Stress-decomposed pavement structure layer

A technology of pavement structure and stress decomposition, applied in the direction of roads, roads, pavement details, etc., can solve problems such as lateral cracks in asphalt concrete pavement, and achieve the effect of improving construction technology, preventing lateral cracks, and enhancing longitudinal flexural tensile strength

Inactive Publication Date: 2020-12-08
CHANGAN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a stress-decomposed pavement structure layer, which can solve the problem of transverse cracks in the asphalt 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
  • Stress-decomposed pavement structure layer
  • Stress-decomposed pavement structure layer
  • Stress-decomposed pavement structure layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0029] Analyzing the cause of cracks is the root of solving the problem of pavement cracking. Cracks are mainly caused by expansion and contraction stress, including the internal force of the material itself, the external force applied by the outside world, and the fatigue caused by the repeated action of internal force and external force. In the entity, this Several stresses exist objectively. Through stress analysis, to make an object crack, the stress applied to the object must be greater than the crack resistance of the object itself, and the stress applied to the road is a cumulative force, which is proportional to the longitudinal length of the road. When the length reaches a certain value , when the stress accumulates to be greater than the crack resistance strength of the road materia...

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 stress segmentation-type pavement structural layer. Joint-type stress bars are laid longitudinally in a structural layer of asphalt concrete pavement, the joint-type stress bars laid on an upper layer can prevent cracks generated by traffic loads and climate change, laid on a lower layer can prevent reflection cracks of a base layer, and laid on the base layer can preventcracks appearing on the base layer in the hardening process. According to the stress segmentation-type pavement structural layer, the problem of the horizontal cracks of a road is solved, the servicelife of the road is prolonged, later supporting of the road is delayed, the thickness of a pavement surface layer is reduced, and a pavement structure of a strong-base thin surface can be realized.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a stress-decomposed road surface structure layer. Background technique [0002] The total mileage of China's expressways has reached 131,000 kilometers, ranking first in the world. Among the completed expressways, more than 90% are semi-rigid asphalt concrete pavements. With the increasing progress of national science and technology, quality engineering has become the focus. From the perspective of roads, road cracking is one of the quality problems that need to be solved most in the current asphalt concrete pavement, especially the transverse cracks in the semi-rigid base asphalt concrete pavement structural layer. In order to prevent cracks, people have spent a lot of manpower, financial resources and energy, but the problem of cracks in asphalt concrete pavement has not been fundamentally solved. [0003] In the design of asphalt concrete pavement, a strong base an...

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 Patents(China)
IPC IPC(8): E01C7/32E01C11/16
CPCE01C7/32E01C11/165
Inventor 周志军苏毅徐天宇任晨宁
Owner CHANGAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap