Study on pile drivability with a simplified method

摘要: In order to study on pile drivability,one dimensional stress wave theory was employed establish the kinematic equation tip.The soil around shaft assumed be rigid-plastic,while that under pile-tip ideally elastoplastic.The reaction of and hammer obtained by Clough simplified triangular impact force acting top.Then movements pile-top were determined.The profile,parameters pile,parameters driving machine including cushion stiffness,drop height weight hammer,were studied find their influences efficiency driving.Cases show effectiveness presented method.It is shown estimated penetration blow count agree well with measured one in two cases.