Theoretical Solution And Comparative Study Of Anti Slide Pile

Anti slide pile,as the most commonly used and effective engineering measure in landslide treatment,plays an important role in the world’s landslide treatment and has been widely used.In the current anti slide pile design,the thrust acting on the anti slide pile is often assumed to be: triangle,trapezoid,rectangle,parabola,etc.;the calculation of thrust often divides the slide into blocks,assuming that the blocks are rigid,and calculated under a certain safety factor;in addition,the pile end of the anti slide pile is simplified and assumed to be: simply supported,hinged,cantilever,etc.In this paper,a new method of anti slide pile design and calculation is proposed.The design load of the anti slide pile is not assumed.The forces acting on the anti slide pile are both normal stress and tangential stress.The calculation results are compared with the traditional widely used anti slide pile calculation method("m" method).Taking the actual slope prevention as an example,the two calculation results are compared and analyzed.The specific research contents are as follows:(1)In this paper,the application of anti slide pile in slope prevention and control engineering is the theme.Firstly,the harm of landslide to domestic and foreign is described,and the research and application status of anti slide pile by domestic and foreign scholars are introduced and analyzed.Then,the classification,failure form,use conditions and design principles of anti slide pile are introduced in detail.(2)This paper introduces several traditional calculation methods of slope stability.According to the stability analysis results,the residual sliding force(landslide thrust)where the prevention and control measures are located is obtained.This result is used as the design basis for the anti sliding pile force The bending moment and shear force of the external force on the pile are solved,and then the internal force of the embedded end of the pile is solved by "K" method or "m" method.(3)In this paper,a new theoretical solution of stress is introduced.Under the condition of boundary condition and balance equation,the theoretical solution of stress distribution of slope body can be obtained,and the stress solution of anti slide pile can be obtained.This paper does not use the critical state assumption of slope stability analysis,according to the characteristics of continuous stress on the contact surface between the slope and the anti slide pile,obtains the design load of the anti slide pile.The thrust of the slope on the anti slide pile(that is,the anti slide force of the anti slide pile)includes both normal force and tangential force.According to the overall force balance and moment balance of the anti slide pile,the stress distribution of the anti slide pile can be obtained According to the theoretical solution,the strain distribution characteristics of anti slide piles are obtained.(4)Taking a landslide project as an example,the internal force of anti slide pile body is calculated by the traditional method("m" method),and the bending moment curve,shear curve and horizontal displacement curve of pile body are drawn based on the internal force calculation results of the loading section and embedded section of pile body.A new theoretical solution of anti slide pile is proposed to calculate the stress at any point in the pile,and the stress distribution of anti slide pile is generated according to the stress calculation results Figure,compared with the internal force drawn by "m" method,the new numerical theoretical solution of anti slide pile can describe its stressand strain characteristics.