The invention belongs to the technical field of expressway traffic capacity judgment, and particularly relates to a multi-lane expressway diversion affected zone traffic capacity analysis method which comprises the following steps: acquiring a microscopic simulation model of a section of multi-lane expressway, and calibrating vehicle composition and expected vehicle speed distribution parameters of the section of multi-lane expressway by adopting measured data; setting shunting influence zone ranges in the microscopic simulation model, and setting car following behavior control parameters and lane changing behavior control parameters according to different shunting influence zone ranges; and outputting traffic volumes of different influence zone ranges by using a microscopic simulation model, and calculating the traffic capacity of the multi-lane expressway according to the traffic volumes by calculating the maximum service traffic volume of an upstream forecast section of a diversion zone and the traffic volumes of a diversion downstream exit ramp under different diversion proportions. According to the method, the traffic capacity and the traffic characteristics of the multi-lane expressway diversion influence area under the condition of different traffic volume proportions are obtained according to the calibrated parameters in combination with the traffic capacity calculation model.
本发明属于高速公路通行能力判定技术领域,特别涉及一种多车道高速公路分流影响区通行能力分析方法,包括:获取一段多车道高速公路的微观仿真模型,采用实测数据标定该段多车道高速公路的车辆组成及期望车速分布参数;在微观仿真模型中对分流影响区范围进行设定,根据不同分流影响区范围设置跟车行为控制参数及换道行为控制参数;利用微观仿真模型输出不同影响区范围的交通量,通过计算分流区上游预告段的最大服务交通量以及分流下游出口匝道在不同分流比例下的交通量,根据交通量,计算多车道高速公路通行能力。本发明根据标定的各参数结合通行能力计算模型得到该段多车道高速公路分流影响区在不同交通量比例情况下的通行能力和交通特性。
Method for analyzing traffic capacity of diversion influence area of multi-lane expressway
一种多车道高速公路分流影响区通行能力分析方法
2022-06-03
Patent
Electronic Resource
Chinese
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