基于人行通道测试系统的单人步行载荷建模

摘要

应用人行通道测试系统同时测得了行人自然行走状态下的多步载荷和载荷压力中心点位移，计算了行人的步频、步长以及傅里叶级数步行载荷模型的前五阶动载因子及相位角。对94个测试者的步行载荷参数进行统计分析，行人的步频、步长均近似服从正态分布；提出前五阶动载因子依赖于步频的线性回归模型，构建了考虑五阶谐波的精细化傅里叶级数步行载荷模型。与其他步行载荷模型对比发现，步行载荷因所研究人群的不同而有较大差异，所构建模型较好地反映了中国人的步行载荷特性。%Multiple footstep loads and the center of pressure displacement were obtained using the walkway test system.Pedestrian step frequency and step length and the dynamic load factors (DLFs)and phase angles of the first five orders of the Fourier series walking load model were also calculated.Walking load parameters of 94 test subjects aere analyzed.Step frequency and step length approximately followed normal distribution respectively.Linear regression models concerning step frequency are proposed for the first five orders of DLFs.A Fourier series walking load model,considering five orders of harmonics,was developed.Comparisons with other walking load models show that the walking loads vary by the population researched,and the constructed model can reflect the walking load characteristics of Chinese people well.