施工期间考虑非机动车干扰的交叉口配时设计

Design of Intersection Timing for Non Motor Vehicle Disturbance During Construction Period

为了提高施工期间交叉口的安全性能,以福州轨道2号线建设中的古田路与新权路交叉口为研究对象,主要考虑非机动车对左转机动车的干扰。通过现场基础数据的采集,针对非机动车干扰数与同一进口道左转车辆车头时距进行回归分析,得出机非冲突函数,获得理想的拟合效果,再运用Synchro提出新的配时方案并对方案进行优化评价。比较优化前后的控制效果,可得:在早高峰阶段,非机动车干扰数与车头时距拟合关系符合二阶多项式形式;交叉口总延误降低8.8%,平均停车次数降低9.8%。

In order to improve the safety performance of intersection during the construction, Fuzhou No.2 subway in Gutian road and Xinquan road intersection were taken as the research objects. The main consideration was the non motor vehicle＇s interference to the left turning vehicles. Through collecting based data, analyzing non motor vehicle number and importing the same road turnning left to the front of the vehicle, the function of vehicle bicycle conflict was got and the ideal fitting effect was obtained. Synchro was used to propose the new scheme, to optimize and to evaluate the scheme. Through the comparison between before and after optimization of the control effect, the results showed that： in early peak stage, the fitting relationship between the headway and the number of non motor vehicles accorded with two order polynomial form; Intersection average delay decreased 8.8 %, and queue length decreased 9.8 %.