Comparative Study on Bearing Characteristics of Y-Section Pile and Common Piles under Embankment Load

Research purposes: Based on the ABAQUS finite element analysis software,three kinds of finite element calculation models for Y-Section Pile,square pile and circular pile were established.The elastic model was employed for the pile,while Mohr-Coulomb elastic-plastic model for the soil.Under the case with the same pile layout and area exchange rate,the variations of the total and different settlements of cover plate and soil among adjacent piles,pile-top and pile-end average stress were investigated in the process of stage embankment loading. Research conclusions: It is known by comparison that the maximum settlement of cover plate occurs in the circular pile,followed by the square and Y-section piles the settlement of soil between piles for circular pile is largest,while that for square pile firstly greater and then less than Y-section pile the different settlement between cover plate and inter-pile soil for circular pile is of maximum,followed by Y-section and square piles the pile-top and pile-end average stress for square pile is greater than circular and Y-section piles in turn.