Study Of Hydraulic Concrete StructuresSafety Monitoring Based On Optical Fiber Sensor

Natural disasters are very frequent in our country, After many years of country building, our country have established huge numbers of all kinds of hydraulic concrete structures, In flood control, drainage and irrigation, water supply, environmental protection and so on, it play an important role, and it become infrastructure important constituent in China, for our national economic construction and social stability played a huge role. At the same time water conservancy engineering structure because of natural disasters, environment, material aging and load erosion effects of long-term, effects of fatigue functions, At the same time water conservancy engineering structure because of natural disasters, environment, material aging and load erosion effects of long-term, effects of fatigue effect such as inevitably produce structure and system damage accumulation and resistance attenuation, and if lack of real-time warning monitoring system, once the crash, the downstream of the lives and property of the people and the major traffic trunk lines and other infrastructure will cause a devastating disaster.The current due to new fiber Bragg grating sensor its outstanding advantages and become the first choice of large structural health monitoring sensor, in large Bridges, pipeline in structural health monitoring applications, but in water conservancy engineering structural health monitoring system is seldom used. Based on the hydraulic concrete structure characteristics, the integrated use of the basic theory of the structure, system, structure and experiment technology, damage identification and evaluation method, structural reliability theory and so on many kinds of basic theory and method, this paper analyzes the traditional health monitoring system is the pros and cons of the model, and the new grating sensor used in light of hydraulic structures health monitoring is studied, the main research contents are as follows:(1) Overview hydraulic concrete structural health monitoring and the present situation of the important practical significance, analyzes the defects of traditional monitoring method and the insufficiency, expounds the new hydraulic structural health monitoring system’s advantages and characteristics; (2) Based on optimization putting principles, and carry out the seepage deformation of strain, and the optical fiber grating sensors integrated experimental research and traditional electrical measurement methods for contrast test research;(3) Through the theoretical analysis of the system, and illustrates the hydraulic structure health monitoring system and mechanism of all, this paper analyzed the system optimization decorate, damage identification and safety evaluation and the warning of method;(4) Through the structure and all kinds of sensor system integration research and set up a corresponding structure monitoring mechanism, to complete the optical fiber grating sensors based on the structural health monitoring system of automatic hydraulic theoretical structure.(5) Hydraulic structure based on new health monitoring system architecture design application monitoring system, reference actual engineering practice, sets up a new sensor subsystem based on the hydraulic concrete structural health monitoring system theory model;(6) The existing problems of the new type hydraulic structures and the health of the intelligent monitoring system development and future were also put forward, of the article summarized the main work and stated, and points out that the new hydraulic structure health monitoring system in the process of research.