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Nonholonomic uneven soil pile lateral vibration problems

Author: LongLiLi
Tutor: LiuDongJia
School: Hefei University of Technology
Course: Geological Engineering
Keywords: Low-strain testing of piles Bernoulli-Euler beam Timoshenko beam The transfer function Transient Lateral Dynamic Response
CLC: TU473.1
Type: Master's thesis
Year: 2010
Downloads: 20
Quote: 3
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Abstract


This paper respectively with Euler Bernoulli beam model and Timoshenko beam model is established in uneven soil china-africa complete pile top under lateral impact load dynamic model and mathematical model. Analytically by Laplace transform in frequency domain transfer function of pile soil system, and in order to solve the problems of the high frequency part precision loss, through constructing the delta matrix to represent the transfer function of pile top lateral vibration velocity and displacement in the frequency domain expression, further through fast Fourier inverse transformation for time domain expression of velocity and displacement. Then the expression is used to calculate velocity and displacement curve drawing, the analysis of the parameters in the pile integrity to speed, the influence of the displacement of the pile head, and the complete displacement of pile top speed and curve features. Finally, through the test pile of the measured velocity curve and Bernoulli Euler beam model and theory of Timoshenko beam model, comparing the speed curve confirmed using Timoshenko beam model analysis under low strain pile foundation is obviously better than the lateral vibration of the Bernoulli Euler beam model.

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > Pile foundation and deep foundation > Pile
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