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State-dependent Soil-water Characteristic Curves (SDSWCCs) of Weathered Soils

机译：风化土壤的国家依赖土壤 - 水特征曲线（SDSWCCS）

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摘要

It is generally recognized that unsaturated soil behaviour and properties are governed by two stress state variables: soil suction and net stress. Although a soil-water characteristic curve (SWCC) can provide a measurement of the water retention ability of an unsaturated soil, very often only a single stress state variable, i.e. soil suction, is considered in experimental programs. In addition, the volume changes of soil specimens during the determination of SWCC have often been ignored. Some recentexperimental studies have demonstrated that the other stress state variable, i.e. net stress, is also important and needs to be considered. Ignoring the effects of net stress and volume changes on measuring any soil property of an unsaturated soil may impose severe constraints in the development and verification of advanced constitutive soil models and hence may affect the accuracy of numerical predictions significantly.
机译：通常认识到，不饱和土壤行为和性质受到两个应力状态变量的管辖：土壤吸力和净应力。 尽管土壤 - 水特性曲线（SWCC）可以提供不饱和土的水保持能力的测量，但是在实验程序中考虑了不仅仅是单个应力状态变量，即土壤吸力。 此外，在确定SWCC期间土壤样本的体积变化通常被忽略。 一些近期试验性研究表明，另一个应力状态变量，即净压力，也很重要，需要考虑。 忽视净应力和体积变化对测量不饱和土壤的任何土壤的影响可能对先进组成的土壤模型的开发和验证产生严重的限制，因此可能会显着影响数值预测的准确性。

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