Research On Engineering Application Of Foundation Pit Support In A Teaching Building

With the progress of urbanization in China,more and more high-rise buildings are rooted in the city.But urban land is very limited,so land resources become very valuable.So people focused on the development of high-rise buildings and the use of underground space.Generally speaking,the surrounding conditions of the excavation of the foundation pit in the city are relatively complex,and the foundation pit will have an impact on the surrounding environment during the excavation process,so the excavation of the foundation pit must be strictly standard.In China,different regions have different support modes due to geological conditions and different hydrological conditions.Therefore,selecting reasonable foundation pit support is one of the most important parts of foundation pit engineering.Reasonable foundation pit support should not only ensure its own stability,but also ensure the settlement of surrounding soil and the horizontal displacement of supporting structure within a reasonable range.In recent decades,Chinese researchers have done a lot of research on deep foundation pit engineering,and also obtained many valuable achievements.However,deep foundation pit engineering is a complicated subject,and there are still many problems to be solved.In this paper,a detailed data collection is made on the foundation pit project of a teaching building,and the research is carried out on the engineering situation,geological conditions,hydrological conditions and supporting forms.This is row pile retaining structure of foundation pit engineering take + in combination support supporting form,by using the finite element software Midas for a numerical simulation of the excavation construction stage of soil outside the excavation pit during the process of the settlement and horizontal displacement of retaining structure change rule,to justify the Midas software numerical simulation for the forecast of foundation pit engineering feasibility.In the end,the paper introduces the construction technology of bored pile,cement mixing pile,high-pressure spinning pile and so on,which plays a guiding role in the construction site construction.