叶片参数对压入式自旋桩头竖向承载力影响研究

The Influence of Blade Parameters on the Vertical Bearing Capacity of the Pressed Spin Head of Pile

压入式自旋桩头(以下简称自旋桩头)是一种提高承载力的新型桩头。目前其桩型设计、叶片参数对极限承载力影响的研究尚少,文章通过对11根自旋桩头在砂土中进行承载力试验,实测了单桩的荷载-位移曲线,分析叶片的升角、叶片的数量、叶片宽度等参数对自旋桩头承载力影响。试验结果表明:自旋桩头叶片参数的变化对其承载力具有显著影响。

Pressed spin head of pile（the following referred to as spin head of pile） is a method to improve the bearing capacity of the new type of pile head. At present, there are few studies on the influence of pile type design and blade parameters for ultimate bearing capacity. This paper analyzes the bearing capacity by eleven spin head of piles in sand. The experimental results show that the change of the parameters of spin head of pile has a significant effect on the bearing capacity.