金属波纹管及灌浆材料对电磁弹式索力传感器性能影响的试验研究

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中图分类号：TU378 文献标志码：A DOI： 10.15935/j.cnki.jggcs.202504.0015

AbstractTo investigate the influence of corrugated metal pipes on elasto-magneto-electric（EME）sensors for internal prestress measurement，this study established an EME sensor experimental platform.Calibration experiments were conducted with the sensors installed under corrugated metal pipes.The measurement error andrepeatability of the EME sensor under these conditions were evaluated，and the impact of grouting material on the sensor’s output tension value was analyzed. Calibration and measurement results under Corrugated metal pipes demonstrate that the full-scale relative measurement error of the EME sensor ranges from -0.81% to 0.49% ，witharepeatabilityindicatorbelow 1.0% .Additionally，the sensor’smeasurement error before and after grouting remained within ±1.0% ，indicating that grouting materials do not significantly affect the output tension value.These findings confirm the applicability and accuracy of the EME sensor for internalprestressdetection.

Keywordselasto-magneto-electric （EME） sensors，corrugated metal pipe，sensor calibration， grouting effects

0 引言

预应力筋的受力状态对整体结构的安全及稳定至关重要，预应力监测是目前科学界与工程界极为关注的重要问题[12]。（剩余9625字）