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Volume 45 Issue 11
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ZENG Chaofeng, ZHANG Zuhao, GAO Wenhua, CAI Gang, ZHU Long, CHEN Hongbo, XUE Xiuli, HE Jianqing. Barrier effects of surrounding group piles on deformation of foundation pits induced by dewatering[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(11): 2378-2386. DOI: 10.11779/CJGE20220255
Citation: ZENG Chaofeng, ZHANG Zuhao, GAO Wenhua, CAI Gang, ZHU Long, CHEN Hongbo, XUE Xiuli, HE Jianqing. Barrier effects of surrounding group piles on deformation of foundation pits induced by dewatering[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(11): 2378-2386. DOI: 10.11779/CJGE20220255
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Barrier effects of surrounding group piles on deformation of foundation pits induced by dewatering

  • Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan University of Science and Technology, Xiangtan 411201, China

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  • Received Date: March 08, 2022
  • Available Online: February 15, 2023
    Graphical Abstract
    • Abstract
  • The existing underground structures in urban areas can block the groundwater flow and soil movement (i.e., barrier effects). On this occasion, the design and construction of foundation pits should consider the influences of the barrier effects. However, the mechanism of groundwater seepage and deformation of foundation pits under the barrier effects of the adjacent structures has not been fully revealed. In this study, two laboratory-scale tests are conducted based on a metro foundation pit in Tianjin. A series of stress and deformation sensors are placed in the physical model for pit-soil-structures (taking pile foundation as an example) to monitor the real-time variation of water level, deformations of retaining wall, settlements of ground surface, and pore-water and earth pressures at both sides of the retaining wall during dewatering of the foundation pit. Based on the tests, the deformation laws of the retaining wall and surrounding soil caused by dewatering considering and without considering the adjacent pile foundations are discussed. The mechanism of deformation of the foundation pit induced by dewatering under the barrier effects of pile foundations is also revealed. Two main conclusions are drawn: (1) Larger groundwater drawdown in the pit can be caused by smaller water yield due to the barrier effects of pile foundations on groundwater flow. In this case, the number of pumping wells in the pit can be appropriately reduced to achieve the same pumping effects. (2) The barrier effects of the adjacent pile foundations on the ground movement may lead to a larger lateral pressure in front of the retaining wall and a smaller lateral pressure behind the enclosure wall. On this occasion, the deformation of dewatering-induced retaining wall and settlement of ground surface outside the pit may be much smaller. The effects of the adjacent underground structures on the foundation pits should be considered in the design so that a more reasonable supporting scheme and construction plan can be obtained.
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    • References (15)
  • [1]
    木林隆, 朱孟玺, 黄茂松, 等. 基于临近桩基保护要求的基坑变形控制指标研究[J]. 岩土工程学报, 2021, 43(3): 465-470. doi: 10.11779/CJGE202103009

    MU Linlong, ZHU Mengxi, HUANG Maosong, et al. Control criteria for deformation of foundation pits based on protection requirements of adjacent pile foundations[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(3): 465-470. (in Chinese) doi: 10.11779/CJGE202103009
    [2]
    李涛, 杨依伟, 贾奥运, 等. 空间效应下狭长深基坑地表三维变形预测[J]. 中国矿业大学学报, 2020, 49(6): 1101-1110. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD202006009.htm

    LI Tao, YANG Yiwei, JIA Aoyun, et al. Prediction of three-dimensional surface deformation of long and narrow deep foundation pit under spatial effect[J]. Journal of China University of Mining & Technology, 2020, 49(6): 1101-1110. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD202006009.htm
    [3]
    徐长节, 成守泽, 蔡袁强, 等. 非对称开挖条件下基坑变形性状分析[J]. 岩土力学, 2014, 35(7): 1929-1934. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201407018.htm

    XU Changjie, CHENG Shouze, CAI Yuanqiang, et al. Deformation characteristic analysis of foundation pit under asymmetric excavation condition[J]. Rock and Soil Mechanics, 2014, 35(7): 1929-1934. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201407018.htm
    [4]
    曾超峰, 白宁, 袁志成, 等. 邻近结构埋深对开挖前抽水引发基坑变形影响[J]. 中国矿业大学学报, 2022, 51(2): 283-292. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD202202008.htm

    ZENG Chaofeng, BAI Ning, YUAN Zhicheng, et al. Effect of buried depth of adjacent structure on the foundation pit deformation during pre-excavation dewatering[J]. Journal of China University of Mining & Technology, 2022, 51(2): 283-292. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD202202008.htm
    [5]
    刘祥勇, 宋享桦, 谭勇, 等. 南通富水砂性地层地铁深基坑抽水回灌现场试验研究[J]. 岩土工程学报, 2020, 42(7): 1331-1340. doi: 10.11779/CJGE202007017

    LIU Xiangyong, SONG Xianghua, TAN Yong, et al. Field tests on groundwater recharge of deep excavations in Nantong water-rich sandy stratum[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(7): 1331-1340. (in Chinese) doi: 10.11779/CJGE202007017
    [6]
    杨清源, 赵伯明. 潜水层基坑降水引起地表沉降试验与理论研究[J]. 岩石力学与工程学报, 2018, 37(6): 1506-1519. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201806020.htm

    YANG Qing-yuan, ZHAO Bo-ming. Experimental and theoretical study on the surface subsidence by dewatering of foundation pit in phreatic aquifer[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(6): 1506-1519. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201806020.htm
    [7]
    吕斌泉, 冯晓腊, 熊宗海. 武汉古河道承压水井流理论及在基坑降水中应用[J]. 岩土工程学报, 2020, 42(3): 533-541. doi: 10.11779/CJGE202003015

    LÜ Binquan, FENG Xiaola, XIONG Zonghai. Theory of artesian well flow in ancient river in Wuhan and its application in foundation pit dewatering[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(3): 533-541. (in Chinese) doi: 10.11779/CJGE202003015
    [8]
    许烨霜, 沈水龙, 马磊. 地下构筑物对地下水渗流的阻挡效应[J]. 浙江大学学报(工学版), 2010, 44(10): 1902-1906. https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC201010012.htm

    XU Yeshuang, SHEN Shuilong, MA Lei. Cutoff effect of groundwater seepage due to existence of underground structure[J]. Journal of Zhejiang University (Engineering Science), 2010, 44(10): 1902-1906. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC201010012.htm
    [9]
    曹依雯, 黄润秋, 沈水龙, 等. 基桩对含水层渗流阻挡作用效应研究[J]. 岩土力学, 2014, 35(6): 1617-1622. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201406015.htm

    CAO Yiwen, HUANG Runqiu, SHEN Shuilong, et al. Investigation of blocking effect on groundwater seepage of piles in aquifer[J]. Rock and Soil Mechanics, 2014, 35(6): 1617-1622. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201406015.htm
    [10]
    薛秀丽, 廖欢, 曾超峰, 等. 既有地下结构水-土阻隔效应对基坑抽水引发地层变形影响机制[J]. 岩土工程学报, 2023, 45(1): 103-111. doi: 10.11779/CJGE20211393

    (XUE Xiuli, LIAO Huan, ZENG Chaofeng, et al. Barrier effect of existing underground structure on strata deformation induced by foundation pit dewatering[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(1): 103-111. doi: 10.11779/CJGE20211393
    [11]
    TAN Y, LI X, KANG Z J, et al. Zoned excavation of an oversized pit close to an existing metro line in stiff clay: case study[J]. Journal of Performance of Constructed Facilities, 2015, 29(6): 04014158.
    [12]
    LIAO S M, WEI S F, SHEN S L. Structural responses of existing metro stations to adjacent deep excavations in Suzhou, China[J]. Journal of Performance of Constructed Facilities, 2016, 30(4): 04015089.
    [13]
    曾超峰, 王硕, 宋伟炜, 等. 内隔墙对开挖前抽水引发软土区地铁深基坑变形的控制效果[J]. 岩石力学与工程学报, 2021, 40(6): 1277-1286. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202106018.htm

    ZENG Chaofeng, WANG Shuo, SONG Weiwei, et al. Control effect of cross walls on metro foundation pit deformation induced by pre-excavation dewatering in soft soils[J]. Chinese Journal of Rock Mechanics and Engineering, 2021, 40(6): 1277-1286. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202106018.htm
    [14]
    曾超峰, 薛秀丽, 宋伟炜, 等. 开挖前降水引发基坑变形机制模型试验研究[J]. 岩土力学, 2020, 41(9): 2963-2972, 2983. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202009013.htm

    ZENG Chaofeng, XUE Xiuli, SONG Weiwei, et al. Mechanism of foundation pit deformation caused by dewatering before soil excavation: an experimental study[J]. Rock and Soil Mechanics, 2020, 41(9): 2963-2972, 2983. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202009013.htm
    [15]
    XU Y S, YAN X X, SHEN S L, et al. Experimental investigation on the blocking of groundwater seepage from a waterproof curtain during pumped dewatering in an excavation[J]. Hydrogeology Journal, 2019, 27(7): 2659-2672.
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