Three-dimensional Finite Element Simulation Analysis Of Inclined Type Anchor Rod Retaining Wall

With the rapid development of the national economy, infrastructure construction at an increasing rate. At present, the need for affordable, safe and reliable space composite retaining structure is increasingly urgent. As a new type of lightweight retaining wall structures, inclined type anchor rod retaining wall has the advantage of both retaining walls and Inclined retaining wall, which can be widely used in all types of terrain and foundations. But the study of this retaining wall deformation characteristic of the force in the domestic, the author has not found relevant academic report. Engineering applications, the designer is not enough to understand the force Characters of the retaining wall structure. Therefore, the study of such retaining wall is great theoretical significance and value of engineering guidance.Currently, the Inclined type anchor rod retaining wall design still used the classical earth pressure theory and limit equilibrium method that there are many assumes factors, is not conducive to optimization design of inclined anchor rod retaining wall structure. In this paper, life and death unit in ANSYS software was used to simulate inclined type anchor rod retaining wall structure, under the construction of building and the flooding effect, Retaining wall-anchor-soil-foundation deformation coordination development and process nonlinear analysis model. On the basis of considering soil cohesion (c)and internal friction angle(φ),the internal forces of retaining walls and displacements, soil pressure distribution and anchor tension is analyzed and sensitivity analysis on soil cohesion and angle of internal friction gives the following conclusions and understanding:(1)Established a non-linear finite element analysis model about inclined anchor retaining wall and analyze and simulate the construction process of inclined anchor retaining wall. Pointed out the size of earth pressure behind retaining wall and distribution, internal force and displacement of the retaining wall and the size of anchor axial force and distribution when the reservoir sluice completion.(2) Finite element analysis inclined anchor retaining wall for structural has been carried out, obtained the back wall of earth pressure distribution, horizontal displacement and feature of the retaining wall, retaining walls internal force distribution and the feature of anchor force of the inclined anchor rod retaining wall that under the there kinds of conditions about the retaining wall construction finished, reservoir storage completed and reservoir drain completed.(3) Through compared with horizontal displacement of inclined anchor retaining wall1/4sections, symmetrical sections and section where anchor location, found that anchor have a very obvious control of the horizontal displacement of retaining wall. The displacement of retaining wall at the parts of anchor location was significantly less than the other parts.(4) Parametric sensitivity analysis on soil cohesion and angle of internal friction which is the factors that affected inclined retaining wall structural internal force and displacement and axial force of the anchor. Pointed out that internal friction angle have a great impact on the structure of the internal forces, displacements and bolt axial force, and get the best value of internal friction angle and cohesion that suitable for engineering design. And the basic parameters measured within this range.