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膨胀土的干湿循环性状及其在边坡稳定性分析中的应用
引用本文:崔溦,张志耕,闫澍旺.膨胀土的干湿循环性状及其在边坡稳定性分析中的应用[J].水利与建筑工程学报,2010,8(5).
作者姓名:崔溦  张志耕  闫澍旺
作者单位:天津大学,建工学院,天津,300072
基金项目:高等学校博士点基金,天津大学青年教师基金 
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。

关 键 词:膨胀土  干湿循环  性状  边坡稳定

Cyclic Behavior of Expansive Soils and Its Application in Slope Stability Analysis
CUI Wei,ZHANG Zhi-geng,YAN Shu-wang.Cyclic Behavior of Expansive Soils and Its Application in Slope Stability Analysis[J].Journal of Water Resources Architectural Engineering,2010,8(5).
Authors:CUI Wei  ZHANG Zhi-geng  YAN Shu-wang
Abstract: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.
Keywords:expansive soil  wetting and drying cycle  behavior  slope stability
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