Study On The Stress Mechanism And Deformation Control In Deep Foundation Pit Engineering Of IPS System

In this paper,the research ideas based on the relationship between stress and deformation of prestressed steel support of IPS.consideration existing results at domestic and foreign research,according to its own control study and analysis of displacement with deformation mechanism in foundation pit,modal analysis with finite element simulation software,through the actual project(one of square foundation pit engineering in Hefei)to carry out specific deformation performance analysis,Finally,the numerical analysis is carried out.The corresponding general law,for similar projects later to do some valuable reference.The main contents include the following aspects:(1)Review at home and abroad in deep foundation pit,supporting the research status and development trend,expounding the deep foundation of the definition of national norms adopted technical standards ? technical regulations and methods of deep foundation pit deformation control,also provide a theoretical basis for the following analysis;(2)The application of new technology of IPS system in deep pit area,compared with the traditional support systems,show the prestressed steel support highlights;The optimization of the deep foundation pit,the deformation control technology and the corresponding Of the standard at home and abroad,combined with the corresponding construction program,that is,the introduction of IPS method.(3)The actual engineering example a square block 4# of foundation pit engineering in Hefei.Establishing the prestressed steel structure model calculation process of IPS system by finite element software.Analysis of the stress mechanism under various working conditions,combined with this and make some adjustments.(4)Using Lizheng software calculated the supporting side soil pressure at the lateral bracing of IPS;the overall modeling by MIDAS-GTS software for deep foundation pit IPS level system,contrasted in the overall model under different conditions the results of performance analysis are the specific force of engineering structure and deformation,the deformation of foundation pit displacement analysis the characteristics and summarized.(5)Finally,conclusions and looking into the future.