Application of uniform design method for determining the applicable scope of deconvolution in low strain integrity testing of pile foundation
Yuan Da-qi · Port & Waterway Engineering · 2009
Deconvolution is one of the methods of seismic exploration engineering,which is used in the reflectivity sequences extraction widely,but not used in the detecting of pile foundation integrity up to now.In this thesis,we try to use the method of deconvolution to detect the integrity of piles,which is based on the similarity of each other.Every method has its applicable scope,so we use the uniform design method to choose ten groups of common examples to show the range of length and radius of pile individually.We use the ANSYS/ LS-DYNA software to establish different models,and then extract the velocity-time curves through low strain integrity testing of the pile.According to the analysis of curves with deconvolution method,the position of pile bottom is shown.Based on the result,we give the applicable scope of deconvolution,which provides a basis for further research on the method and project application.