田间长波路面不平度表达和分级的新方法

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (11) : 180-188.

论文

田间长波路面不平度表达和分级的新方法

程远盛1，2，李晓勤1，2，孙帅帅3，满晓兰1，2，范非凡1，2，李志雄4

作者信息 +

A new method for expression and classification of long wave road surface unevenness in field

CHENG Yuansheng1,2, LI Xiaoqin1,2, SUN Shuaishuai3, MAN Xiaolan1,2, FAN Feifan1,2, LI Zhixiong4

Author information +

文章历史 +

摘要

本文以牵引车为动力在构造的21种不同种尺寸的土壤矩形坑路面上进行振动测试，建立了土壤软路面有效不平度表达式，并求出空间位移功率谱密度(PSD)。结果显示：（1）21种路面的有效不平度空间功率谱密度曲线均有呈比例增加的5个峰值点，与土壤矩形坑后端激励的5次倍频相关系数（R2）范围为0.9798~0.9956；在20种路面中的频率指数w值均小于-2，表明土壤矩形坑后端为主要激励点并验证了有效不平度求解的有效性，以及田间长波路面是主要的激励频带。（2）随着矩形坑尺寸的变化，21种路面等级在A~F之间，符合ISO8608标准的分级方法和驾驶员的主观感受。该论文提出了田间长波路面不平度表达和分级的新方法，为建立土壤软路面谱提供了参考依据。

Abstract

In this paper, vibration tests were carried out on 21 kinds of soil rectangular pit pavement with different sizes by using tractor as the power. The effective roughness expression of soil soft pavement was established, and the spatial displacement power spectral density (PSD) was calculated. According to the result：（1）The spatial power spectral density curves of effective roughness of 21 kinds of road surfaces all have five peak points which increase proportionally, and five times frequency of the correlation coefficient (R2) with the excitation at the back of the rectangular pit is 0.9798~0.9956. The frequency index w values in 20 kinds of road surfaces are all less than -2, which indicates that the back end of the rectangular pit in soil is the main excitation point and verifies the effectiveness of the solution to the effective roughness, and the long wave road surface in the field is the main excitation frequency band. （2）With the change of rectangular pit size, road surface grades in 21 kinds are between A and F, which conforms to the grading method of ISO8608 standard and the subjective feeling of drivers. In this paper, a new method of expression and classification of long wave pavement roughness in the field is proposed, which provides references for the establishment of soil soft pavement spectrum.

导出引用

程远盛1，2，李晓勤1，2，孙帅帅3，满晓兰1，2，范非凡1，2，李志雄4. 田间长波路面不平度表达和分级的新方法[J]. 振动与冲击, 2022, 41(11): 180-188

CHENG Yuansheng1,2, LI Xiaoqin1,2, SUN Shuaishuai3, MAN Xiaolan1,2, FAN Feifan1,2, LI Zhixiong4. A new method for expression and classification of long wave road surface unevenness in field[J]. Journal of Vibration and Shock, 2022, 41(11): 180-188

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