摘要
基于Winkler地基梁模型,提出了计算分层土中单桩动力阻抗的有限元方法。假设土的弹性模量为随机场,利用Neumann随机有限元法得到了单桩水平动力阻抗的统计特性。在分析了动力相互作用因子的统计特性后,推导了群桩的水平动力阻抗的统计表达式。最后通过算例分析,得到了一些有意义的结论。
Based on the beam model on Winkler foundation, the finite element method for calculating the horizontal dynamic impedances of single pile in layered soil was set up. The elastic modulus of the layered soil was assumed as random field. The statistics of horizontal dynamic impedances of single pile in layered soil was derived utilizing the Neumann Stochastic finite element method. Furthermore, the statistics of dynamic interaction factors were studied and the statistic expressions of dynamic impedances of group piles were presented. Several significant conclusions were obtained through analyzing the examples.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2006年第5期582-586,共5页
Chinese Journal of Geotechnical Engineering
基金
武汉理工大学科学研究基金项目
关键词
动力阻抗
桩-土动力相互作用
随机场
随机有限元
dynamic impedance
pile-soil dynamic interaction
random field
stochastic finite element method
