摘要
结合夯锤的刚体运动方程和成层弹性地基空间轴对称动力问题的传递矩阵法，导出了强穷的接触应力沿锤底的应力分布在变换域中的解析式，通过Ｌａｐｌａｃｅ－Ｈａｎｋｅｌ联合反交换求得了接触应力分布及沉降的时域解，确定了接触应力时间，并将数值结果与现场测试规律作了比较，结果表明：本文方法较好地解决了夯锤冲击成层地基的接触应力分布特征，为确定强夯的表面接触应力提供了帮助．
in this paper, the solutions of surface contact stress distribution for multi-layeredfoundation in transform domain are presented by combining the hammer rigid kinetic equationand transform matrix method of three-dimensional axisymmetric elastodynamic problem for multilayered foundation during dynamic consolidation. The contact stress-time and settlement-timerelations are obtained, in which the Laplace-Hankel mixed inversion transforms are employed. Thecontact time is also determined. Moreover, the reliability of the proposed method is proved bycomparing calcauted value and experimental data. The results show that the presented method canrefect the surface contact stress distribution properties and provide an useful method for obtainingthe surface contact stress during dynamic consolidation.
出处
《力学学报》
EI
CSCD
北大核心
1999年第2期250-256,共7页
Chinese Journal of Theoretical and Applied Mechanics
基金
国家自然科学基金!59479013
关键词
强夯法
表面接触应力
成层地基
应力分布
地基
dynamic consolidation, surface contact stress, multi-layered foundation, axisymmetric problem, transfer matrix method, Laplace-Hankel mixed transforms
