Meshfree Local Petrove-Galerkin Method for Studying Bearing Behavior of Super Long Pile

Based on weighted residual method,the construction or selection of test function and weight function of Meshfree Local Petrov-Galerkin(MLPG) were introduced.Then,the dealing method of displacement boundary conditions,simulation method of elastic-plastic behavior of reinforcement and surrounding soil,dealing method of non-continuous on the interface and how the relevant program process brough about were deeply discussed,and the codes were also programed.The accracy of the local Petrove-Galerkin method was verified by comparing the calculating result to the classical solution in mechanics.Lastly,the bearing behavior of super-long pile was analyzed by the codes,and the relationship between pile length-diameter ratio and pile top settlement,nonlinear behavior of load-settlment curve was got.And the results also showed that,there is a effective pile length,which is related to the soil stiffness,when a pile longer than it,the bearing capacity of pile can not be enhanced by enlarging the pile length.