光纤光栅用于监测高性能混凝土耐久性研究

光纤光栅传感器埋入混凝土中，能对混凝土结构内部的应力、应变、温度、徐变、裂缝、整体性等进行实时在线监测。为此，选用光纤光栅对巴东长江大桥采用高性能混凝土浇筑的梁体进行长期监测，以期客观评价高性能混凝土用于实际工程的耐久性，为混凝土结构耐久性设计提供基础。介绍了主梁混凝土的特性与光栅埋入情况，以及成桥荷载试验和光栅与振弦仪的对比检测结果。

Research on Durability Detecting of High Performance Concrete Structure with Fiber Grating Sensor

Fiber grating sensor embedded in concrete can real-time detect internal state parameters such as stress, strain, temperature, creep, crack growth of concrete. In order to evaluate durability of high performance concrete in practice and provide the base for durability design of concrete structure, fiber-grating sensor was used to detect long-term behavior of high performance concrete bridge in Ba-dong Highway Bridge. In this paper, the properties of concrete in the main bridge were introduced along with the way of embedding fiber grating sensor and the load test of bridge. The results for fiber grating sensor and vibratory strain gauge were compared.