液化土中桩水平振动响应分析

余俊; 何月; 张立; 黄娟; 潘伟波

doi:10.11779/CJGE201703023

液化土中桩水平振动响应分析 English Version

中南大学土木工程学院,湖南长沙 410075

基金项目: 国家自然科学基金项目（51008311）; 教育部高等学校博士学科点专项科研基金项目（20100162120037）

详细信息

作者简介:
余俊(1978- ),男,湖北武汉人,博士,副教授,主要从事隧道与地下工程、土-结构相互作用等方面的教学和科研。E-mail: jjyy1017@163.com。

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出版历程
- 收稿日期: 2015-12-05
- 发布日期: 2017-04-24

Dynamical characteristics of piles in liquefied soil under horizontal vibration

School of Civil Engineering, Central South University, Changsha 410075, China

摘要

摘要: 将完全液化土体考虑成流体,研究了已液化土体中桩的水平振动问题。用流体运动方程模拟完全液化土体,用Biot动力固结模型模拟未液化饱和土层,用分离变量法求解流体振动方程,结合桩水平振动方程和桩-液化土耦合条件得到液化土-桩水平振动解,考虑液化土体和饱和土体的连续条件、桩身位移和内力连续条件以及桩底部嵌固条件,采用矩阵传递法得到液化土-饱和土分层条件下桩顶阻抗的表达式。将解退化为水中悬臂梁振动问题,与已有解进行对比,验证了本文解的正确性。进行参数分析,表明液化层厚度和流体密度对桩顶阻抗影响较大。
- 液化土 /
- 流体 /
- 耦合 /
- 水平振动

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参考文献(18)

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