中文摘要：

在不饱和的广泛的泥土的稳固液体的相互作用能基于他们的物理机制被划分成毛细作用和吸附效果。为不饱和的土壤的最组成的模型根据毛细作用机制被建议，忽略到机械、水力的行为的吸附效果的贡献。然而，为广泛的泥土，在低粘性泥土比那导致更复杂的行为的特征的吸附效果不能被忽略。根据这，为不饱和的广泛的泥土的一个新二进制媒介的模型被建议，包含源自的稳固液体的相互作用的考虑毛状并且吸附机制同时。第一，我们假设那广泛的泥土是二理想的部分的混合物，即理想的毛细作用部分和理想的吸附建模其各个为相应理想的部分是可得到的，被建立。而且，参予功能被用来反映毛细作用效果和吸附效果的度。最后，预言在巩固测试和在文学出版的轮转的控制吸测试的结果上被执行。在把预言的结果与测试结果作比较以后，确定的模型罐头份量上在广泛的泥土预言机械、水力的行为，这被说明。

英文摘要：

Solid-fluid interactions in unsaturated expansive clays can be divided into capillarity and adsorption effects based on their physical mechanisms. Most consti- tutive models for unsaturated soils are proposed on the basis of the capillarity mechanism, ignoring the contributions of the adsorption effect to mechanical and hydraulic behaviors. For expansive clays, however, the adsorption effect which leads to more complex behavioral character- istics than that in low plasticity clays cannot be ignored. In the light of this, a new binary-medium model for unsatu- rated expansive clays is proposed, involving a consider- ation of the solid-fluid interactions stemming from the capillary and the adsorption mechanisms at the same time. Firstly, we assume that expansive clay is a mixture of two ideal parts, i.e. the ideal capillarity part and the ideal adsorption part, and then an ideal capillarity model and an ideal adsorption model, each of which is available for the corresponding ideal part, are established. Furthermore, a participation function is used to reflect the degrees of capillarity effect and adsorption effect. Finally, predictions are performed on the results of the consolidation tests and the cyclical controlled-suction tests published in literature. After comparing predicted results with test results, it is illustrated that the established model can quantitatively predict mechanical and hydraulic behaviors in expansive clays.