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为研究主线连通性在时间维度上的变化对高速公路施工事故救援路线选择的影响,分析影响救援路线管理单元划分的因素,提出影响主线连通性的主要控制工程选择标准及其施工进度的时间参数序列。引入时间参数,把高速公路建设项目线性实体分为周期点元、周期线元、即时点元、即时线元进行数学描述,建立以控制工程施工进度为变量的动态管理单元划分模型并基于路阻函数建立路网优化模型,实现对应急救援路网的动态管理。研究成果在重庆沿江高速公路应用表明,当时间参数分别小于14,20个月和大于36个月时,对比优化前应急救援路网,救援时间分别缩短约6,26和37 min,提高了救援效率。
In order to study the impact of mainline connectivity changes in time dimension on the selection of rescue route for highway construction accidents, the factors that affect the division of rescue route management units are analyzed. The selection criteria of main control projects that affect mainline connectivity and the time parameters of construction schedule sequence. By introducing the time parameter, the linear entity of expressway construction project is divided into periodic point element, periodic line element, instantaneous point element and instant line element for mathematical description. The dynamic management unit division model which takes control of construction schedule as a variable is established. Function to establish a road network optimization model to achieve the dynamic management of emergency rescue road network. The results of the application in Chongqing Yanjiang Expressway show that when the time parameters are less than 14,20 months and more than 36 months respectively, compared with the pre-optimization emergency rescue road network, the rescue time is shortened by about 6, 26 and 37 minutes, respectively, effectiveness.