Study On The Mechanism And Optimum Design Of Pre-stressed Anchor Anti-slide Pile

Landslide is a kind of geological disaster that always occur and make hazard, and there is high incidence of such disaster in China, so the study on landslide prevention is of great practical singnificance.At present, many kinds of the landslide prevention got great developmentd, and anti-slide piles have been widely used. The pre-stressed anchor anti-slide pile is a new kind of retanining structure applied to anti-slide project in the years. The theoretical study on the structure design lags to the project application. The structure design lack the corresponding standard as its instruction, especially the study on global optimization design of the pre-stressed anchor anti-slide pile system. This artice is to develop these questions base on Xiaoyanjing landslide.Firstly, the thesis research the interaction between pre-stressed anchor anti-slide pile and slide, inter computantional formula of the slide thrust force applied to the pre-stressed anchor anti-slide pile. The author through reasoning analysis, which believes that the thrust force computantional formula mached to resisting force compensation based on method is more reasonable used to pre-stressed anchor anti-slide pile.Secondly, introduce the finite difference method, consider the several center restraints situation of piles bottom, get method of pre-stressed anchor anti-slide pile. The hypothesis of considering wall protection in lateral erath pressure computation of pre-stressed anchor anti-slide pile and inclined section is proposed for the first time, and the correlated formula is rrevised.Thesis set up a math model , whose target function is cost of unit length of pile. It is resolved through goldon section method. It provides a new way for pile anchor system optimum.Finally, integrated with pratical project, and contrast the result to the traditional methods. This confirms the theory in the thesis is right and rationality, the optimum design theory of pre-stressed anchor anti-slide pile system is promoted.