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强夯作用下成层地基的表面接触应力分布特征
引用本文:孔令伟,袁建新.强夯作用下成层地基的表面接触应力分布特征[J].力学学报,1999,31(2):250-256.
作者姓名:孔令伟  袁建新
作者单位:中国科学院武汉岩土力学研究所基础室
基金项目:国家自然科学基金!59479013
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.

关 键 词:强夯法  表面接触应力  成层地基  应力分布  地基

STUDY ON SURFACE CONTACT STRESS DISTRIBUTION PROPERTIES FOR MULTI-LAYERED FOUNDATION DURING DYNAMIC CONSOLIDATION
Kong Lingwei, Yuan Jiajnxin.STUDY ON SURFACE CONTACT STRESS DISTRIBUTION PROPERTIES FOR MULTI-LAYERED FOUNDATION DURING DYNAMIC CONSOLIDATION[J].chinese journal of theoretical and applied mechanics,1999,31(2):250-256.
Authors:Kong Lingwei  Yuan Jiajnxin
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 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.
Keywords:dynamic consolidation  surface contact stress  multi-layered foundation  axisymmetric problem  transfer matrix method  Laplace-Hankel mixed transforms
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