Results 211 to 220 of about 2,102 (256)

Hydrographs and Estimates of Scour Depth Excess for Pier Scour Prediction

Transportation Research Record: Journal of the Transportation Research Board, 2011
A practical procedure for using the Scour Rate in Cohesive Soils (SRICOS) method to predict bridge pier scour depth in ungauged streams is presented. The procedure is illustrated by the Interstate 90 westbound bridge over Split Rock Creek in South Dakota.
Francis C. K. Ting, Ryan J. Larsen, Allen L. Jones   +2 more
openaire   +1 more source

Multi-lens pier scour monitoring and scour depth prediction

Proceedings of the Institution of Civil Engineers - Water Management, 2014
Severe pier scour is usually the major cause of bridge failures. It is therefore crucial to develop various scour monitoring techniques and prediction models for real-time warning of bridge safety. In the present study, a multi-lens monitoring system for pier scour under laboratory conditions has been developed.
Wen-Yi Chang, Franco Lin, Jihn-Sung Lai, Lung-Cheng Lee, Whey-Fone Tsai, Chin-Hsiung Loh   +5 more
openaire   +1 more source

Scour depth modelling by a multi-objective evolutionary paradigm

Environmental Modelling & Software, 2011
Local 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, GIUSTOLISI, Orazio   +1 more
openaire   +2 more sources

Soft computing for prediction of river pipeline scour depth

Neural Computing and Applications, 2012
This 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, Mohd. Azlan Mohd. Yusoff   +1 more
openaire   +1 more source

Experimental Analysis of the Scour Pattern Modeling of Scour Depth Around Bridge Piers

Arabian Journal for Science and Engineering, 2017
Bridge 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, Muhammad Tufail, Muhammad Ajmal, Zia Ul Haq, Tae-Woong Kim   +4 more
openaire   +1 more source

Effects of Inclination of Bridge Piers on Scouring Depth

Journal of Hydraulic Engineering, 2004
For 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
openaire   +1 more source

Limits on Coastal Scour Depths due to Tsunami

International Efforts in Lifeline Earthquake Engineering, 2013
Tsunami 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, Mathew Francis, Jeremy D. Bricker   +2 more
openaire   +1 more source

Evolution of Scour Depth at Circular Bridge Piers

Journal of Hydraulic Engineering, 2004
Experiments 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, Jihn-Sung Lai, Chin-Lien Yen   +2 more
openaire   +1 more source

The effect of tailwater depth on the dynamics of local scour

Canadian Journal of Civil Engineering, 2000
The 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
openaire   +1 more source

Prediction of Maximum Scour Depth at Submarine Pipelines

Journal of Hydraulic Engineering, 1991
This 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
openaire   +1 more source