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非均质土层下基桩的动力稳定性研究 被引量:3

Dynamic Stability Analysis of Foundation Pile Under Non-homogeneous Soil
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摘要 本文根据桩在轴向谐振力作用下,探讨了非均质土层下基桩的动力稳定性问题,分析了各种地基土横向抗力系数K以及桩的几何特征、激振频率、桩土阻尼对桩动力稳定性的影响,结果表明,随地基土层的不同,基桩的动力不稳定区域将发生不同的变化,随桩径、桩长的增大,基桩的动力不稳定区域将逐渐减小,表明地基土的横向抗力对桩的动力稳定性起加强作用,桩土阻尼对基桩的动力稳定性影响较大,得出了一些有价值的结论,可为工程设计提供参考依据。 In this paper, based on the analysis of single pile under axial dynamic load, the problems of dynamic stability of foundation pile under non-homogeneous soil were discussed. The effects of various coefficient K of lateral resisting force of foundation soil, geometrical characteristics of pile, exciting frequency, as well as damping of pile and soil were studied. The results show that, the dynamic non-stability region will be changed with different soil, and the augmentation of length and diameter of pile lead to decrease the dynamic non-stability region. It is shown that the horizontal reaction force could strength the dynamic stability of pile. It is hoped that these may provide valuable basis for some engineering design.
作者 孙强 袁勇
出处 《力学季刊》 CSCD 北大核心 2002年第3期427-430,共4页 Chinese Quarterly of Mechanics
基金 安徽省教委自然科学基金(编号 J960131)
关键词 非均质土层 基桩 动力稳定性 轴向动力荷载 参数共振 dynamic stability axial dynamic load non-homogeneous soil parameters resonance
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