Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Geocell reinforced cement concrete pavement structure and surface layer plate thickness calculation method

A technology of cement concrete and geocells, which is applied to cohesive pavements, roads, roads and other directions paved on site, can solve the problems of fatigue fracture and low strength, and achieve the goal of improving deformation resistance, reducing engineering cost and reducing thickness Effect

Pending Publication Date: 2020-11-20
HUNAN UNIV OF SCI & TECH
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The first object of the present invention is to provide a geocell-reinforced cement concrete pavement structure aimed at the above-mentioned defects in the prior art, so as to solve the problem of low strength of the existing pavement structure, fatigue fracture of the cement concrete pavement under heavy traffic, Problems such as mud pumping and staggered platform, so that the pavement structure has a strong bearing capacity and anti-deformation capacity, thereby reducing the damage of the pavement structure and prolonging the actual service life of the cement concrete pavement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Geocell reinforced cement concrete pavement structure and surface layer plate thickness calculation method
  • Geocell reinforced cement concrete pavement structure and surface layer plate thickness calculation method
  • Geocell reinforced cement concrete pavement structure and surface layer plate thickness calculation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0081] The pavement structure and construction method of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0082] see figure 1 , the geocell reinforced cement concrete pavement structure of the present embodiment comprises a base layer 3, a surface layer 2 and a wearing layer 1 laid sequentially from bottom to top, figure 1Middle 4 is the subgrade. The base layer 3 is a graded crushed stone layer 8 reinforced with geotextiles 7 of the upper and lower layers and the geocell 9 in the middle; the surface layer 2 is a cement concrete layer 6 reinforced with the geocell 9; Layer 1 is cement mixture wearing layer 11 and geogrid 5 . see figure 2 , the geocell 9 is left with pull rings 10 on both sides along the road direction, the geocell 9 is stretched to a tensioned state, and the outermost geocell 9 is fixed through the pull ring 10 with a wooden wedge 11 .

[0083] The construction method of the above-menti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a geocell reinforced cement concrete pavement structure and a surface layer plate thickness calculation method. The pavement structure mainly comprises a base layer, a surfacelayer and a wearing layer which are sequentially laid from bottom to top. The base layer is composed of an upper geotextile layer, a lower geotextile layer and a middle geocell reinforced graded broken stone layer; the surface layer is a cement concrete layer reinforced by a geocell; the wearing layer comprises a cement mixture wearing layer and a geogrid; pull rings are reserved on the two sidesof each geocell in a road direction, the geocells are stretched to be in a tensioned state, and wooden wedges penetrate through the pull rings to fix the geocell at the outermost end. The surface layer plate thickness calculation method mainly comprises the steps of traffic analysis, initial simulation of a pavement structure, determination of pavement material parameters, and checking of load stress, temperature stress and a structure limit state. The problems that an existing pavement structure is low in strength, and a cement concrete pavement is subjected to fatigue fracture, mud pumping,slab staggering and the like under heavy-load traffic are solved, so that the pavement structure has high bearing capacity and deformation resistance, and damage to the pavement structure is reduced.

Description

technical field [0001] The invention belongs to the technical field of highway engineering cement concrete pavement and construction, and in particular relates to a geocell-reinforced cement concrete pavement structure, a construction method and a method for calculating the thickness of a surface layer. Background technique [0002] With the rapid development of my country's social economy, the construction of transportation infrastructure, especially high-grade highways, has developed rapidly. As a material with high strength, good stability and low cost, cement concrete has been widely used. At present, my country is the country with the longest mileage of cement concrete pavement in the world, and cement pavement is mainly distributed in rural roads and high-grade highways in China. However, due to the substantial increase in traffic volume, the expansion of the number of vehicles and natural factors, the conditions for the use of cement concrete pavement are becoming inc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C7/36E01C3/04E01C23/01
CPCE01C7/32E01C7/36E01C3/04E01C23/01E01C2201/20
Inventor 马缤辉胡志勇蔡凯李卓赵梓景卢少昆陈炳初
Owner HUNAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products