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[期刊论文]

A 2D non-water substructure model in time domain for breakwater-water-bedrock (layered) system excited by inclined seismic waves

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author:

Zhao, Mi (Zhao, Mi.) [1] | Su, Chengkun (Su, Chengkun.) [2] | Wang, Piguang (Wang, Piguang.) [3] | Unfold

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EI

Abstract:

The coastal structures, such as breakwaters and reefs, are usually vulnerable to the strong earthquake waves propagating through their bedrock foundation. This study proposes a 2D non-water substructure model in time domain for breakwater-water-bedrock (layered) (BWB) system, where the fluid-solid dynamic interaction is embodied by added mass and the equivalent seismic loading calculated from ocean free-field (without structure) accomplishes the inclined incidence of P or SV wave with any angle. Besides, the cutoff boundaries of the fluid are applied exact absorbing boundary conditions (ABCs) to simulate the far-field of water while the viscous-spring ABCs are employed to simulate the far-field of bedrock. Then, the accuracy of substructure method is verified by some numerical examples. However, the exact added mass matrix is fully populated and not easy to use for general software. Therefore, the simplified added mass models for water-bedrock system, water-structure system and BWB system are furtherly developed, including the relevant simplified formulas fitted by curve fitting method. Additionally, the numerical results indicate the good effectiveness of proposed model. © 2022 Elsevier Ltd

Keyword:

Breakwaters Curve fitting Earthquakes Numerical methods Time domain analysis

Community:

  • [ 1 ] [Zhao, Mi]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Su, Chengkun]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Wang, Piguang]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Song, Xiehong]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Zhang, Chao]College of Civil Engineering, Fuzhou University, Fuzhou; 350108, China

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Source :

Ocean Engineering

ISSN: 0029-8018

Year: 2022

Volume: 262

5 . 0

JCR@2022

4 . 6 0 0

JCR@2023

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

30 Days PV: 1

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