Investigation On Double-Row Anti-Sliding Piles

As a kind of enginnering measure, anti-slide pile has obtained widely application in slope reinforcement engineering and treatment of landslide geological disasters. However, there are many problems corcerning the mechanics of anti-slide pile such as the interaction effect between pile and soil to be sloved . The design of anti-slide piles has to depend on the experience of the engineerers, especially in the design of double row piles.The main aim of this paper is to study the mechanism of double row piles. The software of Abaqus was used for the finite element calculation. Elasto-plastic model following Mohr-Coulomb law was employed for the sliding body, and the slip band was taken as contact interface. Taken as contact problem, the problem was sloved with penalty function method. The influences of spacing between fore row and after row piles, the size of piles on the thrust force and internal forces of piles were analyzed. Finally, the resluts of the research were demonstrated to design an double row anti-slide piles. Following conclusions are obtained :1. The thrust force and internal forces of piles can by solved with FEM more exactly than the conventional calculating method in present design.2. The spacing between fore and after piles has more influences on the magnitude of internal forces and thrust force of the piles, less influences on the distributing form of them.3. Generally, under the condition of same sizes for the fore and after piles, the internal forces and thrust force of the after pile are larger than those of the fore pile and the forces of after pile will decrease as the spacing increase.4. The variation of the sizes of pile will change the forces of pile itself more prominently than those of pile at the other row.