| Bridge plays an increasingly important role in the rapid development of Chinese economic and social, nowadays grasp of the working performance of bridge structures and the protection of the security operation has more pressing needs. With the improvement of the structure calculation theory and test technology development, static and dynamic load test, healthy operation of the monitoring, structural performance and damage assessment of dynamics identification methods have been formed, static and dynamic load test have been widely used in carrying capacity, safety evaluation of new and existing bridges because of its advantages just like intuitive, reliable, easy to promote.However, due to the complexity of the bridge structure and the limitations of the existing methods of analysis and evaluation, there is still a lot of work we are required to explore and study ,just like improvement of the structural performance evaluation system, study of test analysis method, the effective utilization of test data of bridge load testing. This static and dynamic testing of bridge and structural properties of the actual situation of the needs assessment, combined with the existing testing methods to the limitations, through statistical analysis of samples, test validation, and so the bridge structure on how to improve the objectivity and performance evaluation reliability, test methods, data processing methods, evaluation methods, carried out systematic research and analysis.The main research work includes analysis based on frequency domain sub-average energy interception method of damping identification method, and were tested and compared to the analysis; to bridge, simply supported beam bridge study, carried out based on the natural frequencies stiffness evaluation method and test validation; to continuous bridge, for example, were based on measured time history of structural capacity evaluation method and test validation, and quantitative analysis of the impact of factors affecting the objectivity of the relevant factors; Statistics analysis of the bridge calibration coefficients with cross-section variation of the location and impact factors of the bridge than on the linear anomalies on the carrying capacity of the structure; were based on static and dynamic test parameters Study on structural performance evaluation and test validation; use of this related research on the structural properties of the altar with the comprehensive evaluation of the bridge. |
