人民长江2018，Vol.49Issue(5)：89-93,104,6.DOI:10.16232/j.cnki.1001-4179.2018.05.018
不同年代黄土动剪切模量和阻尼比试验研究
Experimental study on dynamic shear modulus and damping ratio of loess of different ages
摘要
Abstract
In order to study the influence of the formation age on the dynamic characteristics of loess,the Q4 Holocene loess, the Q3 late Pleistocene loess and the Q2 Middle Pleistocene loess are studied by resonant column test. The result shows that un-der the same conditions,the dynamic shear modulus G increases with the formation age;the dynamic shear modulus fitting with two common empirical models shows that the Davidenkov model is more accurate than the Hardin-Drnevich model,and the fit-ting parameters of the models are obtained;the Davidenkov model is used to fit the relationship between the maximum dynamic shear modulus and the consolidation stress of loess of different ages and the fitting parameters are determined;the damping ratio D increases with the increasing of the formation time,and the damping ratio is approximately linear with the shear strain in the semi-logarithmic coordinate system.关键词
黄土/形成年代/动剪切模量/阻尼比/共振柱试验Key words
loess/formation age/dynamic shear modulus/damping ratio/resonance column test引用本文复制引用
黄志全,张蒙飞,于怀昌,张振华,谭晔..不同年代黄土动剪切模量和阻尼比试验研究[J].人民长江,2018,49(5):89-93,104,6.基金项目
河南省科技创新人才计划(154100510006) （154100510006）
河南省重点科技攻关项目(152102210111,132102210113) （152102210111,132102210113）
新疆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) （201491105）
