暴雨过程中雨水的入渗导致土体饱和度增加、吸力锐减并引起抗剪强度大幅下降。
Infiltration of rainwater during heavy rain increased soil saturation, sharp dropped in suction and caused a substantial decline in shear strength.
同时针对吸力对非饱和土强度的贡献进行了分析，利用试验成果对强度包线的线性和非线性进行了比较。
At the same time, the shear strength contributed from matrix suction was analyzed, and the differences between the linear failure envelope with the nonlinear failure envelope were compared.
首先，对非饱和黄土进行了土的吸力测试、抗剪强度试验、结构强度和非饱和土三轴试验。
Firstly, a series of unsaturated loess tests were carried out under matric suction testing, shear strength, structural strength, unsaturated triaxial tests.
因而，研究含水量与基质吸力和边坡土体强度的变化规律都具有很重要的工程意义。
As a result, the research on the relationship among water content and matric suction and the soil strength are of value to civil engineering projects.
本文通过室内吸力控制的非饱和土三轴剪切试验，研究上海地区软土的强度特征。
Some tri-axial tests were carried out herein to analyze unsaturated soil strength for Shanghai soft clay.
吸力对该膨胀土抗剪强度的贡献高于压实高岭土。
The contribution of suction to shear strength for the compacted expansive clay was more significant than that for a compacted kaolin.
当吸力相同时，原状样的峰值强度和剪胀势均高于压实样，这与原状样中铁锰结核的胶结作用有关。
As compared with the compacted specimens, the natural specimens were higher in the peak shear strength and the dilatancy due to the cementation effect of the iron and manganese oxides.
当吸力相同时，原状样的峰值强度和剪胀势均高于压实样，这与原状样中铁锰结核的胶结作用有关。
As compared with the compacted specimens, the natural specimens were higher in the peak shear strength and the dilatancy due to the cementation effect of the iron and manganese oxides.
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