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Journal of the Korean Society of Hazard Mitigation 2013;13(4):107-112.
Published online August 31, 2013.
진동해머의 기계적 진동특성에 대한 연구
, 윤기용
A Study on Mechanical Vibrational Properties of Vibro-hammer
Seunghyun Lee, Kiyong Yoon, Eungseok Kim
Abstract
Vibrational properties of vibro-hammer were studied and the influences of eccentric moment, frequency, vibratory mass and spring constant to the amplitude, acceleration, spring force and theoretical power were analyzed. Existing approach of determining input of pile head force which is necessary for analyzing a pile constructed by vibro-hammer were reviewed and rational one was suggested. In addition, existing governing equation shown in the literature, which simulates the vibrating system of vibrator/pile was modified through rational evaluation.
Key Words: Vibrational properties; Vibro-hammer; Input of pile head force; Governing equation
요지
진동해머의 진동특성을 살펴보고 편심모멘트, 진동수, 진동질량, 스프링상수가 진동해머의 진폭, 가속도, 스프링작용력 그리고 이론적일률에 미치는 영향을 분석하였다. 진동해머에 의해 시공되는 말뚝의 해석을 위한 말뚝머리하중결정에 관하여 기존의 접근법에 있어서의 오류를 파악하고 합리적 접근법을 제시하였다. 또한 진동해머/말뚝의 진동시스템을 표현하는 기존의 지배방정식을 합리적으로 수정 제안하였다.
핵심용어: 진동특성; 진동해머; 말뚝머리하중; 지배방정식


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