各类土的动剪切模量和阻尼比的研究

The research on dynamic shear modulus and damping ratio of all kinds of soil

土的动剪切模量和阻尼比是土动力学特性的重要参数,也是土层和地基地震反应分析中必备的动力参数。根据国内外土的动剪切模量和阻尼比的发展和研究现状,对比分析了确定土的动剪切模量和阻尼比的现场测试和实验室测试2种测试方法的优缺点,并分别对无黏性土、黏性土、其他类土以及重塑土的动剪切模量和阻尼比的国内外研究成果进行了总结和评述,指出了现有研究工作中有待解决和完善的问题,提出了今后的发展方向和研究设想。

The dynamic shear modulus and damping ratio of soils are the important parameters in soil dy‐namics characteristics ,and also the must parameters in analyzing soil layers and base earthquake response. According to the domestic and overseas researching status and the development on soil dynamic shear mod‐ulus and damping ratio ,this paper makes a comparative analysis on the advantages and disadvantages of testing in field and testing in laboratory on identifying dynamic shear modulus and damping ratio ,summari‐zes and comments to the domestic and overseas researching results related to dynamic shear modulus and damping ratio of cohesiveless soil ,cohesive soil ,remolded soil ,and other kinds of soil. It points out the ex‐isting problems in current research and the problems needed to improve ,and puts forward the future devel‐oping direction and research ideas on this topic.