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非半无限空间均布荷载下地基附加应力的理论计算研究

Study on Theoretical Calculation of Superimposed Stress of Non Semi-infinite Foundation on Distributed Load

中文摘要英文摘要

实际工程应用中很少有半无限空间体存在,而目前地基附加应力的计算方法,几乎都是将地基土体视为弹性半无限体。而且实际工程活动中,荷载很少以集中力的形式作用在土体上,往往都是通过基础分布于一定的面积上。因此,本文在布辛内斯克公式和叠加方法计算半无限空间土体均布荷载下地基附加应力的基础上,通过镜像法原则,得出非半无限空间均布荷载下地基附加应力解的公式。根据计算结果与半无限空间条件进行对比,发现非半无限空间均布荷载下地基附加应力的解比半无限空间的解更加均匀且应力集中程度降低,更符合实际工程的情况。

here are very few practical applications of semi-infinite foundation. Almost all the current methods of calculating foundation superimposed stress actually consider the foundation as an elastic semi-infinite space. In the actual constructions, the load is seldom applied to the foundation in concentrated form, while it is usually distributed to a certain area. This paper provides the formula of superimposed stress of non semi-infinite foundation on distributed load by the image method, based on the J. Boussinesq formula of superimposed stress of semi-infinite foundation on concentrated load. Comparing with the formula of superimposed stress of semi-infinite foundation on superimposed stress, we found that the formula of superimposed stress of non semi-infinite foundation on distributed load is more suitable for the situation of realistic projects.

于广云、贾勇、张径伟、朱旦育

工程基础科学

土力学非半无限空间均布荷载附加应力镜像法数值分析

Soil MechanicsNon Semi-infinite foundationDistributed LoadSuperimposed Stressthe Image MethodNumerical Analysis

于广云,贾勇,张径伟,朱旦育.非半无限空间均布荷载下地基附加应力的理论计算研究[EB/OL].(2010-09-01)[2025-05-17].http://www.paper.edu.cn/releasepaper/content/201009-13.点此复制

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