Trial Calculation Method for Pre-stress Value of Anchor Cable in Rigid Anchor Pile
In the design and calculation of pre-stressed anchor anti-sliding piles,the initial pre-stress value of the anchor cable has a significant impact on the internal force adjustment of the anti-sliding pile,the control of pile top displacement,and the magnitude of the anchor cable tension under long-term working conditions.Therefore,based on the summary of existing methods for calculating the pre-stress of anchor cables,this article would propose the basic idea of the trial calculation method by combining the deformation coordination principle of anchor cables and anti-sliding piles.Using Matlab platform to develop calculation software,solve the deformation coordination equation,and obtain the anchor tension corresponding to different initial pre-stress.Based on the incremental change curve of anchor cable tension,the bending moment change curve of anti-sliding pile,and the control of pile top displacement,the initial pre-stress value of the anchor cable could be determined comprehensively,which was about 11%of the landslide thrust of the anti-sliding pile.
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