工程地质学报2017，Vol.25Issue(1)：50-57,8.DOI:10.13544/j.cnki.jeg.2017.01.007
断层泥动剪切模量和阻尼比影响因素试验研究
EXPERIMENTAL STUDY ON INFLUENCING FACTORS OF DYNAMIC SHEAR MODULE AND DAMPING RATIO OF FAULT GOUGE
摘要
Abstract
Dynamic shear modulus and damping ratio test of fault gouge with different dry density values or water contents are performed using GDS resonant column system.The results show that the relationship between dynamic shear modulus and dynamic shear strain can be well fitted by Hardin-Drnevich hyperbolic model.The dynamic shear modulus and the damping ratio both increase with the dry density,while decrease with water content.Experimental points of normalized dynamic shear modulus are mainly located in the range of the G/Gmax ～γ curve of sand which is proposed by Seed and Idriss,and in accordance with the trend of cohesive soil which is proposed by Sun and Seed.The damping ratio changes linearly with the dynamic shear strain under semilog coordination.The fitting formula is suggested.关键词
断层泥/动剪切模量/阻尼比/含水率/干密度/共振柱试验Key words
Fault gouge/Dynamic shear modulus/Damping ratio/Water content/Dry density/Resonant column test分类
天文与地球科学引用本文复制引用
黄志全,吴超,毕理毅,张瑞旗,张振华..断层泥动剪切模量和阻尼比影响因素试验研究[J].工程地质学报,2017,25(1):50-57,8.基金项目
河南省科技创新人才计划(154100510006),河南省重点科技攻关项目(152102210111),新疆维吾尔自治区高层次人才引进工程,新疆维吾尔自治区科技援疆(201491105)资助. （154100510006）
