反射波法测桩中横波干扰的探讨

Discussion on S-wave Interference in Pile Testing with Reflection Wave Method

分析了桩顶反射横波的基本特征和产生原因。通过清除桩顶的浮浆或浮渣后重新测量,或采用理论分析鉴别法、实验检测验证法以及开挖甄别法可以消除桩顶横波的干扰。消除横波干扰后的反射波波形将更加真实地反映桩身的完整性情况,有利于对桩身质量做出准确的评价。

The causes and basic characteristics of S-wave reflection on the pile head were analyzed. The interference of S-wave on the pile head can be eliminated by re-measurement after removing scum, or using theoretical analysis and identification verified by testing, as well as discrimination by excavation. The reflection wave after eliminating interference of S-wave would reflect a real situation of the pile integrity, which can contribute to correct evaluation of the quality of pile body.