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Volume 43 Issue 12
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SHENG Ming-qiang, QIAN Zeng-zhen, YANG Wen-zhi, LU Xian-long. Field compression and uplift tests on micropiles in collapsible loess under completely-soaked and saturated conditions[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(12): 2258-2264. DOI: 10.11779/CJGE202112012
Citation: SHENG Ming-qiang, QIAN Zeng-zhen, YANG Wen-zhi, LU Xian-long. Field compression and uplift tests on micropiles in collapsible loess under completely-soaked and saturated conditions[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(12): 2258-2264. DOI: 10.11779/CJGE202112012
shu

Field compression and uplift tests on micropiles in collapsible loess under completely-soaked and saturated conditions

  • 1.

    Nanchang University, Nanchang 330031, China

  • 2.

    China University of Geosciences, Beijing100083, China

  • 3.

    China Electric Power Research Institute, Beijing100192, China

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  • Received Date: May 09, 2021
  • Available Online: November 30, 2022
    Graphical Abstract
    • Abstract
  • In order to investigate the compression and uplift bearing capacity of micropiles in collapsible loess, a method for loess prewetting under completely soaked and saturated conditions is firstly designed. Consequently, the comparative field compression and uplift load tests on single micropile and group micropiles are respectively carried out in the two collapsible loess sites in Gansu Province. Both the site conditions and the load tests are documented comprehensively. The compression and uplift load-displacement curves of the single micropile and group micropiles in completely soaked and saturated loess generally follow a typical two-phase steep change pattern, which is quite different from those in-situ moisture content loess because they can be simplified into three distinct regions: initially linear, curvilinear transition and finally linear regions. Both in the in-situ moisture content loess and the completely soaked and saturated loess, the compression or uplift loaded single micropiles should be considered as the frictional pile foundations, and the tip resistances are only about 10% to 15% of the applied compression loads. For the micropiles in loess under in-situ moisture content, the ultimate uplift load capacities are 66% to 87% of those under compression. However, the loess under completely soaked and saturated condition will lead to a reduction of 70% in compressive bearing capacity and 50% in uplift bearing capacity for single micropile, and that for group micropiles is about 75% in compressive bearing capacity. These experimental results may provide a reference for the designers in loess in the future.
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    • References (19)
  • [1]
    乔建伟, 郑建国, 刘争宏, 等. “一带一路”沿线特殊岩土分布与主要工程问题[J]. 灾害学, 2019, 34(增刊1): 65-71. https://www.cnki.com.cn/Article/CJFDTOTAL-ZHXU2019S1012.htm

    QIAO Jian-wei, ZHENG Jian-guo, LIU Zheng-hong, et al. The distribution and major engineering problems of special soil and rock along one belt one road[J]. Journal of Catastrophology, 2019, 34(S1): 65-71. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZHXU2019S1012.htm
    [2]
    陈正汉, 郭楠. 非饱和土与特殊土力学及工程应用研究的新进展[J]. 岩土力学, 2019, 40(1): 1-54. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201901002.htm

    CHEN Zheng-han, GUO Nan. New developments of mechanics and application for unsaturated soils and special soils[J]. Rock and Soil Mechanics, 2019, 40(1): 1-54. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201901002.htm
    [3]
    朱彦鹏, 杨奎斌, 王海明, 等. 微浸水对桩基负摩阻力影响的试验初探[J]. 岩土工程学报, 2018, 40(增刊1): 1-7. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2018S1002.htm

    ZHU Yan-peng, YANG Kui-bin, WANG Hai-ming, et al. Preliminary exploration of tests on effect of micro-immersion on negative skin friction of pile foundation[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S1): 1-7. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2018S1002.htm
    [4]
    黄雪峰, 陈正汉, 哈双, 等. 大厚度自重湿陷性黄土中灌注桩承载性状与负摩阻力的试验研究[J]. 岩土工程学报, 2007, 29(3): 338-346. doi: 10.3321/j.issn:1000-4548.2007.03.005

    HUANG Xue-feng, CHEN Zheng-han, HA Shuang et al. Research on bearing behaviors and negative friction force for filling piles in the site of collapsible loess with big thickness[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(3): 338-346. (in Chinese) doi: 10.3321/j.issn:1000-4548.2007.03.005
    [5]
    李大展, 滕延京, 何颐华, 等. 湿陷性黄土中大直径扩底桩垂直承载性状的试验研究[J]. 岩土工程学报, 1994, 16(2): 11-21. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC402.001.htm

    LI Da-zhan, TENG Yan-jing, HE Yi-hua, et al. Vertical bearing behaviour of large diameter belled pile in collapsible loess[J]. Chinese Journal of Geotechnical Engineering, 1994, 16(2): 11-21. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC402.001.htm
    [6]
    刘三仓, 隋国秀, 刘志伟. 非饱和-饱和状态下黄土地基中灌注桩承载性能的研究[J]. 岩土工程学报, 2007, 29(1): 147-151. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200701025.htm

    LIU San-cang, SUI Guo-xiu, LIU Zhi-wei. Research on bearing capacity of cast-in-place piles in unsaturated to saturated loess[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(1): 147-151. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200701025.htm
    [7]
    鲁先龙, 乾增珍, 崔强. 黄土地基掏挖扩底基础抗拔试验研究[J]. 岩土力学, 2014, 35(3): 647-652. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201403007.htm

    LU Xian-long, QIAN Zeng-zhen, CUI Qiang. Experimental investigation on uplift behavior of belled piers in loess[J]. Rock and Soil Mechanics, 2014, 35(3): 647-652. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201403007.htm
    [8]
    ARMOURTGRONECKPKEELEYJMicropile design and construction guidelines implementation manual priority technologies program (PTP) projectReport No. FHWA-SA-97-070Washington D CDepartment of Transportation Federal Highway20003233

    ARMOUR T, GRONECK P, KEELEY J, et al. Micropile design and construction guidelines implementation manual priority technologies program (PTP) project[R]. Report No. FHWA-SA-97-070. Washington D C: Department of Transportation Federal Highway, 2000: 32-33.
    [9]
    CADDEN A, GÓMEZ J, BRUCE D, et al. Micropiles: recent advances and future trends[C]//Current Practices and Future Trends in Deep Foundations, ASCE, 2004: 140-165. Los Angeles,
    [10]
    周俊鹏, 黄雪峰, 刘自龙, 等. 黄土地基中微型抗压与抗拔桩对比试验研究[J]. 水利与建筑工程学报, 2017, 15(1): 121-125. https://www.cnki.com.cn/Article/CJFDTOTAL-FSJS201701022.htm

    ZHOU Jun-peng, HUANG Xue-feng, LIU Zi-long, et al. Experimental study of micro compression and uplift pile in loess foundation[J]. Journal of Water Resources and Architectural Engineering, 2017, 15(1): 121-125. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-FSJS201701022.htm
    [11]
    武小鹏, 王兰民, 房建宏, 等. 原状黄土地基渗水特性及其与自重湿陷的关系研究[J]. 岩土工程学报, 2018, 40(6): 1002-1010. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201806006.htm

    WU Xiao-peng, WANG Lan-min, FANG Jian-hong, et al. Seepage characteristics and their relationship with self-weight collapse of intact loess ground[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(6): 1002-1010. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201806006.htm
    [12]
    黄雪峰, 陈正汉, 哈双, 等. 大厚度自重湿陷性黄土场地湿陷变形特征的大型现场浸水试验研究[J]. 岩土工程学报, 2006, 28(3): 382-389. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200603023.htm

    HUANG Xue-feng, CHEN Zheng-han, HA shuang, et al. Large area field immersion tests on characteristics of deformation of self-weight collapse loess under overburden pressure[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(3): 382-389. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200603023.htm
    [13]
    邵生俊, 李骏, 邵将, 等. 大厚度湿陷性黄土地层的现场砂井浸水试验研究[J]. 岩土工程学报, 2016, 38(9): 1549-1558. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201609002.htm

    SHAO Sheng-jun, LI Jun, SHAO Jiang, et al. In-situ sand well immersion tests on self-weight collapsible loess site with large depth[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(9): 1549-1558. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201609002.htm
    [14]
    张延杰, 李建东, 王旭, 等. 人工制备湿陷性黄土地基地下连续墙浸水试验研究[J]. 岩土工程学报, 2018, 40(增刊1): 73-80. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2018S1013.htm

    ZHANG Yan-jie, LI Jian-dong, WANG Xu, et al. Soaking test on underground diaphragm wall in artificially prepared collapsible loess foundation[J]. Chinese Journal of Geotechnical Engineering 2018, 40(S1): 73-80. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2018S1013.htm
    [15]
    张西, 刘生奎, 李永祥. 黄土地基直柱掏挖基础浸水静载试验及设计优化[J]. 电力建设, 2013, 34(5): 17-21. https://www.cnki.com.cn/Article/CJFDTOTAL-DLJS201305007.htm

    ZHANG Xi, LIU Sheng-kui, LI Yong-xiang. Design optimization and water immersion static load test on undisturbed soil column foundation in collapsible loess soil[J]. Electric Power Construction, 2013, 34(5): 17-21. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DLJS201305007.htm
    [16]
    黄广龙, 方乾, 苏荣臻. 软土地基微型桩抗拔试验研究[J]. 岩土工程学报, 2010, 32(11): 1788-1793. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201011028.htm

    HUANG Guang-long, FANG Qian, SU Rong-zhen. Field test on uplift behavior of micropiles in soft ground[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(11): 1788-1793. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201011028.htm
    [17]
    吕凡任, 陈仁朋, 陈云敏, 等. 软土地基上微型桩抗压和抗拔特性试验研究[J]. 土木工程学报, 2005, 38(3): 99-105. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC200503015.htm

    LÜ Fan-ren, CHEN Ren-peng, CHEN Yun-min, et al. Field tests on compression and uplift behavior of micropiles in soft ground[J]. China Civil Engineering Journal, 2005, 38(3): 99-105. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC200503015.htm
    [18]
    QIAN Z Z, LU X L. Behavior of micropiles in soft soil under vertical loading[J]. Advanced Materials Research, 2011, 243/244/245/246/247/248/249: 2143-2150.
    [19]
    HAN J, YE S L. A field study on the behavior of micropiles in clay under compression or tension[J]. Canadian Geotechnical Journal, 2006, 43(1): 19-29.
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