Detection and analysis method for determining defect area of pile body of cast-in-place concrete pile

The invention aims to provide the comprehensive analysis method for detecting the integrity of the pile body of the cast-in-place concrete pile, which is high in accuracy and capable of determining the defect range and estimating the defect area. According to the method, a cast-in-place pile is included, defect judgment is conducted on the cast-in-place pile through a conventional sound wave transmission method and a core drilling method, retesting is conducted through the sound wave transmission method, the defect range is determined, the defect area and the pile body integrity coefficient are estimated, and the unique comprehensive analysis method is formed. The detection and analysis method for determining the defect area of the pile body of the cast-in-place concrete pile comprises the following steps: conclusions of a conventional sound wave transmission method and a core drilling method are inconsistent; a core drilling hole and a sounding pipe form a new sounding pipe system for sound wave method retes