摘要
根据磁测井法的探测原理,数值模拟了灌注桩钢筋笼磁场垂直分量Z理论曲线,研究了钢筋笼磁场垂直空间分布特征,总结利用磁场垂直分量Z曲线零点及其垂向梯度极值点确定灌注桩钢筋笼端点位置和长度的方法。通过对于模型桩和工程桩进行试验,验证了该方法的可靠性和准确性,能够被用于实际的灌注桩钢筋笼长度的工程检测中。
According to the principle of magnetic logging detection method, the magnetic field vertical component theoretical curve of bored pile steel reinforcement cage has been numerical modeled, and the characteristics of magnetic field vertical spatial distribution have been studied, the methods of confirming the endpoint location and the length of bored pile steel reinforcement cage by magnetic vertical component Z curve zero point and its ver- tical gradient extreme point are concluded. Through the test of model piles and engineering piles, the reliability and accuracy of this method have been checked, which can be applied to the actual engineering length detection of bored pile steel reinforcement cage.
出处
《工程地球物理学报》
2013年第5期693-699,共7页
Chinese Journal of Engineering Geophysics
基金
广东省交通运输厅科学研究计划项目(编号:2012-03-008)资助
关键词
灌注桩
钢筋笼
磁测井法
垂直分量
曲线拐点
bored pile steel reinforcement cage magnetic logging method vertical compo-nent curve inflection point
