楔形桩的变形研究

^论文编号:TM147  ^论文字数:16405,页数:44

摘要
    本文在前人对楔形桩的试验研究及理论研究的基础上，对其工作性状及其在各类土层中的工作性能展开了若干研究，主要包括沉降的理论分析、楔形桩在各类土层中的试验结果分析和楔形桩的应用实例分析等，对于国家和地方规范对建筑物变形允许值的有关规定也有介绍。
 通过收集的历年来前人对楔形桩的试验结果和工程应用实例，对楔形桩的研究和应用情况进行了较为系统的总结和分析，尤其对楔形桩的变形进行了较为深入的分析对比，从而通过研究分析得出楔形桩是一种优越的桩型,相同体积的情况下比普通桩有更大的承载性能和更好的抗沉降性能，且在相同的工程地质条件下更为经济，值得推广应用。
 
关键词：楔形桩；工作性状；沉降研究；变形屈曲；工程实例；性能优越性。

Abstract
     Base on the predecessors' research on the tapered piles, this article carried out a number of studies about the performance and the behavior of the the tapered piles. It is the theoretical analysis of settlement、the analysis of test results and the analysis of the applications constituted the main idea of this article. In addition,the national and local Code about the deformation of buildings were also introduced in this article.
     Through the collection of the predecessors' research on the tapered piles and the examples of Applications, the summary and analysis of the current situation of tapered piles' research and application were systematically and successfully done within this article. Especially, the depth comparative analysis of the tapered piles' deformation was done within this paper. Through research and analysis, understand that this kind of pile have a better Bearing Capacity and Anti-settlement properties than the common piles in the situation of equal volume and equal Engineering Geological Conditions. And we can get the construction done more economically by using tapered piles. So, at last, we can say that the application of the tapered piles should be promoted.

Keywords : tapered pile; service performance; settlement; deformation; the superiority of performance.

目  录
第一章 绪论 .....1
1.1 引言.....1
1.2 桩的类型.2
   1.2.1 按照承载性状分类.....2
    1.2.2 按桩的使用功能分类...2
    1.2.3 按桩材分类.....3
    1.2.4 按成桩方法分类.3
    1.2.5 按桩的几何特性分类...4
1.3 桩型的选择.....4
1.4 楔形桩的主要特征.....7
1.5 楔形桩国内外研究现状.8
1.6 本文研究的主要问题...9
第二章 楔形桩的变形研究 ...10
2.1 楔形桩的沉降..10
    2.1.1楔形桩的沉降计算.....10
    2.1.2楔形桩的沉降特点....11
2.2 国家和地方规范对建筑物变形允许值的规定14
    2.2.1《建筑地基基础设计规范》(GB50007—2002)14
    2.2.2 浙江省标准《地基基础设计规范》(ＤＢ33/1001-2003)..16
2.3 楔形桩的变形屈曲....17
第三章 楔形桩的试验成果与国内外部分工程应用....24
3.1 楔形刚性桩复合地基在工程中的应用24
3.2 楔形桩在天津地区的试验研究25
3.3 楔形桩对土体冻胀性和融沉性的改良作用..27
3.4 楔形桩在杂填土、粉土、粉细砂中的试验28
3.5 楔形桩在粘土中的试验....29
3.6 粉质粘土中的现场试验....30
3.7 楔形桩国外的试验..32
3.8 以上各种试验结果分析....33
3.9 楔形桩的应用情况介绍....34
第四章 我国楔形桩复合地基础的应用前景 ..36
第五章 结论与展望..37
5.1 结论..37
5.2 展望..37
参考文献..39
致谢41

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