基于改进应变楔模型的固体-散体串联组合桩鼓胀变形及沉降分析

郭尤林; 赵明华; 彭文哲

doi:10.11779/CJGE201911022

基于改进应变楔模型的固体-散体串联组合桩鼓胀变形及沉降分析 English Version

1. 湖南大学岩土工程研究所,湖南长沙 410082;
2. 湖南城市学院土木工程学院,湖南益阳 413000

基金项目: 国家自然科学基金项目（51478178）; 湖南省教育厅科学研究项目一般项目（16C0304）

详细信息

作者简介:
郭尤林(1982— ),男,湖南益阳人,博士研究生,讲师,主要从事岩土工程方面的教学和研究工作。E-mail: guoyoulin0708@163.com。

通讯作者:
赵明华，E-mail：mhzhaohd@21cn.com

中图分类号: TU473
计量
- 文章访问数: 247
- HTML全文浏览量: 9
- PDF下载量: 117
出版历程
- 收稿日期: 2018-10-07
- 发布日期: 2019-11-24

Lateral bulgings and settlements of solid-bulk tandem compound piles based on modified strain wedge model

1. Geotechnical Engineering Institute, Hunan University, Changsha 410082, China;
2. College of Civil Engineering, Hunan City University, Yiyang 413000, China

摘要

摘要: 针对传统碎石桩易在桩顶1~3倍桩径的深度范围内发生鼓胀破坏的现象,首先,在现有工艺的基础上提出一种固体（混凝土）-散体（碎石散体材料）串联组合桩,并简要阐述其承载特性、施工工艺及破坏模式;其次,建立了串联组合桩鼓胀变形的计算模型,探讨串联组合桩的鼓胀变形机理;然后,对应变楔模型进行修正,并结合广义胡克定律,计算固体-散体串联组合桩的鼓胀变形值及桩身沉降值;最后,通过传统碎石桩及筋箍碎石桩鼓胀变形及沉降试验验证所提理论方法的合理性,结果表明：理论计算值与试验结果吻合较好,可为碎石桩复合地基设计提供一定的参考,具有理论及工程应用价值。
- 固体-散体串联组合桩 /
- 鼓胀变形 /
- 应变楔模型 /
- 广义胡克定律 /
- 沉降
Abstract: This paper is presented to respond to the phenomenon that swelling and failure are liable to appear within the top of the traditional gravel piles (within depth range of 1 to 3 times the pile diameter). Firstly, the solid (concrete)-bulk (gravel bulk material) tandem composite pile is proposed on the basis of the existing procedures, and the bearing mechanism, construction technology and failure mode of the tandem composite piles are introduced briefly. Secondly, a model for the bulging deformation of tandem composite piles is established to study the mechanism of the bulging deformation of tandem composite piles. Then, based on the modified strain wedge model and the generalized Hooke's law, the bulging deformations and settlements of the solid-bulk tandem composite piles are predicted. Finally, the proposed method is verified by the tests on the swelling deformations and settlements of the traditional gravel piles and reinforced-hoop-gravel piles. The comparative results show that the predicted values are in good agreement with the experimental ones, which indicates that the reference is thus provided, which is of theoretical and engineering application values for the design of the composite foundation of gravel piles.
- solid-bulk tandem compound pile /
- lateral bulging /
- strain wedge model /
- generalization Hooke law /
- settlement

HTML全文

参考文献(27)

[1]	赵明华, 俞晓. 土力学与基础工程[M]. 武汉: 武汉理工大学出版社, 2003. (ZHAO Ming-hua, YU Xiao.Soil mechanics and foundation engineering[M]. Wuhan: Wuhan University of Technology Press, 2003. (in Chinese))
[2]	龚晓南. 复合地基理论及工程应用[M]. 北京: 中国建筑工业出版社, 2007. (GONG Xiao-nan.Theories and application of composite foundation[M]. Beijing: China Architecture and Building Press, 2007. (in Chinese))
[3]	MURUGESAN S, RAJAGOPAL K.Studies on the behavior of single and group of geosynthetic encased stone columns[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2009, 136(1): 129-139.
[4]	周志刚, 张起森, 郑健龙. 土工格栅加固碎石桩复合地基的机理分析[J]. 土木工程学报, 1998, 31(1): 20-25. (ZHOU Zhi-gang, ZHANG Qi-sen, ZHENG Jian-long.Analysis of mechanics of improved ground with stone columns reinforced by geogrids[J]. China Civil Engineering Journal, 1998, 31(1): 20-25. (in Chinese))
[5]	GNIEL J, BOUAZZA A.Improvement of soft soils using geogrid encased stone columns[J]. Geotextiles and Geomembranes, 2009, 27(3): 167-175.
[6]	LO S R, ZHANG R, MAK J.Geosynthetic-encased stone columns in soft clay: a numerical study[J]. Geotextiles and Geomembranes, 2010, 28(3): 292-302.
[7]	CASTRO J, SAGASETA C.Deformation and consolidation around encased stone columns[J]. Geotextiles and Geomembranes, 2011, 29(3): 268-276.
[8]	陈昌富, 李其泽. 基于圆孔扩张理论顶部加箍碎石桩承载力计算[J]. 湖南大学学报(自然科学版), 2011, 38(10): 7-12. (CHEN Chang-fu, LI Qi-ze.Calculation of bearing capacity of geosynthetic-encased gravel pile based on expansion theory[J]. Journal of Hunan University (Natural Sciences), 2011, 38(10): 7-12. (in Chinese))
[9]	赵明华, 龙军, 张玲, 等. 不同型式复合地基试验对比分析[J]. 岩土工程学报, 2013, 35(4): 611-618. (ZHAO Ming-hua, LONG Jun, ZHANG Ling, et al.Comparative analysis of model tests on different types of composite foundations[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4): 611-618. (in Chinese))
[10]	赵明华, 何玮茜, 衡帅, 等. 基于圆孔扩张理论的筋箍碎石桩承载力计算方法研究[J]. 岩土工程学报, 2017, 39(10): 1785-1792. (ZHAO Ming-hua, HE Wei-xi, HENG Shuai, et al.Calculation method of geogrid-encased stone columns' bearing capacity based on cavity expansion theory[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1785-1792. (in Chinese))
[11]	赵明华, 顾美湘, 张玲, 等. 竖向土工加筋体对碎石桩承载变形影响的模型试验研究[J]. 岩土工程学报, 2014, 36(9): 1587-1593. (ZHAO Ming-hua, GU Mei-xiang, ZHANG Ling, et al.Model tests on influence of vertical geosynthetic-encasement on performance of stone columns[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1587-1593 .(in Chinese))
[12]	MURUGESAN S, RAJAGOPAL K.Geosynthetic-encased stone columns: numerical evaluation[J]. Geotextiles and Geomembranes, 2006, 24(6): 349-358.
[13]	KHABBAZIAN M, KALIAKIN V N, MEEHAN C L.Numerical study of the effect of geosynthetic encasement on the behaviour of granular columns[J]. Geosynthetics International, 2010, 17(3): 132-143.
[14]	陈建峰, 童振湄, 柳军修, 等. 竖向荷载下加筋碎石桩复合地基数值分析[J]. 岩土力学, 2013, 34(增刊2): 393-399. (CHEN Jian-feng, TONG Zhen-mei, LIU Jun-xiu, et al.Numerical analyses of composite foundation of geosynthetic-encased stone columns subjected to vertical loading[J]. Rock and Soil Mechanics, 2013, 34(S2): 393-399. (in Chinese))
[15]	章定文, 刘松玉. 路堤荷载下柔性桩复合地基沉降实用计算方法[J]. 岩土力学, 2007, 28(6): 1133-1138. (ZHANG Ding-wen, LIU Song-yu.Practical method for settlement calculation of flexible columns composite foundation under embankment[J]. Rock and Soil Mechanics, 2007, 28(6): 1133-1138. (in Chinese))
[16]	刘杰, 赵明华, 何杰. 碎石桩复合地基承载及变形性状研究[J]. 湖南大学学报(自然科学版), 2007, 34(5): 15-19. (LIU Jie, ZHAO Ming-hua, HE Jie.Research on bearing and deformation characters of composite foundation with granular columns[J]. Journal of Hunan University (Natural Sciences), 2007, 34(5): 15-19. (in Chinese))
[17]	曹文贵, 杨泽华. 柔性基础下碎石桩加筋复合地基沉降分析方法[J]. 岩土工程学报, 2012, 34(11): 1997-2004. (CAO Wen-gui, YANG Ze-hua.Method for analyzing settlement of reinforced-gravel-pile composite ground under flexible foundation[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(11): 1997-2004. (in Chinese))
[18]	NORRIS G M.Theoretically based BEF laterally loaded pile analysis[C]//Proceedings of the 3rd International Conference on Numerical Methods in Offshore Piling. Paris, 1986: 361-386.
[19]	ASHOUR M, NORRIS G, PILLING P.Lateral loading of a pile in layered soil using the strain wedge model[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124(4): 303-315.
[20]	ASHOUR M, PILLING P, NORRIS G.Lateral behavior of pile groups in layered soils[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2004, 130(6): 580-592.
[21]	李忠诚, 杨敏. 被动桩土压力计算的被动拱-主动楔模型[J]. 岩石力学与工程学报, 2006, 25(增刊2): 4241-4247. (LI Zhong-cheng, YANG Min.Passive arching-active wedge model of soil pressure calculation in passive piles[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(S2): 4241-4247. (in Chinese))
[22]	李忠诚, 梁志荣. 侧移土体成拱效应及被动桩计算模式分析[J]. 岩土工程学报, 2011, 33(增刊1): 113-118. (LI Zhong-cheng, LIANG Zhi-rong.Soil arching effect and calculation model for soil pressure of passive piles[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(S1): 113-118. (in Chinese))
[23]	ASHOUR M, ARDALAN H.Analysis of pile stabilized slopes based on soil-pile interaction[J]. Computers and Geotechnics, 2012, 39(10): 85-97.
[24]	XU L Y, CAI F, WANG G X, et al.Nonlinear analysis of laterally loaded single piles in sand using modified strain wedge model[J]. Computers and Geotechnics, 2013, 51(3): 60-71.
[25]	XU L Y, CAI F, XUE Y Y.Implementation of state-dependent plasticity model in strain wedge model for laterally loaded piles in sand[J]. Marine Georesources & Geotechnology, 2019, 37(5): 622-632.
[26]	杨晓峰, 张陈蓉, 黄茂松, 等. 砂土中桩土侧向相互作用的应变楔模型修正[J]. 岩土力学, 2016, 37(10): 2877-2884, 2892. (YANG Xiao-feng, ZHANG Chen-rong, HUANG Mao-song, et al.Modification of strain wedge method for lateral soil-pile[J]. Rock and Soil Mechanics, 2016, 37(10): 2877-2884, 2892. (in Chinese))
[27]	YANG X F, ZHANG C R, HUANG M S, et al.Lateral loading of a pile using strain wedge model and its application under scouring[J]. Marine Georesources & Geotechnology, 2018, 36(3): 340-350.

施引文献(13)

期刊类型引用(7)

1.	黄波林，殷跃平，李仁江，蒋树，秦臻，张鹏，闫国强. 滑坡涌浪综合防控工程措施研究进展与挑战. 工程地质学报. 2025(01): 159-170 . 百度学术
2.	刘红波，于磊，陈志华，陈再捷，庞富刚. 全钢集成式附着升降脚手架冲击性能研究. 施工技术(中英文). 2022(22): 72-79 . 百度学术
3.	王文沛，殷跃平，胡卸文，李滨，刘明学，祁小博. 碎屑流冲击下桩梁组合结构拦挡效果及受力特征研究. 地质力学学报. 2022(06): 1081-1089 . 百度学术
4.	范定坚，任曼妮. 约束空心混凝土柱抗侧向冲击动力性能. 辽宁工程技术大学学报(自然科学版). 2021(03): 214-219 . 百度学术
5.	陈伟，谢建斌，赵一锦，孙孝海，叶海涵，林煌超. 饱和沙土中高频液压振动沉桩敏感性因素分析. 哈尔滨商业大学学报(自然科学版). 2020(02): 214-218 . 百度学术
6.	王亚月. 钢砼叉桩动力响应模拟分析探究. 水利规划与设计. 2020(07): 102-108 . 百度学术
7.	任根立，王秀丽. 泥石流块石冲击下钢绞线网组合结构的动力响应模拟研究. 安全与环境工程. 2019(05): 85-93 . 百度学术