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首页> 外文期刊>Proceedings of the IEEE >Measuring Crack Movement in Reinforced Concrete Using Digital Image Correlation: Overview and Application to Shear Slip Measurements
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Measuring Crack Movement in Reinforced Concrete Using Digital Image Correlation: Overview and Application to Shear Slip Measurements

机译：使用数字图像关联测量钢筋混凝土中的裂缝运动：概述和在剪切滑移测量中的应用

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摘要

Reinforced concrete infrastructure assets built during the last century are required to stay in-service beyond their intended design lives, which requires techniques that allow the effects of deterioration and overloading to be monitored to ensure these assets are still fit for purpose. One such indicator of distress in a reinforced concrete structure is crack movement; models have been proposed that allow the internal stresses within a structure to be estimated if crack width and slip can be measured. This paper introduces a technique that uses digital image correlation (DIC) to measure not only crack width but also crack slip. The effect of curvature on this measurement technique is discussed and a method for minimizing the errors due to curvature is presented. The technique is used to measure crack width and slip in reinforced concrete beams with both small crack slip and significant crack slip. The results suggest that the technique can be used to measure crack movement in beams once the effects of curvature are accounted for. Future research in this area will focus on development of this technique for use in the field.
机译：要求在上个世纪建造的钢筋混凝土基础设施资产在其预期的设计寿命内保持使用状态，这需要能够监控劣化和超负荷影响的技术，以确保这些资产仍能满足特定目的。钢筋混凝土结构中出现这种情况的一种指标是裂缝运动。已经提出了一些模型，如果可以测量裂缝宽度和滑动，则可以估算结构内部的内应力。本文介绍了一种使用数字图像相关性（DIC）来测量裂缝宽度和裂缝滑移的技术。讨论了曲率对这种测量技术的影响，并提出了一种使因曲率引起的误差最小的方法。该技术用于测量具有小裂缝滑移和明显裂缝滑移的钢筋混凝土梁的裂缝宽度和滑移。结果表明，一旦考虑了曲率的影响，该技术可用于测量梁中的裂纹移动。在该领域的未来研究将集中于该技术在该领域中的使用。

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