ABSTRACT
Relying on the Science and Technology Demonstration Project of the Ministry of Transport for the safe and intelligent construction of the Fengjian Expressway in the Three Gorges Reservoir Area, this paper focuses on the long-term performance evolution and construction and operation safety of Daxihe Bridge, a steel-concrete composite beam cable-stayed bridge with a main span of 650m, and carries out the research and application of intelligent monitoring and fine construction control technology throughout the entire bridge construction and operation life cycle. Based on BIM and GIS, an intelligent monitoring and early warning system is constructed that incorporates monitoring of bridge construction, completed bridge load test, and operation-related health monitoring. This system realizes intelligent bridge construction monitoring and measurement, online monitoring of incremental and full data of completed bridge load test and health monitoring during operation, and guarantees the data continuity of construction monitoring and health monitoring, seamlessly connects the whole process of bridge construction, management, maintenance, and operation, and realize online perception, monitoring, identification, evaluation, and real-time warning of the effects of the environment and load on the bridge as well as the structural response, performance, state, and safety level.
