CN210262550U - Asphalt pavement structure based on cement pavement - Google Patents
Asphalt pavement structure based on cement pavement Download PDFInfo
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- CN210262550U CN210262550U CN201920873494.2U CN201920873494U CN210262550U CN 210262550 U CN210262550 U CN 210262550U CN 201920873494 U CN201920873494 U CN 201920873494U CN 210262550 U CN210262550 U CN 210262550U
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- waterproof drainage
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Abstract
The utility model discloses a bituminous paving structure based on cement road surface, the lower part on cement surface course is the cube, upper portion is the right trapezoid platform of 65 chamfers for the front side, the dowel steel device is "￢" type FRP reinforcement, the horizontal segment front portion of ￢ "type FRP reinforcement is inserted and is located in the drilling at right trapezoid platform front side middle part, waterproof drainage device's front end is inserted and is located in the channel of right trapezoid platform front side bottom, set up one row of through-hole A who runs through from top to bottom on the waterproof drainage device, vertical section through" ￢ "type FRP reinforcement is inserted respectively and is established in establishing the through-hole A who is fixed in waterproof drainage device, waterproof drainage device erects the side on cement surface course, the pitch surface course is pour in the cement surface course, dowel steel device and waterproof drainage device top. The utility model discloses a dowel steel combines with waterproof drainage device to prevent that the rainwater from influencing basic unit's bearing capacity by flange crack infiltration, has promoted structural durability to cooperation cement surface course 65 chamfers are handled and can be improved the crack control performance on cement asphalt pavement greatly.
Description
Technical Field
The utility model belongs to the technical field of highway engineering, concretely relates to bituminous paving structure based on cement road surface.
Background
The traditional construction scheme adopts a base layer flattening connection method to solve the problem of the connection of an old cement pavement and an asphalt pavement. This scheme can stagger surface course crack and basic unit crack, avoids the surface course to combine the department to appear pitch and peel off and the wrong platform phenomenon influences driving comfort level. However, the structure only avoids the superposition of adverse effects, weakens the influence degree of the adverse factors on traffic to a certain extent, and the joint of the cement and the asphalt pavement base layer still cracks along with the accumulation of fatigue strain to form a reflection crack to cause the cracking of the asphalt surface layer. Particularly, when the precipitation is large, the reflection cracks of the base layer can cause rainwater to seep down to the sand cushion layer and the roadbed, so that the bearing capacity of the base layer is reduced, and new cracks are easily formed and even pavement slabs at the cracks are easily settled under the load of vehicles.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide one kind and can reduce the bituminous paving structure based on cement road surface of cement road surface and bituminous paving basic unit handing-over department reflection crack to bituminous paving layer influence.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:
the utility model provides an asphalt pavement structure based on cement road surface, including the cement surface course, the dowel steel device, waterproof drainage device and bituminous surface layer, the upper portion on cement surface course is the right trapezoid platform, the lower part is the cube, the front side of right trapezoid platform is 65 chamfers, one row of drilling has transversely been seted up at right trapezoid platform leading flank middle part, the channel has transversely been seted up to right trapezoid platform leading flank bottom, the dowel steel device is "￢" type FRP arrangement of reinforcement, "￢" type FRP arrangement of reinforcement's horizontal segment front portion is inserted and is located in the drilling, waterproof drainage device's front end is inserted and is located in the channel, set up one row of through-hole A that runs through from top to bottom on the waterproof drainage device, vertical section through "￢" type FRP arrangement of reinforcement is inserted respectively and is established and is fixed in through-hole A, waterproof drainage device erects the side on cement surface course, the bituminous surface course is pour in the cement surface course.
Further, the cement surface course is laid above the semi-rigid base course, the asphalt surface course is laid above the rigid base course, and the semi-rigid base course and the rigid base course are both laid above the subbase course.
Furthermore, the front part of the horizontal section of the dowel bar device is a smooth cylindrical rod which is inserted into the drilled hole, the rear part of the horizontal section of the dowel bar device and the vertical part of the dowel bar device are threaded rods, and the vertical part is inserted into and fixed in a through hole A of the waterproof drainage device.
Further, the horizontal segment and the vertical segment of dowel bar device external diameter are 16mm, and the horizontal segment total length of dowel bar device 300mm, and wherein smooth cylinder rod length is 150mm, and the vertical portion of dowel bar device is 50 mm.
Furthermore, the aperture of the drill hole is 17mm, the depth of the drill hole is 150mm, the drill hole is as long as the smooth cylindrical rod of the dowel bar device, the interval between the drill holes is 100mm, the height of the drill hole from the bottom edge of the front side surface of the right trapezoid table is 50mm, and the smooth cylindrical rod of the dowel bar device is inserted into the drill hole and filled with asphalt filler in a caulking manner.
Further, waterproof drainage device is the FRP board, the FRP board is formed by last FRP orifice plate and lower FRP orifice plate upper and lower symmetric connection, it sets up one row of through-hole A that runs through from top to bottom to correspond on last FRP orifice plate and the lower FRP orifice plate, upper groove B and lower groove C have transversely evenly been seted up respectively to the lower surface of going up the FRP orifice plate and the upper surface of lower FRP orifice plate, upper groove B and lower groove C size are the same, are width 10mm, degree of depth 5mm, and the position corresponds, and the concatenation is hollow cuboid concave channel.
Furthermore, the aperture of the through holes A is 17mm, the interval between the through holes A is 100mm, the number of the through holes A is the same as that of drilled holes, and the vertical parts of the dowel bar device are inserted into the through holes A and filled with asphalt filler in a caulking manner.
Further, the asphalt surface course is poured behind cement surface course, dowel steel device and waterproof drainage device top, carries out the preliminary compaction of surface vibrations earlier, and later adoption scraping chi and the flattening of plastering machine compaction, the clear limit of final, the whole seam, the further flattening of repair.
The utility model discloses following beneficial effect has:
1) the contact angle part of the cement surface layer and the asphalt surface layer is chamfered, so that stress concentration caused at the corner part of the cement surface layer when the cement surface layer is loaded can be avoided, longitudinal settlement inconsistency and corner part cracking degree are reduced, the influence of reflection cracks on cracks of the asphalt surface layer is reduced, the rainwater corrosion resistance of a base layer at a joint part is improved, the service life of an asphalt pavement is prolonged, further, the chamfer angle of the chamfer treatment is 65 degrees, the difference between tangential uncoordinated strain quantities of the joint cracks is minimum, the difference between normal uncoordinated strain quantities is not large, the deformation coordination of the pavement is facilitated, and the joint part of the base layer can be protected from smaller damage;
2) set up the dowel device between cement surface course and pitch surface course, be used for communicateing cement surface course and pitch surface course, the dowel device adopts FRP arrangement of reinforcement, FRP arrangement of reinforcement is corrosion-resistant, can use for a long time, the coefficient of thermal expansion is close to the concrete, specific strength is higher, when load loading is when basic unit handing-over position, it is even to make overall structure atress through FRP arrangement of reinforcement, avoid appearing stress concentration phenomenon, lead to handing-over crack pointed end both sides to take place uncoordinated deformation and produce the reflection crack, FRP arrangement of reinforcement and the round surface of cement surface course one side surface, it is deep to make things convenient for punch at old cement surface course side, FRP arrangement of reinforcement and pitch surface course are connected one side surface threaded, effectively strengthen the adhesive property of dowel device and pitch surface course.
3) The tail end of the dowel bar device is bent downwards by 90 degrees, so that the waterproof drainage device can be preliminarily fixed, and the dowel bar device can be in a multidirectional stress state in an asphalt surface layer, and the stress dispersion capacity is improved.
4) Waterproof drainage device adopts FRP panel preparation, and waterproof drainage device utilizes the poor characteristic of FRP material water permeability to prevent that handing-over position basic unit from receiving the rainwater influence and producing the crack, and in waterproof drainage device's front end inserted the channel of cement surface course side, fill waterproof pitch stopping caulking with the dowel steel device junction, make waterproof drainage device erect in the cement surface course side, prevent rainwater infiltration when promoting structural integrity, the utility model discloses hand-over position and basic unit handing-over position stagger, effectively avoided the handing-over position to appear subsiding the problem by a wide margin, stagger surface course crack and basic unit crack, avoid surface course junction to appear that pitch peels off and the wrong platform phenomenon influences the driving comfort level, the practicality is strong.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a longitudinal cross-sectional front elevation view of FIG. 1 after assembly;
FIG. 3 is a schematic structural view of the upper FRP pore plate of the present invention;
fig. 4 is a schematic structural view of the lower FRP orifice plate of the present invention.
Wherein the reference numerals are: the concrete surface course comprises a cement surface course 1, a dowel bar device 2, a waterproof drainage device 3, an asphalt surface course 4, a semi-rigid base course 5, a rigid base course 6, a subbase 7 and a soil layer 8.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in figures 1 and 2, the utility model discloses a bituminous pavement structure based on cement pavement, including cement surface course 1, dowel steel device 2, waterproof drainage device 3 and bituminous surface course 4, the upper portion of cement surface course 1 is the right trapezoid platform, the lower part is the cube, the front side of right trapezoid platform is 65 chamfers, the middle part of the front side of right trapezoid platform has transversely seted up one row of drilling, the channel has transversely been seted up to right trapezoid platform front side bottom, dowel steel device 2 is "￢" type FRP arrangement muscle, "￢" type FRP arrangement muscle the horizontal segment front portion insert locate in drilling, the front end of waterproof drainage device 3 inserts in locating in the channel, fill waterproof pitch stopping caulking from the channel, prevent rainwater infiltration when promoting structural integrity, set up one row of through-hole A that runs through from top to bottom on the waterproof drainage device 3, insert respectively through the vertical section of "￢" type FRP arrangement muscle and be fixed in through-hole A, waterproof drainage device 3 erects in the side of cement surface course 1, and pitch surface course 4 is laid and is pour in cement surface course 1, dowel steel device 2 and waterproof drainage device 3 tops, after pitch surface course 4 is pour, carries out the preliminary compaction of surface vibrations earlier, then adopts to scrape chi and the flattening of plastering machine compaction, and the clear limit of final, the whole seam is repaired further the flattening.
As shown in fig. 1, the cement surface course 1 is laid above the semi-rigid base course 5, the asphalt surface course 4 is laid above the rigid base course 6, the semi-rigid base course 5 and the rigid base course 6 are both laid above the subbase 7, and the subbase 7 is laid above the soil layer 8.
As shown in fig. 1, the front part of the horizontal section of the dowel bar device 2 is a smooth cylindrical bar, which is inserted into a drilled hole, the rear part of the horizontal section and the vertical part of the dowel bar device 2 are threaded bars, and the vertical part is inserted and fixed in the through hole a of the waterproof drainage device 3.
In an embodiment, the outer diameters of the horizontal section and the vertical section of the dowel bar device 2 are both 16mm, the total length of the horizontal section of the dowel bar device 2 is 300mm, the length of the smooth cylindrical rod is 150mm, and the vertical part of the dowel bar device 2 is 50 mm.
In the embodiment, the bore diameter of the drill hole is 17mm, the depth of the drill hole is 150mm, the length of the drill hole is the same as that of the smooth cylindrical rod of the dowel bar device 2, the interval between the drill holes is 100mm, the height of the drill hole from the bottom edge of the front side face of the right trapezoid table is 50mm, and the smooth cylindrical rod of the dowel bar device 2 is inserted into the drill hole and filled with asphalt filler through caulking.
As shown in fig. 3 and 4, the waterproof drainage device 3 is an FRP plate, the FRP plate is formed by connecting an upper FRP pore plate and a lower FRP pore plate in a vertical symmetrical manner, a row of through holes a penetrating up and down are correspondingly formed in the upper FRP pore plate and the lower FRP pore plate, an upper groove B and a lower groove C are respectively and uniformly formed in the lower surface of the upper FRP pore plate and the upper surface of the lower FRP pore plate, the upper groove B and the lower groove C are the same in size, are 10mm in width and 5mm in depth, correspond in position, and are spliced into a hollow cuboid concave channel.
As shown in fig. 1, the aperture of the through hole a is 17mm, the through holes a are spaced by 100mm, the number of the through holes a and the number of the drilled holes are 3, and the vertical part of the dowel bar device 2 is inserted into the through hole a and filled with asphalt filler through caulking.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (7)
1. An asphalt pavement structure based on a cement pavement comprises a cement surface layer (1), a dowel bar device (2), a waterproof drainage device (3) and an asphalt surface layer (4), and is characterized in that the upper part of the cement surface layer (1) is a right-angle trapezoid table, the lower part of the cement surface layer is a cube, the front side of the right-angle trapezoid table is a chamfer angle of 65 degrees, the middle part of the front side of the right-angle trapezoid table is transversely provided with a row of drilling holes, the bottom of the front side of the right-angle trapezoid table is transversely provided with a channel, the dowel bar device (2) is an '￢' -shaped FRP reinforcing bar, the front part of the horizontal section of the '￢' -shaped FRP reinforcing bar is inserted into the drilling holes, the front end of the waterproof drainage device (3) is inserted into the channel, the waterproof drainage device (3) is provided with a row of through holes A which penetrate up and down, the through the vertical sections of the '￢' -shaped FRP reinforcing, waterproof drainage device (3) erect in the side of cement surface course (1), pitch surface course (4) are pour in cement surface course (1), dowel steel device (2) and waterproof drainage device (3) top.
2. The asphalt pavement structure based on cement pavement according to claim 1, characterized in that: cement surface course (1) is laid in semi-rigid basic unit (5) top, rigidity basic unit (6) top is laid in pitch surface course (4), subbase (7) top is all laid in semi-rigid basic unit (5) and rigidity basic unit (6).
3. The asphalt pavement structure based on cement pavement according to claim 1, characterized in that: the front part of the horizontal section of the dowel bar device (2) is a smooth cylindrical rod and is inserted into a drilled hole, the rear part of the horizontal section of the dowel bar device (2) and the vertical part are threaded rods, and the vertical part is inserted into a through hole A fixed in the waterproof drainage device (3).
4. A bituminous pavement structure based on cement pavements according to claim 3, characterized in that: the horizontal section and the vertical section of dowel bar device (2) external diameter are 16mm, and the total length of the horizontal section of dowel bar device (2) is 300mm, wherein smooth cylinder rod length is 150mm, and the vertical portion of dowel bar device (2) is 50 mm.
5. An asphalt pavement structure based on cement pavement according to claim 1 or 4, characterized in that: the diameter of the drilled hole is 17mm, the depth of the drilled hole is 150mm, the length of the drilled hole is the same as that of the smooth cylindrical rod of the dowel bar device (2), the interval between every two drilled holes is 100mm, the height of the drilled hole from the bottom edge of the front side face of the right trapezoid table is 50mm, and the smooth cylindrical rod of the dowel bar device (2) is inserted into the drilled hole and filled with asphalt filler in a caulking manner.
6. The asphalt pavement structure based on cement pavement according to claim 1, characterized in that: waterproof drainage device (3) are the FRP board, the width of FRP board is 250mm, and thickness is 15mm, the FRP board is formed by last FRP orifice plate and lower FRP orifice plate longitudinal symmetry connection, it sets up one row of through-hole A that runs through from top to bottom to correspond on last FRP orifice plate and the lower FRP orifice plate, upper groove B and lower groove C have transversely evenly been seted up respectively to the lower surface of going up the FRP orifice plate and the upper surface of lower FRP orifice plate, upper groove B and lower groove C size are the same, are width 10mm, degree of depth 5mm, and the position corresponds, and the concatenation is hollow cuboid concave channel.
7. The asphalt pavement structure based on cement pavement according to claim 1, characterized in that: the diameter of the through holes A is 17mm, the interval between the through holes A is 100mm, the number of the through holes A is the same as that of drilled holes, and the vertical parts of the dowel bar devices (2) are inserted into the through holes A and are filled and installed through asphalt filler caulking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873494.2U CN210262550U (en) | 2019-06-12 | 2019-06-12 | Asphalt pavement structure based on cement pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873494.2U CN210262550U (en) | 2019-06-12 | 2019-06-12 | Asphalt pavement structure based on cement pavement |
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| Publication Number | Publication Date |
|---|---|
| CN210262550U true CN210262550U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920873494.2U Expired - Fee Related CN210262550U (en) | 2019-06-12 | 2019-06-12 | Asphalt pavement structure based on cement pavement |
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| CN (1) | CN210262550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176813A (en) * | 2020-09-23 | 2021-01-05 | 江苏港通路桥集团有限公司 | Asphalt concrete pavement maintenance structure and method thereof |
-
2019
- 2019-06-12 CN CN201920873494.2U patent/CN210262550U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176813A (en) * | 2020-09-23 | 2021-01-05 | 江苏港通路桥集团有限公司 | Asphalt concrete pavement maintenance structure and method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 |
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| CF01 | Termination of patent right due to non-payment of annual fee |