【摘要】 本文对地基土动力特性测试中几个问题的研究进展进行评述,内容包括:结构性影响问题;最大动剪切模量的测试问题;非弹性阶段的动剪模量测试问题;阻尼比的测试问题;动强度和液化特性的测试问题等。文中认为室内和现场试验各有优势和缺陷,各有适应范围,特别是由于土的结构性影响,有时单独采用室内测试不能有效地达到研究的目的,必须进行室内和现场的联合测试。更多还原

【Abstract】 A review on advancement of research on dynamic characteristics of natural foundation soils is given.The problems to be discussed are:1.soil fabric and its effect on dynamic characteristics of soil;2.the maximum dynamic shear modulus and its determination;3.the dynamic shear modulus of soil under non-elastic deformation and its determination;4.the damping ratio of soil and its determination;5.the dynamic strength and liquefaction characteristics of soil.It is concluded that,due to the structure effect of soil,the combined measurement of laboratory experiment and in-situ test is the best way in determining the dynamic characteristics of natural foundation soil.更多还原