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强夯作用下成层地基的表面接触应力分布特征

STUDY ON SURFACE CONTACT STRESS DISTRIBUTION PROPERTIES FOR MULTI-LAYERED FOUNDATION DURING DYNAMIC CONSOLIDATION

  • 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.

     

    Abstract: 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 reliabil...

     

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