Results 221 to 230 of about 2,154 (264)
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Scour depth modelling by a multi-objective evolutionary paradigm
Environmental Modelling & Software, 2011Local scour modelling is an important issue in environmental engineering in order to prevent degradation of river bed and safeguard the stability of grade-control structures. Many empirical formulations can be retrieved from literature to predict the equilibrium scour depth, which is usually assumed as representative of the phenomenon.
LAUCELLI, Daniele Biagio +1 more
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Soft computing for prediction of river pipeline scour depth
Neural Computing and Applications, 2012This study presents gene-expression programming (GEP) as an alternative soft computing tool for the prediction of scour below underwater pipeline across river. Actual laboratory measurements were used for the model development. The scour depth was formulated in terms of several influencing parameters.
Hazi Mohammad Azamathulla +1 more
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Experimental Analysis of the Scour Pattern Modeling of Scour Depth Around Bridge Piers
Arabian Journal for Science and Engineering, 2017Bridge pier scouring measurement in the field, especially during flood season, is very difficult. This study experimentally investigated the pier scour pattern to find better alternatives to represent the actual field conditions. For this purpose, piers of different shapes (circular and square) and different sizes were modeled in the laboratory.
Mujahid Khan +4 more
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Effects of Inclination of Bridge Piers on Scouring Depth
Journal of Hydraulic Engineering, 2004For a safe design of a bridge pier footing, it is important to estimate the maximum depth of scour as accurately as possible. The aim of this experimental study is to investigate the effects of inclination of bridge piers on local scour depths around bridge piers.
Zafer Bozkus, Osman Yildiz
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Limits on Coastal Scour Depths due to Tsunami
International Efforts in Lifeline Earthquake Engineering, 2013Tsunami scour has received increasing attention over the past decade, given its role as a critical failure mode for building damage and, in particular, the wide scale damage to infrastructure resulting from the 2004 Sumatra Andaman Tsunami and the 2011 Tohoku Tsunami.
Susan P. Tonkin +2 more
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Evolution of Scour Depth at Circular Bridge Piers
Journal of Hydraulic Engineering, 2004Experiments of bridge pier scour are carried out under steady and unsteady clear-water scour conditions with uniform and nonuniform sediments. Around the pier nose, the sediment size variation of surface bed materials is investigated, and a regressed formula is obtained for estimating the mixing layer thickness in terms of median sediment size and ...
Wen-Yi Chang +2 more
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Prediction of Maximum Scour Depth at Submarine Pipelines
Journal of Hydraulic Engineering, 1991This paper examines and reviews published results relating to local scour around submarine pipelines. It highlights the limitations of existing methods for estimating scour depth at the pipeline. Based on experimental results, the study proposes an empirical function relating the amount of gap flow through the scour hole for given flow conditions. With
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The effect of tailwater depth on the dynamics of local scour
Canadian Journal of Civil Engineering, 2000The two-dimensional local scour occurring downstream from a submerged sluice gate for various tailwater depths was studied using a video imaging technique and a laser-Doppler anemometer. The flow field was found to be dynamic (i.e., varied with time).
R Balachandar, J A Kells, R J Thiessen
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Reduction of scouring depth by using inclined piers
Canadian Journal of Civil Engineering, 2010The aim of this experimental study is to examine the effect of inclination of dual bridge piers on scour depth under clear-water conditions for various uniform flow depths. Duration of 4 h was used in the experiments for each run. Scour depths were measured at four different points around the piers. The depths of local scour around inclined piers were
Zafer Bozkus, Murat Çeşme
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Towards a simple calibration of a scour-depth sensor
2022This extended abstract presents an innovative method for scour monitoring, based on the dynamic response of a bridgepile embedded in the riverbed. Apart from the mechanical and physical characteristics of the pile itself, soil-structure interaction (SSI)affects the dynamical behaviour of the system.
Belmokhtar, Mohamed +4 more
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