CN-121976449-A - Repairing structure and repairing method for core hole of asphalt pavement

CN121976449ACN 121976449 ACN121976449 ACN 121976449ACN-121976449-A

Abstract

The invention provides an asphalt pavement coring hole repairing structure which comprises an asphalt pavement body and a repairing body, wherein the asphalt pavement body comprises a pavement surface layer, a surface layer coring hole is formed in the pavement surface layer, the repairing body is fixedly arranged in the surface layer coring hole through an auxiliary repairing mechanism, the repairing body comprises a repairing body, the repairing body comprises a core filling precast block and an expansion filling body, the core filling precast block is arranged in the center of the surface layer coring hole, and the expansion filling body is arranged on the periphery of the core filling precast block. The invention also provides a repairing method for the coring holes of the asphalt pavement. The invention can enhance the compaction effect of the core filling precast block and the side wall of the coring hole by the expansion characteristic of the expansion filling body, and can further improve the filling compactness and the bonding firm strength of the coring hole interface in the coring hole by the characteristics of low-temperature shrinkage and high-temperature softening of the asphalt pavement material.

Inventors

XIAO MIN
JIE YONGJUN
CAI XIONGMIN
CHEN MING
ZHU YAOTING
LI CHONG
ZHONG SHUIPING
LIU YONG
CAI NING
GAN LIN
GUAN LINGXIAO

Assignees

江西省交通投资集团有限责任公司
江西省交投养护科技集团有限公司
江西省交通运输科学研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20251216

Claims (10)

1. The utility model provides a bituminous paving coring hole repair structure which characterized in that includes: the asphalt pavement comprises an asphalt pavement body (10), wherein the asphalt pavement body (10) comprises a pavement surface layer (13), and a surface layer coring hole (131) is formed in the pavement surface layer (13); The restoration body (20), restoration body (20) set firmly in through supplementary repair mechanism (30) in surface course coring hole (131), restoration body (20) are including restoration body (22), restoration body (22) are including filling out core prefabricated section (221) and inflation filling body (227), fill out core prefabricated section (221) locate center in surface course coring hole (131), inflation filling body (227) are located fill out the periphery of core prefabricated section (221).
2. The asphalt pavement coring hole repair structure according to claim 1, wherein the repair body (22) further comprises a rod-side connector (222) and transverse connecting ribs (224), the rod-side connector (222) is arranged in the core filling precast block (221), a plurality of the transverse connecting ribs (224) are uniformly distributed in the circumferential direction of the rod-side connector (222), and the transverse connecting ribs (224) extend into the expansion filling body (227).
3. The repairing structure for the core hole of the asphalt pavement according to claim 2, wherein a plurality of side wall connecting grooves (2212) are uniformly distributed on the periphery of the core filling precast block (221), the expansion filling bodies (227) are arranged in the side wall connecting grooves (2212), and the transverse connecting ribs (224) penetrate through the expansion filling bodies (227) in the side wall connecting grooves (2212).
4. The asphalt pavement coring hole repair structure according to claim 2, wherein the asphalt pavement body (10) further comprises a pavement base layer (11) and a roadbed soil body (12), the pavement base layer (11) is stacked on the upper surface of the roadbed soil body (12), the repair body (20) further comprises a repair base body (21), the repair base body (21) comprises a preset anchor pipe (211), the preset anchor pipe (211) is arranged in the pavement base layer (11) and the roadbed soil body (12) in a penetrating manner, the repair body (22) further comprises a stiff connecting rod (223), one end of the stiff connecting rod (223) penetrates through the rod-side connecting body (222) and the other end of the stiff connecting rod penetrates through the preset anchor pipe (211).
5. The asphalt pavement coring hole repair structure according to claim 4, wherein said repair base (21) further comprises a pipe bottom grouting body (212) and a grouting solid body (213), said pipe bottom grouting body (212) is disposed at the bottom of said preset anchor pipe (211) and at the bottom of said stiff connecting rod (223), and said grouting solid body (213) is disposed at the bottom of the periphery of said preset anchor pipe (211).
6. The asphalt pavement coring hole repair structure according to claim 4, wherein said repair body (22) further comprises a slurry-setting binder (226), a plurality of annular slurry-setting connecting grooves (2211) are provided at the bottom of said core-filling precast block (221), said slurry-setting binder (226) is provided in said slurry-setting connecting grooves (2211), and said slurry-setting binder (226) is provided on the upper surface of said pavement base layer (11).
7. The asphalt pavement coring hole repair structure according to any one of claims 1 to 6, wherein upper surfaces of the core filling prefabricated block (221) and the expansion filler (227) are provided in an upwardly convex arch shape.
8. The asphalt pavement coring hole repair structure according to any one of claims 2 to 6, wherein an end of the lateral connecting rib (224) remote from the rod-side connecting body (222) is provided with an elastic side rib (225), and the elastic side rib (225) abuts against an inner wall of the surface coring hole (131).
9. A method for repairing a core hole of an asphalt pavement, which is applied to the repairing structure as claimed in any one of claims 1 to 8, and comprises the following steps: The prefabricated core filling prefabricated block (221), wherein a rod side connecting body (222), transverse connecting ribs (224) and a stiff connecting rod (223) are arranged in the core filling prefabricated block (221), a plurality of transverse connecting ribs (224) are uniformly distributed in the circumferential direction of the rod side connecting body (222), the transverse connecting ribs (224) extend to the outer side of the core filling prefabricated block (221), elastic side ribs (225) are arranged at the outer ends of the transverse connecting ribs (224), one end of the stiff connecting rod (223) penetrates through the rod side connecting body (222), and the other end of the stiff connecting rod extends to the outer side of the core filling prefabricated block (221); Inserting a preset anchor pipe (211) into a rear anchor hole (111) of a road surface base layer (11) and a roadbed soil body (12) and injecting pipe bottom grouting bodies (212) into the preset anchor pipe (211), wherein a plurality of rows of grouting holes (2111) are formed in the bottom circumference of the preset anchor pipe (211); Paving a sizing adhesive body (226) at the bottom of a surface layer coring hole (131) of the pavement surface layer (13), and coating a metal adhesive at the bottom of the stiff connecting rod (223); Placing the core-filling prefabricated block (221) in the surface layer coring hole (131) and enabling the bottom of the stiff connecting rod (223) to penetrate into the preset anchor pipe (211); The auxiliary repairing mechanism (30) is arranged on the upper surface of the pavement surface layer (13) and spans over the core filling precast block (221), the auxiliary repairing mechanism (30) comprises an arch-shaped pressing plate (311) arranged on the upper surface of the core filling precast block (221), a low-temperature weight box (32) arranged on the upper surface of the pavement surface layer (13) and arranged on the periphery of the surface layer coring hole (131), a plurality of temperature compensation belts (34) arranged on the upper surface of the arch-shaped pressing plate (311) and a compacting mechanism (31) arranged right above the arch-shaped pressing plate (311), and a filling injection pipe (35) is arranged on the arch-shaped pressing plate (311); The pavement surface layer (13) at the periphery of the surface layer coring hole (131) is cooled to a first temperature through the low-temperature weight box (32), and an expansion filling body (227) is injected to the periphery of the core filling precast block (221) through the filling injection pipe (35); pressure is applied to the arched pressing plate (311) through the compaction mechanism (31), so that the core filling precast block (221) is tightly connected with the expansion filling body (227) and the grouting binding body (226), and the pipe bottom grouting body (212) is extruded into the roadbed soil body (12) through the grouting holes (2111) through the stiff connecting rod (223) to form a grouting solid body (213).
10. The method for repairing the coring holes of the asphalt pavement according to claim 9, wherein the auxiliary repairing mechanism (30) further comprises an annular supporting plate (33) paved on the upper surface of the pavement surface layer (13), the annular supporting plate (33) is provided with the low-temperature pressure weight box (32), the low-temperature pressure weight box (32) is internally provided with water ice mixed salt (321), the compacting mechanism (31) comprises two guide posts (317) symmetrically arranged on the inner side of the annular supporting plate (33), a back pressure screw (315) arranged on the guide posts (317), supporting beams (314) with two ends respectively connected with the back pressure screw (315), and arch-shaped pressure beams (312) connected with the supporting beams (314) through a plurality of connecting vertical rods (313), the arch-shaped pressure beams (312) are arranged on the upper surface of the arch-shaped pressure plates (311), the arch-shaped pressure plates (311) are in sliding connection with the guide posts (317) through sliding chute connecting plates (318), and a plurality of temperature compensation strips (34) are arranged on the upper surface of the arch-shaped pressure beams (312).

Description

Repairing structure and repairing method for core hole of asphalt pavement Technical Field The application relates to the technical field of asphalt pavement detection, in particular to a repairing structure and a repairing method for a core hole of an asphalt pavement. Background Coring detection of asphalt pavement is an important way to evaluate pavement quality, however, if holes left after coring are not repaired timely and effectively, a series of pavement diseases can be caused. At present, most of the core holes are repaired by adopting a cold patch filling or hot asphalt filling mode, and the mode is simple and convenient to operate and low in cost, but has the inherent defects of infirm bonding of core hole interfaces, poor compactness in hole filling, poor road surface flatness and the like. In order to solve the inherent defects, the prior art has a deformation-based method for prefabricating and filling coring holes of asphalt pavement. According to the method, a brand new upper layer test piece, a brand new middle layer test piece and a brand new lower layer test piece are prepared according to the hole depth of the pavement, and are concentrically stacked from top to bottom, so that a combined test piece which is consistent with the hole depth is obtained, and then a tool is used for pressing the combined test piece down until the downward movement amount is equal to the deformation amount of the asphalt mixture layer. The method fully considers the thickness of the pavement structural layer and the coordination of structural deformation after filling the coring holes and the deformation of the hole outer structural layer when the prefabricated member is prefabricated. However, the preparation process of the prefabricated member in the method is complex, the bonding problem of the connecting interface between the prefabricated member and the holes is difficult to solve, and the flatness of the pavement structure after the holes are filled is difficult to ensure. Disclosure of Invention The invention aims to provide a repairing structure and a repairing method for a core hole of an asphalt pavement, which are used for solving one or more of the technical problems. In order to achieve the above purpose, the present invention adopts the following technical scheme. In a first aspect, the present invention provides an asphalt pavement coring hole repair structure, comprising: The asphalt pavement comprises an asphalt pavement body, wherein the asphalt pavement body comprises a pavement surface layer, and a surface layer coring hole is formed in the pavement surface layer; The restoration body is fixedly arranged in the surface layer coring hole through an auxiliary restoration mechanism, the restoration body comprises a restoration body, the restoration body comprises a core filling precast block and an expansion filling body, the core filling precast block is arranged at the center in the surface layer coring hole, and the expansion filling body is arranged at the periphery of the core filling precast block. As an improvement of the invention, the repairing body further comprises a rod side connector and transverse connecting ribs, the rod side connector is arranged in the core filling precast block, a plurality of the transverse connecting ribs are uniformly distributed in the circumferential direction of the rod side connector, and the transverse connecting ribs extend into the expansion filling body. As an improvement of the invention, a plurality of side wall connecting grooves are uniformly distributed on the periphery of the core filling precast block, the expansion filling body is arranged in the side wall connecting grooves, and the transverse connecting ribs penetrate through the expansion filling body in the side wall connecting grooves. As an improvement of the invention, the asphalt pavement body further comprises a pavement base layer and a roadbed soil body, the pavement base layer is laminated on the upper surface of the roadbed soil body, the repairing body further comprises a repairing body, the repairing body comprises a preset anchor pipe, the preset anchor pipe penetrates through the pavement base layer and the roadbed soil body, the repairing body further comprises a stiffness connecting rod, one end of the stiffness connecting rod penetrates through the rod side connecting body, and the other end of the stiffness connecting rod penetrates through the preset anchor pipe. As an improvement of the invention, the repairing matrix further comprises a pipe bottom grouting body and a slurry-solid body, wherein the pipe bottom grouting body is arranged at the bottom in the preset anchor pipe and at the bottom end of the stiff connecting rod, and the slurry-solid body is arranged at the bottom of the periphery of the preset anchor pipe. As an improvement of the invention, the repairing body further comprises a slurry-setting binding body, a plurality of annular slurry-setting connect