文档介绍：湘潭大学
硕士学位论文
水泥土桩复合地基沉降计算的渐近均匀化方法
姓名:戴文峰
申请学位级别:硕士
专业:结构工程
指导教师:马石城
20080525
摘要
复合地基已经广泛应用于多种地质条件下的各种建筑工程中,并取
得了巨大的经济效益和社会效益。但是,到目前为止,其相关的计算理
论和设计方法还不严谨,复合地基沉降计算理论远远落后于工程实践,
制约了复合地基在实际工程中的应用和发展。
考虑到复合地基研究现状,本文完成的主要工作如下:⑴在砖箱中
制作了水泥土桩复合地基模型,并且完成了水泥土、基土的各种相关土
工试验;⑵通过平板载荷试验,量测了水泥土桩复合地基的承载力和沉
降变形值;⑶以该复合地基为原型,提出了用于计算复合地基沉降的渐
近均匀化方法,并用 C++语言编写了均匀化方法沉降计算的有限元程序;
⑷采用分层总和法,利用均匀化方法有限元程序,求得了复合地基在荷
载作用下的沉降量;⑸采用本文提出的渐近均匀化方法,对工程实例进
行了沉降计算。
关于水泥土桩复合地基的复合模量值,采用渐近均匀化方法的计算
值与载荷试验的实测值仅相差 %。为解决复合地基的应力场问题,引
入了沉降修正系数,采用分层总和法的沉降计算值与实测值符合较好。
通过对工程实例的验算,表明渐近均匀化方法用于水泥土桩复合地基沉
降计算是有效的。

关键词:复合地基;均匀化理论;程序计算;静载试验;沉降。

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湘潭大学硕士学位论文
Abstract
In recent years, composite foundation has been widely used in all kinds
of soils on which buildings with different structural styles were founded.
And tremendous economic and social benefits have been received. But till
now, its related calculational theory and design method are still imprecise.
The current settlement theory posite foundation lags far behind the
engineering practice, and restricts posite foundation in practical
engineering applications and development.
Considering the research status quo of posite foundation, this
pleted the major work as follows: Firstly, the author produced a
composite foundation reinforced by soil-cement columns, additionally
completed the soil test of the soil-cement and the soil in the brick trunk;
Secondly, the author measured the bearing capacity and the deformation of
the settlement of posite foundation through the plate loading test;
Thirdly, this paper puts forward the asymptotic homogenization method of
the settlement calculation of posite foundation, piles the C
programming language of its finite element analysis; Fourthly, the author
calculated the settlement quantity of posite foundation using
layerwise summation method; Finally, using the asymptotic homogenization
method proposed in this paper, the author calculated the settle