Defects Discrimination and Error Analysis of Wharf Bored Piles Detected by Low Strain Reflection Wave Method

Abstract

Based on the field test of bored piles at wharf detected by low strain reflection wave method, time-history curve features and defect position of intact piles and defective piles contrastively analyzed, with verification of on-site drilled core testing. The reason for discrimination error between specific defect position and actual data when processing low strain reflection wave method are derived, based on the analysis of effect of defective piles strengthened by pressure grouting method retested by low strain testing, practical measures of on-site low strain reflection wave testing are purposed to improve detection accuracy.