CAJ | 학술논문

本文利用数值计算方法首次定量化研究了钢筋笼的磁异常场,总结了钢筋笼的磁异常特征,重点讨论了测孔方位、桩孔距、多节钢筋笼等影响因素,并为磁法检测钢筋笼提供了定量化的参考值.通过模型桩试验,验证了理论计算的正确性,并利用理论计算所得的规律合理的对实测曲线进行了解释.结果显示:数值计算和现场试验基本吻合,通过钢筋笼曲线特征可以较好的判断钢筋笼长度和配筋率变化.本文的研究完善了基于磁法的钢筋笼检测方法,并可以做进一步推广.该方法也对其他构筑物内部的配筋检测有一定的指导意义.
본문이용수치계산방법수차정양화연구료강근롱적자이상장,총결료강근롱적자이상특정,중점토론료측공방위、장공거、다절강근롱등영향인소,병위자법검측강근롱제공료정양화적삼고치.통과모형장시험,험증료이론계산적정학성,병이용이론계산소득적규률합리적대실측곡선진행료해석.결과현시:수치계산화현장시험기본문합,통과강근롱곡선특정가이교호적판단강근롱장도화배근솔변화.본문적연구완선료기우자법적강근롱검측방법,병가이주진일보추엄.해방법야대기타구축물내부적배근검측유일정적지도의의.
We quantitatively study magnetic anomalies of reinforcement rods in bored insitu concrete piles for the first time and summarized their magnetic anomaly character.Key factors such as measuring borehole orientation,borehole-reinforcement distance,and multiple-section reinforcement rods are discussed which contributes valid and quantitative reference for using the magnetic method to detect reinforcement rods.Through tests with model piles,we confirm the accuracy of theoretical computations and then utilize the law discovered in theoretical computations to explain the characteristics of the actual testing curves.The results show that the Zα curves of the reinforcement rod reflect important factors regarding the reinforcement rods,such as rod length,change of reinforcement ratio,length of overlap,and etc.This research perfects the magnetic method for detecting reinforcement rods in bored in-situ concrete piles and the method has great importance for preventing building contractor fraud.