基于光纤传感技术的结构应力监测试验研究

基于光纤传感技术,对张力腿平台典型结构型式的模型进行应力监测试验研究,测量并分析施加不同载荷作用产生的结构应力。将光纤监测模型试验结果与有限元仿真结果进行对比分析,探讨光纤传感技术在海洋平台结构应力监测方面的适应性和可行性。研究结果表明,光纤传感器布设方便灵活,由光纤监测和有限元仿真得到的结构应力数据相对误差较小。在控制监测影响因素条件下,分布式光纤光栅传感技术可以可靠监测结构物的应力。

Experimental Study on Structural Stress Monitoring Based on Optical Fiber Sensing Technology

Based on optical fiber sensing technology, a stress-monitoring test was carried out for the model of the typical structure of the tension leg platform. The structural stress induced by different loads was measured and analyzed. The results of the fiber optic monitoring model test and finite element simulation were compared and analyzed. The adaptability and feasibility of optical fiber sensing technology in stress monitoring of offshore platform structures were discussed. The research results show that the optical fiber sensor is convenient and flexible to deploy, and the relative error of the structural stress data obtained by optical fiber monitoring and finite element simulation is small. Under the condition of controlling and monitoring the influencing factors, the distributed fiber grating sensing technology can reliably monitor the structural stress of the structure.