中文摘要：

利用TSW-40型土壤真三轴仪对不同干密度与不同含水率的原状非饱和风积土、重塑性非饱和风积土和原状饱和风积土试样进行三轴剪切试验,探讨了原状非饱和风积土的结构性参数与强度指标的关系。研究结果表明：非饱和风积土结构性参数比mε/mε0与w呈现负相关性函数关系,与ρd呈现线性正相关性函数关系,非饱和风积土强度指标比（tanφ/tanφ0,c/c0）与结构性参数比mε/mε0均满足二次抛物线函数关系;构造出能综合反映非饱和风积土结构性影响因素的定量指标——综合结构状态变量Pcs,结合原状风积土天然含水率下的强度指标,可在较大范围求解给定结构状态下非饱和风积土的强度指标。

英文摘要：

Triaxial shear experimental research on intact unsaturated aeolian soil,remolded unsaturated aeolian soil and intact saturated aeolian soil with different dry densities and moisture contents is conducted by using TSW- 40 soil true triaxial apparatus, and the relationship of structural parameters with structural strength indexes of intact unsaturated aeolian soil is explored. The test result shows that（ 1） the functional relationship between structural parameter ratio mε/ mε 0and moisture content w is negative correlation;（ 2）the functional relationship between mε/ mε 0and dry density ρdis the linear positive correlation;（ 3） the functional relationship of the ratio of structural strength indexes tan φ / tan φ0and c / c0 with structural parameter ratio mε/ mε 0are all the quadratic parabolic function. The quantitative index which reflects the structural influencing factors on characteristics of intact unsaturated aeolian soil,named synthetical structural state variable Pcs,is put forward. Considering the strength indexes of intact aeolian soil with natural moisture content,the shear strength indexes of intact unsaturated aeolian soil with discretional structural state can be calculated.