Analysis Of Failure Modes Of Foundation Pit With Different Shapes

Since the reform and development,the economic level of our country has developed rapidly and the domestic real estate market is becoming more and more active.The number of commercial real estate and civil residential buildings is increasing,and the height of the building is increasing.The depth of the foundation pit of the high-rise building is also deeper,but in the construction process of the deep foundation pit,the accident situation is increasing gradually.It not only enlarges the construction risk of the construction personnel,but also destroys the environment around the foundation.In view of these problems,it is particularly important to study and analyze the failure modes of different shapes of foundation pit.Important,by analyzing the failure mode of foundation pit,it can reduce the risk in construction,and has practical reference value and reference significance for future projects.In the study of the failure mode of foundation pit,most experts and scholars in the related fields are using practical measurement,simulation analysis and simulated environmental test,but the experimental data obtained through the above methods can only analyze the stability of the foundation pit slope and the influence of foundation parameters on the foundation pit.The final failure mode of foundation pit,the location of failure and the depth of excavation and the scope of excavation can not get effective data on the disturbance effect of foundation pit,and the conclusion can not be put forward to the improvement of the structure of foundation pit.The current material stress-strain analysis is a number of numerical analysis methods using different grids.However,these numerical methods calculate the stress as a point of stress,that is,the calculation results are influenced by the point subsurface(for two dimensional)or in the point generation(for three dimensional),and the nonlinear problem is for the nonlinear problem.The initial stress(or initial strain)method is used to approximate the calculation,so the convergence standard is different and the calculation results are different.For some simple material stress problems,the theoretical solution is obtained by the dimensional analysis.In this paper,a method of calculating the stress theoretical solution of material is widely applied.This method can accurately calculate the stress distribution of the material under the assumption that the material stress satisfies the equilibrium and boundary conditions,and the theoretical solution of the foundation pit under different boundary conditions is obtained by taking the foundation pit as an example.During the period of the study,the author contacted a large number of slopes.Through consulting detailed information,the author understood and participated in the whole process of the idea of Professor Lu Yingfa’s new theory,and carried out a detailed calculation and analysis of the foundation pit examples.Based on this system,this paper mainly studies the following aspects.First,the present situation of foundation pit destruction at home and abroad and the calculation method of slope stability are introduced.Second,this paper introduces Professor Lu Ying FA’s new theory and applies it to the process of foundation pit slope,and calculates the results by blocking and boundary conditions.Finally,the results are obtained through EXCEL,and the final data are obtained through rhinoceros software.