软黏土三轴固结不排水剪试验数据处理方法

Initial Studies on Process of Data from Triaxial CU Test on Soft Clay in Shanghai

三轴固结不排水剪(CU)试验的传统数据处理方法是根据破坏标准所确定的值直接绘制摩尔圆包线,确定土样的抗剪强度值。当遇到土性不匀或试验中某一试样扰动给试验带来误差时,其摩尔圆包线很难确定。归一化法、数值关系法、相关法3种特殊的试验成果处理方法,能更准确地确定CU试验的结果。

The conventional data process in triaxial consolidated undrained shear (CU) test is to draw directly Mohr's circular envelope based on the value determined by the damage standard, and determine the shear resistant strength of the sample soil. In case of any error due to uneven soil or disturbance on some sample, it is difficult to determine that envelope. Using the three special test methods, i.e. normalization, numerical relationship and correlation, more correct results can be determined from the CU test.