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Research on the layout of optical fibers applied for determining the integrity of cast-in-situ piles

机译：用于确定现浇桩完整性的光纤布局研究

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Distributed optical fiber temperature sensing technology has the potential to be used to determine the cast-insitu pile integrity. This study proposed an arrangement of optical fibers for obtaining the pile integrity in situ, and it provided a calculation model for the temperature distribution. A model pile was constructed with the dimensions of 1.5 m x 0.5 m x 0.5 m. The fibers were implanted parallel to the center axis of the pile with a spacing of 0.04 m. The heat conduction area generated because of the heating of the fiber in the center of the pile was tested. The test results indicated that the heating conduction area was limited for certain heating powers. Furthermore, for the heating conduction area and heating power, care must be taken while arranging the optical fibers in the piles to determine the integrity.
机译：分布式光纤温度感测技术有潜力用于确定现浇桩的完整性。该研究提出了一种用于现场获得桩完整性的光纤装置，并为温度分布提供了计算模型。建造了尺寸为1.5 m x 0.5 m x 0.5 m的模型桩。纤维以0.04 m的间距平行于绒头的中心轴植入。测试了由于纤维在绒头中心的加热而产生的导热面积。测试结果表明，对于某些加热功率，导热面积受到限制。此外，对于热传导面积和热功率，在将光纤布置在堆中时必须小心以确保完整性。

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