The Object-oriented Finite Element Analysis Of The Characteristics Of The Group Piles Foundation Vertically Bearing

Pile Foundation is an ancient and traditional forms the basis of one pile of rapid technological development and promote theoretical study of the pile continued to deepen, as a group piles pile the main type, has been a focus of study at home and abroad. After 40 years of research, people pile on the bearing and deformation mechanism have a more in-depth understanding and put forward a series of theoretical calculations and engineering design methods, but in relation to the development needs of pile foundation, the group piles on the depth of still far from enough. By the author of the analysis and comparison of the model, taking into account impact on the basis and foundation of the common factors, a comparison with the actual conditions of the finite element method, and the preparation of the corresponding software.Traditional finite element method is used to the idea of process-oriented programming in. Its lack of a unified not only the input and output format, a good graphical interface before and after treatment, but in scalability and reusability of code can be also subject to many constraints, This paper introduced the software in object-oriented programming ideas, the preparation of a common role for the finite element analysis program OOPFE(Object-Oriented programming of finite element ). The procedure to open, easy expandability and easy maintenance as the goal, And hopes to be able to follow-up applied to other aspects of the finite element program the development of the establishment of a basic platform.Based on the analysis of research at home and abroad with the joint role of theory and research on the basis of the status quo, using the finite element method for numerical analysis of the issue, The establishment of the 8-node plate element plane - 20 node module space - space 16 nodes contact element coupled with the numerical model. Raft of the pile of linear elastic bodies have adopted the constitutive model is used nonlinear soil flexible Duncan - Zhang model. pile of 20 nodes using three-dimensional simulation modules, Pile introduced in the space between the soil surface 16 nodes contact element, Raft plane with 8-node element simulation. Again based on the common ground and the overall role of finite element analysis.In this paper, the object-oriented programming tool Visual C + + 6.0 for the preparation of a common role of the finite element analysis program OOPFE (Object-Oriented programming of finite element). Use of large-scale finite element analysis software ANSYS before handling procedures for the rapid formation of procedures used data files, with VC + + language of the corresponding post-processing procedures. In the process of, the use of object-oriented method with Visual C + + 6.0 programming tools, common core of the concept of finite element nodes into abstract categories identification, unit type, load categories, such as matrices. Using the above process as a basic tool, vertical load calculation and analysis of pile groups under the pile soil deformation, lateral friction, anti-cap of soil characteristics and failure modes, and results were compared. Case Study show that the usage of finite element program is feasible, its computational results good agreement with the measured data.