Seismic damage mechanism and dynamic deformation characteristic analysis of mountain tunnel after Wenchuan earthquake

Shen, Yusheng; Gao, Bo; Yang, Xiaoming; Shuangjiang, Tao

doi:10.1016/j.enggeo.2014.07.017

Cited by 230 publications

(65 citation statements)

References 9 publications

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“…Generally, tunnels in seismically active areas cannot avoid the earthquake-induced risks. Several strong earthquake events, such as the 1999 Chi-Chi Earthquake [1], the 1999 Turkey Koceali Earthquake [2], the 2004 Mid-Niigata Prefecture Earthquake [3,4], and the 2008 Wenchuan Earthquake [5][6][7], demonstrated that those tunnels may suffer different levels of seismic damage, ranging from lightly cracking to severely collapse. Therefore, the seismic stability of the tunnels in seismically active areas becomes an important engineering problem and arouses much attention [8].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Seismic Response of a Hydraulic Tunnel Considering Fluid-Solid Coupling

Lyu

et al. 2018

Mathematical Problems in Engineering

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The seismic response of hydraulic tunnels is a complex nonlinear process. What makes the case even more interesting is that the large amount of water in hydraulic tunnels which is likely to induce considerable hydrodynamic pressure acted on tunnel structures during earthquakes. In this work, a full three-dimensional (3D) dynamic finite element model is adopted to conduct a comprehensive assessment of the seismic behaviors of a hydraulic tunnel system. In this analysis, the plastic-damage model is employed to reflect the nonlinear mechanical behaviors of the concrete lining, and a fluid-solid coupling method based on an explicit weighted residual approach is proposed to consider the effects of the hydrodynamic pressures on the seismic response of the hydraulic tunnel. The numerical results indicate that the hydrodynamic pressure contributes to a greater seismic response of the tunnel structure. When the hydrodynamic pressure is considered, the magnitudes of the maximum principal stresses are likely to increase by 50% and the displacement amplitudes are approximately 2 cm more than that of without hydrodynamic pressure. The hydrodynamic pressure exacerbates the damage degree of the tunnel structure, and the waist suffers the most severe damage.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Seismic Response of a Hydraulic Tunnel Considering Fluid-Solid Coupling

Lyu

et al. 2018

Mathematical Problems in Engineering

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“…Recent strong earthquake events, including Chile 2010 and Tohoku 2011, among others, have shown that road network damage and traffic disruptions may substantially impair emergency response, rescue and recovery [1], [2]. At the same time, several cases have been reported wherein even minor damage to key network components had a disproportionally significant impact to the total amount of earthquake-induced loss.…”

Section: Introductionmentioning

confidence: 99%

Seismic Resilience Assessment of the Western Macedonia Highway Network in Greece

Sextos¹,

Kilanitis

Kappos

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Retis-Risk is a comprehensive framework recently developed for the assessment and management of the seismic resilience of interurban roadway networks. In this paper, this framework is applied for the road network of the prefecture of Western Macedonia in Greece. Refined data concerning real traffic conditions and network topology were collected and a detailed network mapping was performed in GIS. Utilizing an ad-hoc developed software for implementing the holistic methodology, the as-built road network was assessed and the network components with the highest vulnerability and consequence were identified. To improve the loss assessment reliability, bridge-specific fragility curves were employed based on the refined FE modeling. Structural and traffic cost due to earthquake scenarios of different return period were then predicted. To identify effective loss mitigation measures, the whole process was repeated assuming two different pre-earthquake risk management strategies. The first one concerns a retrofit program tailored to selected (i.e., the most critical) network components, while the second one focuses on the beneficial effect of a better recovery planning. Results indicate the significant contribution of an effective risk management to the loss mitigation and network resilience improvement. Moreover, a sustainable health monitoring system was installed on Polymylos bridge to ensure satellite data transmission during an earthquake event to update the postearthquake recovery model, nearly in real time, with the measured spectral acceleration of the superstructure. The results indicate that the road network is adequately resilient, primarily due to its newly constructed infrastructure and its compliance to modern seismic standards. However, it consists an interesting application case demonstrating the applicability of the methodology and the major potential benefits of a holistic resilience-based management for the case similar intercity highway networks.

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“…And tunnels in Sichuan Province experienced serious damage in the Wenchuan earthquake in 2008 [2]. Hence, it is a very important issue to protect underground structures from seismic impact.…”

Section: Introductionmentioning

confidence: 99%

Detailed Simulation of the Shaft Ingate of a Shield Tunnel Under Seismic Impact

Zhang¹,

Meng²,

Tu³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Seismic damage mechanism and dynamic deformation characteristic analysis of mountain tunnel after Wenchuan earthquake

Cited by 230 publications

References 9 publications

Nonlinear Seismic Response of a Hydraulic Tunnel Considering Fluid-Solid Coupling

Nonlinear Seismic Response of a Hydraulic Tunnel Considering Fluid-Solid Coupling

Seismic Resilience Assessment of the Western Macedonia Highway Network in Greece

Detailed Simulation of the Shaft Ingate of a Shield Tunnel Under Seismic Impact

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