Calculation And Application Of Slope Reinforced With Pre-stressed Anchored Cables

Anti-slide pile with anchor cable has been an effective means. however, due to the complexity of the interaction between pile system and landslide, its computational methods are not still very reasonable. According to the current study of prestressed anchor pile and research results in the field at home and abroad ,this paper makes in-depth research on the property of prestressed anchor piles by large-scale finite element analysis software MIDAS-GTS. The major work of this paper is focused on several aspects as follows:1. According to a lot of literature, the paper has summed up theoretical calculation methods of the prestressed cable piles structure, compared advantages and disadvantages of various methods, analyzed the existing problems and deficiencies of the current theoretical calculation method of anti-slide pile with prestressed anchor , and put forward development direction and focus of prestressed cable pile's further research.2. The paper has analyzed the finite element model of Turkish Constitutive model, anti-slide pile structure and numerical simulation of cable structure, and the elastic-plastic nonlinear analysis and convergence issues are discussed.3. GTS has established a three-dimensional source model about reinforced slope with Prestresseded cable piles. And then, through changing the calculation source model, the paper has analyzed and compared the deformation of the pile,the internal force of the pile body and the tension of cable when considering pile-soil contact, anchor-soil contact, coordination deformation of the pile and cable and so on. And by changing the single factor impacts of Prestresseded anchor pile including Prestressed, Support stiffness and the soil modulus of the scellement section of the pile,optimized the design of the prestresseded anchor pile.4. Combining engineering examples,considering the interaction between the prestressed anchor cable and anti-slide pile, prestressed anchor and rock, anti-slide pile and rock, ,the paper uses MIDAS-GTS to establish two dimensional finite element model of slope, uses strength reduction to analyze the stability of the natural slope (taking into account the water level),and the results show that the slope is unstable, and need treatment. However, according to sliding surfaces, uses prestressed anchor pile to reinforce the slope of governance, and build three-dimensional finite element model to simulate the entire construction process, after construction, adopts three-dimensional elastic-plastic strength subtraction to analyze the stability of slope, the internal force and deformation of anti-slide pile with prestressed anchor cable...