|Table of Contents|

Simplified Calculation Model for Vertical Vibration of Compaction Pile in Saturated Soil(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2011年01期
Page:
42-48
Research Field:
Publishing date:
2011-03-20

Info

Title:
Simplified Calculation Model for Vertical Vibration of Compaction Pile in Saturated Soil
Author(s):
LI Qiang1;  WANG Kui-hua2;  ZHANG Zhi-qing3
1. Department of Civil Engineering, Zhejiang Ocean University, Zhoushan 316004, Zhejiang, China; 2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, Zhejiang, China; 3. School of Urban Planning, Zhe
Keywords:
geotechnical engineering;  interaction of pile and soil;  vertical vibration;  saturated soil;  pore pressure;  compaction pile
PACS:
TU473.12
DOI:
-
Abstract:
A simplified calculation model for vertical vibration of compation pile considering the inhomogeneous compaction zone of soil in the vicinity of the pile disturbed by pile driving was established. An analytical solution was deduced in frequency domain by means of variable separating method and then a semi-analytical solution in time domain was obtained using numerical convolution method. Numerical calculation results from the frequency domain and time domain indicate that the equivalent radius of compaction zone has major effect on pile dynamic response, as well as the ratio of exceeding pore pressure. It can also be concluded that the actual interaction of pile and soil will be weaken due to the compaction zone caused by pile driving, a fact can be deduced that the interaction of pile and soil is overestimated under the ideal undisturbed model. The presented model can reflect the interaction of pile and soil better than the perfect contact model. Small strain reflected wave test of compaction pile can be conducted as soon as possible in order to obtain greater depth of pile test in practical engineering.

References:

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Last Update: 2011-03-20