摘要
以兼顾城市道路功能干线公路的车道宽度为研究对象,通过对武汉市不同路段上的运行车速、车辆横向安全距离的关系调查,以及数据拟合对波良可夫模型进行修正,从而得到同向行车间横向安全距离、车辆与车道边缘线间横向安全距离的计算模型.采用修正模型计算后得到的同向行车间横向安全距离、车辆与车道边缘线间横向安全距离与采用初始模型所计算的相比都有不同程度的缩减;应用该修正模型得出了不同道路横断面形式及设计速度下所对应的车道宽度计算模型,并以设置有中央分隔带的单向三车道干线公路为例,分别给出了设计速度为60,80,100 km/h下由内到外的车道宽度建议值分别为3.08,3.16,3.73 m;3.23,3.23,3.75 m;3.37,3.30,3.75 m.利用VISSIM软件并结合工程实例验证车道宽度计算模型,根据仿真结果分析,当由车道宽度计算模型得到的车道宽度应用于工程实例时,路段各车道的交通量与平均车速与实际调查数据虽有一定的差距,但总体变化不大,各值均小于7%,可以认为修正后的车道宽度对车辆行驶影响很小,因此应用波良可夫修正模型得到车道宽度计算模型具备一定的合理性.
Taking the lane width of the trunk highway with urban road function as the research object,through the investigation of the relationship between the running speed and the lateral safety distance of vehicles on different sections in Wuhan and data fitting,the Boliankov model was modified,and the calculation models of the lateral safety distance between the same lane workshop and the lateral safety distance between the vehicle and the lane edge line were obtained.Compared with the results calculated by the initial model,the results calculated by the modified model were reduced in different degrees.And the corresponding lane width calculation models under different road cross-section forms and design speeds were obtained.Taking the one-way three-lane trunk highway with central divider as an example,the suggested lane widths from inside to outside at the design speeds of 60,80 and 100 km/h are 3.08,3.16,3.73m,3.23,3.23,3.75m and 3.37,3.30,3.75m,respectively.VISSIM software was used to verify the lane width calculation model combined with an engineering example.According to the simulation results,when the lane width calculated by the lane width calculation model is applied to an engineering example,although there is a certain gap between the traffic volume and the average speed of each lane in the road section and the actual survey data,each value is less than 7%,and the revised lane width has little impact on vehicle driving.
作者
苏小青
段和柱
刘振涛
SU Xiaoqing;DUAN Hezhu;LIU Zhentao(CCCC Second Highway Consultant Co.Ltd,Wuhan 430052,China;School of Transportation and Logistics,Wuhan University of Technology,Wuhan 430063,China)
出处
《武汉理工大学学报（交通科学与工程版）》
2022年第4期592-597,共6页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金(51678460)
湖北省交通运输厅科技项目(2014-721-2-7)。
