阿拉尔盐渍土路基盐-冻胀破坏机理的研究

发布时间：2018-04-06 21:26

本文选题：路基　切入点：盐-冻胀　出处：《施工技术》2015年S2期

【摘要】：新疆阿拉尔市每年冬春季节其沥青混凝土道路出现不同程度的盐-冻胀变形破坏现象。通过对虹桥路向北延伸段试验路段路面破坏最为严重的两处不同深度路基填筑层现场取土样分析,得出路基填筑层内的水泥土稳定基层因盐胀冻胀产生疏松破碎变形是导致阿拉尔市沥青混凝土道路季节性破坏的主要因素;通过对试验路段盐分、温度、路面竖向变形、地下水位及秋冬季水分变化分析,得知水稳层的破坏变形是其结构层内盐分、温度、水分共同作用的,因此对于该地区新建改建的道路要做好控温限盐防水的措施。
[Abstract]:In the winter and spring seasons of Alar City, Xinjiang, different degrees of salt-frost deformation and failure appear in asphalt concrete road.Based on the field sampling analysis of the two subgrade filling layers with different depth, which are the most seriously damaged road surface in the test section of Hongqiao Road extending northward,It is concluded that the loose and broken deformation caused by salt heaving and frost heaving is the main factor leading to seasonal damage of asphalt concrete road in Alar City.Based on the analysis of groundwater level and water change in autumn and winter, it is found that the damage and deformation of water stable layer is caused by the interaction of salt, temperature and moisture in the structure layer. Therefore, it is necessary to do a good job in controlling temperature, salt and waterproofing for the newly built and rebuilt roads in this area.
【作者单位】：塔里木大学水利与建筑工程学院;塔里木大学机械电气化工程学院;长春工程学院土木工程学院;
【基金】：兵团科技计划项目资助(2010ZJ05)
【分类号】：U416.1

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