Abstract
Road evenness is one of the basic factors of pavement quality. It represents not only the characteristic of the road serviceability, but also road safety and comfort. Longitudinal unevenness causes traffic discomfort and a danger of wheel-pavement interaction decreasing.Listed aspects were taken into account for an analysis of classification levels in the frame of the Slovak Pavement Management System. The simulations of different boundary conditions during pavement surface diagnostics were oriented above all to the response of unevenness to the vehicle and to the ride comfort consequently. On the other hand, an effect of unevenness to interaction between surface and wheel was the basic criteria of evaluation from a safety point of view. The paper is oriented to the observation and evaluation of described parameters during realized simulations and experimental measurements. For simulations the dynamic characteristics of real vehicles were used.
Highlights
The Slovak Pavement Management System (PMS) is a tool for effectively dividing the budget for the management of road rehabilitation
The processes are based on the diagnostics of the pavement surface parameters and bearing capacity
The response depended on the amplitude and wavelength of three ride speeds which were detected for harmonized unevenness generated by simulation and described by International Roughness Index (IRI)
Summary
The Slovak Pavement Management System (PMS) is a tool for effectively dividing the budget for the management of road rehabilitation. The system includes processes for effective maintenance, repairs and the renewal of road surfaces and structures. The processes are based on the diagnostics of the pavement surface parameters (serviceability level of pavement) and bearing capacity. One of the most important input parameters into PMS is The Longitudinal unevenness - input by the International Roughness Index (IRI), describing the longitudinal unevenness quality in five levels. In the part of the paper correlations of internationally established dynamic quantifiers of longitudinal unevenness are presented. Following the ascertained correlations of parameter C and IRI (International Roughness Index) and new legal regulations the classification scale of IRI used in Slovakia has been modified
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