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Since the 1950s, along with the design of large span bridge with soft and structure form and functions of bridge is being more and more complicated, People on the large bridge important safety, durability and normal function more and more concerned. Long-term monitoring the bridge structure and evaluating the state of bridge not only can early discover bridge diseases, but play a significant stimulative role to verifing the design theory and promoting the research and development of the theory about bridge. For this demand, bridge health monitoring system and intelligent evaluate technology have developed rapidly, and become research hotspot of the bridge engineering and academic.According to the characteristics of large-span PC cable-stayed bridge, based on studing abroad in the current bridge health monitoring and evaluation technique, established Chongqing Fuling Shibangou Yangtze river bridge health monitoring system.Discussed the several problems about the bridge health monitoring, and comed up with the reasonable the overall construction scheme of health monitoring system: To system operating software with operating system functions as a platform, to data management system as the center, to sensor systemsdata, acquisition and transmission systems, structural damage detection and assessment of system status, remote information inquiry system as the external application of star structure and has a good adaptability, scalability, compatibility, reliability, fault tolerance and easy-operable, open modular architecture.Intensively researched and explored the structural deformation measurement method with inclination, analyzed the advantages and disadvantages of structural deformation measurement method with inclination, the conditions of use and the problems that should be paid attention to, and solved several application problem about structural deformation measurement method with inclination, provided with fully theory basis to application oftructural deformation measurement method with inclination.Described and discussed the Analytic Hierarchy Process(AHP) and its application in state assessment about bridge structure moniting , comed up with the opinion that the ideal AHP should be able to simultaneously consider balance and importance of the grass-roots index and the ideas to achieve the opinions.Intensively discussed research methods about structural damage identification and state assessment, the building modethe of bridge health monitoring system, the reasonable overall integration schemes about bridge health monitoring system, the reasonable data acquisition mode about health monitoring system, the reasonable construction schemethe of health monitoring system database,AHP’s reasonable secondary structure partition scheme, bridge health monitoring should be based on dynamic or static, environmental monitoring of bridge health monitoring system,etc. Comed up with personal opinions about the above problems .
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