噪声与振动控制2019，Vol.39Issue(5)：28-34,7.DOI:10.3969/j.issn.1006-1355.2019.05.006
与黏弹性地基相互作用的单桩的自振特性分析
Analysis for Natural Vibration Characteristics of a Single Pile in Viscoelastic Foundation
摘要
Abstract
The reverberation-ray matrix method is introduced to the vibration analysis of pile-foundation systems. The MATLAB code is used to solve the two-dimensional complex transcendental equation with the help of the root method. Through numerical examples of a pile in the viscoelastic foundation, the effects of the exposed length, the depth and the constraint condition of the pile on the natural frequency, attenuation coefficient and modals are analyzed and compared. The results show that the natural frequency and attenuation coefficient of the embedded structures decreases with the increase of the exposed length. When the buried depth decreases in the embedded structures, the natural frequency decreases and the attenuation coefficient increases. The transverse displacement of the buried part is obviously smaller than that of the exposed part. The natural frequency of the pile beneath the fixed top boundary is the largest, the attenuation coefficients of the pile beneath the free top boundary is the smallest. The vibration amplitude of the free top of the pile is smaller than that of the hinge top and the fixed top.关键词
振动与波/黏弹性/桩基/回传射线矩阵法/求根法/衰减系数Key words
vibration and wave/viscoelasticity/pile foundation/reverberation-ray matrix method/root method/attenuation coefficient分类
数理科学引用本文复制引用
柳伟,张斌伟,柳德龙..与黏弹性地基相互作用的单桩的自振特性分析[J].噪声与振动控制,2019,39(5):28-34,7.基金项目
2015年甘肃省自然科学基金和甘肃省高等学校科研基金资助项目(1506RJZM322 （）
2015A-151) （）
