群桩基础沉降计算中的若干问题

秋仁东; 刘金砺; 高文生; 邱明兵

群桩基础沉降计算中的若干问题 English Version

中国建筑科学研究院地基基础研究所,北京 100013

详细信息

作者简介:
秋仁东 (1981 – ) ,辽宁人,博士,从事岩土工程方面的研究、设计咨询和开发工作。

中图分类号: TU473
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出版历程
- 收稿日期: 2011-08-08
- 发布日期: 2011-12-06

Some problems on settlement calculation of pile group foundation

Institute of Foundation Engineering, China Academy of Building Research, Beijing 100013, China

摘要

摘要: 桩基的沉降变形不仅受制于地基土性状,也受桩基与上部结构共同作用的影响,可以说是桩基计算中最为重要、最为复杂的课题之一。本文根据竖向荷载下群桩沉降性状试验的实测资料,厘清了群桩沉降的基本构成,探讨了群桩沉降计算中的几个关键问题,即土中竖向应力的求解、压缩层厚度的确定、长桩基础沉降计算中桩身压缩量应予以考虑,并给出了相应的解决思路。
- 桩基沉降 /
- 竖向应力 /
- 压缩层厚度 /
- 桩身压缩
Abstract: The settlement behaviors of pile group foundation have a close relationship to the ground strata and the interaction between foundation and superstructure. It is an important and complicated part in pile foundation calculation field. Based on a series of large scale mode tests on pile groups, the settlement behaviors of pile group foundation are revealed by the corresponding test data. Furthermore, some important problems to calculate the settlement of the pile group foundation are discussed , such as the calculation of the vertical stress, the compression layer thickness and the pile shaft compression for long piles. Finally , the solutions to these problem are presented.
- pile group foundation settlement /
- vertical stress /
- compression layer thickness /
- pile shaft compression

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参考文献(10)

[1]	刘金砺 , 高文生 , 邱明兵 . 建筑桩基技术规范应用手册 [M]. 北京 : 中国建筑工业出版社 , 2010. (LIU Jin-li, GAO Wen-sheng, QIU Ming-bing. Practical handbook of technical code for building pile foundation[M]. Beijing: China Architecture and Building Press, 2010. (in Chinese))
[2]	刘金砺 , 黄强 , 李华 , 等 . 竖向荷载下群桩变形形状及沉降计算 [J]. 岩土工程学报 , 1995, 17 (6): 1 – 13. (LIU Jin-li, HUANG Qiang, LI Hua, et al. Deformation behavior and settlement calculation of pile group under vertical load[J]. Chinese Journal of Geotechnical Engineering, 1995, 17 (6): 1 – 13. (in Chinese))
[3]	秋仁东 . 竖向荷载下桩身压缩和桩基沉降变形研究（博士学位论文） [D]. 北京 : 中国建筑科学研究院 , 2011. (QIU Ren-dong. Research on behavior of pile shaft compression and settlement deformation of pile group foundation under vertical load[D]. Beijing: China Academy of Building Research, 2011. (in Chinese))
[4]	JGJ 94 — 2008 建筑桩基技术规范 [S]. 北京 : 中国建筑工业出版社 , 2008. (JGJ 94 — 2008 Technical code for building pile foundation[S]. Beijing: China Architecture and Building Press, 2008. (in Chinese))
[5]	POULOS H G, DAVIS E H. Pile foundation analysis and design[M]. New York: Wiley, 1980.
[6]	GB 50007 — 2002 建筑地基基础设计规范 [S]. 北京 : 中国建筑工业出版社 , 2002. (GB 50007 — 2002 Code for design of building foundation[S]. Beijing: China Architecture and Building Press, 2002. (in Chinese))
[7]	JGJ 72 — 2004 高层建筑岩土工程勘察规程 [S]. 北京 : 中国建筑工业出版社 , 2004. (JGJ 72 — 2004 Specification for geotechnical investigation of tall buildings, 2004. (in Chinese))
[8]	DGJ 08 — 11 — 2010 地基基础设计规范 [S]. 上海 : 上海现代建筑设计 ( 集团 ) 有限公司 , 2010. (DGJ08 — 11 — 2010 Foundation design code[S]. Shanghai: Shanghai Xian Dai Architectural Design(Group)Co., Ltd, 2010. (in Chinese))
[9]	刘金砺 , 迟铃泉 . 桩土变形计算模型和变刚度调平设计 [J]. 岩土工程学报 , 2000, 22 (2): 151 – 157. (LIU Jin-li, CHI Ling-quan. The modified model of pile-soil deformation calculation and variable rigidity design method for balance settlement[J]. Chinese Journal of Geotechnical Engineering, 2000, 22 (2): 151 – 157. (in Chinese))
[10]	郭见扬 . 关于地基压缩沉降的起始阻力问题 [J]. 土工基础 , 2008, 22 (5): 76 – 80. (GUO Jian-yang. Initiative resistant force of compressed settlement of ground[J]. Soil Engineering and Foundation, 2008, 22 (5): 76 – 80. (in Chinese))

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群桩基础沉降计算中的若干问题 English Version

作者简介: 秋仁东 (1981 – ) ,辽宁人,博士,从事岩土工程方面的研究、设计咨询和开发工作。

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Some problems on settlement calculation of pile group foundation

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作者简介:
秋仁东 (1981 – ) ,辽宁人,博士,从事岩土工程方面的研究、设计咨询和开发工作。