城市高架道路出入口匝道通行能力算法研究

摘要

The operating efficiency of the urban elevated road is significantly influenced by the ramp, so the research on the capacity of it is of great significance to the urban traffic.In this paper,the re-gression analysis,multivariate gamma distribution and the gap acceptance theory are used,consider-ing the vehicle enters the ramp into the elevated road and leaving the ramp to road on the ground,to make an improvement on capacity of elevated road ramp.It only needs less traffic flow parameters to know the capacity of elevated road ramp in the corresponding state with the method proposed in this paper.%城市高架道路的运行效率受出入口匝道制约明显，研究其通行能力对城市交通有重要意义。文中采用回归分析、多元γ分布及可接受间隙理论，综合考虑车辆驶入匝道进入高架道路及驶离匝道后汇入地面道路的运行过程，对高架道路出入口匝道的通行能力进行了改进计算。文中提出的方法只需要较少的交通流参数，即可得到对应状态下的出入口匝道通行能力。