Vibration of submerged floating tunnels due to moving loads

Tariverdilo, S.; Mirzapour, Jamil; Shahmardani, Mahdieh; Shabani, Rasoul; Gheyretmand, C.

doi:10.1016/j.apm.2011.04.038

Cited by 53 publications

(9 citation statements)

References 13 publications

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“…Nevertheless, the proposed methodology based on finite element simulations is applicable to a SFT under any loading scenarios, even though the optimized BWR can vary due to the additional loads induced at the stages of installation and operation [35,36]. If the applied loads are unexpected, some technical measures [37] should be taken at the operation stage to adjust the SFT buoyancy and maintain a reasonably optimized dynamic response.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Feasibility study on buoyancy–weight ratios of a submerged floating tunnel prototype subjected to hydrodynamic loads

Long

Hong

2015

Acta Mech. Sin.

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The research progress of a novel traffic solution, a submerged floating tunnel (SFT), is reviewed in terms of a study approach and loading scenario. Among existing publications, the buoyancy-weight ratio (BWR) is usually predefined. However, BWR is a critical structural parameter that tremendously affects the dynamic behaviour of not only the tunnel tube itself but also the cable system. In the context of a SFT prototype (SFTP) project in Qiandao Lake (Zhejiang Province, China), the importance of BWR is illustrated by finite element analysis and subsequently, an optimized BWR is proposed within a reasonable range in the present study. In the numerical model, structural damping is identified to be of importance. Rayleigh damping and the corresponding Rayleigh coefficients are attained through a sensitivity study, which shows that the adopted damping ratios are fairly suitable for SFTP. Lastly, the human sense of security is considered by quantifying the comfort index, which helps further optimize BWR in the SFTP structural parameter design.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Feasibility study on buoyancy–weight ratios of a submerged floating tunnel prototype subjected to hydrodynamic loads

Long

Hong

2015

Acta Mech. Sin.

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“…Figure 3 is the model's cutaway view. e water was modeled by SPH, where the diameter of the SPH particles was set to 1 m. e boundary of the water model and the entire model were considered as the radiation boundary, which came from the SFT suspended in the sea and usually corresponded to the sea surface [24]. e whole model was built using HyperMesh.…”

Section: Calculation Model and Parametersmentioning

confidence: 99%

Response Analysis of Submerged Floating Tunnel Hit by Submarine Based on Smoothed‐Particle Hydrodynamics

Luo

Pan

Zhang

et al. 2019

Shock and Vibration

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This paper presents the theoretical investigation on the damage of the submerged floating tunnel (SFT) under extreme loads. Water was modeled by smoothed-particle hydrodynamics (SPH). Anchor cables, SFT, and submarine were modeled by the finite element method (FEM). Penetrating phenomenon in the calculation process was achieved by the penalty function, and the fluid-solid coupling effect was also considered in the simulation. The process of a submarine striking on the SFT was studied based on the commercial software. The relationships between the energy of the water, submarine, and SFT were studied. The structural and human damages were evaluated using the kinematics and kinetic parameters of the SFT according to the relevant criterion. The results indicate that the SPH-FEM coupling method is suitable to investigate the impact of the SFT in the water. The initial kinetic energy of the submarine is mainly converted into kinetic energy of the water and internal energy of the tunnel. The kinematic parameters at the impact point reach a peak value. The kinematic parameters at the anchor cables reach the minimum value, so the anchor cables can inhibit the development of disaster significantly. The SPH-FEM coupling method can be helpful for collision and explosion analysis of the SFT.

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“…Di Pilato et al [ 3 ] chose Messina channel SFT as the research object, considering the coupling vibration effect of pipe body and anchor cable, and studied its nonlinear time-history response under the action of steady flow and wind-induced waves, as well as the local dynamic behavior of anchor cable under the action of earthquake. Tariverdilo et al [ 4 ] established two-dimensional and three-dimensional models to simulate the dynamic response of suspended tunnel under moving load, considering the inertia effect of fluid. The results showed that the response values of the two models and their differences gradually decreased with the increase of tension leg stiffness.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of Deep Water Highway Tunnel under Ocean Current

Fang

2022

Computational Intelligence and Neuroscience

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Comprehensively comparing the merits and demerits of the existing means of transportation across the water, a new underwater transportation structure for crossing the wide water area, named as “deep water highway tunnel” (hereinafter called “DWHT”), is proposed. The characteristics of flow field around the typical section of DWHT at different flow velocities are investigated, which can provide reference for the values of hydrodynamic coefficient at high Reynolds number. The vibration modes and natural by the sound-solid coupling method. In addition, considering the factors of fluid-structure coupling, the dynamic response of displacement and internal force is analyzed based on CFD for the weak parts of the structure. The results show that the deepening of water and the increase of flow will significantly increase the flow field pressure and structure stress, and when the span (or width-span ratio) of the tunnel body extends beyond a certain range, the dynamic characteristics and dynamic response rules of the structure will change.

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Vibration of submerged floating tunnels due to moving loads

Cited by 53 publications

References 13 publications

Feasibility study on buoyancy–weight ratios of a submerged floating tunnel prototype subjected to hydrodynamic loads

Feasibility study on buoyancy–weight ratios of a submerged floating tunnel prototype subjected to hydrodynamic loads

Response Analysis of Submerged Floating Tunnel Hit by Submarine Based on Smoothed‐Particle Hydrodynamics

Dynamic Analysis of Deep Water Highway Tunnel under Ocean Current

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