超长单桩竖向承载力影响因素有限元分析

Finite Element Analysis of Factors Influencing Vertical Bearing Capacity of Super-long Bored Piles

为了解超长单桩基础的承载性状,利用大型有限元分析软件ANSYS,对超长单桩的承载性状进行参数仿真分析。详细分析桩长、桩径、桩身弹性模量和土变形模量对超长桩基础的荷载-位移曲线的影响规律。研究得出:超长桩的长径比不应超过80,桩身弹性模量和土体变形模量的增加都会提高超长单桩的竖向承载力。

In order to make clear for the bearing characters of super-long simple pile,a lot of parameters of super-long simple piles were analyzed using ANSYS software.The effect of the pile length,diameter,elastic modulus and the Young＇s modulus of soil on its load-settlement curve was obtained.The results indicate that the aspect ratio of the pile should not be more than 80,and the increases of the elastic modulus of pile and the Young＇s modulus of soil will improve the bearing capacity of the super-long simple pile.