CN210507015U - Base skeleton for asphalt concrete pavement - Google Patents

Abstract

The utility model discloses a basic unit skeleton for asphalt concrete pavement, concretely relates to material field for highway construction, including bituminous paving, bituminous paving's bottom is equipped with the waterproof asphalt layer, bituminous paving's lower surface and the last fixed surface on waterproof asphalt layer are connected, the bottom on waterproof asphalt layer is equipped with the metalling, the lower surface on waterproof asphalt layer is connected with the last fixed surface on metalling, the bottom on metalling is equipped with the basic unit, the lower surface and the basic unit fixed connection on metalling, geogrid has been laid to the upper surface of basic unit. The utility model discloses a set up geogrid, the effectual interlocking interlock effect that inlays that has improved the reinforced loading end through setting up geotechnological cloth, avoids metalling or the tiny soil property of basic unit to run off, has improved local bearing capacity, stabilizes the planarization of whole face, through setting up the toper pole, is convenient for insert the basic unit with geogrid, plays further reinforced (rfd) effect, reduces the road surface and warp.

Description

Base skeleton for asphalt concrete pavement

Technical Field

The utility model relates to a material technical field for the highway construction, more specifically say, the utility model relates to a basic unit's skeleton for asphalt concrete pavement.

Background

With the rapid development of highway construction in China, the asphalt concrete pavement becomes a mainstream structure in the highway construction, and the asphalt concrete pavement has small rigidity and weak load distribution capacity and needs to be provided with a semi-rigid base layer as a main bearing layer. The semi-rigid base layer mainly comprises a cement stabilized aggregate base layer or a lime-fly-gravel base layer. The semi-rigid substrate has certain strength, rigidity and integrity, and has better water stability and frost resistance.

However, in practical use, there still exist many disadvantages, such as that the semi-rigid base layer is very dense, so that the water permeability is very poor, and when water enters the pavement from various ways and reaches the base layer, it cannot be rapidly discharged from the base layer, so that it can only diffuse and accumulate along the interface between the asphalt layer and the base layer, so that the stress state of the pavement changes and cracks are caused on the pavement, and therefore, it is necessary to design a base layer skeleton capable of preventing cracks from being generated on the asphalt layer.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a basic unit's skeleton for asphalt concrete road surface connects the geogrid of constituteing through setting up by upper layer connection grid and lower floor connection grid, and the effectual interlocking interlock effect that has improved the reinforced loading end reduces the road surface and warp to solve the problem of proposing in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a base layer skeleton for an asphalt concrete pavement comprises an asphalt pavement, wherein a waterproof asphalt layer is arranged at the bottom of the asphalt pavement, the lower surface of the asphalt pavement is fixedly connected with the upper surface of the waterproof asphalt layer, a gravel layer is arranged at the bottom of the waterproof asphalt layer, the lower surface of the waterproof asphalt layer is fixedly connected with the upper surface of the gravel layer, a base layer is arranged at the bottom of the gravel layer, the lower surface of the gravel layer is fixedly connected with the base layer, a geogrid is paved on the upper surface of the base layer, a reinforcing mechanism is arranged in the base layer, a roadbed is arranged at the bottom of the base layer, and the lower surface of the base layer is fixedly connected with the upper surface of the roadbed;

the geogrid is of a double-layer structure and is formed by combining an upper-layer connection grid and a lower-layer connection grid together, the upper surface of the upper-layer connection grid is fixedly connected with the lower surface of the lower-layer connection grid, geotextile is fixedly embedded between the connection positions of the upper-layer connection grid and the lower-layer connection grid, the upper-layer connection grid and the lower-layer connection grid are both composed of transverse grid strips and longitudinal grid strips in a matrix arrangement mode, the transverse grid strips and the longitudinal grid strips are fixedly connected, conical rods penetrating through the upper-layer connection grid and the lower-layer connection grid are fixedly installed at the connection positions of the transverse grid strips and the longitudinal grid strips, and one ends of the conical rods, which are positioned outside the bottom surface of the lower-layer connection grid, are inserted into the upper surface of the base;

the reinforcing mechanism comprises a reinforcing rod, the reinforcing rod is fixedly embedded in the base layer, a plurality of rod shoulders which are uniformly distributed are arranged on the rod wall of the reinforcing rod, the rod shoulders and the reinforcing rod are integrally formed, the reinforcing mechanism further comprises a reinforcing rib, the reinforcing rib penetrates through the base layer and is installed in the base layer, and the reinforcing rib and the reinforcing rod are at vertical angles.

In a preferred embodiment, the tapered rod is sleeved with a nut on the rod wall outside the upper surface of the upper connecting grid, and the nut is in threaded connection with the tapered rod.

In a preferred embodiment, the rod wall of the conical rod, which is positioned outside the lower surface of the lower connecting grid, is fixedly sleeved with a stop block, and the stop block and the conical rod are integrally formed.

In a preferred embodiment, the base layer comprises a first base block and a second base block, the first base block and the second base block are in an L-shaped structure matched with each other, and the first base block and the second base block are fixedly connected through a reinforcing rod.

In a preferred embodiment, the asphalt pavement is provided with side ditches on both sides, and the bottom ends of the side ditches extend to the inner part of the gravel layer.

In a preferred embodiment, the waterproof asphalt layer is internally provided with symmetrically distributed vertical drainage channels in a penetrating manner, and the bottom ends of the vertical drainage channels extend to the inside of the gravel layer and are communicated with the side ditches.

In a preferred embodiment, the interior of the crushed stone layer is opened with a horizontal drainage channel, and the horizontal drainage channel and the vertical drainage channel form a vertical angle.

In a preferred embodiment, the inner portion of the geogrid is filled with a fine sand water-absorbing layer, and the geogrid is fixedly attached in the upper surface of the base layer by concrete.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up by the upper strata and connect the geogrid that the grid connects and constitute with lower floor, the effectual interlocking interlock effect that has improved the reinforced loading end, through set up geotechnological cloth between upper strata grid and lower floor's connection grid, avoid the tiny soil property loss of metalling or basic unit, improve local bearing capacity, stabilize the planarization of whole face, through setting up the toper pole, be convenient for insert geogrid in the basic unit, play further reinforced effect, reduce the road surface and warp, compared with the prior art, the road surface has avoided the road surface to lead to the progress of road surface crack because of the stress state changes;

2. the utility model has the advantages that by arranging the reinforcing mechanism, when the base layer deforms under the load, the rod shoulder provides the reverse force for inhibiting the deformation to offset the deformation force, so as to inhibit the base layer from transversely deforming, and by arranging the reinforcing rib, the bending strength of the base layer in the vertical direction is improved, and the damage of the road surface is avoided;

3. the utility model discloses a set up the concatenation of the first base block of matched with and second base block, make between two base blocks each other the bracketing, increased the bearing capacity of basic unit, can prevent effectively that the road bed is loose, compare with prior art, the road surface that inflation and shrink lead to can be avoided in the cooperation of two base blocks warp cracked.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is a top view of the geogrid of the present invention;

fig. 4 is a side sectional view of the geogrid of the present invention;

fig. 5 is a schematic view of a reinforcing mechanism provided in the base layer of the present invention.

The reference signs are: the concrete comprises 1 asphalt pavement, 11 side ditches, 2 waterproof asphalt layers, 3 gravel layers, 31 vertical drainage channels, 32 horizontal drainage channels, 4 base layers, 41 first base blocks, 42 second base blocks, 5 roadbed, 6 geogrids, 61 horizontal grid bars, 62 vertical grid bars, 63 geotextile, 64 conical rods, 65 nuts, 66 blocks, 67 upper layer connecting grids, 68 lower layer connecting grids, 7 reinforcing mechanisms, 71 reinforcing rods, 72 rod shoulders and 73 reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model relates to an asphalt concrete pavement's basic unit's skeleton can include bituminous paving 1, bituminous paving 1's bottom is equipped with waterproof asphalt layer 2, bituminous paving 1's lower surface and waterproof asphalt layer 2's last fixed surface are connected, waterproof asphalt layer 2's bottom is equipped with metalling 3, waterproof asphalt layer 2's lower surface and metalling 3's last fixed surface are connected, metalling 3's bottom is equipped with basic unit 4, metalling 3's lower surface and basic unit 4 fixed connection, geogrid 6 has been laid to basic unit 4's upper surface, basic unit 4's inside is provided with strengthening mechanism 7, basic unit 4's bottom is equipped with road bed 5, basic unit 4's lower surface and road bed 5's last fixed surface are connected.

Referring to fig. 1 to 5 of the specification, the geogrid 6 of the base course framework of the asphalt concrete pavement of the embodiment has a double-layer structure, the geogrid 6 is formed by combining an upper layer connecting grid 67 and a lower layer connecting grid 68 together, the upper surface of the upper connecting grid 67 is fixedly connected with the lower surface of the lower connecting grid 68, the geotextile 63 is fixedly embedded between the joints of the upper layer connecting grid 67 and the lower layer connecting grid 68, the upper layer connecting grids 67 and the lower layer connecting grids 68 are both composed of transverse grid bars 61 and longitudinal grid bars 62 in a matrix arrangement, the transverse grid bars 61 are fixedly connected with the longitudinal grid bars 62, tapered rods 64 penetrating through an upper layer connecting grid 67 and a lower layer connecting grid 68 are fixedly arranged at the connecting positions of the transverse grid bars 61 and the longitudinal grid bars 62, the tapered rod 64 is inserted into the upper surface of the base layer 4 at its end outside the bottom surface of the lower connecting grid 68.

Further, the reinforcing mechanism 7 includes a reinforcing rod 71, the reinforcing rod 71 is fixedly embedded in the base layer 4, a plurality of rod shoulders 72 are uniformly distributed on the rod wall of the reinforcing rod 71, the rod shoulders 72 and the reinforcing rod 71 are integrally formed, the reinforcing mechanism 7 further includes a reinforcing rib 73, the reinforcing rib 73 is installed in the base layer 4 in a penetrating manner, and the reinforcing rib 73 and the reinforcing rod 71 are perpendicular.

The implementation scenario is specifically as follows: in actual use, the geogrid 6 is arranged, the upper layer connecting grid 67 and the lower layer connecting grid 68 are connected in a staggered joint mode, when the geogrid is laid, the force is uniform, the geogrid is in a stretched and stressed state in soil, the tip end of the conical rod 64 is inserted into the upper surface of the base layer 4 to be fixed, the geogrid 6 is stably connected with the surface of the base layer 4, the stability of the geogrid 6 is enhanced, the geogrid 6 formed by connecting the upper layer connecting grid 67 and the lower layer connecting grid 68 is high in strength, small in creep deformation, suitable for various types of environmental soil, the application range of the base framework is enhanced, the interlocking and meshing effect of a reinforced bearing surface is effectively improved, the bearing capacity of the base layer 4 is greatly enhanced, the geotextile 63 is arranged between the upper layer connecting grid 67 and the lower layer connecting grid 68, and the fine soil property loss of the gravel layer 3 or the base layer 4 is avoided, the local bearing capacity is improved, the evenness of the whole surface is stabilized, through the arrangement of the conical rod 64, the geogrid 6 can be conveniently inserted into the base layer 4, the further reinforcing effect is achieved, the road surface deformation is reduced, the road surface crack caused by the change of the stress state is avoided, the reinforcing mechanism 7 is further arranged, the reinforcing rod 71 is embedded in the base layer 4, when the base layer 4 deforms under the action of load, the rod shoulder 72 arranged on the rod wall of the reinforcing rod 71 provides the force for restraining the deformation, the deformation force is offset, the transverse deformation of the base layer 4 is avoided, the reinforcing rib 73 is arranged, the bending strength of the base layer 4 in the vertical direction is improved, the damage of the road surface caused by the stress is avoided, and the problem that the road surface crack caused by the change of the stress state in the prior art is specifically solved by the implementation mode.

Further, a nut 65 is sleeved on the rod wall of the conical rod 64, which is positioned outside the upper surface of the upper layer connecting grid 67, and the nut 65 is in threaded connection with the conical rod 64.

Furthermore, a stop block 66 is fixedly sleeved on the rod wall of the conical rod 64 positioned outside the lower surface of the lower connecting grid 68, and the stop block 66 and the conical rod 64 are integrally formed.

Further, the base layer 4 comprises a first base block 41 and a second base block 42, the first base block 41 and the second base block 42 are of mutually matched L-shaped structures, and the first base block 41 and the second base block 42 are fixedly connected through a reinforcing rod 71.

Further, gutter 11 has all been seted up to bituminous paving 1's both sides, gutter 11's bottom extends to the inside of rubble layer 3.

Further, the inside of the waterproof asphalt layer 2 is penetrated and provided with the vertical drainage channels 31 which are symmetrically distributed, and the bottom ends of the vertical drainage channels 31 extend to the inside of the gravel layer 3 and are communicated with the side ditches 11.

Further, a horizontal drainage channel 32 is formed inside the crushed stone layer 3, and the horizontal drainage channel 32 and the vertical drainage channel 31 form a vertical angle.

Further, the geogrid 6 is filled with a fine sand water absorption layer, and the geogrid 6 is fixedly connected to the upper surface of the base layer 4 through concrete.

The implementation scenario is specifically as follows: when the device is in actual use, the nut 65 is arranged, so that a worker can conveniently adjust the length of the conical rod 64 according to actual conditions, the conical rod 64 is fixed through the nut 65, the conical rod 64 is prevented from loosening after being stressed, the pavement quality is prevented from being influenced, the stop block 66 is arranged, fine earth and stones can be prevented from entering a gap between the conical rod 64 and the geogrid 6 when the conical rod 64 is inserted into the base layer 4, the stability of the conical rod 64 is prevented from being influenced, the two base blocks are spliced through the first base block 41 and the second base block 42 which are matched with each other, the two base blocks are mutually supported, the bearing capacity of the base layer 4 is increased, the roadbed 5 can be effectively prevented from loosening, the two base blocks are matched, the pavement deformation and fragmentation caused by expansion and contraction can be avoided, the accumulated water on the pavement can be directly discharged from the drainage channel through the arrangement of the side ditch 11, the horizontal drainage channel 32 and the vertical drainage channel 31, the water flow is prevented from entering, the stress state of the road surface is changed to cause the road surface to crack, the fine sand water absorption layer is filled in the geogrid 6, the fine sand water absorption layer is not discharged and flows into the base layer 4, the influence of accumulated water on the base layer 4 is further avoided, and the problem that the road surface cracks due to the accumulated water in the road surface in the prior art is solved.

In summary, the following steps: the utility model discloses a setting up the geogrid 6 that is formed by connecting upper connection grid 67 and lower floor's connection grid 68, intensity is big, the creep is little, adapt to all kinds of environmental soil, the application scope of basic skeleton has been strengthened, and the interlocking interlock effect of reinforced loading end has effectively been improved, through setting up geotechnological cloth 63 between upper connection grid 67 and lower floor's connection grid 68, avoid the tiny soil property loss of metalling 3 or basic unit 4, local bearing capacity has been improved, the planarization of whole face is stabilized, through setting up the bell-shaped pole 64, be convenient for insert geogrid 6 in basic unit 4, play the effect of further reinforcement, reduce the road surface and warp, avoided the road surface to lead to the road surface crack because of the stress state changes; still through setting up strengthening mechanism 7, when basic unit 4 takes place to deform receiving the load, the bar shoulder 72 provides the counterforce of restraining deformation, offsets the deformation power, and it takes place lateral deformation to restrain basic unit 4, through setting up strengthening rib 73, improves the ascending bending strength of basic unit 4 vertical side, avoids the road surface atress to appear damaging.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a basic unit skeleton for bituminous concrete pavement, includes bituminous pavement (1), its characterized in that: the asphalt pavement structure is characterized in that a waterproof asphalt layer (2) is arranged at the bottom of the asphalt pavement (1), the lower surface of the asphalt pavement (1) is fixedly connected with the upper surface of the waterproof asphalt layer (2), a gravel layer (3) is arranged at the bottom of the waterproof asphalt layer (2), the lower surface of the waterproof asphalt layer (2) is fixedly connected with the upper surface of the gravel layer (3), a base layer (4) is arranged at the bottom of the gravel layer (3), the lower surface of the gravel layer (3) is fixedly connected with the base layer (4), a geogrid (6) is laid on the upper surface of the base layer (4), a reinforcing mechanism (7) is arranged inside the base layer (4), a roadbed (5) is arranged at the bottom of the base layer (4), and the lower surface of the base layer (4) is fixedly connected with the upper surface of the roadbed (5);

geogrid (6) is bilayer structure, geogrid (6) is formed by upper layer connection grid (67) and lower floor connection grid (68) combination together, the upper surface of upper layer connection grid (67) and the lower fixed surface of lower floor connection grid (68) are connected, fixed the inlaying between upper layer connection grid (67) and lower floor connection grid (68) junction has geotechnological cloth (63), upper layer connection grid (67) and lower floor connection grid (68) constitute with the matrix arrangement form by horizontal grid (61) and vertical grid (62), horizontal grid (61) and vertical grid (62) fixed connection, the hookup location fixed mounting of horizontal grid (61) and vertical grid (62) has toper pole (64) that run through upper layer connection grid (67) and lower floor connection grid (68), toper pole (64) are located the one end of lower floor connection grid (68) bottom outside and insert the basic unit (4) An upper surface;

reinforcing mechanism (7) include stiffening rod (71), the fixed inside of inlaying in basic unit (4) of stiffening rod (71), be equipped with a plurality of pole shoulder (72) of evenly distributed on the pole wall of stiffening rod (71), pole shoulder (72) and stiffening rod (71) are as an organic whole and take shape, reinforcing mechanism (7) still include strengthening rib (73), strengthening rib (73) run through the inside of installing in basic unit (4), strengthening rib (73) are perpendicular angle with stiffening rod (71).

2. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: the conical rod (64) is positioned on the rod wall outside the upper surface of the upper layer connecting grid (67), and is sleeved with a nut (65), and the nut (65) is in threaded connection with the conical rod (64).

3. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: the conical rod (64) is fixedly sleeved with a stop block (66) on the rod wall outside the lower surface of the lower-layer connecting grid (68), and the stop block (66) and the conical rod (64) are integrally formed.

4. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: the base layer (4) comprises a first base block (41) and a second base block (42), the first base block (41) and the second base block (42) are L-shaped structures matched with each other, and the first base block (41) is fixedly connected with the second base block (42) through a reinforcing rod (71).

5. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: the gutter (11) have all been seted up to the both sides of bituminous paving (1), the bottom of gutter (11) extends to the inside of metalling (3).

6. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: the inside of waterproof asphalt layer (2) is run through and is seted up the perpendicular drainage channel (31) of symmetric distribution, the bottom of perpendicular drainage channel (31) extends to the inside of metalling (3) and communicates each other with side ditch (11).

7. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: a horizontal drainage channel (32) is formed in the crushed stone layer (3), and the horizontal drainage channel (32) and the vertical drainage channel (31) form a vertical angle.

8. A substrate carcass for an asphalt pavement according to claim 1, characterized in that: the inner part of the geogrid (6) is filled with a fine sand water absorption layer, and the geogrid (6) is fixedly connected into the upper surface of the base layer (4) through concrete.

Images