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分别建立了城市快速路苜蓿叶互通立交合流影响区、分流影响区、交织区的端部外侧车道交通量预测模型和车头时距分布模型,根据实测数据标定了快速路苜蓿叶互通立交各区域的通行能力模型;综合上述模型建立了苜蓿叶互通立交整体通行能力计算模型,应用该模型确定了苜蓿叶互通立交的通行能力,并应用仿真方法进行了验证。结果表明:所建立的模型为研究快速路互通立交的通行能力提供了理论基础。
The traffic volume forecasting model and the headway distance distribution model of the outer side lane of the alfalfa intercourse influence area, the diversion influence area and the interlacing area of the urban expressway were established respectively. According to the measured data, Through the above model, the calculation model of overall capacity of cloverleaf leaf interchange was established. The model was used to determine the capacity of alfalfa leaf interchange, and the simulation was used to verify the capacity. The results show that the established model provides a theoretical basis for studying the capacity of expressway interchange.