The outcomes of the model tests show that the protective means can effectively improve the local flow structure at the head of groin,reduce the depth of scouring and change the maximum scouring place that are propitious to the stable of groins.

Numerical calculation of torsional vibration of intact piles;

Simulation and calculation of transient longitudinal vibration of integrate piles;

In this paper,we establish the computational models for unwhole piles based on the restriction of the top and the end of piles,and study the stability of the unwhole piles in the homogeneous soil under axial cycle loads.

Discussion on influences of the low strain reflected wave method in the detection of pile body completeness;

Determining pile body completeness classification based on the time and frequency domain signal characteristics;