Results 11 to 20 of about 61,870 (307)

Large-scale experimental study on scour around offshore wind monopiles under irregular waves

Water Science and Engineering, 2022
The Keulegan-Carpenter (KC) number is the main dimensionless parameter that affects the local scour of offshore wind power monopile foundations. This study conducted large-scale (1:13) physical model tests to study the local scour shape, equilibrium ...
Song-gui Chen, En-yu Gong, Xu Zhao, Taro Arikawa, Xin Chen   +4 more
doaj   +1 more source

Electromagnetic Sensors for Underwater Scour Monitoring

Sensors, 2020
Scour jeopardises the safety of many civil engineering structures with foundations in riverbeds and it is the leading cause for the collapse of bridges worldwide.
Andrea Maroni, Enrico Tubaldi, Neil Ferguson, Alessandro Tarantino, Hazel McDonald, Daniele Zonta   +5 more
doaj   +1 more source

Visualization Tests on Variation of Scour Front under a Pipeline in Steady Currents

Journal of Marine Science and Engineering, 2019
The intersection of the span shoulder and the scour hole under a pipeline, also called the scour front, can affect the scour hole extension rate and the bearing capacity of the span shoulder, which is associated with pipeline spanning and failure ...
Liquan Xie, Yehui Zhu, Tsung-Chow Su
doaj   +1 more source

Numerical modelling of erosion and sedimentation around offshore pipelines [PDF]

, 1990
In this paper a numerical model is presented for the description of the erosion and sedimentation near pipelines on the sea bottom. The model is based on the Navier-Stokes equations and the equation of motion and continuity of sediment.\ud \ud The ...
Beek, F.A. van, Wind, H.G.
core   +3 more sources

Extremes in dune preservation: controls on the completeness of fluvial deposits [PDF]

, 2015
Understanding sedimentary preservation underpins our ability to interpret the ancient sedimentary record and reconstruct palaeoenvironments and palaeoclimates.
Amsler, Mario Luis, Best, James L., Hardy, Richard J., Orfeo, Oscar, Parsons, Daniel R., Reesink, Arnold J., Szupiany, Ricardo Nicolas, Van den Berg, J. H.   +7 more
core   +1 more source

Quantification of Modelling Uncertainties in Bridge Scour Risk Assessment under Multiple Flood Events

Geosciences, 2019
Local scour is a dynamic process evolving during the lifetime of bridges as a result of the changes in hydrologic and hydraulic conditions. Current approaches for scour risk assessment are generally based on the evaluation of the equilibrium scour depth ...
Alonso Pizarro, Enrico Tubaldi
doaj   +1 more source

Analysis of Lateral Dynamic Response of Caisson Foundation in Layered Clayey Soils considering Scour-Hole Dimensions

Shock and Vibration, 2020
As a cross-sea or river deep-water foundation, it is clear that the caisson foundation will be subjected to significant lateral dynamic loads due to winds or waves and suffer from scouring under its long-term effect.
Wenbo Tu, Xiaoqiang Gu, Xianfeng Ma, Dawei Huang   +3 more
doaj   +1 more source

Clean Cut (adaptive, multimodal surgical infection prevention programme) for low‐resource settings: a prospective quality improvement study

BJS (British Journal of Surgery), EarlyView., 2020
Clean Cut is a multimodal, adaptive, checklist‐based infection prevention programme designed to improve compliance with six critical perioperative infection prevention practices. After introducing the programme at five hospitals in Ethiopia, compliance with critical infection prevention standards significantly improved and the relative risk of ...
J. A. Forrester, N. Starr, T. Negussie, D. Schaps, M. Adem, S. Alemu, D. Amenu, N. Gebeyehu, T. Habteyohannes, F. Jiru, A. Tesfaye, E. Wayessa, R. Chen, A. Trickey, S. Bitew, A. Bekele, T. G. Weiser   +16 more
wiley   +1 more source

Application of gradient tree boosting regressor for the prediction of scour depth around bridge piers

Journal of Hydroinformatics, 2021
Scour around bridge piers is a complex phenomenon and it is essential to assess or predict the scour hazard around bridge piers in tandem with completely understanding its mechanism.
B. M. Sreedhara, Amit Prakash Patil, Jagalingam Pushparaj, Geetha Kuntoji, Sujay Raghavendra Naganna   +4 more
doaj   +1 more source

Morphology Evolution of Three-Dimensional Scours Under Submerged Jets

Frontiers in Earth Science, 2022
Through physical model tests, the three-dimensional morphological features and their scale changes with time were measured and comparatively analyzed during the scouring of a homogeneous granular bed surface using submerged oblique jets.
Ke-ling Chen, Wang-ru Wei, Jun Deng
doaj   +1 more source