Dynamic soil reactions around pile-fictitious soil pile coupled model and its application in parallel seismic method

摘要

The parallel seismic (PS) method is a nondestructive test technique for evaluating pile integrity, which has a wide range of applications for detection of reinforced concrete pile length and defects. In recent years, this method has been increasingly applied in practice; however, its theoretical model still requires further refinement. In this paper, a pile-fictitious soil pile coupled model considering three-dimensional effect of surrounding soil is established, and the analytical solution for the dynamic reaction of soil around and beneath the pile is solved. The developed solution is then employed to investigate the effects of pile-soil properties and technical aspects of PS method on the dynamic response of surrounding soil. The results are used to derive some conclusions in order to provide practical guidance for application of PS test in engineering practice.