不同干密度下滨海相软土的强度分析

Effect of Dry Density on the Strength of Near Shore Samples

对不同干密度原状软土进行不排水不固结直剪试验,重点研究了干密度对渤海近海口地区软土力学特性的影响。探讨不同干密度软土的抗剪强度规律,并分析干密度对非饱和淤泥质黏土粘聚力以及内摩擦角的影响,得出结论:干密度增大,抗剪强度随之增大;粘聚力与内摩擦角也随着干密度增大而增大;土体抗剪强度参数与干密度存在一定的线性关系。

Shear strength is an important mechanical property parameter of soils. In order to investigate the influence of dry density on the mechanical properties of soft soil nearshore sample from Bohai area, the undrained unconsolidated direct shear tests wereconducted on the natural soil sample with different dry density. The influence of dry density on the cohesion and the internal friction angle of the unsaturated clay tests was evaluated. It is concluded that the shear strength increases with the dry density.