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软土地区双侧深基坑施工对邻近地铁车站及盾构隧道变形影响的分析

吕高乐 易领兵 杜明芳 李帅兵

吕高乐, 易领兵, 杜明芳, 等, 2018. 软土地区双侧深基坑施工对邻近地铁车站及盾构隧道变形影响的分析. 地质力学学报, 24 (5): 682-691. DOI: 10.12090/j.issn.1006-6616.2018.24.05.069
引用本文: 吕高乐, 易领兵, 杜明芳, 等, 2018. 软土地区双侧深基坑施工对邻近地铁车站及盾构隧道变形影响的分析. 地质力学学报, 24 (5): 682-691. DOI: 10.12090/j.issn.1006-6616.2018.24.05.069
LV Gaole, YI Lingbing, DU Mingfang, et al., 2018. ANALYSIS OF INFLUENCE OF DEEP FOUNDATION PIT CONSTRUCTION ON DEFORMATION OF ADJACENT SUBWAY STATION AND SHIELD TUNNEL IN SOFT SOIL AREA. Journal of Geomechanics, 24 (5): 682-691. DOI: 10.12090/j.issn.1006-6616.2018.24.05.069
Citation: LV Gaole, YI Lingbing, DU Mingfang, et al., 2018. ANALYSIS OF INFLUENCE OF DEEP FOUNDATION PIT CONSTRUCTION ON DEFORMATION OF ADJACENT SUBWAY STATION AND SHIELD TUNNEL IN SOFT SOIL AREA. Journal of Geomechanics, 24 (5): 682-691. DOI: 10.12090/j.issn.1006-6616.2018.24.05.069

软土地区双侧深基坑施工对邻近地铁车站及盾构隧道变形影响的分析

doi: 10.12090/j.issn.1006-6616.2018.24.05.069
详细信息
    作者简介:

    吕高乐(1978-), 男, 本科, 高级工程师, 主要从事隧道及地下工程方面的研究工作。E-mail:ylb7159628@163.com

    通讯作者:

    易领兵(1988-), 男, 硕士, 工程师, 主要从事隧道及地下工程方面的研究工作。E-mail:877800536@qq.com

  • 中图分类号: U231;U456

ANALYSIS OF INFLUENCE OF DEEP FOUNDATION PIT CONSTRUCTION ON DEFORMATION OF ADJACENT SUBWAY STATION AND SHIELD TUNNEL IN SOFT SOIL AREA

  • 摘要: 以某软土地区邻近地铁车站及盾构隧道的双侧深基坑工程为背景,运用ABAQUS数值计算软件对邻近地铁车站及盾构隧道的双侧深基坑施工进行数值模拟,研究了双侧深基坑施工过程对基坑坑内土体隆起与坑外土体沉降的影响,分析了双侧深基坑施工过程中地铁车站及盾构隧道变形情况,得出地铁车站及盾构隧道变形规律。计算结果表明:基坑内侧土体隆起最大值为54.3 mm;围护结构X向位移最大值为32.8 mm,Y向位移最大值为26.8 mm;车站竖向位移最大值发生在A1区开挖至坑底工况,最大值为6.8 mm,而车站水平位移最大值为7.6 mm;弯矩累计增量最大值155.9 kN·m/m,经计算,施工过程对车站主体结构影响很小;盾构隧道X向水平位移最大值为4.7 mm;而盾构隧道沉降最大值为3.8 mm,发生在A1区开挖至坑底工况。

     

  • 图  1  基坑总平面图

    Figure  1.  General plan of the foundation pit

    图  2  基坑典型地质剖面图1-1

    Figure  2.  Typical geological profile of the foundation pit 1-1

    图  3  整体有限元计算模型示意图(土体)

    Figure  3.  A schematic diagram of the overall finite element model(soil)

    图  4  整体有限元计算模型示意图(结构)

    Figure  4.  Overall finite element calculation model schematic diagram(structure)

    图  5  A1区开挖至坑底沉降图

    Figure  5.  Settlement diagram from excavation to the bottem of the pit in Area A1

    图  6  A2区与B区开挖至坑底沉降图

    Figure  6.  Settlement diagram from excavation to the bottom the pit in Area A2 and Area B of

    图  7  考虑水平支撑温度及混凝土干缩作用沉降图

    Figure  7.  Settlement diagram considering the horizontal support temperature and the concrete dry shrinkage

    图  8  拆除水平支撑后沉降图

    Figure  8.  Settlement diagram after the removal of the horizontal support

    图  9  A1区开挖至坑底车站竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  9.  Vertical displacement diagram of the subway station from excavation to pit bottom in Area A1

    图  10  A2区与B区开挖至坑底车站竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  10.  Vertical displacement diagram of the subway station from excavation to pit bottom in Area A2 and Area B

    图  11  考虑水平支撑温度及混凝土干缩作用车站竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  11.  Vertical and horizontal displacement diagrams of the subway station considering horizontal support temperature and concrete dry shrinkage

    图  12  拆除水平支撑后车站竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  12.  Vertical and horizontal displacement diagrams of the subway station after the removal of the horizontal support

    图  13  A1区开挖至坑底盾构区间竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  13.  Vertical and horizontal displacement diagrams of the shield section from excavation to pit bottom in Area A1

    图  14  A2区与B区开挖至坑底盾构区间竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  14.  Vertical and horizontal displacement diagrams of the shield section from excavation pit bottom in Area A2 and Area B

    图  15  考虑水平支撑温度及混凝土干缩作用盾构区间竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  15.  Vertical and horizontal displacement diagrams of the shield section considering horizontal support temperature and concrete dry shrinkage

    图  16  拆除水平支撑后盾构区间竖向位移图与水平位移图

    a—竖向;b—水平

    Figure  16.  Vertical and horizontal displacement diagrams of the shield section after the removal of the horizontal support

    表  1  各分区开挖信息表

    Table  1.   Information table for excavation of each division

    区域 现场地大沽标高/m 地下室层高/m 基础(含垫层)厚度/m 坑底大沽标高/m 地下室埋深/m
    A地块裙房 2.3 6.2/3.7 1.4 -9.6 11.9
    A地块百米塔楼 2.3 6.2/3.7 2.1 -10.3 12.6
    B地块 2.3 4.0/5.55 1.4 -19.0 11.15
    下载: 导出CSV

    表  2  土体物理参数表

    Table  2.   Physical parameters table of the soil

    地层编号 土体名称 重度γ/(kN/m3) 直剪固结快剪 直剪快剪
    c/kPa ϕ/(°) c/kPa ϕ/(°)
    1-1 素填土 18.8 12.8 15.0 10.0 6.3
    4-1 粉质粘土、粘土 19.0 14.9 17.8 12.5 12.8
    6-3 粉土 19.6 7.8 31.0 7.5 29.5
    6-4 粉质粘土 19.1 13.8 17.4 11.1 15.0
    8-1 粉质粘土 20.0 20.4 18.5 18.8 16.6
    8-2 粉土 20.0 8.1 30.9 6.4 29.3
    9-1 粉质粘土 20.1 20.4 21.0 18.3 19.1
    11-1 粉质粘土 20.0 20.8 21.2 18.7 19.4
    11-2 粉质粘土 20.0 20.9 21.5 18.5 19.7
    11-3 粉质粘土 20.0 20.2 21.7 18.9 19.2
    12-1 粉质粘土 20.4 20.4 21.0 18.3 19.1
    13-1 粉质粘土 20.6 20.9 21.1 18.6 19.5
    下载: 导出CSV

    表  3  水平支撑系统表

    Table  3.   Horizontal support system table

    项目 支撑中心标高/m 支撑下皮与结构净空/m 腰梁/m 环梁a/m 环梁b/m 环梁c/m 对撑/m 角撑、辐射撑/m 联系杆件/m 板/m
    A1区 -1.0 3.05 1.6×0.9 2.6×0.9 2.0×0.9 1.4×0.9 - 0.8×0.9 0.6×0.7 0.4
    A2区 -1.0 3.05 1.6×0.9 - 2.0×0.9 1.4×0.9 1.4×0.9 0.8×0.9 0.6×0.7 0.4
    B区 -1.0 0.45 1.8×0.9 1.8×0.9 1.4×0.9 - 1.4×0.9 0.8×0.9 - 0.4
    下载: 导出CSV

    表  4  土的计算参数

    Table  4.   Calculation parameters of the soil

    编号 对应土层 厚度/m γ/(kN/m3) Φ/(°) Es/MPa λ κ M
    1 1-1和4-1 5.5 18 16 4 0.004 0.006 0.61
    2 6-3 6.4 19.5 31 12.1 - - -
    3 6-4和8-1 10.1 19.2 18 5.6 0.031 0.004 0.69
    4 8-2 2 19.8 30.9 10.9 - - -
    5 9-1 6.3 20 21 6.5 0.026 0.003 0.81
    6 11 22 19.9 17.3 6.9 0.025 0.003 0.65
    7 12-1和13-1 17.7 20 19.9 8 0.021 0.003 0.73
    下载: 导出CSV

    表  5  基坑结构、新建地铁车站尺寸及计算参数

    Table  5.   Structure of the foundation pit, dimensions and calculation parameters of the new subway station

    结构、围护类型 厚度/m 材料 容重γ/(kN/m3) 弹性模量E/MPa 刚度(KN/m)
    灌注桩φ1000 等效为1.1 C30 25 -
    灌注桩φ1100 等效为1.1 C30 25 等效为19900 -
    灌注桩φ1200 等效为1.1 C30 25 等效为26200 -
    地下连续墙 1.0 C30 25 30000 -
    水平支撑 - C30 25 30000 -
    基坑换撑 - C30 25 - 1000
    站体顶板 0.9 C30 25 30000 -
    站体底板 1.4 C30 25 30000 -
    站体中板 0.4 C30 25 30000 -
    站体边墙 1.1 C35 25 31500 -
    站体立柱 - C45 25 33500 -
    下载: 导出CSV

    表  6  施工步序

    Table  6.   Construction step

    序号 内容
    1 模拟基坑围护结构、坑内工程桩,车站顶板进行覆土
    2 A1区开挖,至第一层坑底深度-3.30 m
    3 施工该区域水平支撑
    4 A1区第二层土体岛式开挖,撑下区域挖至坑底深度-11.90 m
    5 开挖A1区剩余土体
    6 施工A1区换撑,挖除覆土,施工地铁站体上部结构
    7 A2区与B区同时开挖,至第一层坑底深度-3.30 m
    8 施工该区域水平支撑
    9 A2区与B区同时开挖,A2至坑底深度-11.90 m,B区至坑底深度-11.15 m
    10 水平支撑在温度变化及混凝土干缩作用下收缩
    11 施工A2区与B区换撑
    12 拆撑A1区、A2区与B区的水平支撑
    下载: 导出CSV

    表  7  基坑围护结构变形值表

    Table  7.   Table of deformation values of enclosure structure in the foundation pit

    阶段 X向最大值/mm Y向最大值/mm
    A1区开挖至坑底 23.6 23.8
    A2区与B区开挖至坑底 23.6 23.8
    考虑水平支撑温度及混凝土干缩作用 31.7 25.8
    拆除水平支撑 32.8 26.8
    下载: 导出CSV

    表  8  车站结构变形值表

    Table  8.   Station structure deformation value table

    阶段 竖向位移最大值/mm 水平位移最大值/mm
    A1区开挖至坑底 6.8 5.3
    A2区与B区开挖至坑底 4.3 6.9
    考虑水平支撑温度及混凝土干缩作用 4.3 7.6
    拆除水平支撑 4.3 7.6
    下载: 导出CSV

    表  9  地铁车站附加弯矩表

    Table  9.   Additional bending moment table for the subway station

    阶段 X向最大值(kN×m/m) Y向最大值(kN×m/m)
    A1区开挖至坑底,该步弯矩增量 34.7 36.1
    A2区与B区开挖至坑底,该步弯矩增量 113.7 34.9
    考虑水平支撑温度及混凝土干缩作用,该步弯矩增量 52.3 15.3
    拆除水平支撑,该步弯矩增量 24.2 10.9
    弯矩增量和 155.9 65.9
    下载: 导出CSV

    表  10  盾构隧道位移表

    Table  10.   Displacement table of the shield tunnel

    阶段 X向水平位移最大值/mm 沉降最大值/mm
    A1区开挖至坑底 4.4 3.8
    A2区与B区开挖至坑底 4.5 2.8
    考虑水平支撑温度及混凝土干缩作用 4.6 2.7
    拆除水平支撑 4.7 2.8
    下载: 导出CSV

    表  11  盾构隧道位移表

    Table  11.   Displacement table of the shield tunnel

    控制项目 累计值/mm 变化速率/(mm/d)
    车站结构竖向位移 10 0.5
    车站结构水平位移 10 0.5
    隧道竖向位移 10 0.5
    隧道水平位移 6 0.5
    下载: 导出CSV
  • [1] 冯国健.紧邻深大长基坑的地铁结构保护对策与实践[J].隧道建设(中英文), 2018, 38(1):103~109. http://d.old.wanfangdata.com.cn/Periodical/sdjs201801014

    FENG Guojian. Protection coutermeasures for metro structure adjacent to deep and large foundation pit[J]. Tunnel Construction, 2018, 38(1):103~109. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/sdjs201801014
    [2] 刘蕾, 刘雪玲, 周金喜.地裂缝与斜交地铁隧道动力响应数值分析[J].地质力学学报, 2018, 24(2):238~243. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20180210&journal_id=dzlxxb

    LIU Lei, LIU Xueling, ZHOU Jinxi. Numerical analysis on dynamic response of the oblique metro tunnel in ground fissure area[J]. Journal of Geomechanics, 2018, 24(2):238~243. (in Chinese with English abstract) http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20180210&journal_id=dzlxxb
    [3] 陈晓丹, 柏文锋, 张旭群, 等.岩溶强发育地区基坑施工对邻近地铁结构影响分析[J].施工技术, 2017, 46(11):131~134. http://d.old.wanfangdata.com.cn/Periodical/sgjs201711030

    CHEN Xiaodan, BAI Wenfeng, ZHANG Xuqun, et al. Impact analysis of foundation excavation construction on adjacent to subway structures in strong karst development area[J]. Construction Technology, 2017, 46(11):131~134. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/sgjs201711030
    [4] 王罡.基坑开挖施工对邻近运营地铁隧道变形影响分析[J].施工技术, 2016, 45(20):86~90. http://d.old.wanfangdata.com.cn/Periodical/sgjs201620021

    WANG Gang. Influence analysis of deep foundation excavation construction on deformation of adjacent subway tunnel[J]. Construction Technology, 2016, 45(20):86~90. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/sgjs201620021
    [5] 蒋志珍.多基坑同时施工对相邻地铁线路的叠加效应影响及控制措施[J].城市轨道交通研究, 2017, 20(10):102~105. http://d.old.wanfangdata.com.cn/Periodical/csgdjtyj201710023

    JIANG Zhizhen. Influence of superposed effect on subway by simultaneous construction of multiple foundations and the control measures[J]. Urban Mass Transit, 2017, 20(10):102~105. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/csgdjtyj201710023
    [6] 冯龙飞, 杨小平, 刘庭金.紧邻地铁侧方深基坑支护设计及变形控制[J].地下空间与工程学报, 2015, 11(6):1581~1587. http://d.old.wanfangdata.com.cn/Periodical/dxkj201506032

    FENG Longfei, YANG Xiaoping, LIU Tingjin. Supporting design and deformation control of deep excavation adjacent to the metro side[J]. Chinese Journal of Underground Space and Engineering, 2015, 11(6):1581~1587. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/dxkj201506032
    [7] 李光伟, 杜宇本, 蒋良文, 等.大瑞铁路高黎贡山越岭段主要工程地质问题与地质选线[J].地质力学学报, 2015, 21(1):73~86. doi: 10.3969/j.issn.1006-6616.2015.01.009

    LI Guangwei, DU Yuben, JIANG Liangwen, et al. Research on the engineering geology condition and railway routes comparison along the Mt. Gaoligong section, Dali-RUILI railway[J]. Journal of Geomechanics, 2015, 21(1):73~86. (in Chinese with English abstract) doi: 10.3969/j.issn.1006-6616.2015.01.009
    [8] 王德斌, 曹思云.洼东煤矿软岩巷道支护方式选择[J].地质力学学报, 2013, 19(1):113~116. doi: 10.3969/j.issn.1006-6616.2013.01.012

    WANG Debin, CAO Siyun. Selection of soft rock roadway supporting methods in the Wadong coal mine[J]. Chinese Journal of Geomechanics, 2013, 19(1):113~116. (in Chinese with English abstract) doi: 10.3969/j.issn.1006-6616.2013.01.012
    [9] 曹前.既有地铁隧道上方基坑开挖特性研究[J].铁道标准设计, 2018, 62(5):109~115. http://d.old.wanfangdata.com.cn/Periodical/tdbzsj201805023

    CAO Qian. Research on characteristics of foundation pit excavation above existing subway tunnelJ]. Railway Standard Design, 2018, 62(5):109~115. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/tdbzsj201805023
    [10] 郑余朝, 施博文, 孙克国, 等.基坑近接既有地铁盾构隧道施工影响分区方法[J].西南交通大学学报, 2017, 52(5):910~918. doi: 10.3969/j.issn.0258-2724.2017.05.010

    ZHENG Yuchao, SHI Bowen, SUN Keguo, et al. Impact of partition method in pit construction adjacent to existing metro shield tunnel[J]. Journal of Southwest Jiaotong University, 2017, 52(5):910~918. (in Chinese with English abstract) doi: 10.3969/j.issn.0258-2724.2017.05.010
    [11] 杨骏, 李夫杰.深基坑施工对临近地铁盾构隧道的影响原理及规律研究[J].南京理工大学学报, 2016, 40(4):493~503. http://d.old.wanfangdata.com.cn/Periodical/njlgdxxb201604019

    YANG Jun, LI Fujie. Influence principle and law on deep foundation pit construction to near subway shield tunnel[J]. Journal of Nanjing University of Science and Technology, 2016, 40(4):493~503. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/njlgdxxb201604019
    [12] 郭永发, 杨翔, 叶林, 等.某基坑支护方案对相邻地铁区间的影响分析[J].地下空间与工程学报, 2015, 11(3):726~731. http://d.old.wanfangdata.com.cn/Periodical/dxkj201503032

    GUO Yongfa, YANG Xiang, YE Lin, et al. Influence of foundation pit supporting scheme on adjacent existing subway tunnel[J]. Chinese Journal of Underground Space and Engineering, 2015, 11(3):726~731. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/dxkj201503032
    [13] 左殿军, 史林, 李铭铭, 等.深基坑开挖对邻近地铁隧道影响数值计算分析[J].岩土工程学报, 2014, 36(S2):391~395. http://d.old.wanfangdata.com.cn/Periodical/ytgcxb2014z2068

    ZUO Dianjun, SHI Lin, LI Mingming, et al. Numerical analysis of influence of deep excavations on adjacent subway tunnels[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(S2):391~395. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/ytgcxb2014z2068
    [14] 龙宏德, 刘俊景, 王定军, 等.地铁隧道上方长距离并行基坑开挖的施工影响及变形控制[J].城市轨道交通研究, 2018, 21(1):106~112. http://d.old.wanfangdata.com.cn/Periodical/csgdjtyj201801026

    LONG Hongde, LIU Junjing, WANG Dingjun, et al. Influence of long distance parallel foundation pit exca-vation on subway tunnel construction and deformation control[J]. Urban Mass Transit, 2018, 21(1):106~112. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/csgdjtyj201801026
    [15] 孙立柱.基坑开挖对紧邻地铁车站的影响分析[J].特种结构, 2016, 33(6):52~55. http://d.old.wanfangdata.com.cn/Periodical/gcjsysj201611013

    SUN Lizhu. Influence analysis of foundation pit excavation on adjacent metro station[J]. Special Structures, 2016, 33(6):52~55. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/gcjsysj201611013
    [16] 吴薪柳.复杂基坑施工对相邻地铁车站沉降的影响分析[J].铁道工程学报, 2017, 34(2):93~97. doi: 10.3969/j.issn.1006-2106.2017.02.018

    WU Xinliu. Analysis of influence of complex foundation pit construction on the settlement of adjacent metro station[J]. Journal of Railway Engineering Society, 2017, 34(2):93~97. (in Chinese with English abstract) doi: 10.3969/j.issn.1006-2106.2017.02.018
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出版历程
  • 收稿日期:  2018-06-05
  • 修回日期:  2018-08-03
  • 刊出日期:  2018-10-01

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