Field test and numerical simulation for dynamic characteristics of 
cast-in-place pile

DING Yang; XIONG Ye; CHEN Zi-zi; WU Xiao-han; WANG Xiao-bo

doi:10.16285/j.rsm.2021.2198

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Field test and numerical simulation for dynamic characteristics of cast-in-place pile

更新时间：2026-06-25

- Field test and numerical simulation for dynamic characteristics of cast-in-place pile
- Vol. 43, Issue S2, Pages: 640-646(2022)
- 作者机构：
  
  1. 军事科学院国防工程研究院,湖北,武汉,430010
  2. 中航勘察设计研究院有限公司,北京,100098
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2021.2198
  CLC： TU473.1
- Online First：10 October 2022，
  
  Published：2022
- 稿件说明：
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DING Yang, XIONG Ye, CHEN Zi-zi, et al. Field test and numerical simulation for dynamic characteristics of cast-in-place pile[J]. 2022, 43(S2): 640-646.
DOI：

DING Yang, XIONG Ye, CHEN Zi-zi, et al. Field test and numerical simulation for dynamic characteristics of cast-in-place pile[J]. 2022, 43(S2): 640-646. DOI： 10.16285/j.rsm.2021.2198.

摘要

结合某风洞建设项目现场桩基动力特性试验，采用三维有限差分模拟软件FLAC建立双桩模型基础进行计算机仿真，分析结果与试验数据吻合良好，验证了基于桩−土−结构共同作用开展数值模拟求解设备荷载作用下桩基础动力响应方法的合理性。进一步建立灌注桩后注浆模型，探讨采取不同桩侧阻力和桩端阻力增强系数对桩基动力特性的影响。结果表明：灌注桩后注浆对竖向振动的共振频率没有影响，对水平回转振动的共振频率、最大振幅、地基抗剪刚度系数和地基水平转向第1振型阻尼比的影响均很小；灌注桩后注浆能起到提高桩基抗压刚度、减少桩基最大振幅的效果，但相对于未注浆其效果有限。

Abstract

Combined with the dynamic testing of pile foundation in a wind tunnel construction project

three-dimensional finite difference simulation software FLAC is used to simulate the double-pile model foundation. The numerical results are in good agreement with the experimental data

which verifies the rationality of numerical method based on the pile-soil-structure interaction to solve the dynamic response of the pile foundation under the equipment load. The post-grouting model of cast-in-place pile is further established to explore the influence of different lateral resistance and tip resistance enhancement coefficients on the dynamic characteristics of the pile foundation. The results show that the post-grouting of cast-in-place pile has no influence on the resonance frequency of the vertical vibration. The post-grouting of cast-in-place pile has slight influence on the resonance frequency of the horizontal rotary vibration

the maximum amplitude

the shear stiffness coefficient of the foundation

and the first mode damping ratio of the horizontal turning of the foundation. The post-grouting of cast-in-place pile can improve the compressive stiffness and reduce the maximum amplitude of the pile foundation

but its effect is limited compared with the non-grouting pile.

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