[1]郭力群.粉喷桩复合地基桩土应力比的原型测试分析[J].华侨大学学报(自然科学版),2004,25(2):161-164.[doi:10.3969/j.issn.1000-5013.2004.02.013]
　Guo Liqun.Analysing the Prototyping Measurements of Pile-Soil Stress Ratio on the Composite Ground with Dry-Cement Jet Mixing Piles[J].Journal of Huaqiao University(Natural Science),2004,25(2):161-164.[doi:10.3969/j.issn.1000-5013.2004.02.013]
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粉喷桩复合地基桩土应力比的原型测试分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第25卷
期数:
2004年第2期
页码:
161-164
栏目:
出版日期:
2004-04-20

文章信息/Info

Title:
Analysing the Prototyping Measurements of Pile-Soil Stress Ratio on the Composite Ground with Dry-Cement Jet Mixing Piles
文章编号:
1000-5013(2004)02-0161-04
作者:
郭力群
华侨大学木土工程系 福建泉州362011
Author(s):
Guo Liqun
Dept. of Civil Eng., Huaqiao Univ., 362011, Quanzhou, China
关键词:
粉喷桩;  复合地基;  桩土应力比;  原型测试
Keywords:
dry-cement jet mixing pile;  composite ground;  pile-soil stress ratio;  prototyping measuring
分类号:
TU473.16; TU431
DOI:
10.3969/j.issn.1000-5013.2004.02.013
文献标志码:
A
摘要:
通过对泉州市安吉路软基试验段实测,探讨粉喷桩复合地基的桩土应力比n和地基沉降的变化规律 .结果表明,n值随荷载增大而增大,但又随沉降增大而减小,而且工程实测的n值略显偏小 .导致n值较小的主要原因是,复合地基变形较大和上部桩间土为模量较大的填砂,桩、砂的变形模量接近 .鉴于前述原因,重要工程中利用实测桩土应力比计算复合地基沉降合理 .
Abstract:
In a test sector of soft ground on Anji Road of Quanzhou, the field measurements of pile-soil stress ratio and subsidence of foundations are performed on the composite ground with dry-cement jet mixing piles. The author inquires into the regular pattern of the change of n by way of these field measurements. As shown by the test, value n increases with the increase of load but it decreases with the increase of subsidence. The measured value n of this project is to the small side. The principal causes of a fairly small value n include: a fairly great deformation of foundation; the interpile soil on the upper part are sand filling with fairly great modulus; pile and sand have approximate modulus of deformation. In view of causes mentioned above, it is reasonable for the important projects to calculate subsidence of composite ground by using measured pile-soil stress ratio.

参考文献/References:

[1] 马时冬. 水泥搅拌桩复合地基桩土应力比测试研究 [J]. 土木工程学报, 2002(2):48-51.doi:10.3321/j.issn:1000-131X.2002.02.008.
[2] 秦建庆, 叶观宝. 水泥土桩复合地基桩土分担荷载的试验研究 [J]. 工程勘察, 2000(1):32-34.
[3] 叶观宝, 叶书麟. 水泥土搅拌桩加固软基的试验研究 [J]. 同济大学学报(自然科学版), 1995(3):270-274.
[4] 中国建筑科学研究院. JGJ 79-1991.建筑地基处理技术规范 [S]. 北京:中国计划出版社, 1992.22-25.
[5] 龚晓南. 复合地基 [M]. 杭州:浙江大学出版社, 1992.138-139.

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备注/Memo

备注/Memo:
福建省自然科学基金资助项目(D020014)
更新日期/Last Update: 2014-03-23