Integrity evaluation of drilled shafts using borehole and non-borhole seismic methods

摘要

The applicability of various integrity testing methods for drilled shafts was assessed using borehole and non-borehole seismic methods. The borehole seismic methods including the cross-hole sonic logging (CSL) test and the inhole test gave reliable results after being applied to the field drilled shafts. Non-borehole seismic methods consisting of impact-echo test and impulse response test were examined to provide the adequate responses of drilled shafts under various defects. In order to consider the effects to the response of drilled shaft, experimental model studies were carried out. The one-dimensional finite element studies of impact-echo test using ABAQUS were performed to review the applicability of this integrity test. Also, the effects of soil conditions on the transient response motion of drilled shaft were studied.