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本文介绍了近二十年来在我国水利水电科学研究院进行饱和土振动液化试验研究中发现的几个重要特性。它们包括应力状态对饱和砂土振动液化过程中孔隙水压力变化的影响,颗粒排列对砂土骨架结构振动稳定性的影响,饱和砂土在振动作用下孔隙水压力的产生、消散和扩散机理,以及粉土(少粘性土)液化可能性的评价准则等等。这些特性都是当今研究液化问题中被重视和感兴趣的题目。文中表达了作者对这些问题的看法。
This paper introduces several important characteristics found in the study of saturated soil vibration liquefaction conducted by the Institute of Water Resources and Hydropower Research, China, in the past two decades. They include the effect of stress state on the change of pore water pressure in the process of liquefaction of saturated sand, the effect of particle arrangement on the vibration stability of sand skeleton structure, the generation, dissipation and diffusion mechanism of pore water pressure under saturated vibration of saturated sand. And evaluation criteria for the liquefaction potential of silt soil (less cohesive soil). These properties are the subject of attention and interest in the study of liquefaction problems today. The author expressed his opinion on these issues.