Numerical Simulation Of Deep Foundation Pit Excavation And Supporting Structure Analysis

In recent years, as the emergence of high-rise buildings and underground spaces anincreasingly being used, and therefore a greater orientation toward deeper excavationof the scale of development. Excavation process, not only consider their own safety butalso consider the impact on the stability of surrounding buildings. Deep foundation pitslope stability is crucial foundation to the construction of underground， thereforesubject to external forces, under soil pressure and other factors, it is necessary todesign the supporting structure to ensure the security and stability of pit slope. Alsodescribes the types of support structures and safety precautions at home and abroad inthe construction process of the research theory.This paper first analyzes the principle of mechanical stresses, so that the supportingstructure for the future force calculation laid a theoretical foundation. Also introducedthe term commonly used finite element software and its basic ideas to solve practicalproblems, finite element software Midas in deep foundation engineering. Second, usedifferent methods to analyze the stability of the pit slope of the same project and makethe appropriate comparisons with several traditional, the conclusion that a lot of theanalytical method has the advantage, but it requires a strong theoretical foundation, sooften used analytical method to analyze the security and stability of the actual projectpit slope.In solving practical engineering problems can be calculated using the analyticalmethod limit of slope excavation depth, slope angle and security stability limit of threeanalytical method factor formulas to determine whether it is safe pit slope stability ofthe state. Pit supporting structure supporting dual channel selection, the use of finiteelement software Midas modeling of excavation, a variety of asymmetric loads appliedon both sides and under the pit, to analyze the structure of the horizontal displacementof excavation produced and distribution of internal forces, but the maximum horizontaldisplacement occurred in the top of the pile, but also on the part of members of thereinforcement calculation carried out by calculating the internal forces. And then todifferent values of the parameters of the stress state of the numerical simulation, whenthe stress got to take different parameters, the horizontal displacement of the structureexcavation difference is very small, basically negligible. Analyzed by an numericalsimulation of software under different circumstances, the conclusion that a number ofuseful conclusions can provide a reference for future similar projects.