Use of generated artificial road profiles in road roughness evaluation

作     者：Giuseppe Loprencipe Pablo Zoccali 

作者机构：Department of CivilBuilding and Environmental EngineeringSapienza University of RomeVia Eudossiana1800184 RomeItaly 

出 版 物：《Journal of Modern Transportation》 (现代交通学报（英文版）)

年 卷 期：2017年第25卷第1期

页      面：24-33页

学科分类：1201[管理学-管理科学与工程(可授管理学、工学学位)] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 082304[工学-载运工具运用工程] 080204[工学-车辆工程] 0802[工学-机械工程] 0814[工学-土木工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0823[工学-交通运输工程] 0801[工学-力学（可授工学、理学学位）] 082301[工学-道路与铁道工程] 

主　　题：Ride quality International roughness indexDynamic load index Road surface irregularities - ISO2631 ISO 8608 Real road profiles Artificial roadprofiles 

摘      要：In the evaluation of road roughness and its effects on vehicles response in terms of ride quality, loads induced on pavement, drivers＇ comfort, etc., it is very common to generate road profles based on the equation provided by ISO 8608 standard, according to which it is possible to group road surface profiles into eight different classes. However, real profiles are significantly different from the artificial ones because of the non-stationary fea- ture of the first ones and the not full capability of the ISO 8608 equation to correctly describe the frequency content of real road profiles. In this paper, the international roughness index, the frequency-weighted vertical acceleration awz according to ISO 2631, and the dynamic load index are applied both on artificial and real profiles, highlighting the different results obtained. The analysis carried out in this work has highlighted some limitation of the ISO 8608 approach in the description of performance and conditions of real pavement profiles. Furthermore, the different sensitivity of the various indices to the fitted power spectral density parameters is shown, which should be taken into account when performing analysis using artificial profiles.