Study on nonlinear calculation model of load transfer in super-long piles

Based on load transfer mechanics and deformation properties of super-long piles and on the soil mechanics theory which is in disturbed state, a calculation model of pile resistance is put forward when the soil around piles is under elastoplastic state and slipping plastic state. With the reference of Duncan Chang model in nonlinear elastic theory and Mohr-Coulomb strength theory, calculation formulas of every parameter in the model are deduced. On the basis of foundation engineering theory, tip resistance of piles is computed. Then, through nonlinear iterative calculation of super-long piles load-settlement relationship, load and settlement relationship curve is obtained and comparted to the results from engineering static load test which can verify the correctness of this model.