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筋箍长度及刚度对加筋碎石桩复合地基承载力影响分析

夏博洋, 郑刚, 周海祚, 杨新煜, 于晓旋, 赵佳鹏

夏博洋, 郑刚, 周海祚, 杨新煜, 于晓旋, 赵佳鹏. 筋箍长度及刚度对加筋碎石桩复合地基承载力影响分析[J]. 岩土工程学报, 2019, 41(S2): 209-212. DOI: 10.11779/CJGE2019S2053
引用本文: 夏博洋, 郑刚, 周海祚, 杨新煜, 于晓旋, 赵佳鹏. 筋箍长度及刚度对加筋碎石桩复合地基承载力影响分析[J]. 岩土工程学报, 2019, 41(S2): 209-212. DOI: 10.11779/CJGE2019S2053
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XIA Bo-yang, ZHENG Gang, ZHOU Hai-zuo, YANG Xin-yu, YU Xiao-xuan, ZHAO Jia-peng. Influences of length and strength of geosynthetics on bearing capacity of composite foundation with stone columns[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 209-212. DOI: 10.11779/CJGE2019S2053
Citation: XIA Bo-yang, ZHENG Gang, ZHOU Hai-zuo, YANG Xin-yu, YU Xiao-xuan, ZHAO Jia-peng. Influences of length and strength of geosynthetics on bearing capacity of composite foundation with stone columns[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 209-212. DOI: 10.11779/CJGE2019S2053
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筋箍长度及刚度对加筋碎石桩复合地基承载力影响分析  English Version

  • 1. 滨海土木工程结构与安全教育部重点实验室(天津大学),天津 300072;
    2. 天津大学建筑工程学院,天津 300072

基金项目: 国家重点研发计划项目（2017YFC0805407）; 国家自然科学基金项目（41630641,51708405）; 天津市科技计划项目（16YDLJSF00040）
详细信息
    作者简介:

    夏博洋(1993— ),男,博士研究生,主要从事地下结构,地基处理科研工作。E-mail: 13752021818@163.com。

Influences of length and strength of geosynthetics on bearing capacity of composite foundation with stone columns

  • 1. Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China;
    2. School of Civil Engineering, Tianjin University, Tianjin 300072, China

摘要

    摘要
  • 摘要: 针对加筋碎石桩复合地基中桩体性能,通过有限元数值模拟与模型试验对比分析,验证了数值模型的可靠性,进而变换加筋长度,研究分析了复合基础下端承加筋单桩与群桩的极限承载能力和破坏模式。研究结果表明：筋材强度较低时,加筋长度不会对桩体破坏模式产生影响,对极限承载能力提高有限;随着筋材强度不断提高,碎石桩在加筋体以下区域发生剪切破坏,并且随着加筋长度的增加向更深土层发展,基础的极限承载能力线性增长。加筋长度对群桩复合地基不同位置处桩体的破坏模式影响不同。相较于边桩,中心桩在桩身较深位置处发生剪切破坏,筋材需达到较深的长度才发挥约束效果。
    Abstract: The performance of geosynthetic-encased stone columns in composite foundation is investigated through the finite element numerical simulation that is verified by the published experimental results from model tests, and then the effects of length of geosynthetics on the failure modes and the ultimate bearing capacities of single column and group columns are analyzed. The research results show when the stiffness of the geosynthetics is low, the length of the geosynthetics will not affect the shear failure modes, and the improvement of the ultimate bearing capacity is limited. With the increase of the stiffness of the geosynthetics, the shear failure of the stone column occurs in the area below the geosynthetics-encased body, and the ultimate bearing capacity of the foundation increases linearly with the increase of the length of the geosynthetics to the deeper soil layer. The effects of the length of the geosynthetics on the failure modes of stone column at different positions of composite foundation with pile groups are different. Compared with the side columns, the center columns have shear failure at the deeper position of the stone body, and the geosynthetics needs to reach a deeper length to exert the restraint effects.
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    • 参考文献(9)
  • [1] 郑刚, 龚晓南, 谢永利, 等. 地基处理技术发展综述[J].土木工程学报, 2012, 45(2): 127-146.
    (ZHENG Gang, GONG Xiao-nan, XIE Yong-li, et al.State-of-the-art techniques for ground improvement in China[J]. China Civil Engineering Journal, 2012, 45(2): 127-146. (in Chinese))
    [2] IMPE V W F. Soil improvement techniques and their exolution[J]. Animal Science Papers & Reports, 1989, 20(1): 169-178.
    [3] RAJAGOPAL K, KRISHNASWAMY N R, LATHA G M.Behaviour of sand confined with single and multiple geocells[J]. Geotextiles & Geomembranes, 1999, 17(3): 171-184.
    [4] RAJAGOPAL K, MURUGESAN S.Geosynthetic-encased stone columns: numerical evaluation[J]. Geotextiles & Geomembranes, 2006, 24(6): 349-358.
    [5] GHAZAVI M, AFSHAR J N.Bearing capacity of geosynthetic encased stone columns[J]. Geotextiles & Geomembranes, 2013, 38: 26-36.
    [6] MUZAMMIL S P, VARGHESE R M, JOSEPH J.Numerical simulation of the response of geosynthetic encased stone columns under oil storage tank[J]. International Journal of Geosynthetics & Ground Engineering, 2018, 4(1): 4.
    [7] MITCHELL J K, HUBER T R.Performance of a stone column foundation[J]. Journal of Geotechnical Engineering, 1985, 111(2): 205-223.
    [8] 郑刚, 周海祚, 刁钰, 等. 饱和黏性土中散体桩复合地基极限承载力系数研究[J]. 岩土工程学报, 2015, 37(3): 385-399.
    (ZHENG Gang, ZHOU Hai-zuo, DIAO Yu, et al.Study on the ultimate bearing capacity coefficient of the composite foundation in the saturated viscous soil[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(3): 385-399. (in Chinese))
    [9] 吕福庆, 吴文. 桩的垂直静载试验极限承载力判定方法综述[J]. 岩土力学, 1995, 16(4): 85-93.
    (LÜ Fu-qing, WU Wen.A general introduction on determining the limit bearing capacity in static-load experiment for piles length of pile-top descent[J]. Rock and Soil Mechanics, 1995, 16(4): 85-93. (in Chinese))
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出版历程
  • 收稿日期:  2019-04-29
  • 发布日期:  2019-07-19

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