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
许国泰 , 魏巍 , 段元昌 , 段元锋 , 杨丁
结构工程师 ›› 2025, Vol. 41 ›› Issue (04) : 130 -136.
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
Experimental Study on the Influence of Corrugated Metal Pipe and Grouting Material on the Performance of Elasto-Magneto-Electric (EME) Sensor
为探究金属波纹管对电磁弹式索力传感器测量体内预应力时的影响,本研究搭建了电磁弹式索力传感器测试平台,完成了拉力标定试验。评估了考虑金属波纹管的电磁弹式索力传感器测量误差及重复性指标,并分析了管道灌浆材料对电磁弹式索力传感器输出拉力值的影响。由金属波纹管下电磁弹式索力传感器的测试结果可知:全量程相对误差的范围为-0.81%~0.49%,重复性指标小于1.0%;此外,灌浆前后电磁弹式索力传感器的测量误差均小于±1.0%,表明灌浆材料对电磁弹式索力传感器输出拉力值未呈现出明显影响。以上结果表明,针对金属波纹管,电磁弹式索力传感器表现出在体内预应力检测方面的适用性及准确性。
To 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 and repeatability 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%, with a repeatability indicator below 1.0%. Additionally, the sensor’s measurement 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 internal prestress detection.
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国家自然科学基金(52378318)
国家自然科学基金(52361165658)
浙江省自然科学基金(LHZ23E080003)
浙江省建设科研项目(2022K116)
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