Research on Scour and Protection of Offshore Structures

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Oceans and Coastal Zones".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 2295

Special Issue Editors


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Guest Editor
College of Engineering, Ocean University of China, Qingdao 266000, China
Interests: scour mechanism; scour protection; scour monitoring; offshore wind power foundation; subsea pipeline; offshore structures
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Guest Editor
Department of Geotechnical Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
Interests: offshore pile foundation; geotechnical earthquake engineering; soft soil engineering; deep-water foundation; scour and erosion
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210024, China
Interests: scour; scour protection; flow fields; turbulence; PIV; physical modelling

Special Issue Information

Dear Colleagues,

Scour of sediments around offshore structures by wave currents is the most important factor contributing to the failure of offshore structures. Scour of offshore structures leads to human fatalities and economic losses every year. Most of the research on scour mechanisms has been carried out for current and sediment environments. However, the seabed soil is constantly liquefied and re-consolidated in the complex marine environment, resulting in continuous changes in the properties of the seabed soil. In the previous scour studies, fewer studies involved the properties of the seabed soil. Moreover, in complex hydrodynamic and soil environments, the traditional scour protections have various drawbacks and cannot be effective for a long time. Therefore, revealing the scouring mechanism under the coupling of seabed soil, sediment, and wave–current are crucial for the design and protection of offshore structures.

In this Special Issue, we invite submissions of research on scour mechanisms and scour protection methods for offshore hydraulic structures, in order to solve the scour problems under the complex water–solid–soil interaction and to develop effective scour protection methods. This Special Issue will cover research on scour macroscopic mechanisms, scour protection methods, scour model tests, and numerical simulations of scour for offshore structures. As well as new findings, new methods, new tools, or improved models for other studies of water–soil systems in the ocean are welcome.

Prof. Dr. Xuguang Chen
Prof. Dr. Fayun Liang
Prof. Dr. Dawei Guan
Guest Editors

Manuscript Submission Information

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Keywords

  • scour mechanism
  • scour protection
  • scour test
  • offshore wind power
  • offshore structures
  • subsea pipeline

Published Papers (1 paper)

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Research

8 pages, 1247 KiB  
Article
Scour at a Submerged Square Pile in Various Flow Depths under Steady Flow
by Shengtao Du, Guoxiang Wu, Bingchen Liang, David Z. Zhu and Risheng Wang
Water 2022, 14(13), 2034; https://doi.org/10.3390/w14132034 - 25 Jun 2022
Cited by 1 | Viewed by 1597
Abstract
Local scour around submerged piles in currents are common in coastal and offshore engineering. This paper studies the influences of the submergence ratio (flow depth to pile height) on local scour around a square pile in steady flow. Submergence ratio ranging from 1–4, [...] Read more.
Local scour around submerged piles in currents are common in coastal and offshore engineering. This paper studies the influences of the submergence ratio (flow depth to pile height) on local scour around a square pile in steady flow. Submergence ratio ranging from 1–4, as well as two unsubmerged tests, were tested with a 10 × 10 square pile of 20 cm height. The three-dimensional profiles were measured to study the scour and deposition characteristics. Results show that the maximum scour depth was always at the upstream corner points rather than at the symmetry center point of the pile. The temporal maximum scour depth achieved its equilibrium sate in less than 4 h for each test. The equilibrium scour depths at the upstream corner points were independent of the submergence ratio when the latter was larger than 1.5. These findings give meaningful reference to the numerical simulations and local scour depth protections in the submerged pile cases deeper than which the flow depth does not affect the equilibrium scour depth. Full article
(This article belongs to the Special Issue Research on Scour and Protection of Offshore Structures)
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