Results 211 to 220 of about 2,467 (253)

Study on maximum scour depth of slanting stream in gravel channel

2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011
The local scour depth is a key parameter in the design of levee engineering. Based on experiment data, a non-dimensional analysis for the prediction of local scour depth of slanting stream is presented, The maximum scour depth is related to the approach flow velocity, flow depth, flow angle, slope of levee and the particle size of the bed sediment. The
Xingnian Liu, Xiaoming Guo
exaly   +2 more sources

Design relationships for maximum local scour depth for bridge pier groups. [PDF]

, 2009
An investigation of local scour at pier groups has been conducted with the aim of developing design recommendations and scour depth prediction equations for the bridge pier groups. A comprehensive series of steady uniform flow experiments was performed on groups of 2, 3, 4, and 6 model piers. All tests were conducted under clear-water scour conditions.
Nazariha, Mehrdad.
openaire   +3 more sources

Migration of Maximum Scour Location around Wide Setback Bridge Abutments in Floodplains [PDF]

Journal of Irrigation and Drainage Engineering - ASCE, 2021
Location of maximum scour depth is a key feature for the accurate design of scour countermeasures. Experimental results show that the maximum scour depth around wide setback abutments migrates to a location further downstream than that observed ...
Siow-Yong Lim, Lim Siow-Yong
exaly   +2 more sources

Maximum scour depth based on magnetic field change in smart rocks for foundation stability evaluation of bridges [PDF]

Structural Health Monitoring, 2015
Scour was responsible for most of the US bridges that collapsed during the past 40 years. Due to erosion and refilling of riverbed deposits under strong current, the maximum scour depth is difficult to measure with existing technologies during a flood ...
Genda Chen
exaly   +2 more sources

Bridge failure and pier scouring: laboratory experiments on maximum scour depth around wide piers [PDF]

The presence of bridge piers within the river causes troubles like potential clogging of limited spans, scour around each single pier, and costs related to provisional work. All that suggests the reduction of their number increasing the dimension of each single pier.
pietro giaretta, paolo salandin
openaire   +2 more sources

Temporal patterns of the maximum scour depth around a pier [PDF]

, 2006
In temporal and spatial development of scour processes around a cylindrical pier, the maximum scour depth does not occur at the same location over the time. It localizes at the pier sides firstly, then it tends to migrate towards the pier leading face at
A Di Domenico, G Oliveto
openaire   +2 more sources

Length Parameter for Scaling Abutment Scour Depth [PDF]

Water (Switzerland), 2020
Flow constriction caused by bridge abutment increases bed shear stress and thus enhances local scour. For scaling the maximum scour depth at the abutment, either abutment length or flow depth has been empirically used in previous studies. By performing a
Nian-Sheng Cheng, Maoxing Wei, Wei Maoxing   +2 more
exaly   +2 more sources

Maximum local scour depth at bridge piers and abutments

Journal of Hydraulic Research, 1998
Results of recent laboratory investigations of local scour at bridge piers and abutments are presented. Similarities between the principal vortex occurring in local scour holes at abutments and the horseshoe vortex and downflow at piers are highlighted.
J.K. Kandasamy, B.W. Melville
openaire   +1 more source

Laboratory study of maximum scour depth downstream of sills

Proceedings of the Institution of Civil Engineers - Water Management, 2008
Bed sills have been widely used as a sequence of grade-control structures in mountain streams where incision has to be prevented. Major local scouring downstream of these structures is, however, often observed. In order to investigate the characteristics of local scouring, a number of experiments have been carried out with 105 cases in different ...
C. Chinnarasri, D. Kositgittiwong
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