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交通拥堵成为当今城市发展所面临的普遍问题,受地面资源的约束以及人们对环境品质要求的提高,世界各地越来越重视利用地下道路来解决城市交通和环境问题。在分析了城市地下道路出入口匝道与地上的差异基础上,结合国内外工程案例,研究了城市地下道路的出入口匝道总体布置、出入口设置形式、变速车道、分合流端视距保障等方面的设计技术,并应用于苏州星港街地下道路。研究结果表明,多点进出型城市地下道路出入口设计与地上道路存在差异,需要采用适合地下环境特点的线形指标以及交通安全设施,以提高行车安全,本研究也可为未来城市地下道路的出入口匝道设计和技术标准的制定提供参考。
Traffic congestion has become a common problem faced by urban development. Due to the constraints of ground resources and the improvement of people’s environmental quality, more and more people around the world pay more attention to the use of underground roads to solve urban traffic and environmental problems. Based on the analysis of the differences between the ramp and the ground of the entrance and exit of urban underground roads and the engineering cases both at home and abroad, the design techniques of overall layout, entrance and exit settings, speed lanes, , And used in Suzhou Xingang Street underground road. The results show that there is a difference between the design of entrance and exit of underground road in multi-point-in and out-going cities and the road above ground. The linear indicators and the traffic safety facilities suitable for the underground environment need to be adopted to improve traffic safety. Design and technical standards for reference.