• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
  • Scopus数据库收录期刊

地基沉降对沉管隧道节段接头剪力键力学性能影响研究

刘禹阳, 谢永利, 来弘鹏, 张宏光

刘禹阳, 谢永利, 来弘鹏, 张宏光. 地基沉降对沉管隧道节段接头剪力键力学性能影响研究[J]. 岩土工程学报, 2015, 37(12): 2235-2244. DOI: 10.11779/CJGE201512013
引用本文: 刘禹阳, 谢永利, 来弘鹏, 张宏光. 地基沉降对沉管隧道节段接头剪力键力学性能影响研究[J]. 岩土工程学报, 2015, 37(12): 2235-2244. DOI: 10.11779/CJGE201512013
LIU Yu-yang, XIE Yong-li, LAI Hong-peng, ZHANG Hong-guang. Influence of foundation settlement on mechanical performance of shear keys of segment joints in immersed tube tunnels[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(12): 2235-2244. DOI: 10.11779/CJGE201512013
Citation: LIU Yu-yang, XIE Yong-li, LAI Hong-peng, ZHANG Hong-guang. Influence of foundation settlement on mechanical performance of shear keys of segment joints in immersed tube tunnels[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(12): 2235-2244. DOI: 10.11779/CJGE201512013

地基沉降对沉管隧道节段接头剪力键力学性能影响研究  English Version

基金项目: 国家科技支撑计划项目(2011BAG07B00); 国家自然科学; 基金项目(51008029,51378071); 陕西省科学技术研究发展计划项目; (2014KJXX-53); 陕西省自然科学基金项目(2013JQ7030)
详细信息
    作者简介:

    刘禹阳(1989- ),男,陕西宝鸡人,博士研究生,主要从事公路隧道结构方面研究。E-mail: liuyuyang19891117@yeah.net。

Influence of foundation settlement on mechanical performance of shear keys of segment joints in immersed tube tunnels

  • 摘要: 为了更全面地了解地基沉降对沉管隧道节段接头剪力键力学性能影响情况,以港珠澳沉管隧道工程为背景,系统开展了两种不同沉降工况下几何相似比为1∶4.69的大型模型试验,并利用有限元对实际沉管节段进行数值模拟,研究了地基沉降下节段接头剪力键力学性状和剪力的分布情况。试验结果表明:剪力键应力变化主要影响因素为地基沉降,接头内剪力键的空间组合对应力影响不明显;地基沉降过程中,水平剪力键应力值相对较小;中墙剪力键下部端角先于侧墙剪力键下部端角与剪力键槽挤压,且前者量值大于后者,中墙剪力键下部端角最先受压破坏;接头内剪力键根部剪力分布与剪力键布设方向关系紧密,节段横断面一侧地基下沉对另一侧节段产生横拉效应;同时提出了接头内最大剪力与地基沉降关系方程和各竖向剪力键的竖向剪力承担比例。
    Abstract: In order to have a more comprehensive understanding of the influence of foundation settlement on mechanical performance of shear keys of segment joints in immersed tube tunnels, based on the5 immersed tube tunnel project of Hong Kong-Zhuhai-Macao Bridge, large-scare model tests with geometric similarity ratio of 1∶4.69 under two different settlement working conditions are systematically carried out. A finite element numerical simulation on segments of the real immersed tube tunnel is made simultaneously. The mechanical properties of shear key of segment joints and the distribution of shear force are studied. The experimental results show that: (1) The dominant influence on change of stress in the shear keys is induced by the foundation settlement. (2) In the process of foundation settlement, the stress value of the horizontal shear keys is relatively small; (3) The lower end of the angle of shear keys in middle walls is compressed earlier than the same position in side walls, and the former is larger than the latter one in the value of stress, so the shear keys in the middle wall is crushed firstly; (4) The deformation trend of vertical shear keys is that the lower part is being compressed and the upper part is moving apart with shear key trough, the shear force distribution of the roots of shear keys among a joint relates closely with the setting position of shear keys, and in a cross section the foundation subsidence at one side leads to horizontal pull effect on the linings of immersed tube at the other side; (5) The equations for the maximum shear force and foundation settlement in a joint are put forward as well as the vertical shear ratio among the vertical shear force in the joint.
  • [1] 丁文其, 朱 令, 彭益成, 等. 基于地层-结构法的沉管隧道三维数值分析[J]. 岩土工程学报, 2013, 35(增刊2): 622-626. (DING Wen-qi, ZHU Ling, PENG Yi-cheng, et al. 3D numerical analysis of immersed tunnels based on stratum-structure method[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(S2): 622-626. (in Chinese))
    [2] 魏 纲, 朱昕光, 苏勤卫. 沉管隧道竖向不均匀沉降的计算方法及分布研究[J]. 现代隧道技术, 2013, 50(6): 58-65. (WEI Gang, ZHU Xin-guang, SU Qin-wei. Calculation and distribution of vertical differential settlementin immersed tunnels[J]. Modern Tunneling Tecnology, 2013, 50(6): 58-65. (in Chinese))
    [3] ANASTASOPOULOS I, GEROLYMOS N, DROSOS V, et al. Behaviour of deep immersed tunnel under combined normal fault rupture deformation and subsequent seismic shaking[J]. Bulletin of Earthquake Engineering, 2008, 6 (2): 213-239.
    [4] THOMAS K, ALBRECHT L, SUNE Y, et al. Probabilistic differential settlement design for direct foundations of the HZM link immersed tunnel[J]. Electronic Journal of Geotechnical Engineering, 2013, 18: 1459-1476.
    [5] 刘 鹏, 丁文其, 杨 波. 沉管隧道接头刚度模型研究[J]. 岩土工程学报, 2013, 35(增刊2): 133-139. (LIU Peng, DING Wen-qi, YANG Bo. Model for stiffness of joints of immersed tube tunnel[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(S2): 133-139. (in Chinese))
    [6] 刘 鹏, 丁文其, 金跃郎, 等. 沉管隧道接头三维非线性刚度力学模型[J]. 同济大学学报(自然科学版), 2014, 42(2): 232-237. (LIU Peng, DING Wen-qi, JIN Yue-lang, et al. Three-dimension nonlinear stiffness mechanical model of immersed tunnel joints[J]. Journal of Tongji University (Natural Science), 2014, 42(2): 232-237. (in Chinese))
    [7] 刘建飞, 贺维国, 曾进群. 静力作用下沉管隧道三维数值模拟[J]. 现代隧道技术, 2007, 44(1): 5-9. (LIU Jian-fei, HE Wei-guo, ZENG Jin-qun. Three-dimensional simulation for the behavior of immersed tube tunnels[J]. Modern Tunneling Technology, 2007, 44(1): 5-9. (in Chinese))
    [8] DING Jun-hong, JIN Xian-long, GUO Yi-zhi, et al. Numerical simulation for large-scale seismic response analysis of immersed tunnel[J]. Engineering Structures, 2006, 28(10): 1367-1377.
    [9] 唐 英, 管敏鑫, 万晓燕. 沉管隧道接头的理论分析及研究[J]. 中国铁道科学, 2002, 23(1): 69-74. (TANG Ying, GUAN Min-xin, WAN Xiao-yan. The analysis and study of rail joints in immersed tunnel[J]. China Railway Science, 2002, 23(1): 69-74. (in Chinese))
    [10] 陈 越. 港珠澳大桥岛隧工程建造技术综述[J]. 施工技术, 2013, 42(9): 1-5. (CHEN Yue. Review on construction technology of tunnel and artificial islands for Hongkong- Zhuhai-Macao bridge[J]. Construction Technology, 2013, 42(9): 1-5. (in Chinese))
    [11] 李金玉, 徐文雨, 曹建国, 等. 100 m深地下防渗墙高强低弹性模量墙体材料的开发及生产性试验研究[J]. 混凝土与水泥制品, 2002(1): 39-41. (LI Jin-yu, XU Wen-yu, CAO Jian-guo, et al. The Experiment research on development and productive of high strength low elastic modulus diaphragm wall materials in 100 m deep underground[J]. China Concrete and Cement Products, 2002(1): 39-41. (in Chinese))
    [12] 潘 超, 冯仲齐, 陈 凯. 低弹性模量聚丙烯纤维混凝土本构模型及力学性能研究[J]. 混凝土与水泥制品, 2011(5): 36-39. (FAN Chao, FENG Zhong-qi, CHEN Kai. Research on low elastic modulus polypropylene fiber concrete constitutive model and the mechanical properties[J]. China Concrete and Cement Products, 2011(5): 36-39. (in Chinese))
    [13] 华伟南, 刘成栋. 坝体低弹性模量混凝土防渗墙最优配合比研究[J]. 水利规划与设计, 2010(6): 58-60. (HUA Nan-Wei, LIU Cheng-dong. Research on the optimal mixing proportion of low elastic modulus concrete about dam diaphragm wall[J]. Water Conservancy Planning and Design, 2010(6): 58-60. (in Chinese))
    [14] 刘正根, 黄宏伟, 张冬梅. 沉管隧道接头三维非线性数值模拟[J]. 地下空间与工程学报, 2011, 7(4): 691-694. (LIU Zheng-gen, HUANG Hong-wei, ZHANG Dong-mei. 3D nonlinear numerical simulation on immersed tunnel joint[J]. Chinese Journal of Underground Space and Engineering, 2011, 7(4): 691-694. (in Chinese))
计量
  • 文章访问数:  334
  • HTML全文浏览量:  4
  • PDF下载量:  365
  • 被引次数: 0
出版历程
  • 收稿日期:  2014-12-10
  • 发布日期:  2015-12-19

目录

    /

    返回文章
    返回