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Harmonic response of a rigid wall retaining poroelastic soil by direct approach

机译：刚性壁在多孔弹性土中的谐响应

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摘要

The problem of the determination of the dynamic pressures and the associated forces on a rigid, vertical cantilever wall retaining a semi-infinite, uniform, fully-saturated poroelastic layer of soil is solved analytically under conditions of plane strain. Hysteretic damping in the soil skeleton may also be present. The rigid wall and the base of the soil layer are both excited by an acceleration harmonically varying with time and spatially invariant. The governing partial differential equations of motion, after separation of variables and the simplifying assumption of zero vertical normal stresses, reduce to a system of two ordinary differential equations for the amplitudes of the horizontal solid skeleton displacement and the pore water pressure, which are easily solved. Soil displacements and stresses, wall pressures and resultant forces as well as the pore water pressure are explicitly expressed. Their variation with frequency, hysteretic damping, porosity and permeability is numerically computed in order to assess the relative importance of the various parameters on the response.
机译：在平面应变条件下，解析地解决了在固定有半无限，均匀，完全饱和的土壤多孔弹性层的刚性垂直悬臂壁上确定动压力和相关力的问题。土壤骨架中也可能存在滞后阻尼。刚性壁和土壤层的基础都受到加速度的激励，该加速度随时间谐波变化并且在空间上不变。在分离变量和简化了零垂直法向应力的假设之后，支配的运动偏微分方程简化为一个由两个常微分方程组成的系统，用于水平固体骨架位移和孔隙水压力的振幅，这些问题很容易解决。 。明确表示了土壤位移和应力，壁压力和合力以及孔隙水压力。为了评估各种参数对响应的相对重要性，通过数值计算了它们随频率，磁滞阻尼，孔隙率和渗透率的变化。

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  • 来源
    《》|2001年|p.527-538|共12页
  • 会议地点 Malaga(ES);Malaga(ES)
  • 作者

    D.D. Theodorakopoulos; A.P. Chassiakos; D.E. Beskos;

  • 作者单位

    Department of Civil Engineering, University of Patras, Greece;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 Tu;
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