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

作　　者：Woo Chul Chung Chungkuk Jin Moo Hyun Kim Ju-young Hwang 

机构地区：[1]Division of Mechanical Engineering,Korea Maritime&Ocean University,Busan,South Korea [2]Department of Ocean Engineering and Marine Sciences,Florida Institute of Technology,Melbourne,FL,USA [3]Department of Ocean Engineering,Texas A&M University,College Station,TX,USA [4]Department of Civil Engineering,Dong-Eui University,Busan,South Korea

出　　处：《Computer Modeling in Engineering & Sciences》2023年第10期155-174,共20页工程与科学中的计算机建模（英文）

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by the Korea Government(MSIT)(No.2017R1A5A1014883).

摘　　要：This paper presents dynamic-behavior comparisons and related forensic analyses of a submerged floating tunnel(SFT)between numerical simulation and physical experiment under regular and irregular waves.The experiments are conducted in the 3Dwave tank with 1:33.3 scale,and the corresponding coupled time-domain simulation tool is devised for comparison.The entire SFT systemconsists of a long concrete tunnel and 12 tubular aluminummooring lines.Two numerical simulation models,the Cummins equation with 3D potential theory including second-order wave-body interaction effects and the much simpler Morison-equation-based formula with the lumped-massbased line model,are designed and compared.Forensic analyses for mooring-line adjustments in the simulation are carried out in view of the best representation of the physical system.After that,the measured pre-tension distribution and systemstiffness of twelvemooring lines arewell reproduced in the numericalmodel.Subsequently,the dynamic responses and mooring tensions of the SFT are compared under regular and irregular waves.The measured and simulated results coincide reasonably well for both regular-and irregular-wave conditions.

关 键 词：Submerged floating tunnel comparative study forensic analysis mooring-line modeling dynamic response mooring tension 

分 类 号：O313[理学—一般力学与力学基础]