应变片栅长对混凝土表面静态应变测量结果的影响分析

Influence of gauge length on exterior strain measure of concrete in static stress

针对混凝土表面应变测量设计了一组实验,选用3种不同栅长的应变片进行静态应变测量,分析了应变片栅长对测量结果的影响。对于混凝土这种材质不均匀且强度不等的材料,采用大栅长应变片测量其表面较大范围内的平均应变,能够更好的反映混凝土表面应变情况。

A set of experiments are carried out to measure the exterior strain of concrete in static stress. Strain gauges of different gauge lengths are employed in the experiments. The influence of gauge length on measured values is analyzed. For materials like concrete, it is good to employ long gauges to measure the exterior strain. Long gauge covers a larger area, and can describe the exterior strain of concrete more successfully.