Structural damage assessment of shallow buried tunnel subjected to multiple slip surfaces and blind reverse fault: a numerical study

Abstract

Faults and fractured zones are common geological hazards in tunnel construction, especially in seismic regions where tunnels are highly vulnerable to fault movements. This study uses Urumqi Metro Line 2 as a case, establishes a new damage assessment system for tunnels crossing multiple slip surface faults. Three-dimensional nonlinear finite element models are used to analyze the effects of fault displacement magnitudes, distances between adjacent slip surfaces, and fault dip angles on tunnel lining damage. The study identifies the damage characteristics and evolution of tunnel linings under multiple fault movements, filling gaps in existing research. Lining damage is quantitatively assessed using two indicators: the damage state of the tunnel lining and the overall lining damage index. The proposed model has been verified through two methods. Results show that as fault displacement increases, lining damage progresses from the invert to the crown and sidewalls, longitudinal damage mainly occurs near the slip surface and fault-rock interface. Once the fault displacement exceeds 0.5 m, the overall lining damage index hardly changes anymore. Fault movements along narrow slip surfaces result in a cumulative effect on the lining; however, when the gap between slip surfaces exceeds 21.0 m, slight damage occurs in the central tunnel region. Tensile damage to the lining is highly sensitive to fault dip angle, with a 20.7% variation as the dip angle changes. Additionally, tunnels in the moving block experience more tensile damage than those in the fixed block. Overall, the numerical results of this study provide a better understanding of the response of tunnels under the movement of multiple slip surface faults.

Keywords

Structural damage assessment / Blind reverse fault / Slip surface / Shallow buried tunnel / Finite element simulation / Earth Sciences / Geology

References

[1] ShenY, WangZ, YuJ, ZhangX, GaoB. Shaking table test on flexible joints of mountain tunnels passing through normal fault. Tunn Undergr Space Technol, 2020, 98. 103299

[2] AnS, TaoL, HanX, ZhangY. Application of two-level design method on subway tunnel crossing active fault: a case study on Urumqi subway tunnel intersected by reverse fault dislocation. Bull Eng Geol Env, 2021, 80: 3871-3884.

[3] MaE, LaiJ, XuS, ShiX, ZhangJ, ZhongY. Failure analysis and treatments of a loess tunnel being constructed in ground fissure area. Eng Fail Anal, 2022, 134. 106034

[4] Wang T-T, Kwok O-LA and Jeng F-S (2021) Seismic response of tunnels revealed in two decades following the 1999 Chi-Chi earthquake (Mw 7.6) in Taiwan: A review. Engineering Geology 287:106090. https://doi.org/10.1016/j.enggeo.2021.106090

[5] ZhouS, TianZ, DiH, GuoP, FuL. Investigation of a loess-mudstone landslide and the induced structural damage in a high-speed railway tunnel. Bull Eng Geol Env, 2020, 79: 2201-2212.

[6] ShinT-C, TengT-l. An overview of the 1999 Chi-Chi, Taiwan, earthquake. Bull Seismol Soc Am, 2001, 915895-913.

[7] LiT. Damage to mountain tunnels related to the Wenchuan earthquake and some suggestions for aseismic tunnel construction. Bull Eng Geol Env, 2012, 71: 297-308.

[8] ZhangX, JiangY, SugimotoS. Seismic damage assessment of mountain tunnel: A case study on the Tawarayama tunnel due to the 2016 Kumamoto Earthquake. Tunn Undergr Space Technol, 2018, 71: 138-148.

[9] Chen P, Geng P, Chen J and Gu W (2023) The seismic damage mechanism of Daliang tunnel by fault dislocation during the 2022 Menyuan Ms6. 9 earthquake based on unidirectional velocity pulse input. Engineering Failure Analysis 145:107047. https://doi.org/10.1016/j.engfailanal.2023.107047

[10] CheF, YinC, ZhaoX, HuZ, ShengL, LiuD. Embankment seismic fragility assessment: A case study on Xi’an-Baoji expressway (China). PLoS ONE, 2021, 162. e0246407

[11] YuH, ChenJ, BobetA, YuanY. Damage observation and assessment of the Longxi tunnel during the Wenchuan earthquake. Tunn Undergr Space Technol, 2016, 54: 102-116.

[12] Xiang H-T and Lyu H-M (2023) Assessment of vulnerability to waterlogging in subway stations using integrated EWM-TOPSIS. Smart Construction and Sustainable Cities 1(1):17. https://doi.org/10.1007/s44268-023-00020-4

[13] ChenZ, WeiJ. Correlation between ground motion parameters and lining damage indices for mountain tunnels. Nat Hazards, 2013, 65: 1683-1702.

[14] WangW, WangT, SuJ, LinC, SengC, HuangT. Assessment of damage in mountain tunnels due to the Taiwan Chi-Chi Earthquake. Tunn Undergr Space Technol, 2001, 163133-150.

[15] ShahidiA, VafaeianM. Analysis of longitudinal profile of the tunnels in the active faulted zone and designing the flexible lining (for Koohrang-III tunnel). Tunn Undergr Space Technol, 2005, 203213-221.

[16] Yang C, Shen S-L, Hou D-W, Liao S-M and Yuan D-J (2018) Material properties of the seal gasket for shield tunnels: A review. Construction and Building Materials 191:877–890. https://doi.org/10.1007/s44268-023-00020-4

[17] RenD-J, ShenS-L, ChengW-C, ZhangN, WangZ-F. Geological formation and geo-hazards during subway construction in Guangzhou. Environmental Earth Sciences, 2016, 75: 1-14.

[18] ZengG, GengP, GuoX, LiP, WangQ, DingT. An anti-fault study of basalt fiber reinforced concrete in tunnels crossing a stick-slip fault. Soil Dyn Earthq Eng, 2021, 148. 106687

[19] YaoC, HeC, TakemuraJ, FengK, GuoD, HuangX. Active length of a continuous pipe or tunnel subjected to reverse faulting. Soil Dyn Earthq Eng, 2021, 148. 106825

[20] LinM-L, ChungC-F, JengF-S, YaoT-C. The deformation of overburden soil induced by thrust faulting and its impact on underground tunnels. Eng Geol, 2007, 923–4110-132.

[21] Qin S, Cheng Y and Zhou W-H (2023) State-of-the-art review on pressure infiltration behavior of bentonite slurry into saturated sand for TBM tunneling. Smart Construction and Sustainable Cities 1(1):14. https://doi.org/10.1007/s44268-023-00018-y

[22] RanjbarniaM, ZaheriM, DiasD. Three-dimensional finite difference analysis of shallow sprayed concrete tunnels crossing a reverse fault or a normal fault: A parametric study. Front Struct Civ Eng, 2020, 14: 998-1011.

[23] TriantafyllakiA, PapanastasiouP, LoukidisD. Numerical analysis of the structural response of unburied offshore pipelines crossing active normal and reverse faults. Soil Dyn Earthq Eng, 2020, 137. 106296

[24] SuK, ZhangY-J, ChangZ-H, WuH-G, WangT, ZhouW. Transverse extent of numerical model for deep buried tunnel excavation. Tunn Undergr Space Technol, 2019, 84: 373-380.

[25] Potts DM, Zdravković L, Addenbrooke TI, Higgins KG and Kovačević N (2001) Finite element analysis in geotechnical engineering: application. Thomas Telford London.

[26] Liang K, He Z, Jiang W, Li Y and Liu Z (2022) Surface rupture characteristics of the Menyuan Ms 6.9 earthquake on January 8. Qinghai Province. Seismology and Geology, 2022, 441256-278

[27] Bracci J, Reinhorn A, Mander J and Kunnath SK (1989) Deterministic model for seismic damage evaluation of reinforced concrete structures. National Center for Earthquake Engineering Research, Technical Report NCEER-89–0033, State University of New York at Buffalo.

[28] ShiX, FengX. Numerical assessment of the structural damage of a composite lining water conveyance tunnel subjected to reverse fault conditions. Buildings, 2022, 12101647.

[29] SidoroffFDescription of anisotropic damage application to elasticity, 1981FranceSpringer237-244

[30] ChenG, TengJ, ChenJ. Finite-element modeling of intermediate crack debonding in FRP-plated RC beams. J Compos Constr, 2011, 153339-353.

[31] China Communications Press JTG/T D70- (2010) Guidelines for design of highway tunnel.

Funding

Sponsored by Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01E32)

RIGHTS & PERMISSIONS

The Author(s)