信号控制交叉口自行车通行能力计算方法研究

Research on Calculation Method of Bicycle Capacity at Signalized Intersection

首先总结了已有的信号控制交叉口自行车通行能力计算方法,然后指出交叉口设计及管理模式会对自行车通行能力产生重要影响。按照交叉口规模及自行车过街方式的不同,将交叉口分为两相位交叉口、四相位自行车左转一次过街交叉口、四相位自行车左转二次过街交叉口3类,其中四相位自行车左转一次过街交叉口考虑了两类不同放行顺序的影响,四相位左转二次过街交叉口考虑了两种不同设计模式的影响。然后详细分析了自行车在各类交叉口的运行特点,建立了各个流向自行车通行能力的计算模型。最后利用实测数据对模型进行了参数标定,并给出算例验证模型的可用性。

First,existing calculation methods on bicycle capacity at signalized intersection were summarized,and the fact that the design and management pattern of signalized intersection have significant effect on bicycle capacity was pointed out.According to the size of intersection and the modes with which bicycles cross street,signalized intersection was divided into three types：two-phase intersection,four-phase intersection with left-turning bicycles crossing intersection within one phase,and four-phase intersection with left-turning bicycles crossing intersection within two phases.For the second type,the effect of sequence of phase was taken into account,and for the third type,the effect of two design patterns was also compared.Then traffic characteristics of bicycles at all kinds of intersections were analyzed in details and calculation models for each direction of bicycles were established respectively.Finally,parameters of the model were calibrated using measured data,and examples were given to verify the feasibility of these models.