CN111608058A - A kind of pavement reinforcement structure and method - Google Patents

Abstract

The invention discloses a pavement reinforcing structure and a method, wherein the structure comprises a three-dimensional net-shaped reinforcing body, the three-dimensional net-shaped reinforcing body comprises a plurality of inclined piles, the bottom of one inclined pile in the inclined piles is connected with the bottom of at least one inclined pile in the rest inclined piles, the bottom ends of the inclined piles connected with the bottoms are expanded anchoring heads, and the top of each inclined pile can be constructed with an upper flange clamping plate; the method comprises the following steps: firstly, drilling an inclined pile hole; secondly, drilling and reaming; thirdly, filling the perfusion body; and fourthly, completing hole expansion. The invention forms an expanded anchoring head by utilizing the intersection of the bottoms of a plurality of inclined piles, can construct an upper flange clamping plate with expanded size at the top of the inclined pile, forms a three-dimensional net-shaped reinforcing body by utilizing the inclined pile, clamps and reinforces the layer to be repaired of the pavement by the expanded anchoring head of the inclined pile and the corresponding upper flange clamping plate, effectively connects and bears the cracked or broken layer to be repaired of the pavement, and extends and expands the three-dimensional net-shaped reinforcing body in any mode to realize the comprehensive reinforcement of the layer to be repaired of the pavement, thereby having good reinforcing effect, less material consumption and short construction period.

Description

A kind of pavement reinforcement structure and method

technical field

The invention belongs to the technical field of reinforcement of pavement base and sub-base, and in particular relates to a pavement reinforcement structure and method.

Background technique

Cement concrete pavement refers to the pavement with cement concrete as the main material as the surface layer, referred to as concrete pavement. Also known as rigid pavement, commonly known as white pavement, it is an advanced pavement. The concrete upper layer is composed of concrete panels of a certain thickness. Asphalt pavement refers to various types of pavements paved with road asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving granules to resist the damage to the pavement caused by driving and natural factors, making the pavement smooth and less dusty and durable. Some defects and deficiencies, including reflection cracks and water damage, are difficult to solve, which bring great harm to the semi-rigid base asphalt pavement structure, especially the semi-rigid asphalt pavement structure in my country, with a design life of 15 years. A large number of old pavements are crushed or milled, and the base and surface layers are re-laid. The workload is heavy, the traffic is difficult to maintain during the construction period, and a large amount of construction waste is generated that needs to be stacked. The existing semi-rigid base asphalt pavement structures are mostly repaired by using Vertically drilling holes into the semi-rigid base at the bottom of the asphalt surface to inject adhesives such as epoxy resin to glue the cracks, which is not only expensive, but also can only be glued to the cracks of the roadbed, and the bearing capacity of the road surface after repair is difficult to guarantee.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a pavement reinforcement structure in view of the above-mentioned deficiencies in the prior art, which has a novel and reasonable design, utilizes the intersection of the bottoms of a plurality of inclined piles to form an enlarged anchoring head, and constructs a size expansion structure on the top of the inclined piles. The upper flange splint of the diameter is used to clamp and reinforce the pavement to be repaired by the enlarged anchoring head and the corresponding upper flange splint. The three-dimensional mesh reinforcement can be extended and expanded in any way to realize the comprehensive reinforcement of the pavement to be repaired.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a pavement reinforcement structure, which is characterized in that: it includes a three-dimensional network reinforcement body for integrally reinforcement of cracks or broken areas in the pavement to be repaired layer, so The three-dimensional mesh reinforcement body includes a plurality of inclined piles, one inclined pile in the plurality of inclined piles is connected with at least one inclined pile in the remaining inclined piles, and the bottom of one inclined pile in the plurality of inclined piles is connected with the remaining inclined piles. The bottom of at least one inclined pile in the inclined piles is connected, and the bottom ends of the plurality of inclined piles connected to the bottom are enlarged anchoring heads, and the enlarged anchoring heads are located on the lower side of the road surface to be repaired and at the bottom of the crack or broken area. The pavement to be repaired layer is a cement pavement top layer, a pavement base and/or a pavement sub-base, the pavement base is an asphalt pavement base or a cement pavement base, and the pavement sub-base is an asphalt pavement sub-base or a cement pavement sub-base.

The above-mentioned pavement reinforcement structure is characterized in that: the top of the inclined pile is constructed with an upper flange splint, and the upper flange splint is located on the upper side of the pavement to be repaired and at the top of the crack or broken area.

The above-mentioned pavement reinforcement structure is characterized in that the cross-sectional dimension of the upper flange splint is larger than the cross-sectional dimension of the inclined pile.

The above-mentioned pavement reinforcement structure is characterized in that: the upper flange splint, the inclined pile and the enlarged anchoring head are poured into one body.

The above-mentioned pavement reinforcement structure is characterized in that: the three-dimensional mesh reinforcement is a micro-expanded cement three-dimensional mesh reinforcement or a polymer resin three-dimensional mesh reinforcement.

At the same time, the invention also discloses a pavement reinforcement method with simple method steps and reasonable design, which is characterized in that the method comprises the following steps:

Step 1. Drilling inclined pile holes: Drill a plurality of inclined pile holes at multiple designated positions on the pavement layer. interconnected;

The bottom of one inclined pile hole in the plurality of inclined pile holes is communicated with the bottom of at least one inclined pile hole in the remaining inclined pile holes;

Step 2. Drilling and reaming: Drilling and reaming the positions of several inclined pile holes on the pavement layer respectively, the reaming holes are communicated with the corresponding inclined pile holes, and the size of the reaming holes is larger than the size of the inclined pile holes;

Step 3, filling the pouring body: filling the pouring body in the inclined pile hole until the pouring body overflows into the reaming hole, and after the pouring body is solidified, the solidified pouring body forms a three-dimensional mesh reinforcement body with an integrated structure;

Wherein, the pouring body forms an enlarged anchoring head at the bottom end of a plurality of inclined pile holes connected at the bottom, the pouring body forms an upper flange splint in several reaming holes, and the pouring body forms inclined piles in the inclined pile holes, and the expanding The anchoring head is located on the lower side of the pavement to be repaired and at the bottom of the crack or broken area, the upper flange splint is located on the upper side of the pavement to be repaired and at the top of the crack or broken area, and the anchoring head and the corresponding upper flange splint are clamped Reinforcing the pavement to be repaired layer to realize the overall reinforcement of the pavement to be repaired layer;

Step 4. Completion and reaming: Complement the empty space in several reaming holes to complete the reinforcement of the road surface;

When the pavement is asphalt pavement, use asphalt to fill the empty space in several reaming holes to complete the reinforcement of the asphalt pavement;

When the pavement is a cement pavement, the cement filling body is used to fill the empty space in several reaming holes to complete the reinforcement of the cement pavement.

The above method is characterized in that: in step 1, an inclined hole drilling machine is used to drill the inclined pile hole.

The above method is characterized in that: in step 3, the infusion body is micro-expandable cement or polymer resin.

The above method is characterized in that: in step 2, the depth of the reaming hole is not less than the thickness of the upper flange splint.

Compared with the prior art, the present invention has the following advantages:

1. The reinforcement structure adopted in the present invention utilizes the intersection of the bottoms of a plurality of inclined piles to form an enlarged anchoring head, which reinforces the pavement to be repaired, and the enlarged anchoring head extends into the bottom of the pavement to be repaired to effectively perform effective repair on the broken pavement to be repaired. The expansion anchoring head is more stable in structure, stronger in bearing capacity, and simple in construction. It can pass through the pavement layer to the pavement layer to be repaired. A plurality of inclined piles are connected as a whole, and all the inclined piles form a three-dimensional network reinforcement body to comprehensively reinforce the pavement to be repaired to ensure that the repair strength of the pavement to be repaired meets the requirements and is convenient for popularization and use.

2. The reinforcing structure adopted in the present invention constructs an upper flange splint with an enlarged diameter on the top of the inclined pile, and uses the enlarged anchor head and the corresponding upper flange splint to clamp and reinforce the pavement to be repaired. The reinforcement strength is reliable and can be used. Long service life, avoid the problem of short reinforcement life caused by injecting adhesive into the base layer at the bottom of the asphalt surface due to vertical discrete drilling. For example, epoxy resin adhesive glues cracks, and all inclined piles form a three-dimensional mesh reinforcement. , Effectively connect the fractured or broken pavement layer to be repaired, the three-dimensional mesh reinforcement can extend and expand in any way, and the structure changes flexibly, realizing comprehensive reinforcement of the pavement layer to be repaired, less consumables, and short construction period. Small impact.

3. The design of the present invention is novel and reasonable, and the inclined pile has a certain self-expansion property, which compensates for the shrinkage of concrete, prevents and cures concrete cracks, improves concrete performance, is reliable and stable, and has good use effect.

4. The method adopted in the present invention has simple steps. First, the inclined pile holes are drilled to determine the reinforcement position, and a plurality of inclined pile holes are connected with each other. For the stratum strength of the pavement to be repaired, the oblique piles constructed by the oblique holes intersect to form an enlarged head structure, avoiding the use of a special variable-diameter screw drilling machine to obtain the enlarged head pile holes, small changes to the original pavement thickness, and fast construction. , to avoid a large number of broken old roads, re-laying the base and surface layers, resulting in a large workload, difficult to maintain traffic during construction, and a large amount of construction waste that needs to be stacked, low cost, and effective reinforcement for cracks or broken areas in the base layer, After the pavement is repaired, the stress effect is good, and it is easy to popularize and use.

To sum up, the design of the present invention is novel and reasonable, and the enlarged anchoring head is formed by the intersection of the bottoms of a plurality of inclined piles, and an upper flange splint with an enlarged diameter is constructed on the top of the inclined pile, and the enlarged anchoring head and the corresponding upper flange splint clamp are used. It supports the reinforcement of the pavement to be repaired, and all the inclined piles form a three-dimensional mesh reinforcement, which effectively connects the fractured or broken pavement to be repaired, and the three-dimensional mesh reinforcement extends in any way to realize the pavement to be repaired. The comprehensive reinforcement, the reinforcement effect is good, the consumables are few, the construction period is short, and it is easy to popularize and use.

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is a schematic structural diagram of the random distribution of enlarged anchoring heads in the structure adopted in the present invention.

FIG. 2 is a schematic structural diagram of the expanded anchoring head array distribution in the structure adopted in the present invention.

Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2 (the upper flange plywood is located in the pavement layer and the pavement to be repaired layer is the pavement base layer).

FIG. 4 is a cross-sectional view of FIG. 2 A-A (the upper flange plywood is located on the top of the pavement base and the pavement to be repaired is the pavement base).

Fig. 5 is a cross-sectional view taken along line A-A of Fig. 2 (the upper flange plywood is located in the pavement layer and the pavement to be repaired layer is the pavement sub-base).

6 is a cross-sectional view of FIG. 2 A-A (the upper flange plywood is located at the top of the pavement base and the pavement to be repaired is the pavement sub-base).

Fig. 7 is a cross-sectional view taken along line A-A of Fig. 2 (the upper flange plywood is located in the pavement layer and the pavement to be repaired layer is the pavement sub-base and the pavement sub-base).

8 is a cross-sectional view of FIG. 2 A-A (the upper flange plywood is located at the top of the pavement base and the pavement to be repaired layers are the pavement sub-base and the pavement sub-base).

9 is a schematic structural diagram of selectively constructing upper flange splints on the top of the inclined pile according to the present invention.

FIG. 10 is a schematic structural diagram of selectively constructing upper flange splints and adding vertical reinforcing piles on the top of the inclined pile according to the present invention.

11 is a schematic diagram of the panel reinforcement structure of the cement pavement of the present invention.

FIG. 12 is a schematic diagram of the panel reinforcement structure of adding vertical reinforcement piles to the cement pavement of the present invention.

FIG. 13 is a block flow diagram of the method of the present invention.

Explanation of reference numbers:

1—Subgrade; 2—Pavement layer; 4-1—Pavement base;

4-2—pavement sub-base; 7—inclined pile; 8—reaming hole;

9 - Upper flange splint.

Detailed ways

As shown in FIG. 1 , a pavement reinforcement structure according to the present invention includes a three-dimensional mesh reinforcement body for integrally reinforcing cracks or broken areas in the pavement to be repaired layer, the three-dimensional mesh reinforcement body Including a plurality of inclined piles 7, one inclined pile 7 in the plurality of the inclined piles 7 is connected with at least one inclined pile 7 in the remaining inclined piles 7, and the bottom of one inclined pile 7 in the plurality of the inclined piles 7 is connected with the remaining inclined piles 7. The bottom of at least one inclined pile 7 in the inclined piles 7 is connected, and the bottom ends of the plurality of inclined piles 7 connected at the bottom are enlarged anchoring heads, and the enlarged anchoring heads are located on the lower side of the road surface to be repaired and at the bottom of the crack or broken area. , the pavement to be repaired layer is a cement pavement panel layer, a pavement base 4-1 and/or a pavement sub-base 4-2, the pavement base 4-1 is an asphalt pavement base or a cement pavement base, and the pavement sub-base 4-1 -2 is the sub-base of asphalt pavement or the sub-base of cement pavement.

In this embodiment, an upper flange splint 9 is constructed on the top of the inclined pile 7, and the upper flange splint 9 is located on the upper side of the road surface to be repaired and at the top of the crack or broken area.

It should be noted that the enlarged anchoring head is formed by the intersection of the bottoms of multiple inclined piles to reinforce the pavement to be repaired, and the enlarged anchoring head extends into the bottom of the pavement to be repaired to effectively connect and support the fractured pavement to be repaired. , the construction is simple and fast, avoiding the use of variable diameter drill bits to drill the variable diameter pile holes, the enlarged anchor head structure is more stable, the bearing capacity is stronger, and the construction is simple, through the pavement layer to the pavement to be repaired. The inclined piles are connected as a whole, and all the inclined piles form a three-dimensional network reinforcement body to comprehensively reinforce the pavement to be repaired to ensure that the repair strength of the pavement to be repaired meets the requirements; an enlarged upper flange can be constructed on the top of the inclined piles The splint, according to the design requirements, selectively construct the upper flange splint with enlarged diameter on the top of the inclined pile, as shown in Figure 9; The upper flange plywood clamps and reinforces the pavement to be repaired. The reinforcement strength is reliable and the service life is long. It avoids the problem of short reinforcement life due to the injection of adhesives into the base layer at the bottom of the asphalt surface due to vertical discrete drilling, such as epoxy resin. The adhesive glues the cracks, and all the inclined piles form a three-dimensional network reinforcement, which effectively connects the fractured or broken pavement to be repaired. The comprehensive reinforcement of the pavement to be repaired has few consumables, short construction period and little impact on road traffic.

It should be noted that, according to the design requirements, several enlarged anchoring head positions can also be drilled vertically, and a vertical reinforcing pile can be added to form a three-dimensional mesh reinforcing body interwoven with vertical reinforcing piles and inclined piles 7, as shown in Figures 10 and 10. Figure 12.

In actual construction, it is preferable to design the distribution of the enlarged anchoring heads with the projected design position of each enlarged anchoring head on the road surface as the array structure design, and drill and build four corners of the bottom rubber from the four corners of each enlarged anchoring head located at the projected design position of the road surface. A sloping pile hole, as shown in Figure 2.

When the pavement to be repaired is the pavement base 4-1, the inclined pile holes are drilled through the pavement base 4-1, the bottom ends of the inclined pile holes are located in the pavement base 4-2, and the bottom ends of the plurality of inclined piles 7 connected at the bottom are The enlarged anchor head stays in the pavement sub-base 4-2, as shown in Figures 3 and 4, the upper flange plywood 9 can be constructed in the pavement layer 2, as shown in Figure 3; the upper flange plywood 9 can also be constructed On top of the pavement base layer 4-1, as shown in Figure 4.

When the pavement to be repaired is the pavement sub-base 4-2, the inclined pile holes are drilled through the pavement base 4-1 and the pavement sub-base 4-2. The enlarged anchoring head at the bottom end of 7 stays in the roadbed 1, as shown in Figures 5 and 6, the upper flange splint 9 can be constructed in the pavement layer 2, as shown in Figure 5; the upper flange splint 9 can also be constructed On top of the pavement base layer 4-1, as shown in Figure 6.

When the pavement to be repaired layer is located in the pavement base 4-1 and also in the pavement subbase 4-2, for the pavement to be repaired layer located in the pavement base 4-1, the inclined pile holes are drilled through the pavement base 4-1, and the inclined pile holes are drilled through the pavement base 4-1. The bottom end of the pile hole is located in the pavement sub-base 4-2, and the enlarged anchoring heads at the bottom ends of the plurality of inclined piles 7 connected at the bottom stay in the pavement sub-base 4-2; the pavement to be repaired layer is located in the pavement sub-base 4-2. 2, the inclined pile holes penetrate the pavement base 4-1 and the pavement subbase 4-2, the bottom ends of the inclined pile holes are located in the subgrade 1, and the enlarged anchoring heads at the bottom ends of the plurality of inclined piles 7 connected at the bottom stay at the base 4-2. In the subgrade 1, as shown in Figures 7 and 8, the upper flange plywood 9 can be constructed in the pavement layer 2, as shown in Figure 7; the upper flange plywood 9 can also be constructed on the top of the pavement base 4-1, as shown in Figure 7 8 shown.

When the pavement to be repaired is the cement pavement panel layer, the pavement layer 2 is the cement pavement panel layer, the inclined pile holes are drilled through the cement pavement panel layer, the bottom ends of the inclined pile holes are located in the cement pavement base layer, and the bottoms are connected with a plurality of inclined piles The enlarged anchoring head at the bottom of 7 stays in the cement pavement base, as shown in Figure 10. In view of the cracks in the cement pavement panel layer, the enlarged anchor head in the three-dimensional mesh reinforcement is constructed along the length extension direction of the panel crack of the cement pavement. The anchoring head and the corresponding upper flange splint clamp and reinforce the panel of the cement pavement, so as to realize the comprehensive reinforcement of the crack of the panel of the cement pavement.

In this embodiment, the cross-sectional size of the upper flange plate 9 is larger than the cross-sectional size of the inclined pile 7 .

It should be noted that the cross-sectional dimension of the upper flange splint 9 is larger than the cross-sectional dimension of the inclined pile 7, so that the upper flange splint 9 and the enlarged anchoring head can cooperate to clamp and reinforce the pavement to be repaired, and the reinforcement strength is reliable.

In this embodiment, the upper flange splint 9, the inclined pile 7 and the enlarged anchoring head are poured into one body.

In this embodiment, the three-dimensional mesh reinforcement is a micro-expanded cement three-dimensional mesh reinforcement or a polymer resin three-dimensional mesh reinforcement.

It should be noted that the micro-expandable cement three-dimensional mesh reinforcement body can adopt the AEC micro-expansion type cement three-dimensional mesh reinforcement body, but is not limited to the AEC micro-expansion type cement three-dimensional mesh reinforcement body, and the inclined pile has A certain self-expansion can make up for the shrinkage of concrete, prevent and cure concrete cracks, improve concrete performance, reliable and stable, and good in use. The polymer resin three-dimensional network reinforcement body can be AB-1 grouting resin three-dimensional network reinforcement body, but is not limited to AB-1 grouting resin three-dimensional network reinforcement body.

As shown in Figure 13, a pavement reinforcement method includes the following steps:

Step 1. Drilling inclined pile holes: Drill a plurality of inclined pile holes in multiple designated positions of the pavement layer 2 respectively. The pores are connected to each other;

The bottom of one inclined pile hole in the plurality of inclined pile holes is communicated with the bottom of at least one inclined pile hole in the remaining inclined pile holes;

In this embodiment, in step 1, an inclined hole drilling machine is used to drill the inclined pile hole.

Step 2. Drilling and reaming: Drill reaming holes 8 at the positions of several inclined pile holes on the pavement layer 2 respectively. The reaming holes 8 are communicated with the corresponding inclined pile holes, and the size of the reaming holes 8 is larger than that of the inclined piles. the size of the hole;

In this embodiment, in step 2, the depth of the reaming hole 8 is not less than the thickness of the upper flange plate 9 .

In actual construction, when the pavement is an asphalt pavement, the pavement layer 2 is an asphalt pavement layer; when the pavement is a cement pavement, the pavement layer 2 is a cement panel layer.

It should be noted that, firstly, the slanted pile holes are drilled to determine the reinforcement position. Multiple slanted pile holes are connected to each other. After drilling and reaming, the position of the upper flange splint is determined, and a three-dimensional mesh reinforcement is constructed to reinforce the stratum of the pavement to be repaired. Strength, the inclined piles constructed by the oblique perforation form the enlarged head structure through the intersection, avoiding the use of a special variable diameter screw drilling machine to obtain the enlarged head pile holes, the change of the original pavement thickness is small, the construction is fast, and a large number of broken old piles are avoided. Pavement, re-laying the base layer and surface layer, resulting in a large workload, difficult to maintain traffic during the construction period, resulting in a large amount of construction waste that needs to be stacked, low cost, effective reinforcement for cracks or broken areas in the base layer, and stress effect after pavement repair it is good.

Step 3. Filling the pouring body: filling the pouring body in the inclined pile hole until the pouring body overflows into the reaming hole 8. After the pouring body is solidified, the solidified pouring body forms a three-dimensional mesh reinforcement body with an integrated structure ;

Wherein, the pouring body forms an enlarged anchoring head at the bottom end of a plurality of inclined pile holes connected to the bottom, the pouring body forms an upper flange splint 9 in several reaming holes 8, and the pouring body forms inclined piles 7 in the inclined pile holes, The enlarged anchor head is located on the lower side of the road surface to be repaired and at the bottom of the crack or broken area, the upper flange splint 9 is located on the upper side of the road to be repaired layer and at the top of the crack or broken area, and the enlarged anchor head and the corresponding upper wing The edge splint 9 clamps and reinforces the pavement to be repaired layer, so as to realize the overall reinforcement of the pavement to be repaired layer;

In this embodiment, in step 3, the infusion body is micro-expandable cement or polymer resin.

Step 4. Completion and reaming: Complement the empty space in several reaming holes 8 to complete the reinforcement of the road surface;

When the pavement is an asphalt pavement, the free space in the several reaming holes 8 is filled with asphalt to complete the reinforcement of the asphalt pavement;

When the pavement is a cement pavement, the vacant space in the several reaming holes 8 is filled by using the cement filling body to complete the reinforcement of the cement pavement.

When there are only cracks in the pavement layer to be repaired, the enlarged anchoring head can be designed at the bottom of the crack along the direction of crack extension, and the inclined pile holes are driven from the pavement to the design position of the enlarged anchoring head, and a plurality of piles are poured through the pavement layer to the pavement to be repaired layer. The inclined piles are connected as a whole, and all the inclined piles form a three-dimensional network reinforcement body to comprehensively reinforce the pavement to be repaired, ensuring the stability of the force after the crack reinforcement.

The enlarged anchor head of the bottom end of the three-dimensional mesh reinforcing body of the invention extends into the bottom of the road surface to be repaired, and effectively connects the broken or broken pavement base. Realize the comprehensive reinforcement of the pavement base, less consumables, short construction period, little impact on road traffic, and easy to use in practical projects.

The above are only preferred embodiments of the present invention and do not limit the present invention. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of the program.

Claims (9)

1. a pavement reinforcement structure is characterized in that: comprise the three-dimensional mesh reinforcement body that carries out integral reinforcement to the crack in the pavement layer to be repaired or the broken zone, and the three-dimensional mesh reinforcement body comprises a plurality of inclined piles (7), one inclined pile (7) in the plurality of inclined piles (7) is connected with at least one inclined pile (7) in the remaining inclined piles (7), and one of the plurality of inclined piles (7) The bottom of the inclined pile (7) is connected with the bottom of at least one inclined pile (7) in the remaining inclined piles (7), and the bottom ends of the plurality of inclined piles (7) connected to the bottom are enlarged anchoring heads, and the enlarged anchoring heads It is located on the lower side of the pavement to be repaired and at the bottom of the crack or broken area. The base (4-1) is an asphalt pavement base or a cement pavement base, and the pavement subbase (4-2) is an asphalt pavement or a cement pavement base. 2. A pavement reinforcement structure according to claim 1, characterized in that: the top of the inclined pile (7) is constructed with an upper flange splint (9), and the upper flange splint (9) is located on the road surface to be repaired The upper side of the layer and at the top of the crack or fracture zone. 3. A pavement reinforcement structure according to claim 2, characterized in that: the cross-sectional dimension of the upper flange plate (9) is larger than the cross-sectional dimension of the inclined pile (7). 4. A pavement reinforcement structure according to claim 2, characterized in that: the upper flange splint (9), the inclined pile (7) and the enlarged anchoring head are poured into one body. 5 . The pavement reinforcement structure according to claim 1 , wherein the three-dimensional mesh reinforcement is a micro-expanded cement three-dimensional mesh reinforcement or a polymer resin three-dimensional mesh reinforcement. 6 . 6. A method for reinforcing the structure as claimed in claim 1, characterized in that: the method comprises the following steps: Step 1. Drilling inclined pile holes: Drill a plurality of inclined pile holes at multiple designated positions of the pavement layer (2), respectively, and the inclined pile holes extend through the pavement to be repaired and into the bottom of the pavement to be repaired. The inclined pile holes are connected with each other; The bottom of one inclined pile hole in the plurality of inclined pile holes is communicated with the bottom of at least one inclined pile hole in the remaining inclined pile holes; Step 2. Drilling and reaming: Drilling and reaming holes (8) at the positions of several inclined pile holes on the pavement layer (2) respectively, the reaming holes (8) are communicated with the corresponding inclined pile holes, and the reaming holes (8) ) is larger than the size of the inclined pile hole; Step 3, filling the pouring body: filling the pouring body in the inclined pile hole until the pouring body overflows into the reaming hole (8), and after the pouring body is solidified, the solidified pouring body forms a three-dimensional mesh filling with an integrated structure. strong body Wherein, the pouring body forms an enlarged anchoring head at the bottom end of a plurality of inclined pile holes connected to the bottom, the pouring body forms an upper flange splint (9) in several reaming holes (8), and the pouring body is formed in the inclined pile holes The inclined pile (7), the enlarged anchoring head is located on the lower side of the road surface to be repaired and at the bottom of the crack or broken area, the upper flange splint (9) is located on the upper side of the road surface to be repaired layer and at the top of the crack or broken area, The enlarged anchoring head and the corresponding upper flange splint (9) clamp and reinforce the pavement to be repaired layer, so as to realize the overall reinforcement of the pavement to be repaired layer; Step 4. Completion and reaming: Complement the empty space in the several reaming holes (8) to complete the reinforcement of the road surface; When the pavement is an asphalt pavement, the free space in the several reaming holes (8) is filled with asphalt to complete the reinforcement of the asphalt pavement; When the pavement is a cement pavement, the vacant space in the several reaming holes (8) is filled with a cement filling body to complete the reinforcement of the cement pavement. 7 . The method according to claim 6 , wherein in step 1, an inclined hole drilling machine is used to drill the inclined pile hole. 8 . 8 . The method according to claim 6 , wherein in step 3, the infusion body is micro-expandable cement or polymer resin. 9 . 9. The method according to claim 6, characterized in that: in step 2, the depth of the reaming hole (8) is not less than the thickness of the upper flange plate (9).

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