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本文分为两部份,一、我国高速公路的筹建概况。简介八条高速公路(总长约860公里)以及按高速公路线形设计的九条一级公路与汽车专用公路(总长约1475公里)的基本情况;二、对若干设计问题的认识。分别讨论分期修建高速公路的路基宽度,半幅(双车道)高速公路,高速公路的占地面积,通道设置间距及净空标准,路线的平纵面设计等六个问题,并介绍有关指标,供参考。
This article is divided into two parts, one, overview of the construction of our country’s expressway. Brief introduction of the eight highway (total length of about 860 km) and according to the highway design of the nine first class highway and car highway (total length of about 1475 kilometers) of the basic situation; Second, a number of design issues. Discuss the six issues of subgrade width, half-width (two-lane) expressway, expressway area, clearance setting and clearance standard for lane construction of expressway, design of flat-surface of route and so on, and introduce relevant indexes for reference .