摘要
膨胀土的干湿循环性状在膨胀土边坡的稳定性分析中占有重要地位。通过膨胀土的干湿循环试验,得出膨胀土性状变化的基本规律：干湿循环导致膨胀土性状的衰减,在经过4~5次干湿循环之后,其性状改变趋于稳定。从土的微观结构出发,对这些基本规律给出解释;并将这些基本规律应用到膨胀土边坡的稳定分析中,得出了符合工程实际的计算结果。
The cyclic swelling behavior of expansive soils plays an important role in slope stability analysis.Through the laboratory tests of wetting and drying cycles, the basic variable rules of expansive soil behavior are obtained as follows： the wetting and drying cycle would lead to the reduction of expansive soil behavior,and the equilibrium cycle would be ranged between 4～5 times.Based on the analysis of soil microstructure,these basic rules about the behavior change of expansive soils are interpreted.By using these basic rules in slope stability of expansive soils,the computing results according with engineering practices are obtained.
出处
《水利与建筑工程学报》
2010年第5期24-27,共4页
Journal of Water Resources and Architectural Engineering
基金
高等学校博士点基金(200800561091)
天津大学青年教师基金(5110152)
关键词
膨胀土
干湿循环
性状
边坡稳定
expansive soil
wetting and drying cycle
behavior
slope stability
