The Analysis On The Factors Which Affect Soil Pressure Of Deep Foundation Pit

With the development of large-scale construction project, more and more high buildings appear in all kinds of construction domains. Digging and supporting of foundation pit is so important that should be consided seriously. The computation of soil pressure is the important factor of supporting structural design of deep foundation pit. Thus it is more significant to analyse the effect of soil pressure factor.This paper summarizes the current main problems which effect the soil pressure factors, such as the unconformity between soil pressure computation and actual pressure value. The paper detailedly analyses the effect factors of deep foundation pressure, and take the effect of precipitation in project, combination computation and individual computation of water and soil, displacement of supporting structure and the effect of soil mechanical parameters to soil pressure computation into accunt so that soil pressure computation becomes more reasonable and accurate. Furthermore, the thesis combines ANN with Fuzzy and applies it to sensibility analysis of facters which affect soil pressure. The paper introduces the structure and learning algorithm of ANN BP model and ANN RBF model. Combining the perpendicularity list with theory of utility function and ANN, the thesis fully analyzes the sensitive ANN which influences the factors of soil pressure, and sets up ANN assessment model to achieve sensibility analysis. The paper testifies the validity and convenience of the proposed methods.