开口管桩高频振动贯入过程的ALE有限元分析

肖勇杰 陈福全 林良庆

肖勇杰, 陈福全, 林良庆. 2016: 开口管桩高频振动贯入过程的ALE有限元分析. 工程地质学报, 24(3): 398-408. doi: 10.13544/j.cnki.jeg.2016.03.009
引用本文: 肖勇杰, 陈福全, 林良庆. 2016: 开口管桩高频振动贯入过程的ALE有限元分析. 工程地质学报, 24(3): 398-408. doi: 10.13544/j.cnki.jeg.2016.03.009
XIAO Yongjie, CHEN Fuquan, LIN Liangqing. 2016: ALE FINITE ELEMENT ANALYSIS ON PENETRATION PROCESS OF OPEN-ENDED PIPE PILES DRIVEN WITH HIGH FREQUENCY HAMMERS. JOURNAL OF ENGINEERING GEOLOGY, 24(3): 398-408. doi: 10.13544/j.cnki.jeg.2016.03.009
Citation: XIAO Yongjie, CHEN Fuquan, LIN Liangqing. 2016: ALE FINITE ELEMENT ANALYSIS ON PENETRATION PROCESS OF OPEN-ENDED PIPE PILES DRIVEN WITH HIGH FREQUENCY HAMMERS. JOURNAL OF ENGINEERING GEOLOGY, 24(3): 398-408. doi: 10.13544/j.cnki.jeg.2016.03.009

开口管桩高频振动贯入过程的ALE有限元分析

doi: 10.13544/j.cnki.jeg.2016.03.009
基金项目: 

国家自然科学基金项目(41272299)资助

详细信息
    作者简介:

    肖勇杰(1988-),男,博士生,研究方向为土力学与基础工程、岩土工程数值分析.Email:xiao_yongjie@126.com

    通讯作者:

    陈福全(1971-),男,博士,教授,研究方向为土力学与基础工程、岩土工程数值分析、边坡工程.Email:phdchen@fzu.edu.cn

  • 中图分类号: TU473.1

ALE FINITE ELEMENT ANALYSIS ON PENETRATION PROCESS OF OPEN-ENDED PIPE PILES DRIVEN WITH HIGH FREQUENCY HAMMERS

  • 摘要: 任意拉格朗日-欧拉(ALE)方法吸取了拉格朗日和欧拉法的优点,避免了常规有限元中拉格朗日方法的网格畸变问题,适用于开口管桩高频振动贯入过程的计算分析。采用ALE有限元方法,建立开口管桩高频振动贯入过程的数值模型,对沉桩过程中挤土效应、桩侧阻力和土塞效应的变化规律进行了详细研究。研究结果表明:挤土应力主要沿径向传播,且深层土体受到的挤土应力比浅层土体大;水平挤土位移随管桩贯入深度的增加而增大,而最大水平挤土位移与管桩贯入深度存在累积效应;挤土效应的影响范围约为10倍管径,因此在施工过程中要给以足够重视;桩外侧摩阻力随贯入深度增加呈近似线性增长,桩内侧摩阻力随贯入深度增加而呈非线性增长,增长速率随贯入深度增加而逐渐增大;管内土塞处于不完全闭塞状态,土塞程度由完全非闭塞向部分闭塞过渡。此外,研究了土体模量、桩土界面摩擦系数、振动频率和桩径对土体位移的影响。
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出版历程
  • 收稿日期:  2015-03-11
  • 修回日期:  2015-04-29
  • 刊出日期:  2016-06-25

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