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土结构性不仅赋存于少数灵敏度较高的饱和软粘土中,天然沉积硬粘土或多或少也受到土结构性的影响,会表现出与其相应重塑土截然不同的力学特性。针对依托工程试验场区的天然沉积硬粘土,通过对不同区域、不同深度的原状土样的颗粒粒度分析试验、高压固结试验等一系列室内土工试验,对该区域硬粘土的特性进行了探讨,并采用灵敏度参数(St和S?)、屈服应力比(YSR)对其结构性进行了评价。
Soil structural properties are not only found in a few highly saturated soft clays, but also naturally hardenable hard clays are more or less affected by soil structure and exhibit different mechanical properties than their corresponding remodeled soils. Aiming at the natural sedimentary hard clay relying on the experimental test area, the characteristics of hard clay in this area are discussed through a series of indoor geotechnical tests on the particle size analysis and the high pressure consolidation of undisturbed samples of different regions and depths , And its structural properties were evaluated by using sensitivity parameters (St and S?) And yield stress ratio (YSR).