高速公路改扩建方式和交通组织发展研究总结

Study and Summary of Expressway Reconstruction, Extension and Traffic Organization Development

摘要:

随着早期建设的高速公路使用寿命逐步萎缩以及近些年车辆数激增带来的巨大交通压力，我国已进入高速公路改扩建的快速发展阶段。为能够全面和深入了解我国高速公路改扩建的发展规律和特征，整理统计和分析了新近我国实施的117个高速公路改扩建项目，里程规模超10 000 km。首先，从高速公路改扩建规模、时间、方式、车道数量等方面总结我国高速公路改扩建方式的发展特征；其次，分析了改扩方式对改扩建期间施工交通组织方式的影响，对改扩建期间的保通方向、保通车道数、保通车型及保通速度进行整理分析，总结我国高速公路改扩建施工交通组织方式的发展规律和特点。

Abstract:

With the gradual shrinking of the service life of early built expressways and the huge traffic pressure brought by the surge of vehicles in recent years, China has entered the rapid development stage of expressway reconstruction and extension. In order to have a comprehensive and in-depth understanding of the development law and characteristics of the expressway reconstruction and extension in China, 117 expressway reconstruction and extension projects implemented recently in China are sorted out and analyzed. The mileage scope is more than 10 000 km. Firstly, the development characteristics of expressway reconstruction and extension methods are summarized from the aspects of scale, time, mode and lane number. Secondly, the influence of the reconstruction and extension mode on the traffic organization mode during the reconstruction and expansion period is analyzed. The traffic direction, traffic lane number, same vehicle type and traffic speed during the reconstruction and extension period are sorted out and analyzed. The development law and characteristics of the traffic organization for the expressway reconstruction and extension in China are summarized.