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Volume 42 Issue S1
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JIANG Ji-wei, WANG Xiao-hua, RAO Xi-bao, DING Gao-jun, ZHANG Xue-yang, HUANG Shuai. Experimental study on difference of shear strength between gravel materials and actual vibroflotation piles[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S1): 156-160. DOI: 10.11779/CJGE2020S1031
Citation: JIANG Ji-wei, WANG Xiao-hua, RAO Xi-bao, DING Gao-jun, ZHANG Xue-yang, HUANG Shuai. Experimental study on difference of shear strength between gravel materials and actual vibroflotation piles[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S1): 156-160. DOI: 10.11779/CJGE2020S1031
shu

Experimental study on difference of shear strength between gravel materials and actual vibroflotation piles

  • 1.

    Changjiang River Scientific Research Institute, Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Wuhan 430010, China

  • 2.

    Changjiang Institute of Survey Planning Design and Research, Wuhan 430010, China

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  • Received Date: June 03, 2020
  • Available Online: December 07, 2022
    Graphical Abstract
    • Abstract
  • The vibroflotation pile method is used to replace and compact the soft foundation with permeable materials such as gravel to form composite foundation, and in the past, the attention to shear strength of this kind composite foundation is little. Due to the compaction and replacement of gravel and soil around piles, difference is shown between gravel materials and actual vibroflotation gravel piles, regardless of particle composition or stress-strain characteristics. Based on field detection, sampling for vibroflotation gravel piles and gravel materials and indoor geotechnical tests to analyze the difference of physical and mechanical properties between vibroflotation gravel piles and gravel materials, the researches show: (1) The content of fine particles in actual piles is significantly higher than that of gravel materials, which mainly comes from the mixing (squeezing) of soft soil around piles during vibroflotation process; (2) The maximum dry density of piles is higher than that of gravel materials, which is directly related to the poor grading of gravel materials and mixing of fine particles; (3) Refer to actual compaction degree in the field, large-scale triaxial tests are carried out on gravel materials and two kinds of piles with different pile spacings, the strength of piles is about 10% lower than that of gravel materials, considering the difference in stress-strain characteristics, if the strength parameter is taken according to 5% axial strain, the strength of piles is more than 20% lower than that of gravel materials, and mixing of soil around piles has a significant deterioration effect on the shear strength and also the stress-strain characteristics of the piles. Based on the above initial conclusions, the modified suggestions for strength design parameters of composite foundation are proposed.
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    • References (12)
  • [1]
    李进元. 振冲碎石桩法地基处理在阴坪水电站中的应用[J]. 岩石力学与工程学报, 2013, 32(增刊1): 2968-2976. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2013S1049.htm

    LI Jin-yuan. Application of foundation treatment with vibro-replacement stone piles to yinping hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(S1): 2968-2976. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2013S1049.htm
    [2]
    陈健, 苏岩松, 张杰, 等. 碎石桩软土复合地基整体抗剪强度研究[J]. 水运工程, 2016(5): 146-148, 161. https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201605027.htm

    CHEN Jian, SU Yan-song, ZHANG Jie, et al. Overall shear strength of stone column-soil composite ground[J]. Port & Waterway Engineering, 2016(5): 146-148, 161. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201605027.htm
    [3]
    RAYAMAJHI D, ASHFORD S A, BOULANGER R W, et al. Dense granular columns in liquefiable ground: I shear reinforcement and cyclic stress ratio reduction[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2016: 04016023.
    [4]
    彭芝平, 杨军, 陈耀光, 等. 饱和盐渍土碎石排水桩加强夯试验研究[J]. 岩土工程学报, 2010, 32(增刊2): 136-141. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2010S2035.htm

    PENG Zhi-ping, YANG Jun, CHEN Yao-guang, et al. Experimental study on ground improvement of saturated saline soil with dynamic consolidation and drainage stone columns[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S2): 136-141. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2010S2035.htm
    [5]
    王德咏, 梁小丛, 牛犇. 振冲密实法处理吹填地基的两个关键技术问题[J]. 水运工程, 2019(6): 163-166. https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201906029.htm

    WANG De-yong, LIANG Xiao-cong, NIU Ben, et al. Two key technical issues of vibroflotation compaction for hydraulic-filled foundation treatment[J]. Port & Waterway Engineering, 2019(6): 163-166. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201906029.htm
    [6]
    欧阳芳. 包裹碎石桩复合地基静动力特性及其设计方法研究[D]. 成都: 西南交通大学, 2017.

    OU Yang-fang. Studies on the Behavior and Design Method for Geosynthetic Encased Stone Columns Composite Ground Under Static and Dynamic Conditions[D]. Chengdu: Southwest Jiaotong Unversity, 2017. (in Chinese)
    [7]
    孙立强, 邵丹丹, 冯守中, 等. 土工合成材料约束碎石桩承载特性研究[J]. 岩土工程学报, 2019, 41(增刊2): 29-32. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2019S2009.htm

    SUN Li-qiang, SHAO Dan-dan, FENG Shou-zhong, et al. Bearing capacity of geosynthetics-enclosed stone columns[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 29-32. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2019S2009.htm
    [8]
    周建安. 碎石桩模型三轴试验及其成果应用分析[J]. 地质灾害与环境保护, 1997, 8(2): 40-45. https://www.cnki.com.cn/Article/CJFDTOTAL-DZHB702.006.htm

    ZHOU Jian-an. Analysis and application of triaxial test results of crushed-stone pile model[J]. Journal of Geological Hazards and Environment Preservation, 1997, 8(2): 40-45. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DZHB702.006.htm
    [9]
    SIAHAAN F, INDRARATNA B, NGO N T, et al. Influence of particle gradation and shape on the performance of stone columns in soft clay[J]. Geotechnical Testing Journal, 2018, 41(6): 20160234.
    [10]
    建筑地基处理规范：JGJ 79—2012[S]. 2012.

    Technical code for ground treatment of buildings: JGJ 79—2012[S]. 2011. (in Chinese)
    [11]
    水电水利工程振冲法地基处理技术规范：DL/T 5214—2016[S]. 2016.

    Technical specification for vibroflotation ground trwatment of hydroelectric and water resources projects: DL/T 5214—2016[S]. 2011. (in Chinese)
    [12]
    龚晓南. 地基处理手册[M]. 3版.北京: 中国建筑工业出版社, 2008.

    GONG Xiao-nan. Foundation Treatment Manual[M]. 3rd ed. Beijing: China Architecture & Building Press, 2008. (in Chinese)
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