饱和软黏土十字板强度的相关性研究

水运工程地基海相沉积的软黏土地层较多,软黏土十字板强度指标是进行地基和边坡稳定验算的重要指标,但在海上进行十字板试验受风浪、潮汐影响,实施较为困难,试验数据的相关性研究较少。结合多个港口软黏土十字板测试成果数据,分析了十字板强度与有效自重应力及标贯击数的相关性,并建立了相关公式,对软黏土十字板强度指标的获取和应用具有实用和借鉴意义。

Correlation study about vane shear strength of saturated soft clay

Marine deposit soft clays are often encountered in marine traffic engineering. Their vane shear strengths are important parameters for verifying stability of foundation and slope. However, the marine vane shear test is affected by many factors, such as wind wave and tide, thus it is difficult to implement. Moreover, related research about test data is limited. Based on the results of the marine vane shear test of soft clays in various harbor locations, correlation between test results and effective gravitational stress and SPT counts is analyzed and corresponding equation is built. This is very useful for the application of the marine field vane shear test to soft clay.