Results 271 to 280 of about 36,144 (312)

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

Towards a simple calibration of a scour-depth sensor

2022
This 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, Schmidt, Franziska, Chevalier, Christophe, Ture Savadkoohi, Alireza, Lamarque, Claude-Henri   +4 more
openaire   +1 more source

Reduction of scouring depth by using inclined piers

Canadian Journal of Civil Engineering, 2010
The 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
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

Scour‐depth Prediction Under Armoring Conditions

Journal of Hydraulic Engineering, 1989
A simple procedure is proposed to predict scour depth on an alluvial bed having graded materials under certain flow conditions that can produce an armor layer at the bed surface. The procedure is based on calculation of an active or mixing layer that supplies the fine particles to the sediment load transported by the flow and from where all the heavier
openaire   +1 more source

Modelling the scour depth near the bridge pier

Вычислительные технологии
Представлено численное моделирование местного размыва грунта возле мостовой опоры, вызванного речным потоком. Использованы трехмерная гидродинамическая модель с параметризацией турбулентного обмена и модель переноса осадков. В результате моделирования установлено, что воронка размыва стабилизируется.
openaire   +1 more source