岩土力学2013，Vol.34Issue(1)：47-52,6.
上海黏土强度特性真三轴试验研究
Strength property of Shanghai clay in true triaxial tests
摘要
Abstract
A series of isotropic consolidated drained true triaxial tests with different Lode angles in the same n plane are carried out with an automatic controlled mixed boundary true triaxial apparatus. The maximum and minor principal stresses are applied by two pairs of rigid platens; and the intermediate principal stress is applied by water pressure in triaxial cell. Undisturbed soil sample is prepared by block sampling method; and totally 5 drained tests with different Lode angles (0°, 15°, 30°, 45°, 60°) are presented. Test results show that the shear strength, the yielding & failure points of Shanghai soft clay decrease while Lode angles increase. The volume change increases first and turns to decrease when Lode angle is larger than 30°. In general, three-dimensional strength of the Shanghai soft clay obeys the SMP (spatial mobilized plane) failure criterion.关键词
真三轴试验/上海黏土/排水剪切试验/洛德角Key words
true triaxial test/ Shanghai clay/ drained shear test/ Lode angle分类
建筑与水利引用本文复制引用
盛佳韧,武朝军,叶冠林,王建华..上海黏土强度特性真三轴试验研究[J].岩土力学,2013,34(1):47-52,6.基金项目
国家自然科学基金项目(No.41002097) （No.41002097）
上海市重点学科建设项目(No.B208). （No.B208）
