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依据土的结构性观点,提出了一个能够反映黄土增湿特性的结构性定量化参数—结构性增湿系数。并利用侧限压缩试验对甘肃省兰州市、陕西省杨凌区2个采样地黄土进行不同含水率和不同压力条件下黄土增湿特性的研究。结果表明:压力和含水率对黄土的结构性参数具有显著影响;相同压力条件下,含水率越大,结构性增湿系数越大,且二者之间呈现非线性的关系;相同含水率条件下,黄土的结构性增湿系数总趋势上随压力的增大而增大;结构性增湿系数在受水和荷载作用下变化规律明显,能够较好地反映黄土的结构特性与增湿变形特性。
According to the structural view of soil, a structural quantitative parameter, structural humidification coefficient, which can reflect the humidification characteristics of loess is proposed. In addition, the humidification characteristics of loess under different water cut and pressure conditions were studied using confined compression tests on two loess samples from Lanzhou, Gansu Province and Yangling, Shaanxi Province. The results show that pressure and water content have significant influence on the structural parameters of loess. Under the same pressure, the larger the water content, the larger the coefficient of structural humidification, and the non-linear relationship exists between the two. The same moisture content , The general trend of structural humidification coefficient of loess increases with the increase of pressure. The structural humidification coefficient changes obviously under the action of water and load, which can well reflect the structural characteristics and humidification deformation of loess characteristic.