摘要
光纤传感技术以其良好的耐久性和稳定性被广泛应用于道路工程和桥梁工程的健康监测中。通过对光纤传感技术在桥梁检测中的技术原理、方法优势进行研究,发现由于光纤传感器本身模量突变的原因,采集的信息与结构面的真实信息存在较大差异。因此对检测结构面与光纤传感器之间的协调变形性能的研究成为应用的前提和基础。通过ABAQUS建立变形评价的数值模拟模型,对沥青混凝土梁板结构中应变值与光纤传感器的实测应变比较,得出了光纤光栅应变传感器实测应变的有效性,为光纤传感器应用奠定理论基础。
With its excellent durability and stability Optical fiber sensing technology is widely used in road works and bridge works in the health monitor. Through research on the he technology principle, methods, advantages of bridge detection for optical fiber sensing technology, we found there is a big difference between collecting information and the true information structure caused by mutation of optical fiber sensor. Therefore, to coordinate the detection of surface structure and the deformation properties of optical fiber sensors become the prerequisite and basis to apply the technology. Numerical simulation of the deformation model is established with ABAQUS. Through comparing the strain value of asphalt concrete beams and the strain value measured with fiber - optic, effectiveness of grating fiber sensor to measure the strain value is conformed. And this will be the theoretical basis to apply optical fiber sensors.
出处
《南阳理工学院学报》
2009年第3期54-58,共5页
Journal of Nanyang Institute of Technology
关键词
光纤传感器
桥梁检测
应变
数值模拟
Optical fiber sensors
Bridge detection
Strain
Numerical simulation
