[1]杜广印,李海涛,刘松玉,等.粉喷桩施工过程对桩周土影响机理分析[J].东南大学学报(自然科学版),2010,40(4):835-839.[doi:10.3969/j.issn.1001-0505.2010.04.032]
 Du Guangyin,Li Haitao,Liu Songyu,et al.Analysis of effect mechanism on soils between piles in dry jet mixing construction[J].Journal of Southeast University (Natural Science Edition),2010,40(4):835-839.[doi:10.3969/j.issn.1001-0505.2010.04.032]
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粉喷桩施工过程对桩周土影响机理分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第4期
页码:
835-839
栏目:
土木工程
出版日期:
2010-07-20

文章信息/Info

Title:
Analysis of effect mechanism on soils between piles in dry jet mixing construction
作者:
杜广印13 李海涛2 刘松玉3 吴燕开3
1 成都理工大学环境与土木工程学院,成都 610059; 2 江苏省交通工程建设局,南京 210069; 3 东南大学岩土工程研究所,南京 210096
Author(s):
Du Guangyin13 Li Haitao2 Liu Songyu3 Wu Yankai3
1 College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China
2 Transportation Engineering Construction Bureau of Jiangsu Province, Nanjing 210069, China
3 Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
关键词:
粉喷桩 超静孔隙水压力 圆柱扩张 喷粉压力 桩周土
Keywords:
dry jet mixing column excess pore pressure cylinder expansion jet pressure surrounding soils between piles
分类号:
TU472.13
DOI:
10.3969/j.issn.1001-0505.2010.04.032
摘要:
通过对现有粉喷桩施工过程喷粉压力的分析,提出了粉喷桩施工过程喷粉压力对桩周土体作用的分析模型,该模型可以考虑施工过程桩周土体中超静孔隙水压力随深度变化.分析了粉喷桩施工过程的桩周土体超静孔隙水压力产生与消散规律.利用平面圆柱扩张理论分析某一深度处超静孔隙水压力,求解出粉喷桩施工对桩周土体产生塑性区半径大小的解析式.由理论计算结果与实测结果表明,桩边附近的超静孔隙水压力的理论值与实测值较为吻合,而由于假设条件与实际情况存在着一定的差异,导致理论计算结果的塑性区半径偏大.但由理论计算表明,理论公式能较好反映粉喷桩施工对桩周土体的影响规律.
Abstract:
A model to analyze the effect of jet pressure on surrounding soils between piles during the dry jet mixing(DJM)column construction is presented in the paper. It takes into account the change of excess pore pressure with the depth. The excess pore pressure and its dissipation distribution in the surrounding soils between piles are analyzed during the DJM construction. By using planar cylinder expansion theory the excess pore pressure at given depth is analyzed and the equation for radius of plastic area in surrounding soils is derived. Theoretical calculation results and test results show that in soil chose to the piles the excess pore pressure from both calculation and test are similar. However, due to the difference between presumption and practical condition the plastic area radius from calculation is a little bigger.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 杜广印(1964—),男,博士生, 副教授; 刘松玉(联系人),男,博士,教授,博士生导师,liusy@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(40702047).
引文格式: 杜广印,李海涛,刘松玉,等.粉喷桩施工过程对桩周土影响机理分析[J].东南大学学报:自然科学版,2010,40(4):835-839. [doi:10.3969/j.issn.1001-0505.2010.04.032]
更新日期/Last Update: 2010-07-20