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Method for evaluating wavelength distribution of pavement surface texture structure

A surface texture and evaluation method technology, applied in image analysis, image data processing, instruments, etc., to achieve the effects of strong practicability, high promotion value, and high degree of function fitting

Pending Publication Date: 2021-12-03
SHANDONG TRANSPORTATION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the needs and deficiencies of the current technological development, the present invention provides an evaluation method for the wavelength distribution of the pavement surface texture structure, so as to more scientifically guide the actual problems related to factors such as anti-skid and noise in road construction

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  • Method for evaluating wavelength distribution of pavement surface texture structure
  • Method for evaluating wavelength distribution of pavement surface texture structure
  • Method for evaluating wavelength distribution of pavement surface texture structure

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Embodiment 1

[0038] combined with Figure 1-9 , this embodiment proposes a method for evaluating the wavelength distribution of pavement surface texture structure, and its implementation process includes:

[0039] Step S1, using a laser texture scanner to collect the surface texture structures of road surface A, road surface B, and road surface C. Reference attached figure 1 , 2 , 3. The lengths of road surface A, road surface B and road surface C are the same.

[0040] Step S2, using octave band analysis and setting a 0.5mm low-pass filtering method to obtain road surface power spectral densities PSD at different wavelengths.

[0041] The road surface power spectral density PSD of road surface A, road surface B, and road surface C at different wavelengths is shown in Table 1:

[0042] Table 1

[0043] wavelength(mm) Pavement A Pavement B Pavement C 146.0857 0.001642 0.010298 0.003714 73.04284 0.006483 0.026788 0.009165 36.52142 0.099109 0.270001 0...

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Abstract

The invention discloses a method for evaluating wavelength distribution of a pavement surface texture structure, and relates to the technical field of road engineering. The method comprises the steps: employing a laser texture scanner to collect the road surface texture structure; by adopting octave analysis and setting a low-pass filtering mode, acquiring pavement power spectral densities PSD of different wavelengths; performing curve fitting on the pavement power spectral densities PSD of different wavelengths by adopting a Gaussmod function model to obtain a wavelength-power spectral density PSD fitted curve; and carrying out area integration on the wavelength-power spectral density PSD fitted curve to obtain the area proportion of any section of wavelength, and evaluating the wavelength distribution condition of the pavement texture structure by taking the area proportion of a certain section of wavelength as an index. According to the evaluation method, the wavelength distribution function of the pavement surface texture structure can be stably obtained and is further used for analyzing factors such as pavement skid resistance and noise, and road engineering application production is effectively guided.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to an evaluation method for wavelength distribution of road surface texture structure. Background technique [0002] According to the relationship between wavelength and pavement texture structure, the World Road Association divides pavement texture structure into: aggregate surface microstructure, pavement macro texture structure, pavement mega texture structure and road surface unevenness. The wavelength of the microscopic texture of the aggregate is between 1 μm and 0.5mm. The microscopic structure provides sufficient anti-skid ability for the vehicle to drive on dry roads and wet roads when the speed is lower than 80km / h. The microscopic texture has little effect on road noise; The texture wavelength is between 0.5mm and 50mm, and the macroscopic texture wavelength provides anti-skid ability for the road surface. At the same time, macro texture is the main cause of tir...

Claims

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Application Information

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IPC IPC(8): G06T7/41G06T7/62
CPCG06T7/41G06T7/62G06T2207/10008
Inventor 林江涛樊亮张瀚坤李永振张岩毕飞魏慧梁皓周圣杰侯佳林姜峰杨飞刘方韬
Owner SHANDONG TRANSPORTATION INST