The Study In Predicting The Deformation Of Supporting Structure For Deep Foundation Pit

In informationalized constructions, with the aim being to accurately predict the deformation of the supporting piles, the correlations between the measurement points in the supporting piles should be taken into account in predicting the deformation of supporting structure for deep excavations, and the analysis of the monitoring data and the establishment of a proper model should be based on the deformation behavior of the entire deformed system, because deformation of one measured point has an influence on another in the same supporting pile of deep foundation pit. Based on such concept, a single deformation prediction model is extended into a multi-point model and coded with MATLAB. A multi-point prediction model is established, and its application in a case study presented to verify the multi-point model. The results indicate that the proposed model is effective for predicting the deformation of supporting structures for deep excavations, more effective than the grey prediction model GM (1, 1), and helps to direct the informationalized construction of the engineering.Due to the stratum parameters and the predigestion of mechanical model, the actual deformation of the soil and the support structure obviously differs from the academic deformation. So the article brings forward a new method to survey and simulate the project ever and again. The dissertation is carried out against a background of a practical engineering in Beijing which is simulated with the aid of the large-scale software--FLAC^3D .Its results are compared with survey results in site, which indicate that FLAC^3D is a feasible numerical simulation instrument. At the same time, the deformation of the piles is simulated by three dimensional finite element model, which can been consulted for the deep foundation excavation in Beijing.