Parallel Dynamic Analysis of a Large-Scale Water Conveyance Tunnel under Seismic Excitation Using ALE Finite-Element Method

Wang, Xiaoqing; Jin, Xu; Wang, Puyong; Yang, Zhihao

doi:10.3390/app6020036

Cited by 5 publications

(4 citation statements)

References 28 publications

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“…Lou et al [16] built a full 3D fluid-tunnelsoil coupling numerical model of a large-diameter parallel diversion tunnel and used the multimaterial ALE method to calculate the seismic response of the tunnel under the action of fluid. Wang et al [17] used the ALE method to simulate the movement and sloshing of internal water and proposed a parallel calculation method based on coupling load balance to analyze the dynamic response of a water conveyance tunnel under nonuniform seismic excitation. Although the ALE method has the unique advantages in describing the fluid motion and the fluid-structure coupling problems, the research results of its application in the seismic analysis of large-scale hydraulic tunnel are still few, and there is no widely accepted dynamic coupling analysis theory for waterlining system.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Analysis of Combined Seismic Response for Rock‐Lining‐Water in Hydraulic Tunnel

Liu

Zhang

Xiao

2021

Shock and Vibration

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In order to explore the influence of internal water on the seismic response of hydraulic tunnel, the combined mechanical analysis models of multimaterial including surrounding rock, lining structure, and internal water are built. Based on the explicit central difference method, the dynamic finite element analysis methods for rock, lining, and water are discussed, respectively. The dynamic contact force method is used to simulate the rock-lining contact interaction, and the arbitrary Lagrange-Euler (ALE) method is used to simulate the lining-water coupling interaction. Then a numerical simulation analysis method for combined seismic response of rock-lining-water system in hydraulic tunnel is proposed, and the detailed solving steps are given. This method is used to study the seismic stability characteristics of the water diversion tunnel in a hydropower station, and the displacement, stress, and damage failure characteristics of the lining structure under the conditions of no water, static water, and dynamic water are comparatively analyzed. The results show that the hydrostatic pressure restricts the seismic response of the lining, while the hydrodynamic pressure exacerbates its seismic response and leads to damage, separation, and slip failure appearing on the haunch, which can provide a scientific reference for the seismic design of hydraulic tunnel with high water head and large diameter.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation Analysis of Combined Seismic Response for Rock‐Lining‐Water in Hydraulic Tunnel

Liu

Zhang

Xiao

2021

Shock and Vibration

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“…The seismic responses of hydraulic tunnels are highly related to the fluid-solid coupling. Two basic methods are widely used to analysis to the fluid-solid coupling effects: the added mass method proposed by Westergaard et al [33] and modified by Housner et al [20] and the multimaterial Arbitrary Lagrangian Eulerian (ALE) method [34]. The added mass method is a simplified method as it does not consider the sloshing of the inner water.…”

Section: Fluid-solid Coupling Mechanismmentioning

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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“…It is well known that the SSI effect has a significant influence on the static and dynamic response of the structures [10][11][12]. Thus, the SSI effect should be properly taken into account to obtain satisfactory results.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response Analysis of Anchor Joint in Shield–Driven Tunnel Considering Soil–Structure Interaction

Zhang

et al. 2022

Applied Sciences

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The seismic behavior of the anchor joint in shield-driven tunnel is very difficult to determine with the conventional methods due to the extensive simplifications. This paper proposed an improved approach to investigate the seismic response of the anchor joint, considering both the soil-structure-interaction effect and the actual geometric features. Two three-dimensional numerical models were established, including the soil-tunnel system and the refined model of the anchor joint. A seismic analysis study was first conducted on the soil-tunnel model under different seismic input waves to obtain the responses of the joint opening and offset. Then, these results were imposed on the refined model of anchor joint to further examine its detailed performance under seismic excitations. The joint opening and offset under earthquake excitations from different directions were discussed. The distribution characteristics of the stress of the anchor joint were interpreted. Finally, safety evaluations on the anchor joint were executed based on the overall seismic responses. The results show that the maximum opening and offset of the anchor joint under the two-directional horizontal earthquake are greater than those under the unidirectional conditions, while different deformation trends are observed for the joints at distinct locations. The maximum opening of the anchor joint can reach 0.73 mm, whereas the peak offset is only 0.35 mm. The local plastic strain of the anchor joint increases under the seismic action, but all of the joints are still kept in the safe state under the most unfavorable conditions. The developed method in this paper can also be accessed by the seismic study on other types of joints with complex structural components in shield tunnels.

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Parallel Dynamic Analysis of a Large-Scale Water Conveyance Tunnel under Seismic Excitation Using ALE Finite-Element Method

Cited by 5 publications

References 28 publications

Numerical Simulation Analysis of Combined Seismic Response for Rock‐Lining‐Water in Hydraulic Tunnel

Numerical Simulation Analysis of Combined Seismic Response for Rock‐Lining‐Water in Hydraulic Tunnel

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

Seismic Response Analysis of Anchor Joint in Shield–Driven Tunnel Considering Soil–Structure Interaction

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