摘要Triaxial shear experimental research is conducted on intact unsaturated aeolian soil, remolded unsaturated aeolian soil, and intact saturated aeolian soil under three different dry densities and seven different moisture contents using the true triaxial apparatus TSW-40. Moreover, the relationship between structural parameters and structural strength indexes of intact unsaturated aeolian soil is explored. Test results show a negative correlation between structural parameter ratio mε/mε0 and moisture content w but a linear positive correlation between structural parameter ratio mε/mε0 and dry density ρd. The functional relationships between the ratio of structural strength indexes tan φ/tan φ0 and c/c0 and structural parameter ratio mε/mε0 are all a quadratic function. The quantitative index or value of synthetic structural state Pcs, which reflects the effect of different factors on the structural characteristics of intact unsaturated aeolian soil synthetically, is constructed. This paper considers the strength indexes of intact aeolian soil under natural moisture contents, so that the shear strength indexes of intact unsaturated aeolian soil under discretional structural state can be calculated. This research provides a novel method for the practical use of shear strength of intact unsaturated aeolian soil for aeolian soil engineering in the west of Liaoning Province.
Abstract：Triaxial shear experimental research is conducted on intact unsaturated aeolian soil, remolded unsaturated aeolian soil, and intact saturated aeolian soil under three different dry densities and seven different moisture contents using the true triaxial apparatus TSW-40. Moreover, the relationship between structural parameters and structural strength indexes of intact unsaturated aeolian soil is explored. Test results show a negative correlation between structural parameter ratio mε/mε0 and moisture content w but a linear positive correlation between structural parameter ratio mε/mε0 and dry density ρd. The functional relationships between the ratio of structural strength indexes tan φ/tan φ0 and c/c0 and structural parameter ratio mε/mε0 are all a quadratic function. The quantitative index or value of synthetic structural state Pcs, which reflects the effect of different factors on the structural characteristics of intact unsaturated aeolian soil synthetically, is constructed. This paper considers the strength indexes of intact aeolian soil under natural moisture contents, so that the shear strength indexes of intact unsaturated aeolian soil under discretional structural state can be calculated. This research provides a novel method for the practical use of shear strength of intact unsaturated aeolian soil for aeolian soil engineering in the west of Liaoning Province.
基金资助:Supported by the National Natural Science Foundation of China (No.50978131);the Specialized Research Fund for Doctoral Program of Higher Education (No.20112121110004)
通讯作者:
LI Qing-wen,E-mail address:lgjzlqw@163.com
E-mail: lgjzlqw@163.com
引用本文:
李庆文, 张向东, 张晋. 原状非饱和风积土结构性参数与强度指标关系的试验研究[J]. Journal of Highway and Transportation Research and Development, 2016, 10(2): 8-15.
LI Qing-wen, ZHANG Xiang-dong, ZHANG Jin. Experimental Research on Relationship between Structural Parameters and Structural Strength Indexes of Intact Unsaturated Aeolian Soil. Journal of Highway and Transportation Research and Development, 2016, 10(2): 8-15.
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2016, Vol. 10 
