【摘要】 城市中同步施工的基础设施建设项目逐渐增多,时间和空间上的关联与交互导致城市道路多施工作业区与城市交通之间的矛盾日益突出。首先将工程实践中多个占道施工作业同时进行,距离小于1 000 m,方向重合、平行或交叉的情况初步定性界定为城市道路多施工作业区。进而结合行程时间变异系数、交叉口延误和驾驶员路径选择意愿,提出直线式多施工作业区关联指数的计算模型,定量表征直线式多施工作业区相互间的关联程度,以确定施工作业区表现为多施工还是单施工作业区的特点。最后以郑州市两处直线式多施工作业区为例,采用实地调查数据和VISSIM仿真,计算得到相应的关联指数值分别为0.34和0.55,验证方法的可行性和合理性,从而为后续城市道路多施工作业区通行能力的研究提供参考。更多还原

【Abstract】 Urban infrastructure construction projects which are implemented simultaneously increase gradually. Association and interaction of time and space lead to the conflict between multi-work zones in the road network and urban traffic operation. In engineering practice,when several work zones are implemented simultaneously,distances are less than 1000 m,and the relevant direction is parallel,coinciding or intersecting,the phenomenon is defined as multi-work zones. Correlation index is then used to analyze the degree of association between the work zones. Considering travel time variation coefficient,intersection delays and driver routing wishes,the calculation method of correlation index is proposed.Two linear multi-work zones in Zhengzhou City are finally taken for case study. Based on the field survey data and VISSIM simulation,corresponding correlation index values are 0. 34 and 0. 55,respectively.Results testify the feasibility and rationality of the calculation method,so as to provide a reference for following research on the work zone capacity.更多还原