Internal Force Analysis And Numerical Simulation Of Anti-slide Pile In Reservoir Bank Landslide

Landslide is a common geological disaster in the reservoir bank landslide in China.Because it has great harm and complex reasons that results in great economic losses and threaten of safety,Chinese governments had paid highly attention on the landslide disaster and launched some and active measures.Anti-slide pile is one of the main measures in the treatment of landslide It has been widely used in the Three Gorges reservoir area.However the design parameters of the anti-slide pile are random selection relatively,therefore it is difficult to meet the safety of the slope and save the investment cost in the slope control engineering at the same time.during the design of Anti-slide pile it is often designed conservatively or has great security risk otherwise.it has a great significance to the optimization of anti-slide pilesThe Ercengyan landslid is researched in this paper,which is in Wanzhou district Chongqing city the Three Gorges reservoir area.It is mainly aimed at optimizing the parameters such as cross section pile spacing and embedding depth by the numerical model Based on the analysis of the internal force of the anti-slide pile,when the different pile size,different pile spacing and different buried depth is considered we consider the selection of the most reasonable pile cross-section pile spacing depth by the stability of slope stability the establishment of anti-slide pile stability analysis system then receiving the lowest cost of anti-slide pile by the economic rationality.The main research contents are as follows:(1)Researching the interaction mechanism between landslid and anti-slid piles,which analyzes the relationship between design parameters of slop-resistant piles and slop stability.Finding suitable method of the internal force calculation to analyze the force calculation method of different anti-slide piles.There are problems in the design of anti-slide piles in practical engineering to study the basic requirements of anti-slide piles.(2)Based on the interaction mechanism between the anti-slide pile and the landslide body in the simplified model we use a the simplified model with finite element strength reduced method in PLAXIS 3D slop model software.The relationship between soil arching effect of corresponding pile body under different pile spacing is simulated,and the variation of the internal force pile top displacement and landslide safety loading coefficient of different pile spacing,section size and embedded depth which analyzes the most reasonable range of pile spacing section size and embedded depth.(3)Based on the stability analysis of ErCengYan landslide the influence of different pile spacing,section size and embedded depth on landslide under different reservoir water level conditions and the influence of reservoir water level on pile design parameters under different rate of descent,the optimal design scheme of anti-slide pile is put forward.