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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 disease rate of subgrade and pavement in permafrost areas is high, and the performance of diseases on different roads is also different. Based on a large amount of survey data on cement concrete pavement and asphalt concrete pavement of permafrost zone from Jianglingling to Qingshuihe section of Qingkang Highway, statistics are made on the developmental traits and distribution status of various diseases, and the individual disease rate and total disease rate per kilometer of pavement are calculated in detail. The results show that the cement concrete pavement is more numerous than the asphalt concrete pavement, the scale is large, mainly by the crushing plates and the longitudinal cracks; the subsidence of the asphalt pavement is most notable, followed by the net cracking, waves and the endothermic effect of asphalt seriously affecting the roadbed stability, Not conducive to the protection of permafrost. Further classified the disease of cement concrete pavement and asphalt concrete pavement, studied the main disease mechanism and law, correctly evaluated the road disease in permafrost area.