关于长桩超长桩桩基沉降计算问题

刘金砺; 秋仁东; 高文生; 邱明兵

关于长桩超长桩桩基沉降计算问题 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:
刘金砺 (1933 – ) ,湖南人,研究员,博士生导师,从事岩土工程方面的研究和开发工作。

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

Settlement calculation of foundation with long and super-long piles

Institute of Foundation Engineering, China Academy of Building Research Beijing 10013 China

摘要

摘要: 随着高层超高层建筑的兴建快速发展,长桩超长桩桩基的使用随之增多,设计中长桩、超长桩桩基的沉降计算成为一个新的关注焦点。本文首先对既有主要沉降计算方法进行了浅析,通过工程案例采用既有方法进行了沉降计算比较,其中包括我们正在研究的 Mindlin 解均化应力系数法。通过计算过程中附加应力、压缩层厚度、沉降计算结果的合理性、可靠性的分析比较,提出了优化计算方法的意见。
- 长桩 /
- 超长桩 /
- 沉降计算 /
- Mindlin 解均化应力法
Abstract: The high-rise and super high-rise buildings get a chance to be constructed rapidly with the development of economy and society in China. As the popular application cases of foundation with long and super-long piles in the buildings, the study on settlement calculation for these types of pile foundations has become a focus problem in the design of buildings. The authors analyze the merits and faults of the present settlement calculation methods for the foundation with long and super-long piles and compare the calculated results on the basis of engineering cases by means of these settlement estimation methods. Meanwhile, the Mindlin mean stress settlement calculation method is introduced. Based on the comprehensive comparison and analysis of these results, furthermore, especially considering the influences of additional stress, compression layer thickness and rationality and reliability of the methods on the settlement calculation, some suggestions are put forward to optimize the settlement calculation for the foundation with long and super-long piles.
- long pile /
- super-long pile /
- settlement calculation /
- Mindlin mean stress method

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参考文献(7)

[1]	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))
[2]	JGJ 94 — 1994 建筑桩基技术规范 [S]. 北京 : 中国建筑工业出版社 , 2008. (JGJ 94 — 1994 Technical code for building pile foundation[S]. Beijing: China Architecture and Building Press, 1994. (in Chinese) )
[3]	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))
[4]	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))
[5]	刘金砺 , 邱明兵 . 单桩、单排桩、疏桩基础及其复合桩基的沉降计算 [J]. 土木工程学报 , 2007( 增刊 ): 152 – 158. (LIU Jin-li, QIU Ming-bing. Settlement calculation for pile foundation and composite piled foundation with single pile and sparse piles[J]. China Civil Engineering Journal, 2007(S1): 152 – 158. (in Chinese))
[6]	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))
[7]	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))