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Seung Oh Lee and Seung Ho Hong
Bridge pier scour is one of the main causes of bridge failure and a major factor that contributes to the total construction and maintenance costs of bridge. Recently, because of unexpected high water during extreme hydrologic events, the resilience and s...
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Jing Liu, Zongyu Li, Hanming Huang, Weiwei Lin, Zhilin Sun and Fanjun Chen
In response to the deficiencies in existing bridge pier scour protection technologies, this paper introduces a novel protective device, namely a normal distribution-shaped surface (BND) protection devices formed by rotating a concave normal curve. A thre...
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Lav Kumar Gupta, Manish Pandey, P. Anand Raj and Jaan H. Pu
Scouring around the bridge pier is a natural and complex phenomenon that results in bridge failure. Failure of bridges have potential devastation and public safety and economic loss, which lead to political consequences and environmental impacts. Therefo...
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Camilo San Martin, Cristian Rifo, Maricarmen Guerra, Bernd Ettmer and Oscar Link
Bridges crossing rivers wider than 50 m are typically supported by piers. In a mobile riverbed, scour occurs around bridge piers, and it is the main cause of bridge collapses worldwide, especially during floods. While bridge pier scour has been extensive...
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Yisheng Zhang, Jiangfei Wang, Qi Zhou, Yingchun Cai and Wei Tang
In this study, a quasi-stumps group structure was proposed and placed upstream of the bridge piers to mitigate the scour of the waterflow on the riverbed. Both experiment and numerical simulations using FLOW 3D were employed to study the protective effec...
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Mahdi Esmaeili Varaki, Negar Tavazo and Alessio Radice
River bridge piers may collapse due to the local scour around their foundations. It is known that local scour is an effect of the three-dimensional flow field that develops near the pier and that the geometric complexity of a non-cylindrical pier may, co...
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Katsufumi Hashimoto, Tomoki Shiotani, Hiroyuki Mitsuya and Kai-Chun Chang
Micro energy harvesters (MEH) based on microelectromechanical systems (MEMS) are rapidly developing, providing a green and virtually infinite energy source. The electrostatic vibratory power generator outputs electric power when it vibrates, motivating u...
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Alonso Pizarro and Enrico Tubaldi
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 ...
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Su-Chin Chen, Samkele Tfwala, Tsung-Yuan Wu, Hsun-Chuan Chan and Hsien-Ter Chou
A new type of collar, the hooked-collar, was studied through experiments and numerical methods. Tests were conducted using a hooked collar of a width of 1.25b and a height of 0.25b, where b is the bridge-pier width. The hooked-collar efficiency was evalu...
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Pol Bouratsis, Panayiotis Diplas, Clinton L. Dancey and Nikolaos Apsilidis
The measurement of the morphologic characteristics of evolving sediment beds around hydraulic structures is crucial for the understanding of the physical processes that drive scour. Although there has been significant progress towards the experimental ch...
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