Deep Foundation Pit Scheme And Retaining Pile Optimization Research

With the rapid development of the city and urbanization, deep foundation pitengineering is increasing, foundation pit surrounding buildings is more intensive,underground facilities are perplexing, all of this will effect deep foundation pitcomplex uncertain factor. And the deep foundation pit construction and supporting tendto experience and engineering analogy method, especially for the supporting scheme andsupporting component optimization research is not thorough system.This paper uses thetheory of fuzzy mathematics on deep foundation timbering schemes optimization, anduse the ofinite element method for topology optimization of bracing pile. This paperfirst gives the foundation pit retaining structure and soil interaction, soil pressurecalculation and the types of deep foundation pit retaining and analysis model,meanwhile discussed each kind of supporting types of technical parameters andapplication scope. And the deep foundation pit supporting scheme selection, finalselection and structure checking and the retaining piles finite element topologyoptimization of four programs are established. Secondly, combined with the theory offuzzy mathematics, deep excavation optimization fuzzy evaluation method is established,at the same time checked on the retaining pile type selection and strength, on this basis,the retaining pile finite element topology optimization theory and method are given.Finally, combined with the Shenyang Nanhua Square deep foundation pitengineering, the supporting scheme by using the theory of fuzzy mathematics, acomparative analysis of the anchor pile type and inner two supporting scheme, thesuitable engineering conditions of the anchor pile retaining structure scheme design areestablished, and use the equivalent beam method for stability calculation.At the end theretaining pile using topological method was optimized for the analysis, obtained withdifferent optimization objectives under the retaining pile reasonable topology, and afteroptimization the components meet the strength and improves the utilization rate ofmaterials.