Variation Law of Internal Force of Small Bored Pile with Anchoring Length
In order to explore the influence of anchoing length on pile displacement and internal force,The background of this paper is the landslide rescue and treatment project of Zhengxi Highway in Guizhou province,this paper calculated the theoretical anchoing length of the cast-in pile with empirical method,and used FLAC3D to numerically simulate the conditions of different anchorage lengths.The results show that(1)When the anchoring length of small bored piles is less than 2 m,the loads of piles at different posi-tions are unbalanced,except for the back piles close to the landslide thrust,the remaining piles hardly bear the shear force;(2)When the anchoring depth of small-diameter borehole grouting pile group is 6～8 m,the pile stress distribution among each row of piles is more balanced,and when the anchoring depth exceeds 8 m,the stress peak value increases and the stress distribution becomes more concentrated.(3)The anchoring depth of small bored pile body should be controlled at about 8 m,and the internal force distribution of pile body is the most balanced.Under the condition of ensuring support performance,the economic effect is the highest at this time.
small bored pileanchoing lengthinclined pileinternal force of pile
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