端承桩复合桩基及其设计方法

宰金珉; 周峰; 梅国雄; 王旭东; 裴捷; 廖河山

doi:10.13204/j.gyjz200801015

端承桩复合桩基及其设计方法

doi: 10.13204/j.gyjz200801015

1.
1. 南京工业大学土木工程学院,南京 210009;
2.
2. 上海魏琏工程结构设计事务所,上海 200010;
3.
3. 厦门市建委科技处,厦门 316004

基金项目:

国家自然科学基金资助项目(50678083);国家青年自然科学基金资助项目(50608038);江苏省六大人才高峰资助项目;南京工业大学博士论文创新基金资助项目(BSCX200614)

详细信息

作者简介:
宰金珉,男,1945年12月出生,教授博士生,导师.E-mail:zjm@njut..Edu.cn

计量
- 文章访问数: 80
- HTML全文浏览量: 4
- PDF下载量: 64
- 被引次数: 0
出版历程
- 收稿日期: 2007-06-27
- 刊出日期: 2008-01-20

END-BEARING COMPOSITE PILE FOUNDATION AND ITS DESIGN METHOD

1.
1. College of Civil Engineering,Nanjing University of Technology,Nanjing 210009;
2.
2. Shanghai Weilian Structure Design Office,Shanghai 200010;
3.
3. Section of Science and Technology,Xiamen Construction Committee,Xiamen 316004

摘要

摘要: 对于采用端承桩(或摩擦端承桩)的桩基础,由于基桩沉降很小,即使加大桩距也很难发挥桩间土的承载作用,因此上部结构荷载几乎全部由桩来承担,桩间土即便有很大的承载力也无法参与工作,从而造成很大的浪费。通过采用专门研制的桩顶变形调节装置,来协调端承桩与桩间土之间的变形,从而实现端承桩与桩间土的共同作用;并对使用端承桩同时考虑地基土承载力,特别是以地基土承载为主,辅以少量端承桩的端承桩复合桩基,提出设计方法。该方法经工程实践验证是合理的,具有良好的应用前景。
- 复合桩基 /
- 端承桩 /
- 桩土变形 /
- 变形调节器
Abstract: Because of small settlement of end-bearing pile, the bearing capacity of soils among piles can not be carried out, even if the space between piles increased. Consequently, all loads of the super-structure should be supported by piles only. The bearing capacity of soils could not be used, and huge waste caused. A kind of tailored-made equipment named deformation adjustor is studied, which are used to adjust the deformation between the end-bearing pile and the soil among piles. The design method of end-bearing composite pile foundation is presented, in which the end-bearing piles and the soil foundation are working together, especially, the soil plays a main role. The design method has been shown to be reliable.
- composite pile foundation /
- end-bearing pile /
- deformation of pile and soil /
- deformation adjustor

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参考文献(6)

RandolphM F. Science and Empiricism in Pile Foundation.Geot echnique,2003, 53(10) : 847-875

[2] 宰金珉. 复合桩基理论与应用. 北京: 知识产权出版社, 2004

[3] Mandolini A, Russo G, Viggiani C. Pile Foundation: Experimental Invest igations, Analysis and DesignPPProc. 16th Int. Conf. Soil Mechs.Geot. Eng., Osaka: 2005(1) : 177-213

[4] 宰金珉. 塑性支承桩-卸荷减沉桩的概念及其工程应用. 岩土工程学报, 2001, 23(3) : 273-278

[5] 陆培炎, 徐振华. 地基的强度和变形的计算. 西宁: 青海人民出版社, 1979: 1-3

[6] 宰金珉, 杨嵘昌. 复合桩基承台下土的极限承载力提高值理论解. 岩土工程学报, 1997, 19(4) : 39-48

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