Results 21 to 30 of about 507 (175)
Safety distances of cylindrical reinforced concrete piers under vehicle explosion [PDF]
Proceedings of the Institution of Civil Engineers - Structures and Buildings, 2022 Since the terrorist attacks on 11 September 2001, structural resistance to explosion has received increasing attention. As bridges are controlling factors in traffic systems, explosion-induced bridge damage will cause great economic loss and social impact, but there is a lack of anti-explosion research for bridges.
Zhao Zhu, Yuan Li, Shuanhai He
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Local scour around bridge piers a study of its effects around cylindrical pier groups [PDF]
Revista de Ingeniería, 2000 Laboratory experiments were conducted to measure local scour around cylindrical piers in different arrangements. Also experimental data was compiled for each arrangement to develop semi-empirical equations by means of statistical analyses. The methodology of Salim & Jones (1996) was tested with the experimental data and a new equation to predict ...
Andrés Mauricio Espinosa Farfan +1 more
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مجله آب و خاک, 2014 Bridges are the most important structures in river engineering. One of the most causes in bridges destruction is local scouring around the bridge piers.
B. Mahjoob +2 more
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Numerical Study of the Flow and Blockage Ratio of Cylindrical Pier Local Scour
Applied Sciences, 2023 A three-dimensional large eddy simulation model is used to simulate the turbulent flow dynamics around a circular pier in live-bed and clear-water scour conditions. The Navier–Stokes equations are transformed into a σ-coordinate system and solved using a
Mario Hurtado-Herrera +4 more
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Comparison between the circular and square collar in reduction of local scouring around bridge piers
E3S Web of Conferences, 2018 In this study operation of two types of circular and square collars has been investigated on a single cylindrical pier. The results showed that using of these two types of collars cause to reduction of scour depth especially under the bed level ...
Khodashenas Saeed Reza +2 more
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Characteristics of reducing local scour around cylindrical pier using a horn-shaped collar
Journal of Engineering and Applied Science, 2022 Local scour is the major cause of bridge water damage. The sediment in the riverbed around the pier is eroded and transported by water flow, leading to a loss of bridge foundation stability.
Kedian Luo +4 more
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Applied Sciences, 2021 In the current study, a three-dimensional CFD model is utilized to investigate the variation of the flow structure and bed shear stress at a single cylindrical pier during scour development.
Ahmed M. Helmi, Ahmed H. Shehata
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Shuili Shuiyun Gongcheng XuebaoIn order to investigate the characteristics and development patterns of erosion damage in bridge piers in mountainous areas, a three-dimensional refined measurement method of concrete bridge pier surface erosion based on LiDAR and binocular cameras with ...
WEI Kai +3 more
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The Study of Rate of Scour at Cylindrical, Square and Round Nosed Piers [PDF]
Journal of Scientific Research and Reports, 2017 Rate of scour adjacent to piled foundations may result in rapidly loss of skin friction and load bearing capacity of the piles. The piles may be subjected to unplanned bending stresses, from lateral loads and hydrodynamic forces. The knowledge related to the time taken by different piers to achieve a certain scour depth is limited.
Swilla, Livingstone, Kazumba, Shija
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International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT To address the dual challenges of routine driving vibration and impact loads in vehicle seat suspensions, a novel variable‐gap magnetorheological damper (VGMRD) is proposed. By combining a tapered piston with a conformal variable‐diameter cylinder, stroke‐dependent, dual‐mode damping characteristics are achieved without the need for complex ...
Min Wei +4 more
wiley +1 more source