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选取典型抗滑桩截面(方形、矩形和圆形),采用离散元(DEM)手段,从细观角度对这三种横截面桩土拱效应的形成发育过程及相关影响因素进行分析研究。结果表明:三种抗滑桩桩后均有土拱效应产生,方形桩跟矩形桩所形成的土拱效应均大致呈半圆弧状,圆形桩的土拱效应则近似马鞍形;矩形桩所能承载的极限荷载最大,方形桩次之,圆形桩最弱;不同的影响因素对同类型的抗滑桩影响规律及程度均存在差异,同一影响因素对不同截面抗滑桩影响规律相同但影响程度不同。
The typical anti-slide pile sections (square, rectangle and circle) were selected. The formation and development process of the soil arching effect of the three kinds of cross-section piles and the related influencing factors were studied by using the discrete element (DEM) method. The results show that soil arching effect occurs after the three types of anti-slide piles. The soil arching effect formed by the square piles and the rectangular piles is almost semi-circular arc, while the circular arches approximate the saddle shape. The rectangular piles The ultimate load is the largest, followed by the square piles, and the round piles are the weakest. Different influencing factors have different effects on the same types of anti-slide piles and the same influence factors have the same influence on the anti-slide piles with different sections Different degrees.