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为了研究老化效应或次固结对粘性土的不排水抗剪强度的影响,前对剪切试羲,经过不同时间固结的正常固结土样进行了一系列的三轴压缩试脆。通过对强度、孔隙比曲线的研究,得出了以下结论:由于次固结引起强度的增加可以定量地分为由于孔隙比的减小和颗粒间接触点连结力的增加。进而发现,对于经历一周时间的次固结的试样而言,由于粒间连结力增加引起的强度增加量约占整个次固结引起强度增加总量的35帕和45肠左右。
In order to study the effect of aging or secondary consolidation on the undrained shear strength of cohesive soil, a series of triaxial compression embrittlement tests were carried out on the shear test Xi and normal consolidated soil samples consolidated at different times. Through the study of intensity and void ratio curves, the following conclusions are drawn: The increase in strength due to secondary consolidation can be quantitatively divided into the following due to the decrease of void ratio and the increase of the bonding force between the particles. Furthermore, it was found that the strength increase due to the increase in the interparticle bonding force is about 35 Pa and 45 Sau around the total strength increase resulting from the entire secondary consolidation for the sub-consolidated specimens that have undergone a week.