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一、概 述 新建八达岭过境公路又名“新建昌平至八达岭公路”,起于昌平县十三陵道口,止于延庆县莲花池妫水河大桥南头,全长38.4公里,为我国第一条山岭区二级公路。笔者曾参加这条公路勘察设计全过程,谨就此来谈谈山区二级公路的测设及经验教训,难免有一定局限性,请读者指正。 1974年交通部、北京市交通局安排委托二院承担本路的勘测设计。要求按两阶段进行设计,路基、路面宽度全部采用平原微丘区的二级公路技术标准(即路基宽度12米,
I. Overview The new Badaling Transit Highway, also known as the “New Changping-Badaling Highway”, starts at the crossing of the Ming Tombs in Changping County and ends at the south head of the Lianhuachi Puddle River Bridge in Yanqing County, with a total length of 38.4 kilometers, making it the first mountain in China District two highway. I have participated in the entire process of road survey and design, would like to talk about this mountain highway survey and set the experience and lessons, will inevitably have some limitations, please correct me readers. In 1974, the Ministry of Communications and the Beijing Bureau of Transportation arranged for commissioning two houses to undertake the survey and design of this road. It is required to design according to two stages. All subgrade and pavement width adopt the technical standards of the second grade highway in the plain micro-hill area (ie the subgrade width is 12 meters,