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 。
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.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2004年第5期679-683,共5页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金资助项目 (50 2 790 4 7)
关键词
饱和土
弹性支承桩
纵向振动
复阻抗因子
saturated soil
elastic bearing pile
longitudinal vibration
complex resistance factor
