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软土地区隔断墙控制基坑变形的作用机理及其效果研究

冯春蕾, 张顶立, 房倩, 侯艳娟

冯春蕾, 张顶立, 房倩, 侯艳娟. 软土地区隔断墙控制基坑变形的作用机理及其效果研究[J]. 岩土工程学报, 2018, 40(11): 2087-2095. DOI: 10.11779/CJGE201811015
引用本文: 冯春蕾, 张顶立, 房倩, 侯艳娟. 软土地区隔断墙控制基坑变形的作用机理及其效果研究[J]. 岩土工程学报, 2018, 40(11): 2087-2095. DOI: 10.11779/CJGE201811015
FENG Chun-lei, ZHANG Ding-li, FANG Qian, HOU Yan-juan. Research on diaphragm wall mechanism and effect of deformation control in soft soil[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(11): 2087-2095. DOI: 10.11779/CJGE201811015
Citation: FENG Chun-lei, ZHANG Ding-li, FANG Qian, HOU Yan-juan. Research on diaphragm wall mechanism and effect of deformation control in soft soil[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(11): 2087-2095. DOI: 10.11779/CJGE201811015

软土地区隔断墙控制基坑变形的作用机理及其效果研究  English Version

基金项目: 国家重点研发计划(2017YFC0805400); 国家自然科学基金重点项目(51738002)
详细信息
    作者简介:

    冯春蕾(1989- ),女,河北邯郸人,博士研究生,主要从事基坑工程方面的研究。E-mail: fclbjtu@163.com。

    通讯作者:

    张顶立,E-mail:zhang-dingli@263.net

  • 中图分类号: TU447

Research on diaphragm wall mechanism and effect of deformation control in soft soil

  • 摘要: 以天津软土地区20个地铁车站基坑实测资料为背景,建立地铁车站基坑标准化模型,采用有限元与正交试验相结合的方法,重点研究隔断墙距同侧围护结构的水平距离L、隔断墙的刚度E及其入土深度H 3个主要设计参数对其控制围护结构内力、侧移以及坑外地表沉降的作用。结果表明:3个参数的变化对基坑的变形控制均有不同程度的影响,其中L主要影响围护结构内力及地表最大沉降,最大沉降可减小60%以上;H主要影响围护结构最大侧移,最大可以减小为未设置隔断墙时的50%左右;而E在常规变化范围内对基坑变形的影响相对较弱。其次,通过引入“相似结构”双排桩的计算理论,建立了L与隔断墙分担围护结构内力及土压力间的定量关系。最后利用Kung等基于可靠度理论提出的预测基坑变形的方法分析软土地区隔断墙的控制效果,同时与实测值和有限元计算结果进行对比,验证了上述结论的适用性。
    Abstract: On the basis of measured data from 20 subway station foundation pits in Tianjin, a normalized model is established and the affection of the distance between diaphragm wall and retaining structure(L), the stiffness(E)and the depth of diaphragm wall(H) which may influence the internal forces (MD) and horizontal displacement (δhm) of the containment structure and the surface subsidence (δvm), are studied by using the finite element method and orthogonal test. And it turns out that the three factors influence the deformation control of foundation pit in varying degrees. L primarily affects MD and δvm, and the maximum settlement can be reduced by more than 60%. And H mainly controls δhm, to the greatest extent, the lateral displacement can be reduced by about 50%. But the impact of E is not obvious within the range of normal variation. Then according to the computation theory for the similar structure of double row pile, the quantitative relationship of internal forces between diaphragm wall and containment structure is established. Finally, the applicability of the above conclusions to the deformation control and prediction of foundation pit in soft soil is verified by using the deformation prediction of Kung et al. to analyses the control effect of diaphragm wall in soft soil area, and by comparing with the measured value with the result of the finite element calculation.
  • [1] 刘国彬, 王卫东. 基坑工程手册[M]. 北京: 中国建筑工业出版社,2009.
    (LIU Guo-bin, WANG Wei-dong.Handbook for foundation pit engineering[M]. Beijing: China Architecture and Building Press, 2009. (in Chinese))
    [2] 项彦勇, 贺少辉, 张弥, 等. 导洞隔离桩墙结构对浅埋暗挖隧道周边地层移动的限制作用[J]. 岩石力学与工程学, 2004, 23(19): 3317-3323.
    (XIANG Yan-yong, HE Shao-hui, ZHANG Mi, et al.Constraint effect of pilot-drift and separation-pile structure on ground movements induced by shallow tunneling[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(19): 3317-3323. (in Chinese))
    [3] 姚海波, 王梦恕, 张顶立, 等. 导洞-隔离桩体系工作机制研究与侧向变形分析[J]. 土木工程学报, 2006, 39(4): 105-109.
    (YAO Hai-bo, WANG Meng-shu, ZHANG Ding-li, et al.Mechanism of a drift-pile system and analysis of its horizontal displacement[J]. China Civil Engineering Journal, 2006, 39(4): 105-109. (in Chinese))
    [4] 费纬. 隔离桩在紧邻浅基础建筑的深基坑工程变形控制中的应用[J]. 岩土工程学报, 2010, 32(增刊1): 265-270.
    (FEI Wei.Application of isolation piles to deformation control of deep foundation pits close to buildings with shallow foundation[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S1): 265-270. (in Chinese))
    [5] 翟杰群, 贾坚, 谢小林. 隔离桩在深基坑开挖保护相邻建筑中的应用[J]. 地下空间与工程学报, 2010, 6(1): 162-166.
    (ZHAI Jie-qun, JIA Jian, XIE Xiao-lin.Practice of partition wall in the building protection projects near deep excavation[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(1): 162-166. (in Chinese))
    [6] 应宏伟, 李涛, 杨永文, 等. 深基坑隔断墙保护邻近建筑物的效果与工程应用分析[J]. 岩土工程学报, 2011, 33(7): 1123-1129.
    (YING Hong-wei, LI Tao, YANG Yong-wen, et al.Effect and application of partition walls in protecting adjacent buildings from deep foundation pits[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(7): 1123-1129. (in Chinese))
    [7] 应宏伟, 李涛, 王文芳. 基于三维数值模拟的深基坑隔断墙优化设计[J]. 岩土力学, 2012, 33(1): 220-226.
    (YING Hong-wei, LI Tao, WANG Wen-fang.Optimization design of partition wall in deep excavations based on 3-D numerical simulation[J]. Rock and Soil Mechanics, 2012, 33(1): 220-226. (in Chinese))
    [8] BILOTTA E, RUSSO G.Use of a line of piles to prevent damages induced by tunnel excavation[J]. Journal of Geotechnical & Geoenvironmental Engineering, 2011, 137(3): 254-262.
    [9] DI M A, GESTO J M, GENS A, et al.Ground deformation and mitigating measures associated with the excavation of a new Metro line[M]// Geotechnical Engineering in Urban Environments. Rotterdam: Millpress Science, 2007: 1901-1906.
    [10] 纪新博, 赵文, 李慎刚, 等. 隔离桩在隧道侧穿邻近浅基建筑中的应用[J]. 东北大学学报(自然科学版), 2013, 34(1): 135-139.
    (JI Xin-bo, ZHAO Wen, LI Shen-gang, et al.Application of isolation piles on metro tunnel for side-crossing the buildings with shallow foundation[J]. Journal of Northeastern University (Natural Science), 2013, 34(1): 135-139. (in Chinese))
    [11] 闫静雅. 桩基础全寿命期对邻近已有隧道的影响研究[D]. 上海: 同济大学, 2007.
    (YAN Jing-ya.The influence of pile foundation in life-cycle on adjacent existing tunnel[D]. Shanghai: Tongji University, 2007. (in Chinese))
    [12] 郑刚, 杜一鸣, 刁钰. 隔离桩对基坑外既有隧道变形控制的优化分析[J]. 岩石力学与工程学报, 2015, 34(增刊1): 3499-3509.
    (ZHENG Gang, DU Yi-ming, DIAO Yu.Optimization analysis of efficiency of isolation piles in controlling the deformation of existing tunnels adjacent to deep excavation[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(S1): 3499-3509. (in Chinese))
    [13] 葛明. 天津软土地区地铁基坑开挖变形规律及影响因素研究[D]. 北京: 北京交通大学, 2016.
    (GE Ming.Study on deformation law and influencing factors of foundation fit excavation in soft soil area of Tianjin[D]. Beijing: Beijing Jiaotong University, 2016. (in Chinese))
    [14] 郑刚, 焦莹. 深基坑工程设计理论及工程应用[M]. 北京: 中国建筑工业出版社, 2010.
    (ZHENG Gang, JIAO Ying.Deep foundation pit engineering design theory and engineering application[M]. Beijing: China Architecture and Building Press, 2010. (in Chinese))
    [15] BURLAND J B.‘Small is beautiful’: the stiffness of soils at small strains[J]. Ninth Laurits Bjerrum Memorial Lecture, Canadian Geotechnical Journal, 1989, 26(4): 499-516.
    [16] BENZ T.Small strain stiffness of soils and its numerical consequences[D]. Stuttgart: Institute of Geotechnical Engineering, University of Stuttgart, 2007.
    [17] 欧章煜. 深开挖工程分析设计理论与实务[M]. 台北: 科技图书股份有限公司, 2002.
    (OU Zhang-yu.Analysis and design theory and practice of deep excavation engineering[M]. Taipei: Science and Technology Books Co. Ltd, 2002. (in Chinese))
    [18] 潘延连. 双排桩支护结构的计算理论研究及数值模拟[D].昆明: 昆明理工大学, 2013.
    (TPAN Yan-lian.Heoretical analysis and numericial calculation of retaining structure with double-row piles[D]. Kunming: Kunming University of Science and Technology, 2013. (in Chinese))
    [19] KUNG G T, JUANG C H, HSIAO E C, et al.Simplified model for wall deflection and ground-surface settlement caused by braced excavation in clays[J]. Journal of Geotechnical & Geoenvironmental Engineering, 2007, 133(6): 731-747.
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出版历程
  • 收稿日期:  2017-11-26
  • 发布日期:  2018-11-24

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