A road surface quality grade identification method based on road profile information

A technology of quality grade and identification method, applied in the field of grade identification, which can solve the problems of no unified standard and single road surface quality, etc.

Active Publication Date: 2016-05-11
JILIN UNIV
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Problems solved by technology

However, although the PSD method has high calculation accuracy, it can only evaluate the pavement quality of the test road by analyzing a certain power spectral density curve. Theoretical analysis of road data

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  • A road surface quality grade identification method based on road profile information
  • A road surface quality grade identification method based on road profile information
  • A road surface quality grade identification method based on road profile information

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Embodiment Construction

[0056] The technical solution proposed by the present invention will be further elaborated and described below in conjunction with the accompanying drawings.

[0057] The present invention provides a road surface quality grade identification method based on a large amount of road profile information, such as figure 1 As shown, the method includes the following steps:

[0058] 1. Extract effective road profile elevation information and establish a road database:

[0059] A laser displacement sensor is installed on the test vehicle to collect the elevation information of the vertical section of the test road to construct a spatial domain database of the road vertical section; the data used in this embodiment is the spatial domain data of a section of 1000km expressway vertical section.

[0060] The present invention regards the road as composed of different short waves, medium waves and long waves, and the spatial frequency n is the reciprocal of the wavelength, which represent...

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Abstract

The invention discloses an identification method for the pavement quality grade on the basis of information of the longitudinal section of a road. The identification method mainly comprises the following steps: (1) extracting effective information about elevation of the longitudinal section of a road and establishing a road database; (2) generating a power spectral density (PSD) curve in sections, and carrying out band-pass filtering processing; (3) extracting PSD pavement characteristic parameters, i.e., a pavement unevenness coefficient and a frequency index; (4) establishing a PSD pavement characteristic parameter database, and drawing a PSD characteristic parameter probability density distribution diagram; (5) converting the PSD characteristic parameters into IRI (International Roughness Index) values, generating a three-dimensional map and marking out road-quality-grade contour lines; and (6) quantitatively calculating the quality-grade distribution condition of the road. The identification method disclosed by the invention has the beneficial effect that with integration of the advantages of pavement evaluation methods such as a PSD method and an IRI method, and on the basis of the information about elevation of the longitudinal section of the road, the quality-grade distribution condition of the tested road is quantitatively identified.

Description

technical field [0001] The invention relates to a quantitative processing method for road profile information, in particular to a road surface quality grade identification method based on road profile information. Background technique [0002] With the increasing demand for automobiles, the automobile market is increasingly showing unprecedented vitality. Since 2009, my country has continued to become the world's largest automobile production and sales country, and its research and development of automobiles has gradually moved on the right track, entering a new stage of independent research and development. Under the basic system research framework of "road surface-car-human", road surface roughness, as the most primitive stimulus of the vehicle, directly affects the ride comfort, ride comfort, reliability and life of the load-carrying system of the vehicle. Therefore, how to effectively collect and process road information, and how to detect and evaluate the quality level...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/01
Inventor 郭洪艳房丽爽陈虹曲婷
Owner JILIN UNIV
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