| 基于薄层法的饱和土桩纵向振动研究 |
| |
| 引用本文： | 刘林超,杨骁.基于薄层法的饱和土桩纵向振动研究[J].岩土力学,2010,31(1):92-98. |
| |
| 作者姓名： | 刘林超 杨骁 |
| |
| 作者单位： | 1. 信阳师范学院,土木工程学院,河南,信阳,464000
2. 上海大学,土木工程系,上海,20072 |
| |
| 基金项目： | 国家自然科学基金，上海市重点学科建设项目，上海市自然科学基金 |
| |
| 摘 要： | 在饱和多孔介质理论的基础上,将桩周土体看作液固饱和两相介质,借助于Novak薄层理论得到了饱和土层的竖向动力阻抗,研究了饱和土中桩的纵向耦合振动,并对比分析了采用三维模型和薄层法的结果,验证了结果的正确性。分析讨论了桩土主要力学参数对饱和土-桩耦合体系动力行为的影响。研究结果表明,桩的长径比、桩土模量比等对饱和土桩耦合体系纵向振动的影响相对较大,而土的黏滞阻尼系数和液固耦合系数的影响相对较小。
|
| 关 键 词： | 多孔介质 饱和土 纵向振动 动力阻抗 薄层法 |
| 收稿时间： | 2008-06-16 |
Study of longitudinal vibrations of pile in saturated soil based on layer method |
| |
| LIU Lin-chao,YANG Xiao.Study of longitudinal vibrations of pile in saturated soil based on layer method[J].Rock and Soil Mechanics,2010,31(1):92-98. |
| |
| Authors: | LIU Lin-chao YANG Xiao |
| |
| Institution: | 1. School of Civil Engineering, Xinyang Normal University, Xinyang 464000, China; 2. Department of Civil Engineering, Shanghai University, Shanghai 200072, China |
| |
| Abstract: | Based on porous medium theory, the longitudinal coupled vibrations of saturated soil-pile is investigated with layer method by regarding soil around of the pile as saturated porous medium. A comparative analysis between the results of the three-dimensional model and Novak layer method is carried out; and validity of the results is shown. The influences of main mechanical parameters of pile and soil on dynamic behaviors of coupled system is analyzed; the results indicate that the length-diameter ratio and modulus ratio of pile and soil have a great effect on dynamic behaviors of the pile in saturated soil; while the influences of damping coefficient and coupling coefficient are smaller. |
| |
| Keywords: | porous medium saturated soil longitudinal vibrations dynamic impedance layer method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
