桩基低应变检测波型分析及桩身完整性判别

摘要

According to the characteristics of reflect waves on pile cap, pile body and pile tip, analyses are made to find causes for the defects such as segregation, sandwich silt , necking-down, fissure and expanded diameter difference, the measures are discussed to treat the above defects, and the standards are established to determine in-phase and reversed-phase reflected waves. By analyzing a large quantities of field detecting data, the rationality and applicability of the standards are verified, which will improve the precision for determining the integrity of pile body.%根据桩基体系中桩顶、桩身、桩端等各部位反射波的特征,分析产生离析、夹泥、缩径、断裂、扩径差异等缺陷的原因,探讨各类型缺陷的处理措施,建立同相反射波和反相反射波的判别标准.通过对大量现场检测资料的分析,验证判别标准的合理性和适用性,该方法对提高桩身完整性判别检测的精度有较大帮助.