Stability And Safety Monitoring On Group Of Piles Foundation Of Suspension Bridge Under The Complex Conditions

With the speeding development of national economy, the modern civil projects are developing in the directions of super-height, super-weight and super-depth , the group of piles foundation are adopted by more and more projects. But people' s cognition on the group of piles structures more often than not lags behind the request for the project design. For fulfilling the orexis of getting wise to group of piles, researching on group of piles theorization have more important significance.Therefore , in this paper, after deeply studying internal force features and load transferring principle of the piles, paper analysed on convergance principle of pile-soil numerical analysis and the development potential of finite element method (FEM)parallel computation after densifying element meshes. Paper deeply researched on piles' internal force distribution and load transferring principle at different load through the three-dimensional (3D) elasto-plastic contact nonlinear FEM. Paper earned a preliminary research result about piles characteristic parameters through numerical simulation and qualitative analysis. Furthermore, according to a real project example, by the ABAQUS , the analysis calculation was made on axial force and displacement of group of piles by 3D modeling directly and complete code and so on. The results verified the monitoring data in site each other, earning difference to adjust defects each other. The model apply body-beam mixed elements, through common joint, axial force of pile getting by stress around pile by integral, dovetailing the actual of the project.Based on the monitoring data of group of piles of south tower of Runyang bridge, through 3D FEM analysis and verification each other, discovering the blind of monitoring and bugs of load step simulating construction process. The analyzed results show that group of piles foundation is safe but monitoring points optimization and it is emphasised construction process simulation of numerical analysis.