岩土工程学报2013，Vol.35Issue(z1)：156-160,5.
粉煤灰掺入量对改性黄土动本构关系的影响
Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess
摘要
Abstract
Based on the dynamic triaxial tests on disturbed unsaturated samples,a study on the dynamic characteristics of modified fly ash loess is carried out.The dynamic stress-strain relationship of fly ash loess under loading function is discussed.The influence of adding amount of fly ash on the dynamic constitutive relationship,dynamic modulus of elasticity and damping ratio of the modified loess is analyzed.The results show that the dynamic constitutive relationship of the modified loess with different adding amounts of fly ash obeys the hyperbolic equation.The test constants a and b decrease with the increase of the adding amount of fly ash.The dynamic modulus of elasticity increases with the increase of fly ash amount,but the damping ratio noticeably reduces.The optimal content of fly ash of the fly ash-modified loess is 15％～20％.关键词
粉煤灰/黄土/动三轴试验/动本构关系/动弹性模量Key words
fly ash/ loess/ dynamic triaxial test/ dynamic constitutive relationship/ dynamic modulus of elasticity分类
建筑与水利引用本文复制引用
王峻,王谦,王平,钟秀梅,柴少峰..粉煤灰掺入量对改性黄土动本构关系的影响[J].岩土工程学报,2013,35(z1):156-160,5.基金项目
甘肃省地震局地震科技发展基金项目(2012S01) （2012S01）
国家自然科学基金项目(50978239) （50978239）
中国地震局地震预测研究所基本科研业务专项项目(2012IESLZ07) （2012IESLZ07）
