岩土力学2011，Vol.32Issue(9)：2856-2860,5.
基于FLAC3D的超长大直径钢管桩竖向承载特性模拟
Simulation of vertical bearing features for large-diameter and super-long steel pipe pile based on FLAC3D
摘要
Abstract
More and more large-diameter and super-long steel pipe piles are applied to engineering in recent years. But so far , few people have focused on studing their bearing characteristics. Computational theory of ordinary piles is referenced in the foundation design. Vertical bearing and settlement features are simulated for large-diameter and super-long steel pipe piles based on the fast Lagrangian analysis of continua in three dimensions (FLAC3D). Then comparison between simulation results and the results of vertical static load bearing capacity test is conducted and they are complemented and verified each other. The consistent results demonstrate that the method of using the finite difference procedure in this paper to preliminarily simulate the vertical load-bearing characteristics and settlement characteristics of large-diameter and super-long steel pipe pile is feasible. The study shows that the large-diameter and super-long steel pipe pile is a typical end-bearing friction pile. The pile lateral friction resistance changes intricately with depth, which is closely related to the soil characteristics. And the transferring speed of pile axial force depends on the action of pile lateral friction resistance in the different soil. These conclusions are of significance for the reasonable large-diameter and super-long steel pipe pile foundation designed in engineering applications.关键词
超长大直径钢管桩/三维连续介质快速拉格朗日法/竖向承载特性Key words
large diameter and super long steel pipe piles/ fast Lagrangian analysis of continua in three dimensions/ vertical bearing features分类
建筑与水利引用本文复制引用
张明远,黎生南,彭文韬,宋华珠..基于FLAC3D的超长大直径钢管桩竖向承载特性模拟[J].岩土力学,2011,32(9):2856-2860,5.基金项目
国家自然科学基金面上项目(No.50709036). （No.50709036）
