Earth Pressures And Deformation Analysis Of The Retaining Structure

The importance of foundation pit supporting structure is self-evident, and the deformation size is not only related to its own security and stability, related to the safety of adjacent buildings and the normal operation of the nearby transportation etc. Also It is building itself completed and delivered to use safety the fundamental guarantee. And for foundation pit supporting structure deformation of the biggest impact on the loading, it is the foundation of the deformation factors, and for foundation pit is concerned, its stress and deformation and is not each other isolated, deformation and soil pressure is coordinate with each other factors, deformation, soil pressure big, small deformation, small earth pressure. But between them and is not merely a linear relationship between, therefore, in this paper, according to the supporting structure force and deformation on the relationship between the following aspects of work:1、Analyze on the earth pressure of deformation and deformation mechanism of foundation pit supporting structure, focus on the earth pressure of supporting structure on the influence factors and the current stage of the calculation method of earth pressure comprehensively, and consider the displacement earth pressure formula about analysis, it is concluded that the optimal actually. And determine the geotechnical parameters and design of supporting structure factors and construction factors, three aspects of earth pressure of the size and the distribution of the thinking.2、From the foundation pit supporting structure designing theory, this paper analyzes the current of supporting structure in the deformation forecast the calculation method, and the principle of the methods to carry on the summary, especially for the "m" of elastic foundation beam method is optimized, and change the resistance to deformation-earth pressure. From a theoretical perspective is more suitable for the analysis of the actual situation.3、To the finite element analysis of application in the geotechnical engineering and their analysis of the conventional discussed, especially in the calculation of the selection of the constitutive model, the selection of parameters, the selection of interface, the simulation of the supporting structure, convergence conditions setting etc. Make sure the software that more accurate and targeted on simulation analysis under different conditions.4、From the excavation of the soil parameters, envelope design and construction factors within the three aspects of the pile and foundation pit supporting structure of the deformation and earth pressure for the research and analysis, through a discussion of factors come to pit envelope structure and deformation of earth pressure sensitivity of different factors, found its main factors: the soil elastic modulus, Poisson’s ratio, Internal friction angle, Static earth pressure coefficient, Envelope stiffness and Ground overload, and these results are given for the corresponding effective measures to control the deformation of the pit.