延崇高速公路河北段典型隧道工程设计综述与展望

Summary and Prospect of Typical Tunnel Engineering Design in Hebei Section of Yanqing-Chongli Expressway

延庆至崇礼高速公路河北段为交通运输部首批绿色公路典型示范工程,是新一代国家交通控制网和智慧公路试点。该段高速公路主线已建成通车,延伸工程及赤城支线即将建成通车。结合近四年的后期服务与施工实践,对本项目隧道工程设计进行了总结分析,特长螺旋隧道安全运营综合保障措施、严寒地区隧道防冻保温综合保障措施、螺旋隧道节能环保设计等技术措施,可为今后类似工程的设计和施工提供借鉴和参考。

The Hebei section of Yanqing-Chongli expressway is the first batch of typical demonstration projects of green highway by the Ministry of Transport.It is the pilot of a new generation of national traffic control network and intelligent highway.The main line of this section of expressway has been completed and opened to traffic,and the extension project and Chicheng branch line will be completed and opened to traffic soon.In combination with the later service and construction practice in recent four years,the tunnel engineering design of the project is summarized and analyzed.The technical measures such as comprehensive guarantee measures for safe operation of extra-long spiral tunnel,comprehensive guarantee measures for freeze protection and thermal insulation of tunnel in severe cold area,energy-saving and environmental protection design of spiral tunnel and etc.can provide reference for the design and construction of similar projects in the future.