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首页> 外文期刊>Journal of Nondestructive Evaluation >Non-destructive Method for Evaluating Grouted Ratio of Soil Nail Using Electromagnetic Wave
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Non-destructive Method for Evaluating Grouted Ratio of Soil Nail Using Electromagnetic Wave

机译：使用电磁波评估土着钉灌浆比例的非破坏性方法

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摘要

Although soil nails have been widely used for stabilizing slopes, they are often only partially grouted. Thus, grouted ratio of soil nails should be evaluated to prevent landslides. The purpose of this study was to investigate the suitability of a non-destructive method using electromagnetic waves for evaluating grouted ratio of soil nails. Experimental studies were performed with steel bars, partially grouted steel bars, and fully grouted steel bars in air. Partially and fully grouted steel bars were also installed in soils to simulate soil nails installed on slopes. Electromagnetic waves were generated and received using a time domain reflectometer by configuring a two-conductor transmission line formed by two parallel steel bars or two parallel grouted steel bars. Results of experiments showed that the respective round-trip travel time of electromagnetic waves increased with increasing length of the steel bar, grouted steel bar in air, and grouted steel bar in soils. The velocity of electromagnetic waves was the greatest in steel bars but the lowest in grouted steel bars in soils. In addition, the velocity of the electromagnetic waves decreased with increasing grouted ratio. This study suggests that electromagnetic waves might be useful for evaluating grouted ratios of soil nails to stabilize slopes.
机译：尽管土壤指甲已广泛用于稳定斜坡，但它们通常仅部分灌浆。因此，应评估土钉的灌浆比以防止山体滑坡。本研究的目的是研究使用电磁波进行非破坏性方法的适用性，以评估土壤钉的灌浆比。用钢筋，部分灌浆钢筋和空气中的完全灌浆钢筋进行实验研究。部分和完全灌浆的钢筋也安装在土壤中，以模拟安装在斜坡上的土着钉子。通过配置由两个平行钢筋或两个平行的灌浆钢筋形成的双导体传输线来产生和接收电磁波并接收。实验结果表明，电磁波的相应往返行程随着钢棒的增加而增加，空气中的灌浆钢筋和土壤中的灌浆钢筋。电磁波的速度是钢筋中最大的钢筋，但土壤中的灌浆钢筋最低。另外，电磁波的速度随着灌浆比的增加而降低。该研究表明，电磁波可能用于评估土壤钉子的灌浆比以稳定斜坡。

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