双轴贯入试验与直剪试验测定抗剪强度参数的试验研究

Test and Research on Shear Strength Parameter Determined by Double Punch Test and Direct Shear Test

利用双轴贯入结合无侧限抗压试验方法与直剪试验方法,分别对不同含水量不同干密度下重塑黄土的抗剪性能进行测定,对比两种方法所测得的抗剪强度参数。结果表明:用双轴贯入结合无侧限抗压试验方法测得的抗剪强度指标C、φ值,通过一定的折减可用来表示土的抗剪强度参数,且两种方法测得的C、φ值随干密度增加而增加,随含水量增大而减小。

Double punch test with unconfined compressive test and direct shear test are used to evaluate the shear behavior of remolded loess under different water content and different dry weight density.The shearing strength parameters determined by two methods are contrasted.The results indicate that through certain discount the valves of C and φ determined by double punch with unconfined compressive test can be characterized to the shearing strength parameters of soil.The valves of C and φ determined by two methods increase along with the dry weight density increases,and decrease along with the water content increases.