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Method for prolonging service life of pavement

A technology of life and road performance, applied in the field of extending the service life of road surfaces, can solve the problem of uneven distribution of axle load space, save maintenance costs, improve performance and life.

Inactive Publication Date: 2012-01-11
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the number of axle loads is the main cause of pavement damage, but the division of lanes has caused extremely uneven spatial distribution of axle loads

Method used

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  • Method for prolonging service life of pavement
  • Method for prolonging service life of pavement
  • Method for prolonging service life of pavement

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Embodiment Construction

[0016] In order to further understand the content of the invention, features and effects of the present invention, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

[0017] The invention provides a method for prolonging the service life of the road surface. When the road surface is used for a certain number of years, the old traffic marking line of the road is removed, and the new marking line is applied after the lane is shifted by a certain distance. see figure 1 , if the lane is shifted by two wheel track belts, the wheel track will mainly act on the basically idle 4 and 5 belts, while the number of times the axle load of the 2 and 3 belts will be greatly reduced, which can effectively distribute the load evenly over the life of the road. The spatial distribution during the period will greatly improve the performance and life of the road, and save the cost of road maintenance.

[0018] For the determination of the...

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Abstract

The invention discloses a method for prolonging service life of a pavement. When lane accumulated axle load reaches Nt or an pavement performance index reaches Pt, old traffic marker lines of a road are shoveled off, lanes are translated for 50-150cm and new marker lines are drawn, wherein the Nt and the Pt are respectively determined by the following formulas: Pl=f (Nt.az+NS.azl)= f (Nt.azf+Ns.az), and Pt=f (Nt.az), wherein: Pl denotes the lower limit of the pavement performance index, the f (.) denotes to a decay function of pavement performance with times of accumulated axle load, the Nt denotes the lane accumulated axle load during lane translation, the Ns denotes the lane accumulated axle load after translation, the az denotes main wheel path axle load frequency, azl denotes the original main wheel path axle load frequency after lane translation and the azf denotes the axle load frequency of translated new main wheel paths before translation. By adopting the method of regularly translating the lanes, the space distribution of the load in the service life of the road is effectively kept to be even, the service performance and the service life of the road are greatly improved and the maintenance cost of the road is saved.

Description

technical field [0001] The invention relates to a road construction method, in particular to a method for prolonging the service life of the road surface. Background technique [0002] From the perspective of road design theories and methods, the number of axle loads is the most important parameter in road design, which determines the design life and life of the road. Pavement Design Specifications, all of which take the size of the axle load and the number of actions as the main basis for the design of the pavement. From the perspective of road use, the repeated action of road axle loads is the main reason for the decline and damage of road surface quality. Relevant studies have proved that cracks, net cracks, cracks, waves, ruts, crowds, potholes, loosening, peeling, etc. The occurrence of diseases is closely related to the repeated action of axle load, especially the most direct reason for the development and aggravation of the above-mentioned diseases is the repeated ac...

Claims

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Application Information

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IPC IPC(8): E01F9/08E01C1/00E01F9/576
Inventor 崔洪军
Owner HEBEI UNIV OF TECH
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