Vehicle-SFT-current coupling vibration of multi-span submerged floating tunnel, Part II: comparative analysis of finite difference method and parametric study
An analytical method based on the mode superposition and Galerkin hybrid method (MSGHM) has been proposed for vehicle-SFT-current coupling vibration in Part I of the two-part paper. This Part II also puts forward the finite difference method (FDM) for solving the differential equations of vehicle-SFT-current coupling vibration. Taking the design parameters of a typical SFT as the engineering background, the correctness of the two methods are mutually verified. Subsequently, the influences of several structural parameters on the vehicle-SFT-current coupling vibration are discussed. The results show that the peaks of displacements appear near five eighths of the tube, whereas the peaks of bending moments appear at midpoint of each segment. When the current acts on the tube with large-diameter section, the vortex-induced vibration is difficult to be excited, making the current-SFT coupling vibration inconspicuous. Moreover, the boundary condition will significantly affect the dynamic response of the side segments. The flexible segment joint can effectively decrease the negative bending moment of the tube, while the shear keys with reasonable setting will avoid the abrupt change of the displacement. Furthermore, the variation in the layout of the cable will change the anchoring stiffness, and consequently influence the displacements of the tube.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
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Supplemental Notes:
- © 2022 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Yang, Yunshen
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0000-0002-7335-4091
- Xiang, Yiqiang
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0000-0002-7353-5490
- Gao, Chaoqi
- Publication Date: 2022-4-1
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: 110951
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Serial:
- Ocean Engineering
- Volume: 249
- Issue Number: 0
- Publisher: Pergamon
- ISSN: 0029-8018
- EISSN: 1873-5258
- Serial URL: http://www.sciencedirect.com/science/journal/00298018
Subject/Index Terms
- TRT Terms: Alternatives analysis; Finite differences; Floating structures; Parametric analysis; Underwater tunnels; Vibration
- Subject Areas: Marine Transportation; Terminals and Facilities;
Filing Info
- Accession Number: 01840273
- Record Type: Publication
- Files: TRIS
- Created Date: Mar 25 2022 12:36PM