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CN-121976441-A - Airport pavement three-dimensional interlocking interface structure system and forming method thereof

CN121976441ACN 121976441 ACN121976441 ACN 121976441ACN-121976441-A

Abstract

The invention provides an airport pavement three-dimensional interlocking interface structure system and a forming method thereof, wherein the airport pavement three-dimensional interlocking interface structure system comprises a base layer and a surface layer, an array type macroscopic interlocking structure is arranged on the base layer, a microscopic interlocking structure is further arranged on the inner side surface of the macroscopic interlocking structure, a transition layer is further arranged on the microscopic interlocking structure, the surface layer is filled on the upper surface of the base layer with the macroscopic interlocking structure, the microscopic interlocking structure and the transition layer, macroscopic mechanical anchoring is provided through the macroscopic interlocking structure of a trapezoid groove structure, most interlayer shearing force and pulling force are born and transferred, and the meshing effect of microscopic textures is matched, so that the interface shearing strength and pulling resistance are improved to a greater extent.

Inventors

  • FAN LEI
  • YAN WEIHONG
  • GUO CHENGCHAO
  • QIN LEI
  • WANG MENGYU
  • Pei Leiyang
  • SUN LINGYU
  • MA HUIHUAN
  • XIAO SHUAI

Assignees

  • 中山大学
  • 河南省机场集团有限公司

Dates

Publication Date
20260505
Application Date
20260402

Claims (10)

  1. 1. The airport pavement three-dimensional interlocking interface structure system comprises a base layer (1) and a surface layer (2) and is characterized in that an array type macroscopic interlocking structure (3) is arranged on the base layer (1), a microscopic interlocking structure is further arranged on the inner side surface of the macroscopic interlocking structure (3), a transition layer is further arranged on the microscopic interlocking structure, and the surface layer (2) is filled on the upper surface of the base layer (1) with the macroscopic interlocking structure (3), the microscopic interlocking structure and the transition layer; The macro interlocking structure (3) is an array type trapezoid groove arranged on the base layer (1), the micro interlocking structure is a micron-sized surface texture structure obtained by adopting sand blasting on the inner side surface of the array type trapezoid groove, and the surface roughness Ra of the micron-sized surface texture structure is 2-12 mu m.
  2. 2. The three-dimensional interlocking interface structure system of an airport pavement according to claim 1, wherein the trapezoid grooves are arranged on the surface of the base layer (1) in a regular array mode, and the array mode is divided into a parallel stripe type structure or a grid pattern type structure.
  3. 3. The three-dimensional interlocking interface structure system of an airport pavement according to claim 2, wherein said trapezoidal grooves are divided into standard type and enhanced type.
  4. 4. The three-dimensional interlocking interface structure system of the airport pavement according to claim 3, wherein the inclination angle of the side wall of the standard trapezoid groove is 30-45 degrees, the groove bottom and all inner edges of the trapezoid groove are in arc transition, and the radius of the arc is more than or equal to 2mm; the width of the upper opening of the standard trapezoid groove is 15-25mm, the width of the lower opening is 10-18mm, the width of the upper opening is larger than that of the lower opening, and the depth of the trapezoid groove is 3-6mm.
  5. 5. The three-dimensional interlocking interface structure system of the airport pavement according to claim 3, wherein the inclination angle of the side wall of the enhanced trapezoid groove is 20-30 degrees, the groove bottom and all inner edges of the trapezoid groove are in arc transition, and the radius of the arc is more than or equal to 2mm; The width of the upper opening of the reinforced trapezoid groove is 10-18mm, the width of the lower opening is 5-12mm, the width of the upper opening is larger than that of the lower opening, and the depth of the trapezoid groove is 6-10mm.
  6. 6. A three-dimensional interlocking interface structure system for an airport pavement according to claim 3, wherein the center distance between two adjacent trapezoidal grooves is 2 times the length of the upper opening of each trapezoidal groove.
  7. 7. The three-dimensional interlocking interface structure system of an airport pavement according to claim 1, wherein the transition layer is an SBS modified asphalt bonding layer coated on a micron-sized surface texture structure or a prefabricated flexible micropore cushion layer or elastic sealant poured in trapezoid grooves with the micron-sized surface texture structure.
  8. 8. A method for forming a three-dimensional interlocking interface structure system of an airport pavement, comprising the steps of: s1), establishing a parameter optimization finite element model based on material properties, traffic load levels and environmental conditions of the base layer (1) and the surface layer (2), and optimally determining the type, geometric parameters, array arrangement mode and circular arc chamfer size of the macroscopic interlocking structure (3); S2), precisely cutting a trapezoid groove array on the surface of the base layer (1) by adopting a numerical control milling machine to match with an arc chamfer forming tool bit based on the type, geometric parameters, array arrangement mode and arc chamfer size of the macroscopic interlocking structure (3); s3) selecting a proper abrasive, and performing full-coverage sand blasting treatment on the inner side surface of the trapezoid groove array by using an automatic sand blasting machine until the roughness Ra reaches a preset value to obtain a micron-sized surface texture structure; s4), uniformly coating SBS modified asphalt or filling a flexible micropore cushion layer or pouring elastic sealant on the micron-sized surface texture structure subjected to sand blasting treatment to form a transition layer; S5, adjusting the material proportion of the surface layer (2) based on the type of the macroscopic interlocking structure (3), and paving the material of the surface layer (2) by adopting a screed with a high-frequency vibrating function until the material of the surface layer (2) is densely filled to the bottom of the trapezoid groove; S6), overlapping, slowly compacting for multiple times in the strip area where the macroscopic interlocking structure (3) is located, and simultaneously monitoring the paving temperature, the vibrating parameters and the rolling pass number in real time; S7), detecting the packing compactness of the groove by using a high-frequency ground penetrating radar GPR, and rechecking the geometric dimension by using a handheld three-dimensional laser scanner, wherein when the GPR detection has no obvious defect and the dimension deviation is less than or equal to +/-0.5 mm, the construction quality is judged to be qualified.
  9. 9. The method for forming the three-dimensional interlocking interface structure system of the airport pavement according to claim 8, wherein in the step S1), the macroscopic interlocking structure (3) is a trapezoid groove, the type of the trapezoid groove is standard and enhanced, the array arrangement mode is a parallel stripe structure or a grid pattern structure, the parallel stripe structure is suitable for a unidirectional main stress structure, and the grid pattern structure is suitable for a multidirectional stress structure.
  10. 10. The method for forming the three-dimensional interlocking interface structure system of the airport pavement according to claim 9, wherein in the step S1), the inclination angle of the side wall of the standard trapezoid groove is 30-45 degrees, the groove bottom and all inner edges of the trapezoid groove are in arc transition, and the radius of the arc is more than or equal to 2mm; The width of the upper opening of the standard trapezoid groove is 15-25mm, the width of the lower opening is 10-18mm, the width of the upper opening is larger than that of the lower opening, and the depth of the trapezoid groove is 3-6mm; The inclination angle of the side wall of the enhanced trapezoid groove is 20-30 degrees, the groove bottom and all inner edges of the trapezoid groove are in arc transition, and the radius of the arc is more than or equal to 2mm; The width of the upper opening of the reinforced trapezoid groove is 10-18mm, the width of the lower opening is 5-12mm, the width of the upper opening is larger than that of the lower opening, and the depth of the trapezoid groove is 6-10mm.

Description

Airport pavement three-dimensional interlocking interface structure system and forming method thereof Technical Field The invention relates to the technical field of civil engineering and composite structure interface enhancement, in particular to an airport pavement three-dimensional interlocking interface structure system and a forming method thereof. Background In the field of civil engineering infrastructure construction and maintenance, the application of multi-layer composite structural systems (such as old cement concrete pavement asphalt pavement, steel bridge pavement, airport composite pavement, etc.) is very common. The overall performance, bearing capacity and service life of the structure are greatly dependent on whether the interface between layers can efficiently and permanently transmit shear stress, tensile stress and bending moment. At present, the commonly adopted interface treatment technology is mainly divided into an adhesive layer technology and a surface roughening treatment technology, and the two technologies have obvious defects, especially in the occasions of bearing extreme loads and severe environment actions, such as airport pavement, heavy traffic trunk, large-span bridges and the like, the defects of the existing interface technology become key bottlenecks for restricting the overall durability of the structure. Among them, for the bonding layer technology, organic materials such as emulsified asphalt, polymer modified asphalt or epoxy resin are relied on as a bonding medium. The key problem of the technology is that the performance of the organic material is sensitive to temperature, and the organic material is easy to be subjected to chemical aging and performance decay under the environment of ultraviolet rays, oxygen and moisture for a long time, so that the cohesive force is obviously declined along with the time, and a long-term potential safety hazard is formed. For the surface roughening treatment technology, the surface roughness of the base layer is increased by roughening, napping, sand blasting and the like. The method has the defects of random uneven roughness, limited mechanical biting force, lack of three-dimensional constraint, shallow treatment depth, incapability of providing macroscopic anchoring effect, easy shearing of rough surface protrusions and rapid degradation of interface performance under the repeated actions of heavy load and impact load. Therefore, there is a need for a new interface enhancement technique that does not rely on organic binders, provides a programmable, powerful three-dimensional regular geometric mechanical locking capability, and has a standardized quality control flow. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a three-dimensional interlocking interface structure system of an airport pavement and a forming method thereof, and the invention provides a novel interface enhancement system based on a multi-scale interlocking structure and a transition layer design to solve the problems in the background art. The invention provides a three-dimensional interlocking interface structure system of an airport pavement, which comprises a base layer and a surface layer, wherein an array type macroscopic interlocking structure is arranged on the base layer, a microscopic interlocking structure is further arranged on the inner side surface of the macroscopic interlocking structure, a transition layer is further arranged on the microscopic interlocking structure, and the surface layer is filled on the upper surface of the base layer with the macroscopic interlocking structure, the microscopic interlocking structure and the transition layer. Preferably, the macro interlocking structure is a trapezoid groove arranged on the base layer, the trapezoid groove is arranged on the surface of the base layer in a regular array mode, and the array is in a parallel stripe type structure or a grid pattern type structure. Preferably, the inclination angle of the side wall of the trapezoid groove is 30-45 degrees, the groove bottom and all inner edges of the trapezoid groove are in arc transition, and the radius of the arc is more than or equal to 2mm; The width of the upper opening of the trapezoid groove is 15-25mm, the width of the lower opening is 10-18mm, the width of the upper opening is larger than that of the lower opening, and the depth of the trapezoid groove is 3-6mm. Preferably, the inclination angle of the side wall of the trapezoid groove is 20-30 degrees, the groove bottom and all inner edges of the trapezoid groove are in arc transition, and the radius of the arc is more than or equal to 2mm; the width of the upper opening of the trapezoid groove is 10-18mm, the width of the lower opening is 5-12mm, the width of the upper opening is larger than that of the lower opening, and the depth of the trapezoid groove is 6-10mm. Preferably, the center distance of two adjacent trapezoidal grooves is 2 times o