积雪路面条件下城市道路驾驶员行车特性研究
首发时间:2011-01-13
摘要:为定量研究积雪条件下的路面摩擦系数特性及驾驶员行车紧张特性,在现场观测的基础上,采用回归分析方法对积雪路面的摩擦系数与温度、湿度、积雪厚度及积雪压实度关系进行研究,发现积雪路面的摩擦系数与温度和积雪厚度相关性较弱,而与湿度和积雪压实度相关性较强,并构建了三者的多元线性回归模型。分别对经验丰富与经验欠缺驾驶员在静态条件、正常行车条件与积雪路面行车条件下的血流量、皮肤温度与呼吸量三项指标进行实车测试,对比分析了积雪路面条件下驾驶员行车时血液循环系统、神经系统与呼吸系统的变化特性,建立了驾驶员行车心理紧张度评价模型。
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Driving Characteristic of Driver's on Urban Road under the Condition of Snow Pavement
Abstract:In order to study quantitatively friction coefficient characteristic and driving tenseness of drivers under the condition of snow pavement, regression method was adopted to study the relation among temperature, moisture, snow's thickness and snow's degree of compaction and snow pavement's friction coefficient based on field observation. It is found that there are weak pertinence between snow pavement's friction coefficient and temperature, snow's thickness. There are relativity between snow pavement's friction coefficient and moisture, snow's degree of compaction. Then multi-linear regression model are established among them. Through vehicle test with experienced drivers and inexperienced drivers under the condition of immobile, driving on non-snow pavement and driving on snow pavement, blood flow, skin temperature and respiration volume were obtained. The change characteristic of driver's blood circulation system, nerve system and respiration system were analyzed contrastively. Evaluation model is established on tenseness of drivers.
Keywords: transportation plan and management snow pavement driver driving tenseness
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