomb subunit.
According to an embodiment of the present invention, a first tensile layer is provided above and/or below a honeycomb structure; a first tensile layer is disposed between the multi-layered honeycomb structure.
According to one embodiment of the invention, the device further comprises a connecting mechanism, and the two honeycomb connecting units are connected through the connecting mechanism.
According to an embodiment of the present invention, the connection mechanism includes an edge banding section bar, the edge banding section bar is disposed at an end of the honeycomb connection unit, the edge banding section bar includes a first edge banding section bar and a second edge banding section bar that are mutually connected in a matching manner, and the first edge banding section bar and the second edge banding section bar are respectively connected to different honeycomb subunits.
According to an embodiment of the present invention, the first edge banding section bar and the second edge banding section bar are coupled with each other in a fitting manner, and the coupling manner includes bonding or locking.
According to one embodiment of the invention, the honeycomb connection block is further included, the edge sealing section bar is arranged at the end part of the third honeycomb subunit, the first tensile layer extends to the surface of the edge sealing section bar, and the honeycomb connection block is arranged on the first tensile layer of the two edge sealing section bars which are connected with each other.
According to one embodiment of the invention, the honeycomb connecting block is a honeycomb structure, and the axial direction of the honeycomb holes of the honeycomb connecting block is consistent with the axial direction of the honeycomb holes of the honeycomb subunits.
According to one embodiment of the invention, the upper surface and/or the lower surface of the honeycomb connecting block is provided with a second tensile layer.
According to one embodiment of the invention, a connecting piece is arranged in the honeycomb connecting block, and the connecting piece is used for connecting two honeycomb connecting blocks.
According to an embodiment of the present invention, the material of the first tensile layer and/or the second tensile layer is fiber reinforced resin.
According to one embodiment of the invention, the honeycomb of the honeycomb subunit and/or the honeycomb connecting block is filled with a foam material.
According to one embodiment of the invention, the honeycomb cell shape in the honeycomb structure includes any geometric shape.
According to one embodiment of the invention, the honeycomb structure further comprises a geotextile sand-coated layer and/or a sand layer, wherein the geotextile sand-coated layer is arranged below the honeycomb structure, or the geotextile sand-coated layer and the sand layer are arranged below the honeycomb structure, and the sand layer is arranged below the geotextile sand-coated layer.
According to an embodiment of the present invention, the honeycomb structural body further comprises a filling layer and/or a riprap layer, wherein the filling layer is arranged below the honeycomb structural body or below the geotextile sand-coated layer, and the riprap layer is arranged below the filling layer.
According to one embodiment of the present invention, an elevated structure is disposed below the honeycomb structure, and the elevated structure includes pillars.
According to one embodiment of the invention, the pavement structure is a pavement structure for a road under soft conditions, including frozen earth or swamp.
The honeycomb structure can be used for dispersing automobile tire load, and the automobile tire load is dispersed to the whole honeycomb structure from one point of the honeycomb structure. In the multilayer honeycomb structure, the first high-density honeycomb layer directly bears the load of an automobile, a forklift or other heavy wheeled equipment, and the second high-density honeycomb layer contacts the load of a road such as a stone below, so that the density and the strength of the honeycomb layers are set to be larger, and the honeycomb structure can bear a certain load; the load is already dispersed when reaching the middle medium-density honeycomb layer, so the medium-density honeycomb layer is arranged to be smaller from the perspective of saving cost; the first tensile layer and the second tensile layer are used for being connected under stress.
The invention can effectively and evenly disperse the concentrated load of a single tire of a vehicle which repeatedly passes on the road surface and is up to about 8 tons to the road surface below the invention. The invention can be applied to frozen soil pavements. Under the condition of a frozen soil road surface, even if large-area melting or hollow phenomenon occurs to frozen soil, the maximum contact pressure between the frozen soil and a frozen soil base layer is still less than 1.4 tons per square meter; under the uniform load state, even if the melted frozen earth is soft, the frozen earth still can be in an elastic deformation state, so that the whole collapse of the road surface using the invention can not occur, and when the vehicle tire load leaves, the micro deformation of the road surface can be completely recovered. The honeycomb of honeycomb subelement and/or honeycomb connecting block packs foam material, increases the thermal insulation performance of honeycomb material, more does benefit to under the frozen soil road surface condition, prevents that the summer of frozen soil from melting the phenomenon. The invention can also be used for swamps or soft road sections, urban municipal roads and highways.
Drawings
Fig. 1 is a schematic structural view of a honeycomb structure, a protective body, a first tensile layer, and a second tensile layer;
FIG. 2 is a schematic radial cross-section of a honeycomb cell;
FIG. 3 is a schematic radial cross-sectional view of a trapezoidal composite honeycomb cell;
FIG. 4 is a schematic axial view of a honeycomb cell of the honeycomb structure;
FIG. 5 is a schematic diagram of a cellular connection unit;
FIG. 6 is a schematic illustration of using gap filling;
FIG. 7 is a schematic view of sand-coated geotextile used in example 1;
FIG. 8 is a schematic view of sand and sand packed with geotextile in example 1;
FIG. 9 is a schematic view of the use of a fill layer in example 2;
FIG. 10 is a schematic view of sand and fill packed with geotextile in example 2;
fig. 11 is a schematic view of sand, a soil filling layer and a riprap layer coated with geotextile in example 2;
FIG. 12 is a schematic view showing the use of a bedding layer and a riprap layer in example 2;
FIG. 13 is a schematic view of example 3;
FIG. 14 is a schematic structural view of example 4;
FIG. 15 is a schematic structural view of example 5.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 1, the road surface structure of the present embodiment includes: one or more layers of honeycomb structures; and a protector 12, wherein the protector 12 protects the honeycomb structure, and the protector 12 is provided above the honeycomb structure. The honeycomb structure body is a honeycomb structure, wherein the shape of honeycomb holes can be set according to actual conditions and requirements, and the honeycomb structure body is in any geometric shape, including a hexagon or a hexagon formed by combining other shapes. As shown in fig. 2, an example of a hexagonal honeycomb cell. As shown in fig. 3, the hexagonal honeycomb holes are an example of a combination of two trapezoids, which are relatively inexpensive to manufacture. As shown in fig. 4, the axial direction H of the honeycomb holes is arranged perpendicular to the ground direction; in the multilayer honeycomb structure, the cell densities of the honeycomb structures are the same or different. In this embodiment, the material of the protector 12 is asphalt. A first tensile layer 4 is arranged above and/or below the honeycomb structure; the first tensile layer 4 is provided between the multilayered honeycomb structures.
In this embodiment, the multilayer honeycomb structure includes: the first high-density honeycomb layer 1, the medium-density honeycomb layer 3, and the second high-density honeycomb layer 2 are sequentially arranged from top to bottom as shown in fig. 1.
By medium density is meant a honeycomb cell density of50kg/m3～150kg/m3For example, the honeycomb cell density is 50kg/m3、70kg/m3、85kg/m3、100kg/m3、120kg/m3Or 150kg/m3High density means that the density of honeycomb holes is more than 150kg/m3For example, the honeycomb cell density is 160kg/m3、180kg/m3、200kg/m3、250kg/m3、280kg/m3Or 300kg/m3The first high-density honeycomb layer and the second high-density honeycomb layer have the same or different cell densities, and the cell densities of the first high-density honeycomb layer and the second high-density honeycomb layer are both greater than the cell density of the medium-density honeycomb layer.
As shown in fig. 5, the first high-density honeycomb layer 1, the second high-density honeycomb layer 2 and/or the medium-density honeycomb layer 3 include a plurality of honeycomb subunits, that is, the first high-density honeycomb layer 1 includes a plurality of first honeycomb subunits 61, the second high-density honeycomb layer 2 includes a plurality of second honeycomb subunits 62, and the medium-density honeycomb layer 3 includes a plurality of third honeycomb subunits 63. The first cell sub-unit 61, the second cell sub-unit 62 and the third cell sub-unit 63 are combined with each other in the axial direction of the cell holes to form the cell connecting unit 6, and a plurality of cell connecting units 6 are connected to each other. The honeycomb connecting units 6 are connected with each other and extend to the periphery along the radial direction of the honeycomb holes to form an integral stress structure. In the present embodiment, the first cell subunit 61, the second cell subunit 62, the third cell subunit 63, and the cell connecting unit 6 are all rectangular solids.
The honeycomb connecting unit 6 is provided with the first tensile layer 4, and specifically, the first honeycomb subunit 61, the second honeycomb subunit 62, the third honeycomb subunit 63 and the first tensile layer 4 are combined with each other in the axial direction of the honeycomb holes to form the honeycomb connecting unit 6. In the present embodiment, as shown in fig. 5, the first honeycomb subunit 61, the third honeycomb subunit 63, and the second honeycomb subunit 62 are sequentially arranged from top to bottom in the axial direction of the honeycomb hole, and the first tensile layer 4 is arranged between the first honeycomb subunit 61 and the third honeycomb subunit 63, between the third honeycomb subunit 63 and the second honeycomb subunit 62, and on the upper surface of the first honeycomb subunit 61 and the lower surface of the second honeycomb subunit 62, so as to form a honeycomb connecting unit 6. The first tensile layer 4 is connected to each of the honeycomb subunits 61, 62, 63 by bonding.
As shown in fig. 1, this embodiment further includes a connecting mechanism for connecting any two honeycomb connecting units 6. Coupling mechanism include the banding section bar, the banding section bar sets up in honeycomb linkage unit 6's tip, the banding section bar includes first banding section bar 7 and the second banding section bar 8 that can mutually support, different honeycomb subelement 61, 62, 63 are connected respectively to first banding section bar 7 and second banding section bar 8. The connecting mechanism also comprises a honeycomb connecting block 9.
In this embodiment, the edge banding section bar is disposed at an end of the third honeycomb subunit 63, and a plurality of edge banding section bars may be disposed according to the honeycomb height of the third honeycomb subunit 63. The shapes of the end parts of the first edge sealing section bar 7 and the second edge sealing section bar 8 are matched, and the connection mode comprises bonding or locking connection. The first tensile layer 4 on the honeycomb subunits may be pre-extended such that the first tensile layer 4 extends to the corresponding edge banding profile surface. Set up honeycomb connecting block 9 on the first tensile layer 4 of two banding section bars of interconnect, like this, the banding section bar's that two banding section bars link to each other top and below all set up honeycomb connecting block 9. The honeycomb connecting block 9 is of a honeycomb structure. The honeycomb connecting block 9 of the embodiment is a honeycomb hole density of more than 150kg/m3Of a high-density honeycomb structure, e.g. having a cell density of 160kg/m3、180kg/m3、200kg/m3、250kg/m3、280kg/m3Or 300kg/m3. The honeycomb holes of the honeycomb connecting block 9 are axially aligned with the honeycomb holes of the honeycomb sub-units 61, 62, 63. And a second tensile layer 10 is arranged on the upper surface and/or the lower surface of the honeycomb connecting block 9 in an adhesion mode. The honeycomb connecting blocks 9 are internally provided with bolt connecting pieces 11, and the bolt connecting pieces 11 are used for connecting the two honeycomb connecting blocks 9 above and below the edge sealing section bar.
The first tensile layer 4 and/or the second tensile layer 10 are made of fiber reinforced resin. Fiber reinforced resins are composites of fibers and resins. The fiber comprises one or more of glass fiber, basalt fiber, aramid fiber, ceramic fiber, bamboo fiber, cloth, carbon fiber, metal fiber, boron fiber, asbestos fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide fiber, cotton fiber and sisal. The resin comprises one or more of vinyl resin, epoxy resin, phenolic resin, polyurethane resin, benzoxazine resin, polyimide resin, bismaleimide resin, urea resin, melamine resin, unsaturated polyester resin, organic silicon resin and polyurethane.
As shown in fig. 1 and 5, in use, the first honeycomb subunit 61, the third honeycomb subunit 63, the second honeycomb subunit 62 and the first tensile layer 4 are adhered to each other to form a plurality of honeycomb connecting units 6, and the first honeycomb subunit 61, the third honeycomb subunit 63 and the second honeycomb subunit 62 are sequentially arranged from top to bottom as shown in fig. 1 and 5. The end parts of two adjacent third honeycomb subunits 63 are respectively provided with a first edge banding section bar 7 and a second edge banding section bar 8, that is, one of the first edge banding section bar 7 and the second edge banding section bar 8 is arranged at the end part of one third honeycomb subunit 63, and the other edge banding section bar is arranged at the end part of the other third honeycomb subunit 63. The first edge banding section bar 7 and the second edge banding section bar 8 are connected and/or bonded through lock catch, so that the two honeycomb connecting units 6 are connected. The first tensile layers 4 provided on the upper and lower surfaces of the third honeycomb subunit 63 are extended in advance so that the first tensile layers 4 extend to the upper and lower surfaces of the first edge banding profile 7 or the second edge banding profile 8. Set up honeycomb connecting block 9 on first tensile layer 4 above first banding section bar 7 and second banding section bar 8, set up honeycomb connecting block 9 under first tensile layer 4 of first banding section bar 7 and second banding section bar 8 below, two upper and lower honeycomb connecting blocks 9 pass through bolted connection 11 and screw up. In order to continuously increase the splicing strength of the adjacent honeycomb connecting units 6, the upper surface of the honeycomb connecting block 9 located above is provided with a second tensile layer 10, and the lower surface of the honeycomb connecting block 9 located below is provided with the second tensile layer 10. Thus, after the bonding glue is cured, all the spliced honeycomb connecting units 6 are integrated into a whole and are stressed integrally. Then, the protector 12 is laid on the completed structure.
The protective body 12 may also be provided in advance, that is, the protective body 12 may be provided on the first tensile layer 4 above the first honeycomb subunit 61. When connecting, if there is a gap between the protective bodies 12 corresponding to the two honeycomb connecting units 6, as shown in fig. 6, the gap, that is, the upper portion of the second tensile layer 10 located at the uppermost position in fig. 6, is filled with the asphalt protective body or the quartz sand resin layer 5.
As shown in fig. 1, the present embodiment is described by taking two cellular connection units 6 as an example. The honeycomb connecting unit 6 is generally rectangular parallelepiped. When the plurality of honeycomb link units 6 are connected, the link mechanisms are provided on the left and right sides of the honeycomb link units 6 and the front and rear sides of the sheet of fig. 1, so that the entire structure extends all around in the radial direction of the honeycomb holes.
Or the end of the third honeycomb subunit 63 is bonded with the edge sealing section bar, and the two edge sealing section bars are connected and/or bonded through the lock catch, so that the two third honeycomb subunits 63 are connected, and the first honeycomb subunit 61, the second honeycomb subunit 62, the first tensile layer 4, the honeycomb connecting block 9, the second tensile layer 10, the protective body 12 and other structures are further arranged. Finally forming a stressed integral structure.
The honeycomb sub-units 61, 62 and 63 and/or the honeycomb holes of the honeycomb connecting block 9 are filled with foam material. The foam material can be selected according to the actual selection of the foam material with heat insulation performance, and the embodiment selects polyurethane foam, polyphenyl foam or phenolic foam.
As shown in fig. 7, a geotextile sand-coated layer 13 is provided under the honeycomb structure. The geotextile sand-coated layer 13 is geotextile containing sand inside. When the honeycomb structure is used, the honeycomb structure and the geotextile sand-coated layer 13 are directly laid on a marsh or soft soil layer, and a permanent road or a temporary road is constructed without laying a riprap roadbed and a fill soil layer.
As shown in fig. 8, a sand layer 14 can be arranged below the geotextile sand-coated layer 13 according to the requirement. When the pavement is paved, the soft soil on the pavement can be leveled, and then the sand layer 14 and the geotextile sand-coated layer 13 are paved, so that the traditional pavement foundation structure can be saved.
Example 2
As shown in fig. 9, the present embodiment includes a filler layer 16, and the filler layer 16 is disposed below the honeycomb structure. In another embodiment, as shown in fig. 10, the honeycomb structure, the geotextile sand-coated layer 13, and the filler layer 16 are sequentially disposed from top to bottom.
Some frozen earth pavements may be wading in some parts of the season, in which case the riprap layer 15 may be used, the riprap layer 15 providing insulation and ventilation. The polished stone layer 15 is a polished stone or gravel road bed. For example, as shown in fig. 11, the honeycomb structure, the geotextile sand-coated layer 13, the soil filling layer 16, and the riprap layer 15 are sequentially disposed from top to bottom. In another embodiment, for example, as shown in fig. 12, the honeycomb structure, the soil filling layer 16 and the riprap layer 15 are sequentially arranged from top to bottom.
Example 3
As shown in fig. 13, an elevated structure 17 is provided below the honeycomb structure, and the elevated structure 17 includes a pillar. This is suitable where the frozen earth surface involves the migration of animals, ensuring the passage of animals, people or water.
Example 4
As shown in fig. 14, this embodiment is a simplified embodiment, and includes one layer of honeycomb structure, i.e., the first high-density honeycomb layer 1. The first high-density honeycomb layer 1 is formed by connecting a plurality of first honeycomb subunits 61 by a connecting means including a connecting mechanism and bonding. The upper surface and the lower surface of the first high-density honeycomb layer 1 are provided with first tensile layers 4, respectively. A protective body 12 is provided above the first tensile layer 4 on the upper surface of the first high-density honeycomb layer 1. As in examples 1, 2, and 3, the lower part of the honeycomb structure may be provided as needed, and a geotextile-wrapped sand layer 13 and a sand layer 14 are provided below the first high-density honeycomb layer 1 in this example.
Example 5
As shown in fig. 15, this embodiment is a simplified embodiment, and includes two honeycomb structures, i.e., a first high-density honeycomb layer 1 and a second high-density honeycomb layer 2, and the first high-density honeycomb layer 1 and the second high-density honeycomb layer 2 are arranged by being bonded to each other in the vertical direction. The first high-density honeycomb layer 1 is formed by connecting a plurality of first honeycomb subunits 61, and the second high-density honeycomb layer 2 is formed by connecting a plurality of second honeycomb subunits 62, and the connecting mode comprises connecting mechanism connection and bonding. The first tensile layer 4 is provided on the upper surface of the first high-density honeycomb layer 1, between the first high-density honeycomb layer 1 and the second high-density honeycomb layer 2, and on the lower surface of the second high-density honeycomb layer 2, respectively. A protective body 12 is provided above the first tensile layer 4 on the upper surface of the first high-density honeycomb layer 1. As in examples 1, 2, and 3, the lower part of the honeycomb structure may be provided as needed, and in this example, a geotextile-wrapped sand layer 13 and a sand layer 14 are provided below the second high-density honeycomb layer 2.
The honeycomb structure can be used for dispersing automobile tire load, and the automobile tire load is dispersed to the whole honeycomb structure from one point of the honeycomb structure. In the multilayer honeycomb structure, the first high-density honeycomb layer 1 directly bears the load of an automobile, a forklift or other heavy wheeled equipment, and the second high-density honeycomb layer 2 is in contact with the load of a road such as a stone below, so that the density and the strength of the two layers of honeycombs are set to be larger, and the two layers of honeycombs can bear certain load; since the load is already dispersed when reaching the middle-density honeycomb layer 3 of the intermediate layer, the middle-density honeycomb layer 3 is set to be smaller from the viewpoint of cost saving; the first tensile layer 4 and the second tensile layer 10 are used for force connection.
The invention can effectively and evenly disperse the concentrated load of a single tire of a vehicle which repeatedly passes on the road surface and is up to about 8 tons to the road surface below the invention. The invention can be applied to frozen soil pavements. Under the condition of a frozen soil road surface, even if large-area melting or hollow phenomenon occurs to frozen soil, the maximum contact pressure between the frozen soil and a frozen soil base layer is still less than 1.4 tons per square meter; under the uniform load state, even if the melted frozen earth is soft, the frozen earth still can be in an elastic deformation state, so that the whole collapse of the road surface using the invention can not occur, and when the vehicle tire load leaves, the micro deformation of the road surface can be completely recovered. The honeycomb of honeycomb subelement and/or honeycomb connecting block 9 packs the foam material, increases the thermal insulation performance of honeycomb material, more does benefit to under the frozen soil road surface condition, prevents that the summer of frozen soil from melting the phenomenon. The invention can also be used for swamps or soft road sections, urban municipal roads and highways.
The embodiments of the present invention are merely illustrative, and not restrictive, of the scope of the claims, and other substantially equivalent alternatives may occur to those skilled in the art and are within the scope of the present invention.
Claims (15)
1. A pavement structure, comprising:
one or more layers of honeycomb structures, wherein the honeycomb structures are honeycomb structures, and the axial directions of honeycomb holes are vertical to the ground direction; in the multilayer honeycomb structure body, the honeycomb pore density of each layer of honeycomb structure body is the same or different;
and a protective member provided above the honeycomb structure.
2. A pavement structure as set forth in claim 1, wherein said multilayer honeycomb structure comprises: first high density honeycomb layer, medium density honeycomb layer and second high density honeycomb layer, first high density honeycomb layer, medium density honeycomb layer and second high density honeycomb layer set up from last to down in order, and the honeycomb hole density of first high density honeycomb layer and second high density honeycomb layer is the same or inequality, and the honeycomb hole density of first high density honeycomb layer and second high density honeycomb layer all is greater than the honeycomb hole density of medium density honeycomb layer.
3. The pavement structure according to claim 2, wherein the first high-density honeycomb layer, the second high-density honeycomb layer and/or the medium-density honeycomb layer comprise a plurality of honeycomb subunits, i.e., the first high-density honeycomb layer comprises a plurality of first honeycomb subunits, the second high-density honeycomb layer comprises a plurality of second honeycomb subunits, the medium-density honeycomb layer comprises a plurality of third honeycomb subunits, and the first honeycomb subunits, the second honeycomb subunits and the third honeycomb subunits are combined with each other in the axial direction of the honeycomb holes to form honeycomb connecting units, and the plurality of honeycomb connecting units are connected with each other.
4. The pavement structure according to claim 3, further comprising a first tensile layer, wherein the first honeycomb subunit, the third honeycomb subunit and the second honeycomb subunit are arranged in sequence from top to bottom along the axial direction of the honeycomb hole, and the first tensile layer is arranged between the first honeycomb subunit and the third honeycomb subunit, between the third honeycomb subunit and the second honeycomb subunit, on the upper surface of the first honeycomb subunit and on the lower surface of the second honeycomb subunit, respectively.
5. A pavement structure according to claim 1, characterized in that a first tensile layer is provided above and/or below the honeycomb structure; a first tensile layer is disposed between the multi-layered honeycomb structure.
6. A pavement structure according to claim 4, further comprising a connecting mechanism by which two honeycomb connecting units are connected.
7. A pavement structure according to claim 6, characterized in that the connection means comprises edge banding profiles provided at the ends of the honeycomb connecting units, the edge banding profiles comprising a first edge banding profile and a second edge banding profile adapted to be coupled to each other, the first edge banding profile and the second edge banding profile being coupled to different honeycomb sub-units, respectively.
8. A pavement structure as claimed in claim 7, wherein the connecting mechanism further comprises a honeycomb connecting block, the edge banding section is disposed at the end of the third honeycomb subunit, the first tensile layer extends to the surface of the edge banding section, and the honeycomb connecting block is disposed on the first tensile layer of the two edge banding sections connected with each other; the honeycomb connecting block is of a honeycomb structure, and the axial direction of a honeycomb hole of the honeycomb connecting block is consistent with the axial direction of a honeycomb hole of a honeycomb subunit; the upper surface and/or the lower surface of the honeycomb connecting block is/are provided with a second tensile layer; and a connecting piece is arranged in the honeycomb connecting block and is used for connecting the two honeycomb connecting blocks.
9. A pavement structure as claimed in claim 8, characterized in that the first and/or second tensile layer is/are made of fibre-reinforced resin.
10. A pavement structure according to claim 8, characterized in that the cells of said cell sub-units and/or cell connector blocks are filled with a foam material.
11. A pavement structure according to claim 1, characterized in that the honeycomb cell shape of said honeycomb structure comprises any geometric shape.
12. A pavement structure according to claim 1, further comprising a geotextile sand-wrapped layer and/or a sand layer, wherein the geotextile sand-wrapped layer is disposed under the honeycomb structure, or the geotextile sand-wrapped layer and the sand layer are disposed under the honeycomb structure, and the sand layer is disposed under the geotextile sand-wrapped layer.
13. A pavement structure according to claim 12, further comprising a filler layer provided below the honeycomb structure or a geotextile-wrapped sand layer and/or a riprap layer provided below the filler layer.
14. A pavement structure according to claim 1, characterized in that an elevated structure is provided below said honeycomb structure, said elevated structure comprising pillars.
15. A pavement structure according to any of claims 1-14, characterized in that said pavement structure is a pavement structure for roads in soft conditions, including frozen earth or marshes.
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