【摘要】 分布式光纤传感器具有分布式无损检测的特点,且精度较高,特别适合监测混凝土的裂缝。目前,国内已经有研究人员使用分布式光纤监测裂缝的尝试,但结果并不理想,为此进行优化研究。首先,研究光纤监测裂缝的机理,分析使用分布式光纤监测裂缝时的影响因素,并针对这些因素提出解决方案;然后,通过模型、算法及布置方式的优化提高监测精度;最后,通过对钢筋混凝土梁的试验数据优化分析,验证研究结果的准确性。结果证明,光纤经过优化后监测数据更准确合理。更多还原

【Abstract】 Distributed optical fiber sensor has the characteristics of distributed nondestructive testing and high precision, especially is suitable for monitoring concrete cracks. At present, domestic researchers have been using distributed optical fiber to monitor the cracks, but the results are not satisfactory, for this purpose, optimization research is carried out. In this paper, the mechanism of optical fiber monitoring crack is studied, and the influencing factors are analyzed. Then, the monitoring accuracy is improved through the optimization of model, algorithm and layout. Finally, the experimental results of reinforced concrete beams are analyzed to verify the accuracy of the results. The results show that the optimized monitoring data is more accurate and reasonable.更多还原