Research On The Stability Analysis Method And Monitoring System For The Rock Foundation Of Bridge

To know the stability of the bridge foundation in the course of construction and running, this paper sums up the numerical methods and monitoring artifices with which to analyze the stability of foundation. The solving of nonlinear FE, the searching of sloping surface and the designing of monitoring system are researched in detail, and the fruits of theory research are applied to analyze and monitor the stability of the foundation of JiangYin Bridge. In a word, the works of this paper is as follows:1, About the stability analysis of bridge foundation, the Variational Kp method is researched. At the same time, an improved method that not only keeps the merits of the former method, but also improves the precision and extends the range is putted forward. At the basis of pointing out the phenomena of sloping surface moving when the loading, structural boundary or hydrology and geology conditions changes, the dynamic stability analysis to considering the moving of sloping surface is putted forwarded.2, About the stability analysis of JiangYin Bridge foundation, the geological model and nonlinear FE model are established, and the stability of foundation is analyzed. At the same time, according as the dynamic stability analysis, the position of pickets is optimized.3, Concerning the design theory of the monitoring system of bridge foundation, the basic designing principles to design monitoring system are analyzed, and the idea to optimize the monitoring system with Breach Viewpoint and Sensitivity Analysis is put forwarded.4, Aiming at the stability monitoring problem in the rock foundation of JiangYin Bridge ,the stability monitoring system of foundation is designed and optimized with the above principles and method researched in this paper, the monitoring results are analyzed, and the appraise about stability is gained.