饱和土桩纵向振动引起土层复阻抗分析研究

李强; 王奎华; 谢康和

饱和土桩纵向振动引起土层复阻抗分析研究 English Version

浙江大学建工学院岩土工程研究所；浙江大学建工学院岩土工程研究所浙江杭州310027安徽理工大学土木系；安徽淮南232001；浙江杭州310027；

基金项目: 国家自然科学基金资助项目 (50 2 790 4 7)

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出版历程
- 发布日期: 2004-09-22

Study on resistance factor of saturated soil caused by longitudinal vibration of pile

1.Institute of Geotechnical Engineering ZheJiang University Hangzhou 310027 China 2.Department of Civil Engineering AnHui University of Science and Technology Huainan 232001 China

摘要

摘要: 主要研究了三维轴对称条件下饱和土层中弹性支承桩纵向振动产生的土层阻抗因子特性 ,建立了桩振动引起的饱和土层振动模式 ,结合饱和土中波传播特性对土层阻抗因子进行模态分析 ,并剖析了渗透力、土层厚度、土层底部反力系数、桩土模量比对土层阻抗的影响 ,最后与单相弹性退化解、忽略径向运动的两相简化解及胡昌斌的粘弹性解进行对比 ,阐明了各种解之间的关系
- 饱和土 /
- 弹性支承桩 /
- 纵向振动 /
- 复阻抗因子
Abstract: The characteristics of the resistance factor of soil caused by longitudinal vibration of elastic bearing pile embedded in saturated soil layer are analytically studied by using three-dimensional axisymmetric model. The dynamic model of the saturated soil layer effected by longitudinal vibration of the pile is founded. Taking into account the wave propagations in the saturated soil layer, characteristics of the resistance factor of soil are analyzed. The effects of the seepage force, the depth of soil layer,the reaction coefficient of soil and the modulus ratio of pile and soil on the soil resistance are studied. The comparisons among the 3D axisymmetric solution, the single-phase degenerated solution, the two-phase solution neglecting the radial motion and Hu Changbin’s visco-elastic solution are presented at last.
- saturated soil /
- elastic bearing pile /
- longitudinal vibration /
- complex resistance factor