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文章在实验模拟室外温度变化对现场应变测量影响的前提下,提出高强漆包线应用到现场的方法,结合工程实例对高强漆包线在现场桥梁结构应变测量中能消除温度变化引起应变测量误差,进行了测试及结果分析。电阻应变测量中,一般的温度补偿并不能排除实际现场应变测量中工作片和补偿片桥臂导线几十米长,在温度变化时,由于导线材质的不均匀导致线膨胀系数不同造成的电阻变化,桥臂导线越长,引起的误差越大。之所以提出高强漆包线在桥梁结构应变测量中的应用,是因为高强漆包线材质均匀性的特点,从对比试验的结果看出高强漆包线的应用是可行的,并对采用高强漆包线在工程结构应变测量中应用的实用性提出一些看法。
Based on the experimental simulation of the effect of outdoor temperature change on the field strain measurement, a method of applying high-strength enameled wire to the site was proposed. Combined with engineering examples, the strain measurement error of high-strength enameled wire in the field bridge structure strain elimination was eliminated and tested And result analysis. Resistance strain measurement, the general temperature compensation does not rule out the actual field strain measurement of the working piece and the compensation piece bridge arm tens of meters long, in the temperature changes, due to uneven wire lead to linear expansion coefficient caused by different resistance changes , The longer the arm of the bridge arm, the greater the error caused. The reason why the application of high strength enameled wire in the strain measurement of bridge structure is proposed is because of the homogeneity of high strength enameled wire. It is found from the comparative test that the application of high enameled wire is feasible. In the measurement of structural strain using high strength enameled wire Practicality of the application made some observations.