摘要
利用全自动三轴仪进行了南京及附近地区粉土、粉质粘土、粘土的不排水剪切试验,研究剪切带倾角随围压和含水量之间的变化规律,比较Mohr Coulomb理论、Roscoe理论和Arthur理论对剪切带倾角的预估.试验表明轴对称条件下,粉土样剪切带倾角随着围压的增高而增大,含水量对粉土样剪切带倾角的影响不大.在相同围压的情况下,松散试样的剪切带倾角略高于密实试样的剪切带倾角.粉质粘土、粘土样的剪切带倾角随着含水量的增加而降低.Mohr Coulomb理论计算得到的剪切带倾角与试验实测值较接近.
The undrained shear tests on Nanjing silt, silty clay and clay were conducted by the KTG to investigate the effect of confining pressure and water content on shear band inclination angle, and evaluate the method of Mohr-Coulomb, Roscoe and Arthur＇s calculated values. It was indicated that the shear band inclination angle of silt will increase with confining pressure increases; but the water content has a little effect on it. Shear band inclination angles of the loose specimens are slightly greater that of the dense specimens＇ ones in the same confining pressure. Shear band inclination angles of silty clay and clay will decrease with water content increase. Measured inclination angles are consistent with Mohr-Coulomb theory.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2009年第1期132-136,共5页
Engineering Journal of Wuhan University
基金
江苏省教育厅高校自然科学研究项目(编号:01KJB410001)
关键词
剪切带
不排水剪切试验
围压
含水量
倾角
shear band
undrained shear tests
confining pressure
water content
inclination angle
