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| 饱和土中桩水平振动引起土层复阻抗分析研究 | |
| 引用本文： | 余俊,尚守平,李忠,任慧.饱和土中桩水平振动引起土层复阻抗分析研究[J].岩土力学,2009,30(12):3858-3864. |
| 作者姓名： | 余俊 尚守平 李忠 任慧 |
| 作者单位： | 1. 中南大学,土木建筑学院,长沙,410075 2. 湖南大学,土木工程学院,长沙,410082 3. 同济大学,地下建筑与工程系,上海,200092 |
| 基金项目： | 湖南省自然科学基金，国家自然科学基金，博士点基金新教师基金 |
| 摘 要： | 基于Biot动力固结方程，研究了饱和土中端承桩在水平振动时产生的土层复阻抗特性。对动力固结方程进行变型，采用算子分解及分离变量法得到简谐稳态水平振动下土层复阻抗动力响应的解析解。将该解与等效单相解以及单相解进行了对比，并阐明各解之间的关系，指出可等效成等效单相解的条件。通过参数分析，剖析了渗透系数、桩土模量比和桩长径比对土层阻抗的影响。 |
| 关 键 词： | 饱和土 水平振动 等效单相解 复阻抗因子 |
| 收稿时间： | 2008-06-22 |
Study of resitance factor of saturated soil caused by horizontal vibration of pile |
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| YU Jun,SHANG Shou-ping,LI Zhong,REN Hui.Study of resitance factor of saturated soil caused by horizontal vibration of pile[J].Rock and Soil Mechanics,2009,30(12):3858-3864. | |
| Authors: | YU Jun SHANG Shou-ping LI Zhong REN Hui |
| Institution: | 1. School of Civil Engineering and Architecture, Central Sounth University, Changsha 410075, China; 2. College of Civil Engineering, Hunan university, Changsha 410082, China; 3. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
| Abstract: | Based on Biot’s consolidation equation,the characteristics of the resistance of soil caused by horizontal vibration of elastic bearing pile embedded in saturated soil are analytically studied. Transforming the consolidation equation, by virtue of differential operator splitting and variable separation method, the horizontal dynamical characteristics of soil under steady state of pile-soil interaction are obtained. The comparisons with the equivalent single-phase solution and the single-phase solution are presented; and the condition of the solution that can be equivalent to the equivalent single-phase solution is indicated. A parametric study is conducted to determine the main features of pile-soil interaction in horizontal vibration, the effects of the permeability coefficient, the pile-soil modulus ratio and the pile slenderness on resistance of soil layer are studied. |
| Keywords: | saturated soil horizontal vibration equivalent single-phase solution impedance |
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