多年冻土地区公路路面评价指标探讨

A Discussion on the Evaluation Indexes of Asphalt Pavement in Permafrost Regions

路面性能评价是路面管理乃至路面设计的基础,而好的评价模型和评价指标选取是路面评价的关键.在路面评价模型中,为表征上述路面的使用性能,首先需要选取恰当的评价指标.多年冻土地区由于其低温和下覆特殊的多年冻土地基土,现有的路面评价方法体系不能直接应用于多年冻土地区,尤其是路面评价指标和一般地区有很大的差别.因此,研究和探索适合多年冻土区的路面评价指标和路面评价方法体系势在必行.结合多年冻土地区的气候和地质环境,在国道214姜路岭-清水河多年冻土段公路病害调查结果的基础上,分析了多年冻土地区公路路面使用过程中存在的主要问题,探讨了该区域内公路路面的评价指标及相应的养护维修措施,为多年冻土地区公路路面评价提供有益的借鉴.

Pavement evaluation is referring to the evaluation of pavement properties,which is the base of pavement management and design.It is very important to choose the evaluation indexes and appropriate model for pavement management.Highway in the permafrost regions is very particular owing to the cold climate and ice-rich permafrost.Thus,the pavement evaluation for ordinary regions is never suitable to evaluate the pavement in the permafrost regions.In other words,the evaluation indexes for the permafrost regions differ from those for the ordinary regions.So it is necessary to look for a suitable evaluation index system and evaluation models.Taking the cold climate in permafrost regions and the geology environments into consideration,the key problems of the highway pavement in the permafrost regions during operation at present are analyzed,and the evaluation indexes and the relevant maintain measures of road surface are also discussed in this paper.