摘要
推导了4+2节点动力无限元的位移形函数及坐标形函数,进而得到具有不同波动组合位移衰减形式的二维谐振无限元,并运用通用有限元软件建立了单桩动力荷载下的有限元-无限元(FEM-IEM)耦合模型,分析了竖向、水平及弯矩谐振作用下不同类型单桩在不同土性中的动力反应.计算结果证明,本文提出的耦合方法在计算效率和精度上具有优势.
The displacement shape function and coordinate shape function of dynamic infinite element with 4 ＋ 2 nodes are educed, and 2D harmonic infinite elements characterized by displacement attenuation pattern with different wave combination are obtained subsequently. By using the Finite Element Code, the FEM-IEM coupling models of single pile are created, and applying these, the dynamic responses of different single piles at various soil stratum are analyzed under the action of vertical, lateral or bend harmonic loads. It can be proved that this FEM-IEM coupling method has predominance when considering the calculated effect and precision.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第4期1-5,共5页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(50578062
50278033)
湖南省科技计划重点项目资助(06sk4057)
关键词
耦合法
相互作用
桩-土动态反应
谐振无限元
coupling
interaction
dynamic response of pile--soil
harmonic infinite element
