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Longitudinal vibration characteristics of a tapered pipe pile considering the vertical support of surrounding soil and construction disturbance

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This research is concentrated on the longitudinal vibration of a tapered pipe pile considering the vertical support of the surrounding soil and construction disturbance.First,the pile-soil system is partitioned into finite segments in the vertical direction and the Voigt model is applied to simulate the vertical support of the surrounding soil acting on the pile segment.The surrounding soil is divided into finite ring-shaped zones in the radial direction to consider the construction disturbance.Then,the shear complex stiffness at the pile-soil interface is derived by solving the dynamic equilibrium equation for the soil from the outermost to innermost zone.The displacement impedance at the top of an arbitrary pile segment is obtained by solving the dynamic equilibrium equation for the pile and is combined with the vertical support of the surrounding soil to derive the displacement impedance at the bottom of the upper adjacent segment.Further,the displacement impedance at the pile head is obtained based on the impedance function transfer technique.Finally,the reliability of the proposed solution is verified,followed by a sensitivity analysis concerning the coupling effect of the pile parameters,construction disturbance and the vertical support of the surrounding soil on the displacement impedance of the pile.

tapered pipe pilelongitudinal vibrationvertical support of the surrounding soilconstruction disturbancedisplacement impedance

Li Zhenya、Pan Yunchao、He Xianbin、Lv Chong、Mohammad Towhid

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Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China

Geotechnical Research Institute,Hohai University,Nanjing 210098,China

MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Zhejiang University,Hangzhou 310058,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaCentral Government Guides Local Science and Technology Development Fund ProjectsCentral Government Guides Local Science and Technology Development Fund ProjectsFoundation of Key Laboratory of Soft Soils and Geoenvironmental Engineering(Zhejiang University) Ministry of EducationFoundation of Key Laboratory of Soft Soils and Geoenvironmental Engineering(Zhejiang University) Ministry of EducationCentral University Basic Research Fund of ChinaCentral University Basic Research Fund of China

under Gr51808190under GrXZ202301YD0019Cunder Gr2022P04under GrB220202017

2024

https://10.1007/s11803-024-2227-y

地震工程与工程振动(英文版)
中国地震局工程力学研究所

地震工程与工程振动(英文版)

EI
影响因子：0.476
ISSN：1671-3664
年,卷(期)：2024.23(1)
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