The Science behind Scour at Bridge Foundations: A Review

Water, Год журнала: 2020, Номер 12(2), С. 374 - 374

Опубликована: Янв. 30, 2020

Foundation scour is among the main causes of bridge collapse worldwide, resulting in significant direct and indirect losses. A vast amount research has been carried out during last decades on physics modelling this phenomenon. The purpose paper is, therefore, to provide an up-to-date, comprehensive, holistic literature review problem at foundations, with a focus following topics: (i) sediment particle motion; (ii) physical controlling dimensionless parameters; (iii) estimates encompassing empirical models, numerical frameworks, data-driven methods, non-deterministic approaches; (iv) monitoring including successful examples case studies; (v) current approach for assessment design bridges against scour; and, (vi) needs future avenues.

Язык: Английский

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Surface sediment erosion characteristics and influencing factors in the subaqueous delta of the abandoned Yellow River Estuary

Marine Geology, Год журнала: 2024, Номер 468, С. 107219 - 107219

Опубликована: Янв. 18, 2024

Язык: Английский

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Revisiting the problem of sediment motion threshold

Continental Shelf Research, Год журнала: 2019, Номер 187, С. 103960 - 103960

Опубликована: Авг. 26, 2019

Язык: Английский

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Influences of hydrodynamics on microbial community assembly and organic carbon composition of resuspended sediments in shallow marginal seas

Water Research, Год журнала: 2023, Номер 248, С. 120882 - 120882

Опубликована: Ноя. 15, 2023

Язык: Английский

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Mechanisms of maintaining high suspended sediment concentration over tide-dominated offshore shoals in the southern Yellow Sea

Estuarine Coastal and Shelf Science, Год журнала: 2017, Номер 191, С. 221 - 233

Опубликована: Апрель 20, 2017

Язык: Английский

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Erosion and Accretion on a Mudflat: The Importance of Very Shallow‐Water Effects

Journal of Geophysical Research Oceans, Год журнала: 2017, Номер 122(12), С. 9476 - 9499

Опубликована: Сен. 14, 2017

Abstract Understanding erosion and accretion dynamics during an entire tidal cycle is important for assessing their impacts on the habitats of biological communities long‐term morphological evolution intertidal mudflats. However, previous studies often omitted very shallow‐water stages (VSWS, water depths < 0.20 m). It these VSWS that bottom friction becomes relatively strong thus are likely to differ from those deeper flows. In this study, we examine contribution effects cycle, based measured modeled time‐series bed‐level changes. Our field experiments revealed accounted only 11% duration but 35% changes cycle. Predicted cumulative agree much better with results when than conditions at >0.2 m (i.e., probe submerged) considered. These findings suggest magnitude should not be neglected modeling morphodynamic processes. useful in understanding mechanisms micro‐topography formation destruction occur VSWS, also improve our ability coastal

Язык: Английский

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Impact of wave–current coupling on the bottom boundary layer in Bohai Bay

Frontiers in Marine Science, Год журнала: 2025, Номер 11

Опубликована: Янв. 20, 2025

Sediment resuspension primarily occurs within the bottom boundary layer (BBL) of water bodies, particularly in silty coastal environments, and helps form fluid mud (FML). In this study, we report data on level, waves, currents, suspended sediment concentration (SSC) collected from Bohai Sea over one year, at a vertical resolution 4 cm, by using acoustic wave current profiler, Doppler an backscattering system. The aim was to investigate mechanisms formation disappearance FML as driven wave–current interactions seabeds findings revealed thin stable 4–12 cm seabed shallow waters. Strong waves contributed more significantly than strong currents. Moreover, SSC near generally governed while were predominant regard stormy conditions. index intensity shear β—defined ratio wave–current-induced stress critical stress—was identified sensitive indicator variations SSC. Significant occurred case coupling large events fine-grained seabed, when value β exceeded 10 for 20 h Rouse number persisted below 0.01 30 h. Following storm (β &lt; 10), gradually accumulated, led FML. Prolonged periods which surpassed that remained resulted considerable destruction Our results highlight profound impacts BBL silty, marine environments. work here offers insights into dynamics fine-particle sediment, provides suggestions mitigating negative effects associated with

Язык: Английский

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Wave-current interaction on turbulence mixing and sediment resuspension in muddy tidal flats

Estuarine Coastal and Shelf Science, Год журнала: 2025, Номер unknown, С. 109141 - 109141

Опубликована: Янв. 1, 2025

Язык: Английский

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Impact of cold water mass on suspended sediment transport in the South Yellow Sea

Marine Geology, Год журнала: 2020, Номер 428, С. 106244 - 106244

Опубликована: Май 30, 2020

Язык: Английский

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Photoproduction of dissolved organic carbon and inorganic nutrients from resuspended lake sediments

Environmental Science and Pollution Research, Год журнала: 2016, Номер 23(21), С. 22126 - 22135

Опубликована: Авг. 19, 2016

Язык: Английский

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