石板坡长江大桥多通道光纤珐珀应变测量系统

Multi-channel fiber optical fabry-perot strain testing system for the shibanpo yangtze river bridge

应变是表征桥梁安全状态的重要指标。依据光纤珐珀应变传感器的特点以及石板坡长江大桥的实际情况,设计出多通道光纤珐珀应变测量系统。该测量系统成功地实现了光纤、光电测量技术、计算机技术和土木工程技术的交叉融合,实现了大型连续桥梁应变自动测量。运行结果表明,该测量系统具有一定的可行性和可靠性。

Structure strain is one of the important parameters of representing bridge safety condition. Multi-channel fiber optic Fabry-perot strain testing system were designed depending on situation of Shibanpo Yangtze River Bridge and characteristic of fiber optic Fabry-perot strain sensor. This system realized amalgamation of fiber, photoelectricity testing technology, computer technology and civil engineering technology, and realized strain auto- testing of large-scale continuous bridge. The result indicates that this system has some feasibility and dependability.