光纤传感器在混凝土结构中的相容性研究

Study on Compatibility of Fiber Optical Sensor in Construct of Concrete

针对土木工程领域中光纤传感器与混凝土结构的相容性问题 ,在理论分析和研究的基础上 ,提出一系列提高二者相容性的方法 ,并研制了一种新型的光纤传感器。实验研究表明 ,采用新型光纤传感结构和环氧保护层方案 ,不仅使传感器能适应恶劣的施工环境 ,而且能较好地实现对裂纹产生、扩展、断裂的监测 ,并在大变形情况下传感器不失效 ,具有较好的相容性 。

On the basis of the theory analysis and research, the paper that involves the compatibility between a fiber optical sensor and a concrete construct of civil engineering brings forward a series of method improving the compatibility, and a novel fiber optical sensor is developed. The experiments about it show that the novel construct of fiber optical sensor and the scheme of the protecting layer of epoxy resin bed composite not only make that the sensor is very suitable for the bad construct environment, but also bring to effect to monitoring the beginning, propagation and breaking of concrete cracks. The results also indicate that the sensor is not failure at large deformation, has a high compatibility with concrete construct and can be used in actual engineering.