The Numerical Analysis And Study Of Deepfoundation Pit In Guangzhou Metro Line No.9 Gaozeng Station

Guangzhou is in a rapid development of economic and industrial period, all sorts of large project more and more, foundation pit engineering problems also constantly emerging. Although engineering technology are improving, design is also in constant perfection, but in the practical engineering construction, attention to the excavation way does not see more.This paper mainly in guangzhou metro line no.9 Gaozeng stand of deep foundation pit engineering as the background, for construction monitoring data for analysis, realized Gaozeng standing of deep foundation pit engineering design and construction of the existing problems.Through numerical analysis software to build up a three-dimensional finite element model is simulated and analyzed, simulation of various excavation way, take three different excavation method of simulated and analyzed. This thesis mainly adopts the foundation pit excavation from south to north longitudinal, from central to both sides and foundation pit excavation and removed type jumping excavation three methods is simulated and analyzed, in each of the excavation way different conditions, the east wall of displacement and stress, the foundation pit excavation soil total displacement, the settlement of surrounding soils and stress of foundation pit supporting system were analyzed. Contrast and analysis the measured data analysis, combined with the actual situation and the engineering factors such as natural environment, comprehensive various excavation way results, Through the analysis and comparison get a more suitable for Gaozeng the excavation of deep foundation pit engineering standing way. This article through numerical analysis concludes that ends from the foundation pit excavation middle simultaneously to the excavation of high way is to Gaozeng standing nice excavation way. This paper illustrates the research in different ways of foundation excavation under the influence of various engineering properties of foundation pit is vary greatly. And through the finite element numerical simulation, can be in more actual deep foundation pit, to effectively control various excavation traits, to provide more evidence for design and construction.