基于微观交通仿真的枢纽互通建设交通组织方案实例研究

Research on Traffic Organization Scheme of Hub Interchange Based on Microscopic Traffic Simulation

高速公路施工区交通系统本身具有其复杂性和特殊性,尤其是枢纽互通区域由于场地大、跨线桥多,交通组织更加复杂,采用现场试验的方法往往由于人力、物力和财力以及其他条件的限制,导致缺乏足够的样本而难以得出信服的结论。以京港澳高速京石段彭家庄枢纽互通实例作为研究对象,结合我国高速公路养护施工区实际情况,将微观交通仿真技术引入高速公路施工区交通系统的研究。通过微观仿真方法,对京港澳高速京石段彭家庄枢纽互通的三种施工组织方案实施评估,实现了施工组织的优化,避免了改扩建施工期间带来交通拥堵,节省了施工经费,高效地完成了改扩建交通组织的实施,具有重要的实际应用和推广价值。

The traffic system in expressway work zone has its complexity and particularity, especially in hub interchange area due to the large site scale, multiple overpasses, the traffic organization is much more complicated, hence it is usually difficult to draw convincing conclusions by field tests due to constraints on human, material and financial resources and other conditions, as well as due to lack of enough samples. In this paper taking the Pengjiazhuang Interchange on Beijing-Shijiazhuang section of Beijing-Hong Kong-Macao Expressway as the research object, combining with the actual situation of highway maintenance area, microscopic traffic simulation technology is introduced to study the traffic system in expressway construction area. Through the micro simulation method three construction organization plans for Pengjiazhuang Interchange is evaluated, construction organization optimization is realized, which has avoided traffic congestion during the expansion construction period, saved construction cost, and effectively completed the traffic organization of upgrading project, with essential value for practice and application.