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本文提出应力坐标上砂土液化过程中的剪胀线(面),动力极限破坏线(面)及液化线(面)等概念,用于系统地建立动荷下砂土的空间强度理论框架,并给出了确定这些线面的方法。对这些线面的物理特性进行了论证分析。与一些实验资料验证表明,这种将土的静态强度理论同土动力学的实践相结合的理论是令人满意的。籍助于此,作者期望能够克服现有理论的零散性,加速砂土液化理论的系统化发展。
In this paper, the concepts of dilatancy line (face), dynamic limit failure line (face) and liquefaction line (face) in sand liquefaction on the stress coordinate are proposed to systematically establish the spatial strength theoretical framework of sand under dynamic load. And gives the method to determine these line faces. The physical characteristics of these line surfaces were demonstrated and analyzed. The verification with some experimental data shows that this theory combining the static strength theory of soil with the practice of soil dynamics is satisfactory. Thanks to this, the author hopes to overcome the fragmentation of existing theories and accelerate the systematic development of sand liquefaction theory.