噪声与振动控制2018，Vol.38Issue(2)：127-132,6.DOI:10.3969/j.issn.1006-1355.2018.02.025
桩顶固定且部分桩体埋入黏弹性地基中时桩的自振特性分析
Analysis of Vibration Characteristics of Piles with Top Fixed and Part Embedded in a Viscoelastic Foundation
摘要
Abstract
The reverberation-ray matrix method is extending to the vibration analysis of pile- foundation systems. Based on the Winkler foundation model and Timoshenko beam theory,the vibration characteristics of the pile with top fixed and part embedded in an elastic foundation are solved by the reverberation-ray matrix method and the root method. The calculation result is compared with that of SAP2000 software. The effectiveness and accuracy of this method is verified. Meanwhile,the influences of soil spring coefficient and soil damping coefficient of the foundation on the natural frequencies and modals of the pile foundation are analyzed. The results show that the natural frequency of the embedded structure increases with the soil spring coefficient increasing;the soil spring coefficient has little effect on the attenuation coefficient and has small influence on the modals of the embedded structure;when the soil damping coefficient decreases,the natural frequency of the embedded structure increases and the attenuation coefficient of the embedded structure decreases correspondingly;the soil damping coefficient has an obvious influence on low-order modals and a small influence on high-order modals.关键词
振动与波/回传射线矩阵法/黏弹性/桩基/自振频率/衰减系数Key words
vibration and wave/reverberation-ray matrix method/viscoelasticity/pile foundation/natural frequencies/attenuation coefficient分类
数理科学引用本文复制引用
柳伟,余云燕..桩顶固定且部分桩体埋入黏弹性地基中时桩的自振特性分析[J].噪声与振动控制,2018,38(2):127-132,6.基金项目
甘肃省基础研究创新群体资助项目(145RJIA332) （145RJIA332）
兰州交通大学优秀平台支持项目(201606) （201606）
国家自然科学基金资助项目(51268031) （51268031）
