中北大学学报（自然科学版）2017，Vol.38Issue(2)：249-254,6.DOI:10.3969/j.issn.1673-3193.2017.02.027
不同振动频率下酸性压实黄土的动力特性研究
Study on Dynamic Characteristics of Acid Compacted Loess Under Different Vibration Frequencies
摘要
Abstract
To study the influence of vibration frequency on the dynamic elastic modulus,damping ratio,vibration deformation and pore pressure in the loess subgrade with acid corrosion,a series of dynamic triaxial tests were conducted.The vibration loads of different frequencies were provided through the GDS dynamic tri-axial testing apparatus.The pH=5 acid was selected to prepare the loess to simulate acid compacted loess.The results show that when the same dynamic strain is achieved,the dynamic elastic modulus increases with the increase of vibration frequency,the damping ratio increases with the increase of vibration frequency,the dynamic pore pressure increases with the increase of vibration frequency;The vibration deformation increases with the increase of vibration times under the same vibration frequency;The vibration deformation decreases with the increase of vibration frequency under the same vibration times;The sample made with acid liquor of pH=5 compared with that with distilled water of pH=7,the dynamic elastic modulus,damping ratio,pore pressure decreases and the vibration deformation increases.关键词
振动频率/酸性压实黄土/动力特性Key words
vibration frequency/acid compacted loess/dynamic characteristic分类
建筑与水利引用本文复制引用
寇晓辉,张强,董晓强..不同振动频率下酸性压实黄土的动力特性研究[J].中北大学学报（自然科学版）,2017,38(2):249-254,6.基金项目
国家自然科学基金资助项目(51178287) （51178287）
山西省科技创新重点团队建设计划(2014131019) （2014131019）
黄土地区公路建设与养护技术交通行业重点实验室开放基金资助项目(KLTLR-Y13-4) （KLTLR-Y13-4）
