CN114808594A - An asphalt pavement repair structure - Google Patents

Abstract

The invention discloses an asphalt pavement repairing structure, comprising a pavement repair groove opened on the upper part of a pit on the asphalt pavement surface, the depth of the road repair groove is higher than the depth of the pit, and the bottom of the pit is located at the bottom of the pit. In the middle of the bottom surface of the road surface repair groove, the bottom surface of the road surface repair groove is a plane; the bottom of the road surface repair groove is laid with a repair frame. The beneficial effects are: when the asphalt pavement is repaired, it is not necessary to completely excavate the road surface and roadbed materials in the pit, the repairing operation is more convenient and fast, and the safety is good; the transportation cost of waste materials is reduced; after the road surface is repaired, the repair frame can be used as a road surface Repair the support of the upper filler in the groove, thereby improving the deformation resistance of the asphalt filler after road surface repair, and can isolate the upper filler from the pavement foundation under the pit, reducing the influence of the pavement foundation defect on the repaired filler, thereby avoiding pits The top is dented again, and the repair effect is good.

Description

An asphalt pavement repair structure

technical field

The invention relates to the technical field of pavement repair, in particular to an asphalt pavement repair structure.

Background technique

As a typical flexible pavement, asphalt pavement is prone to accumulated deformation under repeated loads because of its large deflection and low flexural strength under load. Among them, pits are one of the most common failure states on asphalt pavements. There are many reasons for the formation of pits. The most common reason is that the asphalt pavement is unevenly paved, resulting in insufficient aggregate compaction in some pavement areas. and flatness, but it is prone to dents after the vehicle is rolled, and eventually deeper dents are formed. The conventional pit repair method is direct filling, that is, the asphalt mixture is directly filled in the pit and rolled to form. When repairing by this method, the subgrade structure is easily unstable due to the long-term infiltration of rainwater under some pits. , After directly filling and rolling, the structural state of the lower layer of the pavement is not improved, and it is easy to dent again after the vehicle is rolled; it can also be repaired by replacing the pavement material, that is, the pavement directly at the pit is opened with a diameter larger than the pit diameter. trough, and dig out the asphalt mixture in the trough and the unstable pavement foundation, and then fill the trough with the asphalt mixture. The risk of instability of the pavement around the groove and the pavement foundation may be caused. Based on this, the applicant proposes an asphalt pavement repair structure with convenient operation, good safety and low cost.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an asphalt pavement repair structure in order to solve the above problems. The preferred technical solution among the technical solutions provided by the present invention has the following technical effects: convenient operation, low repair cost, and good safety. Elaborated below.

For achieving the above object, the invention provides the following technical solutions:

An asphalt pavement repair structure provided by the present invention includes a pavement repair groove opened on the upper part of a pit on the surface of the asphalt pavement, the depth of the pavement repair groove is higher than the depth of the pit, and the bottom of the pit is located at the bottom of the pit. The middle of the bottom surface of the road surface repair groove, and the bottom surface of the road surface repair groove is a plane;

A repair frame is laid on the bottom of the road repair groove, and the vertical projection of the repair frame completely covers the pit;

The inner side of the repair frame is provided with a plurality of positioning feet, the positioning feet are evenly distributed in the inner circumferential direction of the repair frame, and the lower part of the positioning feet extends vertically downward from the bottom surface of the repair frame, The circumferential direction of the positioning foot is provided with an overflow portion of the filling seam.

Preferably, the repair frame is composed of an inner grid frame and an outer frame body, the inner grid frame is arranged on the inner side of the outer frame body, and the edge of the inner grid frame is welded with the inner wall of the outer frame body. .

Preferably, the height of the inner mesh frame is the same as the height of the outer frame body, and the inner mesh frame includes a flat plate portion and a lower support portion, and the lower support portion is vertically arranged in the middle of the bottom of the flat plate portion, The sum of the height of the lower support part and the height of the flat plate part is consistent with the height of the outer frame body.

Preferably, the lower support portion is a vertical plate portion with a thickness consistent with the thickness of the flat plate portion, and both the flat plate portion and the vertical plate portion are welded and fixed to the inner edge of the outer frame body.

Preferably, the outer frame body is an annular structure, and is made by welding a steel strip with a uniform thickness end to end, and the thickness of the outer frame body is greater than the thickness of the flat plate portion.

Preferably, the locating legs are welded and fixed to the inner wall of the outer frame body, and the top of the positioning legs is provided with a caulking hole that communicates with the overflow portion of the caulking.

Preferably, the overflow portion of the potting seam is a plurality of potting grooves, the potting grooves extend downward from the middle of the positioning leg to the bottom of the positioning leg, and the potting grooves are evenly distributed on the bottom of the positioning leg. The circumferential direction of the positioning foot.

Preferably, the width of the potting groove is 3mm-5mm.

Preferably, the overflow part of the filling seam is a plurality of overflow holes, and the overflow holes are uniformly formed in the circumferential direction of the lower part of the positioning stud.

Preferably, the diameter of the overflow hole is 5mm-10mm.

To sum up, the beneficial effects of the present invention are as follows: 1. When the asphalt pavement is repaired, there is no need to completely excavate the road surface and subgrade materials in the pit, and the repair operation is more convenient and fast, and the safety is good;

2. After the pavement repair groove is opened on the road surface, the asphalt material waste generated by the pit grooving can be filled into the lower part of the pit, which reduces the transportation cost of the waste;

3. After the road surface is repaired, the repair frame can be used as the support for the upper filler of the road surface repair groove, thereby improving the anti-deformation performance of the asphalt filler after the road surface repair, and can isolate the upper filler from the pavement foundation under the pit, reducing the pavement foundation. The effect of defects on the repaired filler, so as to avoid the depression above the pit, and the repair effect is good.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the top view structure schematic diagram of the present invention;

Fig. 3 is the bottom view structure schematic diagram of the present invention;

Fig. 4 is the enlarged structural representation of A part in Fig. 3;

Fig. 5 is the structural representation of the initial repair state of the present invention;

FIG. 6 is a schematic structural diagram of the repaired state of the present invention.

The reference numerals are explained as follows:

1. Repair frame; 11. Outer frame body; 12. Inner grid frame; 12a, flat plate part; 12b, vertical plate part; 2. Positioning foot; 3. Filling overflow part; 4. Filling hole; 5. Pavement repair groove; 6, pit; 7, footing groove.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-6, the present invention provides an asphalt pavement repair structure, including a pavement repair groove 5 opened on the upper part of a pit 6 on the asphalt pavement surface, and the depth of the road repair groove 5 is higher than that of the pit. The depth of the pit 6, and the bottom of the pit 6 is located in the middle of the bottom surface of the road surface repair groove 5, and the bottom surface of the road surface repair groove 5 is a plane;

The bottom of the road repair groove 5 is laid with a repair frame 1, and the vertical projection of the repair frame 1 completely covers the pit 6; After the asphalt mixture is filled inside and compacted, it acts as a pressure-bearing structure above the pit 6 to weaken the load acting on the bottom of the pit 6, thereby preventing the pit 6 from continuing to deform;

The inner side of the repair frame 1 is provided with a plurality of positioning feet 2, and the positioning feet 2 are mostly the horizontal limit of the repair frame 1 and the support of the lower part, which are used to improve the stability of the repair frame 1. The positioning feet 2 Evenly distributed in the inner circumferential direction of the repair frame 1, and the lower part of the positioning inlay 2 extends vertically downwards out of the bottom surface of the repair frame 1, and the circumferential direction of the positioning inlay 2 is provided with a gap overflow Section 3. After the repair frame 1 and the positioning foot 2 are positioned inside the road repair groove 5, the positioning foot 2 can be filled with asphalt slurry, and the combination of the asphalt slurry and the inner wall of the foot groove 7 can improve the positioning and repair The stability of the frame 1 is improved, so as to avoid the displacement of the repair frame 1 after bearing pressure when the vehicle rolls the repair position after the road surface is repaired, and the stability of the position of the repair frame 1 is improved.

When in use, first open a road surface repair groove 5 on the upper part of the pit 6 on the asphalt pavement. The road surface repair groove 5 is a circular groove, and it should be ensured that the upper edge of the pit 6 is completely within the range of the road surface repair groove 5; after the groove, the road surface is leveled. Repair the bottom of the groove 5 and open a foot groove 7. The depth of the foot groove 7 is 210mm-15mm lower than the positioning foot to prevent the foot from lifting. After the groove is opened, the pavement material can be cleaned, or the cleaned foot can be used. The pavement material fills the lower space of the pit 6; place the repair frame 1, insert the positioning foot 2 into the foot groove 7, and lay the repair frame 1 on the bottom of the road repair groove 5, so that the road repair groove 5 completely covers the concave. The lower edge of the pit 6; fill with asphalt slurry, fill the hot asphalt slurry into the positioning foot 2 and the pit 6, and the hot asphalt slurry overflows along the overflow part 3 of the filling joint and combines with the inner wall of the foot groove 7, and at the same time The asphalt slurry poured into the pit 6 can be combined with the filler therein to form a stable structure; finally, the road repair groove 5 is filled with new asphalt mixture and compacted to complete the repair operation.

The repair frame 1 is composed of an inner grid frame 12 and an outer frame body 11 . The inner grid frame 12 is arranged on the inner side of the outer frame body 11 , and the edge of the inner grid frame 12 is connected to the outer frame body 11 . The inner wall of the frame is welded and matched; the height of the inner grid 12 is consistent with the height of the outer frame body 11, and the inner grid 12 includes a flat plate portion 12a and a lower support portion, and the lower support portion is vertically arranged on the In the middle of the bottom of the flat plate portion 12a, the sum of the height of the lower support portion and the height of the flat plate portion 12a is the same as the height of the outer frame body 11; the thickness of the lower support portion is the same as the thickness of the flat plate portion 12a The vertical plate portion 12b is welded and fixed to the inner edge of the outer frame body 11; the flat plate portion 12a and the vertical plate portion 12b form a T-shaped structure, which can improve the vertical Therefore, after the inner grid 12 is used as the bearing structure above the pit 6, when bearing the vertical traffic load, the load can be distributed to the groove bottom of the road repair groove 5 and the positioning feet 2 to avoid pits. 6 Deformed under pressure again;

The outer frame body 11 is an annular structure, and is made by welding a steel strip with a uniform thickness from end to end. The thickness of the outer frame body 11 is greater than the thickness of the flat plate portion 12a; 12 After bearing the vertical load, the deformation will tend to the center, so the thickness of the outer frame body 11 should be greater than the thickness of the plate part 12a to ensure its structural stability. Under normal conditions, the outer frame body 11 can be 10mm thick. -15mm steel plate material;

The positioning feet 2 are welded and fixed to the inner wall of the outer frame body 11, and the top of the positioning feet 2 is provided with a seam filling hole 4 that communicates with the filling seam overflow part 3; the filling seam overflow part 3 is a plurality of potting grooves, the potting grooves extend downward from the middle of the positioning leg 2 to the bottom of the positioning leg 2, and the potting grooves are evenly distributed on the positioning legs 2. Circumferential; the width of the potting groove is 3mm-5mm; the groove-shaped potting overflow part 3 can be used to avoid blockage, and when pouring hot asphalt slurry, it can ensure that the asphalt slurry enters the embedding through the potting hole 4 In foot slot 7;

The overflow part 3 of the filling seam is a plurality of overflow holes, and the overflow holes are uniformly formed in the lower circumferential direction of the positioning inserts 2; the diameter of the overflow holes is 5mm-10mm, and the overflow holes pass through the overflow holes. The overflowing hot asphalt slurry has more connection points with the positioning studs 2 , which can make the contact between the outer wall of the positioning studs 2 and the stud grooves 7 more closely.

By adopting the above structure, when the asphalt pavement is repaired, it is not necessary to completely excavate the road surface and roadbed materials in the pit 6, the repair operation is more convenient and quick, and the safety is good; after the road surface repair groove 5 is opened on the road, the pit 6 can be opened. The asphalt material waste generated by the groove is filled into the lower part of the pit 6, which reduces the transportation cost of the waste; after the road surface is repaired, the repair frame 1 can be used as the support for the upper filler of the road surface repair groove 5, thereby improving the resistance of the asphalt filler after the road surface repair. Deformation performance, and can isolate the upper filler from the pavement foundation below the pit 6, reducing the influence of the pavement foundation defect on the repaired filler, thereby avoiding the depression above the pit 6 again, and the repair effect is good; more suitable for small areas Deep pit repair.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. The asphalt pavement repairing structure is characterized by comprising a pavement repairing groove (5) arranged at the upper part of a pit (6) on the surface of an asphalt pavement, wherein the depth part of the pavement repairing groove (5) is higher than the depth of the pit (6), the bottom of the pit (6) is positioned in the middle of the bottom surface of the pavement repairing groove (5), and the bottom surface of the pavement repairing groove (5) is a plane;

a repairing frame (1) is laid at the bottom of the pavement repairing groove (5), and the vertical projection of the repairing frame (1) completely covers the pit (6);

the repairing frame is characterized in that a plurality of positioning embedded feet (2) are arranged on the inner side of the repairing frame (1), the positioning embedded feet (2) are uniformly distributed in the circumferential direction of the inner side of the repairing frame (1), the lower portion of each positioning embedded foot (2) vertically extends downwards to form the bottom surface of the repairing frame (1), and a pouring overflow portion (3) is arranged in the circumferential direction of each positioning embedded foot (2).

2. The asphalt pavement restoration structure according to claim 1, characterized in that: repair frame (1) by interior net rack (12) and outer support body (11) constitute, interior net rack (12) set up in the inboard of outer support body (11), just the border of interior net rack (12) with the inner wall welding cooperation of outer support body (11).

3. The asphalt pavement restoration structure according to claim 2, characterized in that: the height of interior net rack (12) with the highly uniform of outer support body (11), and this interior net rack (12) include dull and stereotyped portion (12a) and lower carriage, the lower carriage vertical set up in the middle of the bottom of dull and stereotyped portion (12a), the height of lower carriage with the highly sum of dull and stereotyped portion (12a) with the highly uniform of outer support body (11).

4. The asphalt pavement repairing structure according to claim 3, characterized in that: the lower supporting part is a vertical plate part (12b) with the thickness consistent with that of the flat plate part (12a), and the flat plate part (12a) and the vertical plate part (12b) are fixedly welded with the inner edge of the outer frame body (11).

5. The asphalt pavement restoration structure according to claim 3, characterized in that: outer support body (11) are the ring structure, and are made by the even steel band end to end welding of a thickness, the thickness of outer support body (11) is greater than the thickness of pallet portion (12 a).

6. The asphalt pavement restoration structure according to claim 2, characterized in that: the positioning caulking pins (2) are welded and fixed with the inner wall of the outer frame body (11), and seam filling holes (4) communicated with the seam filling overflow part (3) are formed in the tops of the positioning caulking pins (2).

7. The asphalt pavement restoration structure according to claim 6, characterized in that: pouring seam overflow portion (3) are many encapsulating grooves, encapsulating groove certainly the middle part downwardly extending of location fillet foot (2) to the bottom of location fillet foot (2), encapsulating groove equipartition is in the circumference of location fillet foot (2).

8. The asphalt pavement restoration structure according to claim 7, characterized in that: the width of the encapsulating groove is 3mm-5 mm.

9. The asphalt pavement restoration structure according to claim 6, characterized in that: the crack pouring overflow part (3) is provided with a plurality of overflow holes, and the overflow holes are uniformly formed in the circumferential direction of the lower part of the positioning embedded foot (2).

10. The asphalt pavement restoration structure according to claim 9, characterized in that: the diameter of the overflow hole is 5mm-10 mm.

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