Open AccessTorsional vibration solution of tapered pile considering stress diffusion effect of pile end soil
Author(s) -
Wenjie Guan,
Wenbing Wu,
Guosheng Jiang,
Chin Jian Leo,
Hao Liu
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/304/3/032095
Subject(s) - pile , torsional vibration , structural engineering , laplace transform , vibration , materials science , parametric statistics , geotechnical engineering , diffusion , pile cap , stress (linguistics) , mechanics , engineering , physics , acoustics , mathematics , mathematical analysis , statistics , thermodynamics , linguistics , philosophy
Based on the torsional plane strain model and tapered fictitious soil pile model, the torsional vibration characteristics of tapered pile considering stress diffusion effect of pile end soil is investigated theoretically. Considering the coupling conditions of pile-soil system, the torsional impedance at the tapered pile head is obtained by means of Laplace transform and impedance transfer method. A parametric study is performed, the rationality of the tapered fictitious soil model is verified and the influence of the cone angle of tapered fictitious soil pile on the torsional vibration characteristics of tapered pile embedded in layered soil is studied. The results show that: the cone angle of tapered fictitious soil pile has obvious effect on the torsional vibration characteristics of tapered pile with the shorter length.