为了解决含双向不分道行驶的狭窄支路路段交通网络配流问题,提出基于路段宽度、单车道通行能力、双向流量比例等因素的支路路段通行能力近似公式;通过扩展支路路段费用的表达形式,建立了分析支路路段双向车流相互作用的交通网络均衡模型。鉴于支路路段费用函数不是关于方向流量的凸函数,采用最短路径上全有全无分配并结合相继平均法设计了模型的求解算法。结果表明:该近似公式与模拟结果基本吻合;含双向不分车道行驶支路路段的交通网络均衡模型与算法,有效地推广了常规配流方法,可用于解决实际工程问题。
Due to lack of equilibrium analysis method for traffic network with mixed-use local road, a local road capacity function was proposed, which was related to the road width, capacity of lane and bi-directional traffic ratio. Through extending the expression of local road cost, an equilibrium analysis method was extended to consider traffic network with mixed-use local road, and all-or-nothing assignment method as well as method of successive average were employed to solve the equilibrium analysis model which could accommodate the non-concave character of the local road cost function on directional road traffic flow. The results show that the values of the capacity function have high consistency with the results of traffic flow simulation of local road and the extended equilibrium analysis method for traffic network with mixed-use local road is valid and can be used to solve the problems in actual projects.