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| Research and Analysis of Engineering Characteristics of Rammer Carrier CFG Pile Composite Foundation |
| YANG Hong-mei1, WANG Sheng-jun2, LIU Hong-po3 |
| 1. China Railway Eryuan Engineering Group Co . Ltd, Chengdu, Sichuan 610031, China ; 2 Sichuan Provincial Highway Planning, Survey, Design and Research Institute, Chengdu, Sichuan 610041, China; 3. Department of Civil Engineering, Emei District, Southwest Jiaotong University, Emei, Sichuan 614202, China |
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Abstract Research purposes：Rammer carrier CFG pile composite foundation is increasingly used widely, but only a little theoretical research has been done on it. Combined with one engineering practice of rammer carrier CFG pile composite foundation, this paper researches the influencing regulation of the different loads, single pile carrying capability, cushion layer depth, pile length and space between piles on the bearing capacity and deformation of the foundation with the monitored date on rammer carrier CFG pile and FLAC software.
Research conclusions：From the research on the sensitivity of such new composite foundation to the all parameters, it is concluded the effective range of the negative friction of rammer carrier CFG pile is wider than the common CFG pile , and the neutral point is very low or zero. The effect of pile body of rammer carrier CFG pile is more obvious and the cushion of rammer carrier CFG pile composite foundation should be thicker than common CFG pile composite foundation.
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Received: 17 February 2009
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[ 1 ] 周景星, 王洪瑾, 等. 基础工程[M]. 北京:清华大学出版社, 1996 .
Zhou Jingxing, Wang Hongjin, et al. Foundation Engineering[M]. Beijing: Tsinghua University Press, 1996.
[ 2 ] 康景文. CFG桩复合地基的应用及其发展—西南软弱地基 CFG桩复合地基实践体会和应用展望(一) [J] . 四川建筑, 2001( 1): 39- 45 .
Kang Jingwen. Application and Development of CFG Piles Composite Foundation-Practice Experience and Application Prospect of Southwest Soft Foundation CFG Pile Composite Foundation(1)[J]. Sichuan Architecture, 2001, 21(1): 39- 45 .
[ 3] 康景文. CFG桩复合地基应用及其发展—西南软弱CFG桩复合地基实践体会和认识(二)[J]. 四川建筑,2001( 2): 45- 50.
Kang Jingwen. Application and Development of CFG Piles Composite Foundation-Practice Experience and Application Prospect of Southwest Soft Foundation CFG Pile Composite Foundation(2)[J]. Sichuan Architecture, 2001(2): 45- 50.
[ 4 ] 康景文, 赵翔. CFG 桩复合地基应用及其发展—西南地区CFG桩复合地基应用展望 (续完)[J] . 四川建筑,2001 (3): 49- 51.
Kang Jingwen. Application and Development of CFG Piles Composite Foundation-Practice Experience and Application Prospect of Southwest Soft Foundation CFG Pile Composite Foundation(End of continuous)[J]. Sichuan Architecture, 2001(3): 49- 51 .
[ 5 ] Emilios M.Comodromos, Christos T. Anagnostopoulos, Michael K. Georgiad is. Numerical Assessment of Axial Pile Group Response Based on Load Test[J]. Computers and Geotechnics, 2003(30): 89 -95.
[ 6 ] 阎明礼, 张东刚. CFG复合地基技术及工程实践 [M] . 北京: 中国水利水电出版社, 2001.
Yan Minli, Zhang Donggang. The Technology and Engineering Practice of CFG Composite Foundation[M]. Beijing: China Water Power Press, 2001 .
[ 7 ] Tasuoka, Influence of the Foundation Width On the Bearing Capacity Factor[J]. Soil and Foundations, 1989(3): 126- 130.
[ 8 ] 龚晓南. 土工计算机分析 [M ] . 北京: 中国建筑工业出版社, 2000 .
Gong Xiaonan. Analysis on Geotechnical Computer[M]. Beijing: China Architecture and Building Press, 2000.
[ 9 ] Itasca Consulting Group, Inc. FLAC3D: Fast Lagrangian Analysis of Continua in 3 Dimensions User Manual(version 2.1)[R]. Minneapolis: Itasca Consulting Group, Inc. , 1997.
[ 10 ] 黄熙龄, 秦宝玖, 等. 地基基础设计与计算 [M ] . 北京: 中国建筑工业出版社, 1981 .
Huang Xiling, Qin Baojiu, et al. Design and Computing Method of Foundation[M]. Beijing: Ch ina Architecture and Building Press, 1981 .
[ 11 ] 张泰安, 王军琪. CFG单桩及单桩复合地基承载力试验研究[J]. 铁道工程学报, 2009( 7): 21- 25.
Zhang Taian, Wang Junqi. Experimental Research on the Bearing Capacity of Single CFG[J]. Journal of Railway Engineering Soc iety, 2009(7): 21- 25.
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2010, Vol. 27 
