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Pile resonance frequency damping relationship analysis of pile

Author: HuangLinBo
Tutor: LinPeng
School: Shantou University
Course: Architecture and Civil Engineering
Keywords: Pile Fracture Low Strain Dynamic Test Natural frequency Damp Steady-state excitation
CLC: TU473.16
Type: Master's thesis
Year: 2011
Downloads: 34
Quote: 0
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Abstract


The pile is the most common form the basis of geotechnical engineering. Because of pile foundation is a concealed engineering, pile foundation testing to determine the bearing capacity and integrity are always very concern of the engineering. The integrity of test pile generally use dynamic loading. Pile low strain dynamic test method, the premise is based on the theory of pile vibration frequency or stress wave propagation theory in pile. Pile low strain dynamic test method for its measurement cycle short, cost little, easy application, has been widely applied in the detection of pile body completeness. But due to differences in its theoretical model and actual situation, engineering practice, because of the pile soil damping coefficient etc using still needs not only depends on the static load test pile, and is associated with pile foundation type, geological conditions, caused by the tester experience different conclusions and affect the test validity and reliability. This article is based on the theory of the vibration of the pile by using the vibration frequency and the length of pile, directly determine the position of the pile foundation fracture by comparison and calculation in the process to avoid the pile soil damping uncertain factors such as the impact on the calculation results. This method is simple, and based on an engineering example of calculation shows its validity.

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