Finite Element Analysis For Deformation Of Deep Excavation In GuiZhou' Mountainous Area

The excavation engineering is a complex geological engineering problem, it concludes not only the strength and stability of excavation, but also geological environment and social affects. In excavating process, it ensures the safety of excavation, in order to construct all kinds of engineering, and ensures the safety of the adjacent buildings, underground pipe-lines and other facilities.This paper studies the deformation of deep excavation in GuiZhou' mountainous area. The finite element method and large finite element method program ANSYS10.0 is used to simulate and analyze excavation and adjacent buildings interaction. In the model, problem of the study has been presumed as plane strain problem. Seemly, the soil is seemed as ideal elastoplastic model, and use four node equal-parameter element which abides by Drucker-Prager yield criteria of soil. At the same time, contact element is set between pile and soil to simulate their interaction. What is more, This paper has analyzed excavation and adjacent buildings interaction in the different distance of excavation and adjacent buildings, the different stiffness of bracing system, and the different physical mechanics parameter of soil.At last, some valuable conclusions benefit from design, construction of excavation engineering and research about excavation and adjacent buildings interaction. Now the research on excavation and adjacent buildings interaction is lacking, therefore, the results can be used as reference for the relevant numerical simulation and other research.