Study On The Interaction Between Stabilizing Pile And Rock-soil In Landslide

As one of the most effective stabilizing structure, the stabilizing pile obtained the widespread application in the landslide government project, but because the complexity of the interaction between the pile and the soil of the landslide, at present the method of the interaction between the pile and the landslide is also incompatible. This article elaborated the basic principle and the present research situation of each of the three computational conventional methods, which are the pressure method,the displacement method and the finite element method. So based on the analyzing of the status of the finite element method used in the design and computing of stabilizing pile, the finite element method is improved better for its application in the design and computing of stabilizing pile.The pressure method and the finite element method which are the conventional method have not calculated the dynamic regulation in the interaction between the pile and the landslide. And the displacement method has solved the problem that the distributing mode of the landslide thrust force on the stabilizing pile. But one problem is that under the method oflimiting equilibrium ,the value E_n·l of the load on the stabilizing pile is computed, whichaimed at the stabilizing pile to establish the balanced differential equation, only has not established the balanced equation analyzing its stressful condition on the soil alone around the sliding pile each one. Therefore this method does not calculate the influence of the pile's distortion to the distortion and the stressful condition of the soil. This article will establish an advanced finite element method of the interaction analyzing between the pile and the landslide.Regarding the advanced finite element computing model of the ordinary single line and the two-row stabilizing pile the methodology is to establish finite element equations about the stabilizing pile and the soil before and after the soil respectively, and to use the sub-structure theory aggregated the finite element fundamental equations of the sliding soil which is before and after the pile to the finite element fundamental equations of the stabilizing pile. Then the equations of the advanced finite element model of the ordinary single line and the two-row stabilizing pile have been established. We elaborate and analyse the interaction mechanism, which has a wide application in the practice of the stabilizing pile with anchor cable, between the anchor cable and the pile. Introducing the rigidity of anchor cable into the total rigidity matrix of the stabilizing pile and using the coordination condition of distortion between the anchor cable and the stabilizing pile, we can induce the equations of the advanced finite element model of the stabilizing pile with anchor cable. According to the construction process of pre-stressed anchor cable stabilizing pile, the design calculation of anchor cable stabilizing pile is divided into two stages, one is pre-stressed infliction stage, and the other is normal work stage.The thesis has carried on the computation to a project practice by the existing program, contrasted the computed result and the tradition method design calculation result.