【摘要】 声波透射技术检测桩身完整性主要运用数学统计法和PSD斜率法。在声测管彼此不平行或收发换能器不同步时容易造成误判。为了解决上述问题,提出若干新技术,如相对能量法、瀑布图法、三维层析成像分析及采用两个深度编码器实时显示换能器所在位置等有效地改善测试过程和解释精度。通过实际工程的成功应用,试图将上述新技术纳入国内现行规范中。更多还原

【Abstract】 Statistics and PSD slope ratio methods are major methods in pile integrity testing with Cross-Hole Sonic Technology at present. They often lead to mistakes in defect determination when non-parallel access tubes or non-synchronous transmitter and receiver occurs. In order to solve the problem,some new technologies are presented in this paper to improve the testing process and result accuracy,such as relative energy calculation,waterfall diagram interpretation,tomography analysis and using two depth Encoders application with real-time display of transducer locations,etc. Based on the successful practical application,this paper tries to bring these new technologies into applicable codes and standards.更多还原