PARTICLE FLOW-BASED STUDY OF CLAY-CONCRETE INTERFACE SHEAR CHARACTERISTICS
To investigate the impact of soil-concrete interface shear characteristics on the bearing capacity of friction piles,a large-scale direct shear test was conducted on clay and concrete using a consolidated undrained shear test set-up.Additionally,a particle flow model was constructed using particle flow software.The study found that the clay in-terface shear exhibited strain-softening characteristics.As the normal stress increased from 100 kPa to 400 kPa,the initial shear modulus Ei increased nonlinearly,but the rate of increase gradually diminished,with increments of 76%,42.9%,and 26.8%,respectively.In contrast,the residual strength increased linearly.Furthermore,the numeri-cal simulation results closely matched the experimental results.The findings indicate that the established clay-con-crete interface shear particle flow model is reasonable and can provide a valuable reference for future research on friction pile bearing capacity issues.
万方数据
维普
