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Dynamic response to road roughness on a tractor-semitrailer system with driver body model

Journal of University of Science and Technology Beijing 2002年第4期9卷 305-310页

作者： ShengLing YunqiuHan JiangLiu CivilandEnvironmentalEngineeringSchool UniversityofScienceandTechnologyBeijingBeijing100083.China MechanicalEngineeringSchool UniversityofScienceandTechnologyBeijing.Beijing100083.China

A linear mass-spring system model of a tractor-semitrailer together withdriver body parts and sprung seat is presented. Natural frequencies of the system are calculated andresponse of components in the system to road roughness is completed by means of computer simulationand power spectral density (PSD) approach in all of road conditions and loading cases. The resultsshow that the severest situation of response of the system occurs when the road in rough conditionand vehicle unladen. The most sensitive frequency to human body parts is around 0.9 Hz, and modeltypes of a human body seem to be not significant to the response of a heavy tractor-semitrailersystem, including to the response of the driver himself.

关键词： tractor-semitrailer dynamic response road roughness computersimulation power spectral density

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Measuring and evaluating of road roughness conditions with a compact road profiler and ArcGIS

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Journal of Traffic and Transportation Engineering(English Edition) 2016年第5期3卷 398-411页

作者： Nueraihemaitijiang Abulizi Akira Kawamura Kazuya Tomiyama Shun Fujita Graduate School of Engineering Kitami Institute of TechnologyHokkaido 090-8507Japan Department of Civil and Environmental Engineering Kitami Institute of TechnologyHokkaido 090-8507Japan Hokkaido Regional Development Bureau Ministry of LandInfrastructureTransport and TourismHokkaido 090-8507Japan

With a wide range of requirements throughout the world, high-quality road management is subject to increasing demand from a perspective of customer-oriented levels of service. In recent years, road administrators are requested to create a visual map of a road network to monitor conditions. To fulfill these requirements, this study conducted as follows. Firstly, this paper introduces a new compact road profiler to collect the profile data at ease. Using the international roughness index （IRI） to assess public roads in local cities of Japan＇s Hokkaido prefecture, this study also provides real-time monitoring of pavement roughness conditions. Moreover, this study deals with an effective method for visualizing collected IRI data as an attribute in a geographic information system （GIS） and the database of Japan digital road map （DRM）. Secondly, the authors present the measurement results of IRI at two different cities during different seasons by using GIS to compare the road conditions. According to the results clarified on different statistical characteristics of road profiles, this study recommends that it is necessary to establish pavement management system （PMS） in consideration of road class, network of local city, and evaluation and management of road conditions in winter quantitatively. Finally, the authors measure and evaluate ride quality by assessing differences between the inner wheel path （IWP） and outer wheel path （OWP） of the vehicle into account, using the previously mentioned profilers and the driving simulator, which is called KITDS. Results show that information from both wheel paths contributes to improve current monitoring process regarding pavement surface, and expects to construct a high level of PMS for road administration in the future.

关键词： road engineering road roughness Mobile compact profiler ArcGIS Ride quality Wheel path

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