土的三轴剪切试验及抗剪参数计算

Triaxial Test and Shear Strength Parameter Calculation for Soil

为了准确计算银珠小区粘性土的抗剪参数,以三轴剪切试验为基础,采用摩尔-库伦破坏准则,推导粘性土粘聚力c和内摩擦角φ与含水率W的近似关系。计算得出,当含水率在10%~26%范围内时,粘聚力与含水率的关系为C=-16.8lnW-15.63。内摩擦角与含水率的关系为φ=-21.2lnW-12.75。为银珠小区工程建筑设计和施工提供了依据。

In order to accurately calculate the shear strength parameters of cohesive soil in Yinzhu Community, the approximate relationship between cohesion c/internal friction angle φ of cohesive soil and moisture content W is deduced on the basis of triaxial shear experiment using Mohr-Coulomb failure criterion. The calculation results reveal that in the moisture content range of 10%~26%, the relationship between the cohesion and the moisture content is C=-16.8lnW-15.63, and the relationship between the internal friction angle and the moisture content is φ=-21.2lnW-12.75. Provided is a basis for the design and construction of Yinzhu Community.