A hydro-mechanical coupled method for assessing the influence of localised leakage at gasketed joints on the long-term behaviour of shield tunnels☆

被引:0
|
作者
Xie, Jiachong [1 ,2 ]
Molins, Climent [1 ]
Huang, Xin [2 ]
机构
[1] Univ Politecn Catalunya UPC, Dept Civil & Environm Engn, Barcelona 08034, Spain
[2] Tongji Univ, Coll Civil Engn, Dept Geotech Engn, Shanghai 200092, Peoples R China
基金
中国国家自然科学基金;
关键词
Shield tunnel; Localised leakage; Gasketed joint; Ageing effect; Hydro-mechanical coupling; Soil-tunnel interaction; SEALANT PERFORMANCE; SEGMENTAL JOINTS; MODEL;
D O I
10.1016/j.tust.2025.106492
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Leakage defects at gasketed joints primarily induced by joint deformation and gasket ageing pose a significant challenge to the long-term safety of shield tunnels, leading to ground consolidation and structural deterioration of tunnel lining. A novel FEM analysis method was proposed to model the hydro-mechanical coupled behaviour of the joint during the long term, comprehensively incorporating a waterproof capacity degradation model, localised leakage behaviour characterised by cubic law, and correlations between joint deformation and gasket compression. The model was then validated by a full-scale experiment on the structural behaviour and the image tunnel method on the seepage field. The influence of localised leakage on soil-tunnel interaction and the structural responses of lining over the entire service duration was assessed, considering the effects of joint deformation, double-pair gaskets, number of leakage joints, and internal water pressure. The proposed method captures the initial waterproof stage of 40 years, followed by waterproof failure and progressive hydraulic deterioration of the joint. The localised leakage leads to increases in the bending moment, long-term settlement and ovalisation deformation. The use of double-pair gaskets effectively improves the waterproof capacity of the joint, extending the waterproof stages and mitigating further hydraulic deterioration. Additionally, the leakage pattern changes with the adoption of double-pair gaskets. The influence of internal water pressure is twofold: it enlarges the joint eccentricity and opening, exacerbating the waterproof capacity degradation; however, it also counteracts groundwater infiltration by reducing the hydraulic gradient. Internal water pressure primarily reduces axial forces, while leakage is mainly responsible for changes in bending moments and lining deformation.
引用
收藏
页数:23
相关论文
共 31 条
  • [21] Hydro-mechanical response of opalinus clay in the CO2 long-term periodic injection experiment (CO2LPIE) at the Mont Terri rock laboratory
    Sciandra, Dario
    Rahimzadeh Kivi, Iman
    Vilarrasa, Victor
    Makhnenko, Roman Y.
    Rebscher, Dorothee
    GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES, 2022, 8 (05)
  • [22] Hydro-mechanical response of Opalinus Clay in the CO2 long-term periodic injection experiment (CO2LPIE) at the Mont Terri rock laboratory
    Dario Sciandra
    Iman Rahimzadeh Kivi
    Víctor Vilarrasa
    Roman Y. Makhnenko
    Dorothee Rebscher
    Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2022, 8
  • [23] Effects of Leachate Recirculation System Variables on Long-Term Bioreactor Landfill Performance Using Coupled Thermo-Hydro-Bio-mechanical Model
    Kumar, Girish
    Reddy, Krishna R.
    INTERNATIONAL JOURNAL OF GEOMECHANICS, 2021, 21 (05)
  • [24] Assessing the Long-Term Creep Behaviour of Hydrothermally Treated Japanese Cedar Wood Using the Short-Term Accelerated Stepped Isostress Method
    Xu, Jin-Wei
    Li, Cheng-Chun
    Liu, Jian-Wei
    Chang, Wen-Chao
    Chang, Wen-Shao
    Wu, Jyh-Horng
    POLYMERS, 2023, 15 (20)
  • [25] Analysis of the Long-Term-Coupled Thermo-Hydro-Mechanical Performances and the Retardation Capacities of Composite Bentonite Buffers Using a Numerical Simulation Method
    Weihan Zheng
    Tao Li
    Yufeng Gao
    Yuemiao Liu
    Xiang Zhu
    Arabian Journal for Science and Engineering, 2022, 47 : 4785 - 4800
  • [26] Analysis of the Long-Term-Coupled Thermo-Hydro-Mechanical Performances and the Retardation Capacities of Composite Bentonite Buffers Using a Numerical Simulation Method
    Zheng, Weihan
    Li, Tao
    Gao, Yufeng
    Liu, Yuemiao
    Zhu, Xiang
    ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 2022, 47 (04) : 4785 - 4800
  • [27] Impact of fracture shear dilation on long-term heat extraction in Enhanced Geothermal Systems: Insights from a fully-coupled thermo-hydro-mechanical simulation
    Zhang, Xu
    Huang, Zhaoqin
    Lei, Qinghua
    Yao, Jun
    Gong, Liang
    Sun, Zhixue
    Yang, Wendong
    Yan, Xia
    Li, Yang
    GEOTHERMICS, 2021, 96
  • [28] The Harpers THMC flow bench: A triaxial multi-reactor setup for the investigation of long-term coupled thermo-hydro-mechanical-chemical fluid-rock interaction
    Harpers, Nick
    Wen, Ming
    Miller, Paul
    Hangx, Suzanne
    Busch, Andreas
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2023, 94 (09):
  • [29] Long-Term Performance and Security of Gas Production for Horizontal-Well Depressurization Exploitation: Insights from a Coupled Thermo-Hydro-Mechanical-Chemical Model for the Shenhu Hydrate Reservoir
    Li, Peng
    Fan, Zhiqiang
    Li, Mengxin
    Zhao, Liang
    Wang, Dayong
    ENERGY & FUELS, 2023, 37 (19) : 14824 - 14835
  • [30] A method to assess the hygro-mechanical behaviour of original panel paintings, through in situ non-invasive continuous monitoring, to improve their conservation: a long-term study on the Mona Lisa
    Uzielli, Luca
    Dionisi-Vici, Paolo
    Mazzanti, Paola
    Riparbelli, Lorenzo
    Goli, Giacomo
    Mandron, Patrick
    Togni, Marco
    Gril, Joseph
    JOURNAL OF CULTURAL HERITAGE, 2022, 58 : 146 - 155