陈仁朋1,2?覮,朱建宇1,姜正晖3,贾瑞雨4.基于舒适性的软土地区公路行驶质量评价方法[J].湖南大学学报:自然科学版,2020,(7):120~127
基于舒适性的软土地区公路行驶质量评价方法
Evaluation Method of Driving Quality of Roads Constructed in Soft Soil Area Based on Driving Comfort
  
DOI:
中文关键词:  道路安全工程  沉降  评价方法  车辆-道路相互作用
英文关键词:road safety engineering  settlement  evaluation method  vehicle-road interaction
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作者单位
陈仁朋1,2?覮,朱建宇1,姜正晖3,贾瑞雨4 (1. 软弱土与环境土工教育部重点实验室(浙江大学)浙江 杭州 310058 2. 湖南大学 土木工程学院湖南 长沙 410082 3. 浙江省交通规划设计研究院浙江 杭州 310006 4. 长江勘测规划设计研究院湖北 武汉 430010) 
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中文摘要:
      针对软土地基公路工后沉降大、分布范围广,现有国际平整度指数IRI评价方法存在很大局限性的问题,提出了基于行车舒适性的软土地区公路行驶质量评价方法. 首先采用五自由度1/2车辆模型,计算比较了道路纵面线形拟合方法和数据间距对车辆振动加速度计算结果的影响,获得了车辆振动的加权加速度均方根值;根据ISO2631振动舒适性标准提出评价司乘人员的舒适性DCI和RQI计算公式及参数取值;结合软土地基及非软土地基两种路段沉降情况,比较了本文方法与国际平整度指数IRI方法评价结果的区别. 分析发现,在非软土地基公路,本文方法与IRI方法评价结果接近;而在软土地基公路,两者的结果差异较大,本文方法更加符合工程师的直观感觉.
英文摘要:
      The post-construction settlement of road constructed on soft ground is significant and widespread. The current international roughness index(IRI) subjects some limitations. Hence,based on the driving comfortableness, this study proposed an assessment method for driving quality of roads on soft ground. Firstly,the influences of fitting methods and the distance of fitting points on the vehicle vibration acceleration were evaluated by five-degree 1/2 vehicle-road interaction model. The weighted root mean square of vehicle acceleration was thus obtained. Secondly, based upon the standard for vibration comfortableness(ISO2631),the equations for DCI and RQI for assessing the comfortableness of driver and passenger were developed. Finally, on the basis of two scenarios of soft ground and non-soft ground, the evaluation results calculated from the methods in this study and IRI were compared. The results demonstrate that, in the non-soft ground, the results are similar. In contrast, the results in soft ground are quite different, and the methods proposed in this study are more in line with the engineers′ visual sense.
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