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本文解决了三轴仪内饱和砂试样剪切波速的量测技术问题,并对其原理进行了阐述,使动三轴仪又具有测量微小应变下饱和砂试样的动剪模量的性能。在此基础上,通过试验得到了饱和砂土超声剪切模量和平均有效主应力、孔隙比、有效主应力比及排水条件之间的关系;饱和破土静力抗剪强度和超声剪切模量之间的关系;饱和砂土动力液化性质和初始超声剪切模量之间的关系。
This paper solves the technical problem of measuring the shear wave velocity of the saturated sand sample in the triaxial apparatus, and explains the principle of the triaxial apparatus. The dynamic triaxial apparatus has the property of measuring the dynamic shear modulus of the saturated sand sample under the small strain. . On this basis, the relationship between ultrasonic shear modulus and mean effective principal stress, void ratio, effective principal stress ratio, and drainage conditions of saturated sandy soil was obtained through experiments; static shear strength and ultrasonic shear modulus of saturated soils were obtained. The relationship between the quantities; the relationship between the dynamic liquefaction properties of saturated sand and the initial ultrasonic shear modulus.