The Simulation Realization of Pavement Roughness in the Time Domain

2017 International Conference on Sustainable Development on Energy and Environment Protection

能源学;生态环境科学

Xu, H.L.^1 ; He, L.^1 ; An, D.^1

School of Civil Engineering, North China University of Technology, Beijing

100144, China^1

关键词: Dynamic studies;    Pavement roughness;    Pavement systems;    Random-phase;    Sampling interval;    Sampling points;    Simulated vibrations;    Time domain;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/86/1/012016/pdf
DOI  :  10.1088/1755-1315/86/1/012016

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

As the needs for the dynamic study on the vehicle-pavement system and the simulated vibration table test, how to simulate the pavement roughness actually is important guarantee for whether calculation and test can reflect the actual situation or not. Using the power spectral density function, the simulation of pavement roughness can be realized by Fourier inverse transform. The main idea of this method was that the spectrum amplitude and random phase were obtained separately according to the power spectrum, and then the simulation of pavement roughness was obtained in the time domain through the Fourier inverse transform (IFFT). In the process, the sampling interval (Δl) was 0.1m, and the sampling points(N) was 4096, which satisfied the accuracy requirements. Using this method, the simulate results of pavement roughness (A∼H grades) were obtain in the time domain.