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非饱和弹性半空间地基的稳态响应半解析 单元法研究
Semi-analytical analysis of steady-state response of foundations in unsaturated elastic half-space Unit method research
投稿时间:2021-04-13  修订日期:2021-06-24
DOI:
中文关键词:  非饱和土  半空间地基  简谐荷载  稳态响应  半解析加权残数法
英文关键词:Keywords: unsaturated soil  half-space foundation  simple harmonic load  steady-state response  semi-analytical weighted residual method
基金项目:
作者单位邮编
鲍楠 西安建筑科技大学理学院 710055
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中文摘要:
      应用半解析法研究简谐荷载下非饱和弹性半空间地基的稳态响应。基于非饱和土的动力控制方程以及非饱和弹性半空间的边界条件,建立地基层单元的半解析函数,应用加权残数法得到在简谐荷载下非饱和弹性半空间地基的稳态响应半解析方程。对半解析方程求解,得到了竖向简谐荷载作用下非饱和弹性地基水平位移和竖向位移幅值,数值分析了饱和度、地基深度等参数对于孔压、位移幅值的影响。研究结果表明应用本文方法研究非饱和弹性半空间地基的稳态响应是切实有效的。
英文摘要:
      Using semi-analytical method,this paper study steady-state response of unsaturated elastic half-space foundation under harmonic load. Based on the dynamic control equation of unsaturated soil and the boundary conditions of the unsaturated elastic half-space,the semi-analytical function of the foundation element is established. By the weighted residual method, this paper get the unsaturated semi analytical equation of the steady-state responses on elastic half space. The semi-analytical equations are solved to obtain the horizontal and vertical displacement amplitudes of the unsaturated elastic foundation under the vertical harmonic load. The effects of saturation and foundation depth on pore pressure and displacement were calculated numerically.The research results show that the application of this method to study the steady-state response of unsaturated elastic half-space foundations is practical and effective.
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