[1]曾友金,章为民.深厚覆盖土层中桩的有效桩长[J].东南大学学报(自然科学版),2002,32(5):823-828.[doi:10.3969/j.issn.1001-0505.2002.05.031]
 Zeng Youjin,Zhang Weimin.Effective length of foundation pile in the soil layers of deep overlay[J].Journal of Southeast University (Natural Science Edition),2002,32(5):823-828.[doi:10.3969/j.issn.1001-0505.2002.05.031]
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深厚覆盖土层中桩的有效桩长()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第5期
页码:
823-828
栏目:
土木工程
出版日期:
2002-09-20

文章信息/Info

Title:
Effective length of foundation pile in the soil layers of deep overlay
作者:
曾友金 章为民
南京水利科学研究院土工研究所,南京 210024
Author(s):
Zeng Youjin Zhang Weimin
Department of Geotechnical Engineering, Nanjing Hydraulic Research Institute,Nanjing 210024, China
关键词:
有效桩长 极限承载力 荷载传递函数 弹性理论法
Keywords:
effective length ultimate bearing capacity load-transfer function elastic theory method
分类号:
TU473
DOI:
10.3969/j.issn.1001-0505.2002.05.031
摘要:
采用线弹塑性荷载传递函数,按极限承载力控制法确定深厚覆盖土层中桩的有效桩长.分析了桩的刚度系数、桩端土持力层弹性模量与桩周土弹性模量之比值、桩侧极限位移、桩顶沉降量、桩径和土的泊桑比等因素对桩有效桩长的影响.其结果表明:除土的泊桑比和桩端土持力层弹性模量与桩周土弹性模量比值对桩有效桩长的影响不明显外,其余因素均有一定或较大的影响, 且与弹性理论法分析结论一致.为了将理论分析应用到工程实际中,对各参数在工程桩中的取值进行了分析.
Abstract:
According to the control method of the ultimate bearing capacity,effective length of a pile in the soil layers of deep overlay is analyzed and calculated with linear elastic-plastic load transfer function. Influential factors of effective length such as coefficient of pile rigidity, elastic modulus ratio of the bottom soil and surrounding soil, side ultimate displacement, pile’s diameter and Poisson ratio of soil are thoroughly analyzed. The results show that the factors have certain effects on the effective length except Poisson ratio of soil and elastic modulus ratio of the bottom soil and surrounding soil. These results agree with analytic conclusions of the elastic theory method. In order to apply in practical project, the determination of relevant parameters is discussed.

参考文献/References:

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  Luo Weide.Mechanical analysis of single pile and theory deduction of the curve of load-settlement [J].Chinese Journal of Geotechnical Engineering,1990,12(1):35-44.(in Chinese)
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  Pan Shisheng,Hou Xueyuan.Computation of pile head stiffness [J].Chinese Journal of Geotechnical Engineering,1996,18(1):1-6.(in Chinese)
[5] 曾友金,章为民.按桩顶沉降控制法确定普通桩有效桩长[J].工程勘察,2002,32(6).(待发表)
  Zeng Youjin,Zhang Weiming.Confirm effective length of common pile with the control method of settlement of top pile[J].Geotechnical Investigation & Surveying,2002,32(6).(to appear)(in Chinese)
[6] 桩基工程手册编写委员会.桩基工程手册[M].北京:中国建筑工业出版社,1995.144-156.
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备注/Memo

备注/Memo:
作者简介: 曾友金(1976—),男,硕士,yjzeng@njhri.edu.cn; 章为民(联系人),男,教授级高工,硕士生导师,wmzhang@njhri.edu.cn.
更新日期/Last Update: 2002-09-20