硅酸盐通报2017，Vol.36Issue(8)：2810-2815,6.
不同含水率下赤泥改良土的动弹模及阻尼比研究
Study of Dynamic Modulus and Damping Ratio of Loess Solidified by Red Mud under Different Water Content
摘要
Abstract
In order to study the kinetic parameters of loess solidified by red mud under different water conditions, the modified soil under different water content was studied by GDS dynamic triaxial instrument at different frequencies.The effects of vibration time, moisture content and loading frequency on the dynamic modulus and damping ratio of modified soil were studied.The experimental results show that the dynamic modulus keeps with the increase of the vibration time, and the damping ratio changes in volatility with the increase of the vibration time under the same dynamic stress amplitude.It is proved that dynamic modulus and damping ratio of tenth times of vibration can be used to represent the dynamic modulus and damping ratio at various levels loads.The dynamic elastic modulus increases then decreases with the increase of dynamic strain amplitude, and is fitted with the quadratic function.Damping ratio decreases first and then increases with dynamic strain.The dynamic modulus reaches the maximum at its optimal moisture content, and the higher water content makes the modified soil elastic modulus decrease obviously.The dynamic modulus decreases with the increase of the frequency at small strain amplitude, and increases with the increase of the frequency when the amplitude is larger.The damping ratio is larger when the loading frequency is high.关键词
赤泥/动弹性模量/阻尼比/含水率/加载频率Key words
red mud/dynamic elastic modulus/damping ratio/moisture content/loading frequency分类
建筑与水利引用本文复制引用
陈瑞锋,闫炜炀,刘晓凤,董晓强..不同含水率下赤泥改良土的动弹模及阻尼比研究[J].硅酸盐通报,2017,36(8):2810-2815,6.基金项目
山西省国际科技合作项目(2015081055) （2015081055）
黄土地区公路建设与养护技术交通行业重点实验室开放课题资助(KLTLR-Y13-4) （KLTLR-Y13-4）
山西省研究生教育创新项目(2015BY25) （2015BY25）
