4.7 Article

Dynamics of a moored submerged floating tunnel under tsunami waves

Related references

Note: Only part of the references are listed.
Review Engineering, Ocean

A review of research on tether-type submerged floating tunnels

Wanhai Xu et al.

Summary: Submerged floating tunnels (SFTs) are considered the most promising form of transportation architecture for future water crossings due to their advantages over bridges and immersed tunnels. However, there are significant technical difficulties in designing and constructing SFTs, leading to no actual construction of such tunnels. This paper reviews the progress in the research on tethered SFTs, discussing critical issues such as design, dynamic characteristics, safety evaluation, and vibration control. It highlights the need to establish specific guidelines for SFTs and study their complete dynamic behavior, as well as the lack of knowledge regarding the progressive collapse and failure mechanisms of these structures.

APPLIED OCEAN RESEARCH (2023)

Article Engineering, Civil

Discrete-module-beam-based hydro-elasticity simulations for moored submerged floating tunnel under regular and random wave excitations

Chungkuk Jin et al.

Summary: This study investigates the hydro-elastic behaviors of a moored submerged floating tunnel (SFT) using a fully-coupled time-domain hydro-elastic model based on the discrete-module-beam (DMB) method. The effects of various design parameters on dynamic responses and mooring tensions are evaluated, and the effects of nonlinear snap loadings and first- and second-order wave forces on SFT dynamics in regular and random waves are also investigated. Wet natural frequencies and mode shapes, hydro-elastic lateral and vertical displacements, mooring tensions, and bending moments for various cases are presented and analyzed.

ENGINEERING STRUCTURES (2023)

Article Engineering, Multidisciplinary

Comparison Study and Forensic Analysis between Experiment and Coupled Dynamics Simulation for Submerged Floating Tunnel Segment with Free Ends under Wave Excitations

Woo Chul Chung et al.

Summary: This paper compares the dynamic behavior of a submerged floating tunnel (SFT) between numerical simulation and physical experiment under regular and irregular waves. The experiments are conducted in a 3D wave tank, and the corresponding simulation tool is devised for comparison. Forensic analyses for mooring-line adjustments in the simulation are carried out to best represent the physical system. The measured and simulated results coincide reasonably well for both regular- and irregular-wave conditions.

CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES (2023)

Article Engineering, Civil

Response of a submerged floating tunnel subject to flow-induced vibration

P. X. Zou et al.

Summary: A one-way fluid-structure interaction (FSI) model with multi-scale hydrodynamic solvers and finite element method (FEM) was established to assess the dynamic performance of a submerged floating tunnel (SFT) under flow-induced vibration (FIV) conditions in practical engineering applications. The study focused on analyzing the FIV of SFTs with different cross-section shapes and found that wave conditions dominated the FIV of the SFT tube. It was also observed that extreme events resulted in standing and traveling wave patterns as well as multi-mode response. The adoption of a parametric cross-section effectively reduced the hydrodynamic forcing and structural dynamic response of the SFT.

ENGINEERING STRUCTURES (2022)

Article Mechanics

Interaction between solitary waves and a combined structure of two concentric asymmetric porous arc walls

Zhenfeng Zhai et al.

Summary: An analytical model based on the linear potential flow theory is developed to study the diffraction problem of solitary wave interaction with a combined structure of two thin concentric asymmetric porous arc walls. The results show that dual-arc walls provide more significant protection than single walls, and cross-placed arc walls offer better protection.

PHYSICS OF FLUIDS (2022)

Article Engineering, Marine

Time-domain coupled dynamic simulation for SFT-mooring-train interaction in waves and earthquakes

Chungkuk Jin et al.

Summary: This study investigates the dynamic and hydro-elastic interactions of Submerged Floating Tunnel (SFT)-mooring-train coupled dynamics under wave and earthquake excitations. The SFT and train dynamics are modeled and simulated, with a focus on earthquake-induced responses and the effects of various parameters on the system. Results show that earthquake-induced motions are more significant compared to train-induced motions, with factors such as soil conditions, seismic-wave propagation, and structural damping playing important roles in the dynamic responses. Additionally, the study evaluates the derailment and offload factors and riding-comfort criterion for different train speeds in relation to the tunnel and train designs.

MARINE STRUCTURES (2021)

Article Engineering, Marine

Dynamic response of submerged floating tunnels with dual sections under irregular waves

Deokhee Won et al.

Summary: This study proposed a type of submerged floating tunnel with a dual section and investigated its hydrodynamic behavior using an analytical method. The finite element analysis technique was verified by comparison with previous hydraulic test results. The resistance characteristics under waves and currents were found to be very different according to the two proposed mooring methods.

OCEAN ENGINEERING (2021)

Article Engineering, Marine

The impacts of internal solitary waves on a submerged floating tunnel

P. X. Zou et al.

Summary: This study numerically investigates the interaction between an oceanic internal solitary wave and a prototype submerged floating tunnel, finding that the relative distance and cross-sectional shape significantly impact the system, and using a specific cross-sectional design can effectively reduce the ISW-induced force.

OCEAN ENGINEERING (2021)

Article Mechanics

Solitary-wave loads on a three-dimensional submerged horizontal plate: Numerical computations and comparison with experiments

Tian Geng et al.

Summary: In this study, a parallelized three-dimensional boundary element method is employed to simulate the interaction between an incoming solitary wave and a submerged horizontal plate. The numerical results are in good agreement with the experimental results, showing that the model successfully captures the main features of the interaction between nonlinear waves and the plate.

PHYSICS OF FLUIDS (2021)

Article Engineering, Multidisciplinary

The Effect of Key Design Parameters on the Global Performance of Submerged Floating Tunnel under Target Wave and Earthquake Excitations

Chungkuk Jin et al.

Summary: This study presents a practical design strategy for a large-size Submerged Floating Tunnel (SFT) under different target environments, considering the importance of both static and dynamic tensions. The Buoyancy-Weight Ratio and tunnel length play a crucial role in reducing maximum mooring tension and extending tunnel length, while dynamic tension becomes significant in harsh environmental conditions.

CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES (2021)

Article Engineering, Ocean

Tunnel-mooring-train coupled dynamic analysis for submerged floating tunnel under wave excitations

Chungkuk Jin et al.

APPLIED OCEAN RESEARCH (2020)

Article Engineering, Marine

Interaction of a Solitary Wave with Vertical Fully/Partially Submerged Circular Cylinders with/without a Hollow Zone

Chih-Hua Chang

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2020)

Article Chemistry, Multidisciplinary

Hydrodynamic Behavior of Submerged Floating Tunnels with Suspension Cables and Towers under Irregular Waves

Deokhee Won et al.

APPLIED SCIENCES-BASEL (2019)

Article Engineering, Civil

Numerical prediction of solitary wave forces on a typical coastal bridge deck with girders

Guoji Xu et al.

STRUCTURE AND INFRASTRUCTURE ENGINEERING (2017)

Article Engineering, Marine

Numerical analysis of tsunami-like wave impact on horizontal cylinders

K. Qu et al.

OCEAN ENGINEERING (2017)

Article Chemistry, Multidisciplinary

Performance Evaluation of Submerged Floating Tunnel Subjected to Hydrodynamic and Seismic Excitations

Naik Muhammad et al.

APPLIED SCIENCES-BASEL (2017)

Article Engineering, Civil

Numerical simulation of tsunami-scale wave boundary layers

Isaac A. Williams et al.

COASTAL ENGINEERING (2016)

Article Engineering, Civil

Tsunami generation in a large scale experimental facility

Stefan Schimmels et al.

COASTAL ENGINEERING (2016)

Article Engineering, Multidisciplinary

Interactions of fully nonlinear solitary wave with a freely floating vertical cylinder

B. Z. Zhou et al.

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS (2016)

Article Engineering, Marine

Seismic behaviors of a floating submerged tunnel with a rectangular cross-section

Jin Ho Lee et al.

OCEAN ENGINEERING (2016)

Article Engineering, Ocean

Numerical modeling of internal waves within a coupled analysis framework and their influence on spar platforms

Nishu V. Kurup et al.

OCEAN SYSTEMS ENGINEERING-AN INTERNATIONAL JOURNAL (2015)

Article Oceanography

On the runup of long waves on a plane beach

I-Chi Chan et al.

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (2012)

Article Engineering, Marine

Initial attack of large-scaled tsunami on ship motions and mooring loads

Sakakibara Shigeki et al.

OCEAN ENGINEERING (2009)

Article Engineering, Civil

Numerical models for the dynamic response of submerged floating tunnels under seismic loading

Mariagrazia Di Pilato et al.

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS (2008)

Article Engineering, Civil

3D dynamic response of submerged floating tunnels under seismic and hydrodynamic excitation

M. Di Pilato et al.

ENGINEERING STRUCTURES (2008)