土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (1): 83-87.

• 专题论述 • 上一篇    下一篇

基于CEL法的静压钢板桩端阻与侧阻分析

高振宇1，李宇航2，杨雪强2，王 坤2   

  1. (1.广东首汇蓝天工程科技公司, 广州 510000；2.广东工业大学，广州 510006）
  • 收稿日期:2021-04-14 修回日期:2021-11-24 出版日期:2023-02-24 发布日期:2023-03-08
  • 通讯作者: 杨雪强(1966-)，男，教授，博士，研究方向为岩土本构关系及边坡稳定等。
  • 作者简介:高振宇(1978-)，男，博士，高级工程师，研究方向为静压植桩机关键技术。
  • 基金资助:
    基金项目：国家自然基金青年基金项目(51809050)

End Bearing and Side Resistances of the Static Pressed Steel Sheet Pile Using on CEL Method

GAO Zhenyu1, LI Yuhang2, YANG Xueqiang2， WANG Kun2   

  1. (1.Guangdong Sohui Technology Group, Guangzhou 510000；
    2.Guangdong University of Technology, Guangzhou 510006)
  • Received:2021-04-14 Revised:2021-11-24 Online:2023-02-24 Published:2023-03-08

摘要： 为研究静压钢板桩在层状土层中的沉桩阻力变化规律，运用ABAQUS有限元软件建立静压钢板桩层状土层模型，探讨了沉桩过程中沉桩阻力随沉桩深度的变化特征；同时结合工程实例，对砂土层采用不同本构模型(如扩展Drucker-Prager模型与Mohr-Coulomb模型)进行了对比分析研究。研究结果表明：钢板桩在连续贯入过程中，桩端阻力在近地表处最大，随后逐渐减小并趋于稳定；桩侧阻力随着贯入深度的增加而逐渐增大，且在3 m以下的变化趋势与总阻力一趋势致。研究成果可为静压钢板桩工程实践提供借鉴与参考。

关键词: 钢板桩, 沉桩分析, 桩端阻力, 桩侧阻力, 数值模拟

Abstract: To study the variation of the pile driving resistance of static pressed steel sheet pile in layered soils, a layered soil model of the static pressed steel sheet pile is established by using the ABAQUS finite element software. The variation characteristics of the pile driving resistance with the pile penetration depth in the process of the pile driving are discussed in this paper. At the same time, comparative studies are performed with different constitutive models (such as extended Drucker Prager model and Mohr Coulomb model) in sand layer in combination with an engineering case history. The results show that the resistance of the steel sheet pile increases gradually with the penetration depth of 3 meters, and then tends to be stable. The research results can provide a reference for the engineering practice of similar static pressed steel sheet piles. 

Key words: Steel Sheet Pile, Pile Penetration Analysis, End Bearing Resistance, Side Friction Resistance, Numerical Simulation

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