摘要
利用GDS共振柱试验仪对不同干密度、黏粒含量及围压下的全风化砂岩试样进行动剪切模量试验研究.结果表明,随干密度的增加,动剪切模量增加;随黏粒含量的增加,动剪切模量减小;随围压的增加,动剪切模量增大.使用H-D双曲线模型能够较好地模拟全风化砂岩G-γ曲线变化趋势;随黏粒含量的增加,最大动剪切模量Gmax减小;随干密度及有效应力的增加,Gmax增大.
The dynamic shear modulus of fully weathered sandstone specimens with different dry density,clay content and confining pressure were tested by GDS resonant column tester.The results show that with the increase of dry density,the dynamic shear modulus increases;with the increase of clay content,the dynamic shear modulus decreases;with the increase of confining pressure,the dynamic shear modulus increases.The H-D hyperbolic model can better simulate the changing trend of G-γcurve of fully weathered sandstone.With the increase of clay content,the maximum dynamic shear modulus Gmax decreases;with the increase of dry density and confining pressure,the Gmax increases.
作者
宋晓丽
张瑾
张鹏
凌贤长
李广胜
吕秋臻
SONG Xiao-li;ZHANG Jin;ZHANG Peng;LING Xian-zhang;LI Guang-sheng;LÜQiu-zhen(School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China)
出处
《青岛理工大学学报》
CAS
2020年第5期104-109,共6页
Journal of Qingdao University of Technology
基金
国家自然科学基金青年基金项目(41702320)
山东省高等学校科技计划项目(J17KA204)
山东省自然科学基金资助项目(ZR2019QEE008)
泰山学者工程专项经费资助项目(2015-212)。
关键词
全风化砂岩
黏粒含量
干密度
围压
动剪切模量
fully weathered sandstone
clay content
dry density
confining pressure
dynamic shear modulus
