Abstract：A technology for the treatment of super-long broken piles and the acoustic principle of ultrasonic method applied to detect the quality of concrete of piles were introduced.The special curve of sonic speed-strength was derived by regression analysis for the adjudgement of concrete strength.The ultrasonic method was employed to monitor the quality during the whole process of treatment of super-long broken piles: determination of the precise location and position before casting;detection and assessment of treatment effects after casting and pointing out the necessity and position of supplementary casting;redetection and reassessment of the effects of supplementary casting.The casting effects and the successful treatment of the pile are ensured through the proposed method.
张宏；陈信春；陈儒发；. 超声波法全程监控超长桩断桩处理的应用研究[J]. 岩土工程学报, 2008, 30(3): 420-424.
ZHANG Hong 1, CHEN Xinchun 1, CHEN Rufa 2. Application of the ultrasonic method to monitoring the whole process of treating super-long broken piles. Chinese J. Geot. Eng., 2008, 30(3): 420-424.
