青康公路水泥混凝土路面和沥青混凝土路面病害调查与分析

Disease Investigation and Analysis of Cement Concrete Pavement and Asphalt Concrete Pavement of Qing-Kang Highway

多年冻土地区路基路面病害率高,不同路面的病害形式表现也不尽相同。根据青康公路姜路岭至清水河段多年冻土区水泥混凝土路面与沥青混凝土路面大量调查资料,对各种病害发育性状及分布现状进行统计,详细计算每公里路面的单项病害率和总病害率。结果显示:水泥混凝土路面比沥青混凝土路面病害数量多,规模大,以破碎板、纵向裂缝为主;沥青混凝土路面沉陷最为显著,其次是网裂、波浪,沥青的吸热作用严重影响路基稳定,不利于保护多年冻土。进一步对水泥混凝土路面和沥青混凝土路面病害作了分类分析,研究主要病害机理及规律,正确地评价多年冻土区公路病害。

The road surface and subgrade have high disease rate in permafrost regions,and the diseases on different pavement are diverse.On the basis of the investigation of Jiangluling-Qingshuihe segment of Qing-Kang Highway,a particular statistical result about the distributing rules and diseases developing characters of cement concrete pavement and asphalt concrete pavement is achieved.Sheet crack and longitudinal crack are the main diseases happened on cement concrete pavement;however,depression and map crack are the main diseases happened on different pavement, further more, comp mechanism and an objective appraisal of t asphalt concrete pavement. It showes that the diseases arative analysis are done to research the representative he pavement diseases in permafrost regions is given rates of disease