摘要
阿拉尔市地处季节性冻土灾害区和严重盐胀灾害区。城市道路在建成后就遭受了严重的盐胀-冻胀变形破坏。本文通过对严重变形破坏路段的路基土与道路两侧绿化带土体的含盐量进行对比检测试验,试验分析认为阿拉尔市区道路的变形类型属于盐胀-冻胀变形。对其盐胀-冻胀变形破坏的原因与机理进行分析研究,提出要解决阿拉尔市道路盐胀-冻胀变形问题,需要在控制路基盐分、含盐量的基础上,必须要考虑地表水及地下水对路基盐胀-冻胀的影响。
Alar is located in the disaster areas with the seasonal frozen soils and the salt expansion. The urban roads in Alar are suffering the serious salt expansion-frost heave deformation. Through the tests on the serious deformation of the road failure section, the contrast tests are carried out with the salt content in the soil for the green belts. The results show that the deformation of the urban roads belongs to the type of deformation with the salt expansion and frost heave. The reasons and the mechanism of the salt expansion and frost heave deformation are studied. In order to settle the problems of the salt expansion and frost heave deformation, it is put forward that the influence of the surface water and the groundwater to the salt expansion and frost heave of the roads should be considered based on the controlling of the salinity and the salt content in the subgrade.
出处
《工程勘察》
CSCD
北大核心
2010年第10期28-31,共4页
Geotechnical Investigation & Surveying
关键词
盐渍土路基
硫酸盐渍土
盐胀-冻胀变形
残余变形
saline soil subgrade
sulfate saline soil
salt expansion-frost heave deformation
residualdeformation
