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http://dx.doi.org/10.12814/jkgss.2019.18.3.069

Analysis of Free Vibration Characteristics of Tapered Friction Piles in Non-homogeneous Soil Layers  

Lee, Joon Kyu (Department of Civil Engineering, University of Seoul)
Ko, Junyoung (Department of Civil Engineering, Chungnam National University)
Lee, Kwangwoo (School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Federale de Lausanne)
Kim, Dongwook (Department of Civil and Envirionmental Engineering, Incheon National University)
Publication Information
Journal of the Korean Geosynthetics Society / v.18, no.3, 2019 , pp. 69-77 More about this Journal
Abstract
This paper presents a new analytical model for estimating the free vibration of tapered friction piles. The governing differential equation for the free vibration of statically axially-loaded piles embedded in non-homogeneous soil is derived. The equation is numerically integrated by the Runge-Kutta method, and then the eigenvalue of natural frequency is determined by the Regula-Falsi scheme. For a cylindrical non-tapered pile, the computed natural frequencies compare well with the available data from literature. Numerical examples are presented to investigate the effects of the tapering, the skin friction resistance, the end condition of the pile, the vertical compressive loading, and the soil non-homogeneity on the natural frequency and mode shape of tapered friction piles.
Keywords
Tapered pile; Natural frequency; Mode shape; Skin friction; Non-homogeneous soil;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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