Vertical vibration impedance of pipe pile embedded in radially and vertically inhomogeneous layered soil with viscous damping

CUI Chunyi; MENG Kun; LIANG Zhimeng; ZHAO Huijie

doi:10.11918/201904050

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Vertical vibration impedance of pipe pile embedded in radially and vertically inhomogeneous layered soil with viscous damping

更新时间：2026-10-22

- Vertical vibration impedance of pipe pile embedded in radially and vertically inhomogeneous layered soil with viscous damping
- Vol. 52, Issue 11, Pages: 113-119(2020)
- 作者机构：
  
  大连海事大学交通运输工程学院,辽宁,大连,116026
- 作者简介：
- 基金信息：
- DOI：10.11918/201904050
  CLC： TU443
- Published：2020
- 稿件说明：
移动端阅览
CUI Chunyi, MENG Kun, LIANG Zhimeng, et al. Vertical vibration impedance of pipe pile embedded in radially and vertically inhomogeneous layered soil with viscous damping[J]. 2020, 52(11): 113-119.
DOI：

CUI Chunyi, MENG Kun, LIANG Zhimeng, et al. Vertical vibration impedance of pipe pile embedded in radially and vertically inhomogeneous layered soil with viscous damping[J]. 2020, 52(11): 113-119. DOI： 10.11918/201904050.

摘要

管桩施工会使土体产生扰动

从而引起桩周土体沿桩基径向的不均匀性

为同时考虑桩周土体此种径向非均质效应和纵向成层特性对管桩纵向振动动力阻抗的影响规律

提出基于土体黏性阻尼的多圈层平面应变模型

建立双向非均质土中管桩纵向振动简化分析模型

利用拉普拉斯变换和阻抗函数的传递性

推导得出管桩桩顶动力阻抗解析解答

计算结果表明

纵向软硬夹层对一定低频区间内动力阻抗曲线振幅水平影响显著

夹层越软（硬）

共振频率处对应的动力阻抗曲线振幅水平越高（低）.施工扰动引起桩周土径向非均匀性对管桩桩顶复刚度曲线影响显著

在对管桩进行纵向振动特性分析时宜采用双向非均质黏性阻尼土-管桩相互作用模型推导所得解析解答更为合理.

Abstract

The construction of pipe pile will cause the inhomogeneity of the surrounding soil. By considering the influence of the radial inhomogeneity effect and the vertically layer characteristic on the vertical vibration dynamic impedance of pipe pile

a multi-circle plane strain model based on soil viscous damping was proposed

and a simplified model for vertical vibration analysis of pipe pile in radially and vertically layered soil was established. Based on the Laplace transformation and the transitivity of impedance function

the analytical solution of the dynamic impedance of the pile head was derived. Computational results show that the vertical soft and hard interlayer had a significant effect on the amplitude of the dynamic impedance curve in a certain low frequency range

where the softer (harder) the interlayer was

the higher (lower) the amplitude of the dynamic impedance curve at the resonance frequency became. The radial inhomogeneity caused by construction disturbance had a significant influence on the complex stiffness curve of the pile head. In the analysis of vertical vibration characteristics of pipe piles

the analytical solution derived by the proposed soil-pile interaction model was more reasonable.

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Related Author

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YANG Gang

ZHOU Xiaowen

LI Junqing

ZHOU Mi

Related Institution

Transportation Engineering College, Dalian Maritime University

Key Laboratory of Urban Security and Disaster Engineering (Beijing University of Technology)

Department of Civil Engineering, Shanghai University

State Key Laboratory of Subtropical Building Science (South China University of Technology)

South China Institute of Geotechnical Engineering(South China University of Technology)

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