Theoretical Analysis And Finite Element Method On Earth Pressures Of Retaining Wall Under Various Movement Modes

The calculation of earth pressure is of paramount importance in applied Engineering. In order to study deeply the magnitudes and distributions of the passive earth pressure under various types of wall movement it is promoted to the development of its theory and satisfactory the demand of the Geotechnical Engineering. The theoretical study and the numerical analyses are performed in this dissertation. The theoretical answers to the passive earth pressure and the resultant earth pressure on the retaining wall are obtained under the wall several movement modes of rotation about top or base. The finite element computations are performed and proceed. Both of their results are agreed rightly with some experimental observations.Firstly, the theoretical solution of passive earth pressure is obtained by strip equilibrium analyses under the wall movement modes of rotation about top or base. In this dissertation, an exponential function is used to describe relationship between passive earth pressure and wall depth. The resultant of force and its points are obtained in normal condition. And then the change or the difference of earth pressure is pointed out.Secondly, the programmers of the finite element method are performed. The regular pattern of earth pressure and the change of its coefficient are obtained. The passive earth pressure and the points of application of total thrust under various movement modes are compared and analyzed.Thirdly, theoretical analysis, the result of finite element and the experimental results are compared. Some conclusions and relations are made under the passive earth pressure on several movement modes. The outcome indicates that the theoretical analysis and the results of finite element are agreed with the experimental results. It is indicated that the formula of passive earth pressure and programmers of FEM is feasible in applied Geotechnical Engineering.Finally, on the base of the research of this paper, the suggestions are given for the further study focusing on the theory of the earth pressure.