Numerical Simulation Research For Distortion Of Single-row Pile Support Structure In The Deep Foundation Project

The fast development of our country’s economy pushes forward Construction Industry and Municipal Engineering Business. The more outstanding the characters for amount of foundation projects become, the more obvious the problem of foundation pit becomes, which requires more advanced technology. Traditional foundation pit structure design mostly apply plane hypothesis, ignoring interaction between supporting structure and soil mass as well as impact of space effect. Rational solusion for mentioned effect can produce great economic benefits. Therefore, it is necessary to consider interaction of supporting structure and space effect.This paper with one Deep Foundation Pit in Shenyang as setting, explores the force condition for supporting structure of single row pile, pile earth pressure distribution and calculation method and specifically introduces both strengths and weaknesses of different calculation method. Based on the above analysis and through limit element software "adina" for data analysis, dimensional model for foundation pit and supporting structure got built up. Furthermore, we analyzed soil and supporting pile displacements, discussed the influence of foundation pit on supporting pile and summarized arch regulation. At last, we also compared it with actual engineering and got the result that they just tallied with each other. The results show that:1) With consideration of interaction and impact of space effect, deformation for foundation pit obviously decreases. Soil mass friction between tangent piles can be fully utilized. Reduce tangent pile and arrange piles accordingly.2) Under different clear spans, arch forms differ among piles. Pile span will be figured out by inspecting pile arrangement according to arch form.From the above results of the gods, Finite element technology applied in the design for deep foundation pit enables better project simulation. It can reflect the dynamic characters of foundation project system and assist technician for problem analysis and solving. Furthermore, it provides reliable theoretical guidance for engineering construction, which shows great significance.