土工基础

›› 2017, Vol. 31 ›› Issue (4): 449-452.

• 工程实录 • 上一篇    下一篇

挤扩支盘支护桩桩模试验与PLAXIS数值分析结果的对比

于 鹏1，李启民1，陈璐璐2   

  1. （1.中国地质大学（北京）水资源与环境学院，北京 100083；2.吉林省宏盛工程检测有限公司，长春 130012）
  • 收稿日期:2016-11-23 修回日期:2016-12-01 出版日期:2017-08-20 发布日期:2017-08-22
  • 作者简介:于 鹏（1990-），男，硕士研究生，研究方向为水文地质工程地质。

Expanded Shaft Piles for the Excavation Supporting and PLAXIS Analysis Results

YU Peng1, LI Qimin1, CHEN Lulu2   

  1. (1.School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083；
    2.Hongsheng Engineering Detection of Jilin Province Co., Ltd., Changchun 130012)
  • Received:2016-11-23 Revised:2016-12-01 Online:2017-08-20 Published:2017-08-22

摘要： 挤扩支盘支护桩是一类新型支护桩，其结构特点是部分桩体横截面积大于桩顶。介绍了挤扩支盘支护桩这种新型的支护形式，探讨了在加荷载作用下直桩与挤扩支盘支护桩的水平位移特点，利用有限元软件PLAXIS分别采用摩尔—库仑模型（MC模型）和土体硬化模型（HS模型）进行模拟计算，得到了挤扩支盘支护桩应用和本构关系模型选择的合理化建议。

关键词: 挤扩支盘支护桩, 对比, 本构关系模型

Abstract: Theexpanded shaft pile is a new kindof supporting form.This paper presents application of the expanded shaft piles in the excavation supporting and the PLAXIS analysis results. The performance of this new supporting system under the lateral earth pressures are discussed. The numerical analysis using MohrCoulomb (MC) and Hardening Soil (HS) models. The paper provides suggestions of practical application of the expanded shaft pile and the constitutive model selections in the numerical analysis.

Key words: Expended Shaft Piles, Comparisons, Constitutive Models