【摘要】 介绍了超长桩断桩的处理与超声波法检测桩基混凝土质量的声学原理。建立了专用的声速-强度回归曲线。用超声波法对超长桩断桩的处理实施全程的质量监控:注浆前确定注浆的准确范围与部位;注浆后检测和评定注浆效果,并指出补注的必要性和具体部位;补注后再次检测与评定补注效果。超声波法全程监控确保了注浆效果,保证了该桩处理的成功。更多还原

【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.更多还原