嵌岩扩底桩与等截面桩桩顶抗拔位移数值模拟比较

Numerical simulation and comparative analysis of the displacement of rock-socketed bottom-expanding pile and equal-section pile

鉴于扩底抗拔桩是在等截面抗拔桩的基础上发展而来,本文采用有限元软件ANSYS及有限差分软件FLAC3D,结合现有研究成果,考虑嵌岩扩底抗拔桩的承载特点、破坏过程和桩-岩界面的关系,尝试分析嵌岩扩底桩与等截面桩桩顶抗拔位移的关系,数值模拟结果为后续优化设计效果评价中桩顶位移计算提供一定的理论依据。

Given of uplift piles is waiting on the cross section and develops on the basis of uplift piles, this paper USES the finite element software ANSYS and finite difference software FLAC 3D , combined with the existing research results, considering the rock-socketed of uplift pile bearing characteristics and damage of rock interface relations, tries to analyze rock-socketed expanding bottom pile with uniform-section pile disobey one's superior to the relationship of displacement, and the results of numerical simulation on the evaluation of the effect of optimization design for subsequent provide certain theoretical basis for calculation of the displacement of pile.