Application Of Finite Element Reduction In Anti-Slide Pile Internal Force Calculation

Qften caused by damage to roads,railways,water conservancy,electricity and other infrastructure while landslides and cause serious damage to the residents along the production and living.Therefore,in order to ensure the safety of operations and property of nearby residents infrastructure landslide reinforced control project on more and more.In the Slope stability analysis of landslide critical step,limit equilibrium method because of its mechanical model is simple and easy to create a simple mathematical relationship,it has been widely recognized scientific and engineering personnel,but also in a large number of practical engineering applications,slope stability analysis is performed most commonly used method in the current engineering design.However,this method has more actual stress and deformation biased assumptions.Finite Element Analysis to take into account the distribution of stress and strain and stress-strain relationship of the slope,without human traits and assumed the position of the sliding surface to arrive at the actual properties and the safety factor is closer to the sliding surface engineering.In this paper,the finite element strength reduction Hanzhong City modeling analysis,the landslide cohesion and angle of internal friction reduction mechanical parameters,obtain stability coefficient of landslide,the stress strain cloud.And the results compared with Lizheng software calculation,the results of both are approximately equal.Anti-slide pile in landslide reinforcement widely used.Traditional analysis in anti-slide pile as a rigid body,the role of soil equivalent to the distributed load acting on the pile,without regard to the mechanism of the pile and soil mechanics in contact and become deformed.Elastic subgrade reaction method,it is assumed pile embedded in an isotropic semi-infinite elastic body,each of the soil for the elastomers,the level of resistance to bending beam theory seek pile.In this paper,strength reduction finite element analysis method,the stabilizing force before the pile of soil carried reduction,finite element model of the pile and soil,and set the contact element between the pile and soil,taking into piles and soil contact effect.Calculation of shear,bending moment diagram draw pile.And compared with the results software to analyze causes of error.Finally,the finite element analysis method to the analysis of a landslide governance Hanzhong City,analyzed and anti sliding pile slope stability analysis of reinforcement,obtain the safety factor;at the same time by changing the pile laid in different landslide location,and the size and distribution of power drawn deformable safety factor corresponding to the location of the draw pile most reasonable arrangement position by comparing the cloud of finite element analysis,provide the basis for engineering design.