高原地区道路连续回头曲线布设的应用实践

摘要

With laying of switch -back curves in ridge crossing lines at K11 +700 ~k14 +200 section in Bange County to Baojie Town Highway Reconstruction Project in Nagqu Prefecture of Tibet Autonomous Region as an example,and in combination with the provisions in the existing specifications for laying indices of switch -back curves,this paper analyzes determination of considerations for route schemes, laying causes of switch -back curves,laying modes,selection of laying standards in design of highways in plateau region and design process to provide a reference for similar designs.%以西藏自治区那曲地区班戈县至保吉乡公路改建工程中 K11＋700～K14＋200段越岭线回头曲线布设为例，结合现行规范中对回头曲线布设指标的规定，对高原地区公路设计中路线方案确定因素，回头曲线设置原因、设置方式、设置标准选用及设计过程进行分析，供类似设计参考。