Results 211 to 220 of about 23,149 (239)

Scour at Wide Bridge Piers

Building Partnerships, 2000
Most empirical, local scour prediction equations over predict scour depths at structures that are wide compared to the water depths where they are located. This paper discusses various researchers attempts to deal with this problem. The methods and equations used by several Western European Countries (obtained during the FHWA, 1998 European Scanning ...
J. Sterling Jones, D. Max Sheppard
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Local scour around bridge piers

Journal of Hydraulic Research, 1987
Local scour around cylindrical bridge piers in uniform, cohesionless sediment was investigated experimentally. Three empirical functions which relate equilibrium scour depth with approach velocity, sediment size and How depth were obtained. The variations of equilibrium scour depth with approach velocity show that the depth of scour decreases at ...
Y. M. Chiew, B. W. Melville
openaire   +1 more source

Radar measurement of bridge scour

NDT & E International, 1999
Abstract Scour around bridge piers and abutments has resulted in many structural failures over the past decade and considerable research has been carried out to develop methods which can be used to evaluate the risk of scour affecting the integrity of these major structures. Traditional site investigation methods based on borehole core and samples of
M.C. Forde, D.M. McCann, M.R. Clark, K.J. Broughton, P.J. Fenning, A. Brown   +5 more
openaire   +1 more source

Scour at Bridge Crossings

Journal of the Hydraulics Division, 1960
Relationships are proposed for prediction of scour at piers and abutments for case in which sediment is supplied to scour hole; relationships were obtained from combination of approximate analysis and laboratory experiments, and depend on knowledge of flow conditions at bridge site; studies were made at Iowa Institute of Hydraulic Research.
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Scouring reliability of bridge abutments

2015
Failures of bridges crossing wide rivers may cause a number of inconveniences, such as loss of several lives, damages to public and private properties, and traffic disruption. That is why various modes of bridge failures should be accounted for in the planning and design phases to compensate for such negative impacts.
KÖSE, Ömer, YANMAZ, A. Melih
openaire   +2 more sources

Local Scour Around Bridge Piers

Journal of the Hydraulics Division, 1969
Local scour caused by the horseshoe vortex system which forms at the base of the piers is considered. Piers which induce a pressure field strong enough to cause the formulation of the horseshoe vortex system are termed blunt nosed; all others being classed as sharp-nosed piers.
Hsieh W. Shen, Verne R. Schneider, Susumu Karaki   +2 more
openaire   +1 more source

Probablistic Bridge Pier Scour Factors

Vulnerability, Uncertainty, and Risk, 2014
Over the past 40 years, numerous studies have been conducted and equations developed to predict bridge-pier scour. Although it is desired to have a conservative approach to scour to increase our sense of safety and reliability, field experience often leads bridge and hydraulics engineers to suspect that the equations over-predict scour at a significant
Peggy Johnson, Paul Clopper, Lyle Zevenbergen   +2 more
openaire   +1 more source

Advancing Bridge‐Pier Scour Engineering

Journal of Professional Issues in Engineering Education and Practice, 1991
Civil engineers are currently faced with the design, monitoring, and maintenance of bridge piers where local scour is a concern. Current equations and models for predicting pier scour provide a single maximum value for scour depth, rather than scour depth as a function of time.
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Scour and scour protection at bridge abutments

2020
öz KÖPRÜ YAN AYAKLARINDA OYULMA VE OYULMAYA KARŞI KORUMA Kayatürk, Şerife Yurdagül Doktora Çalışması, înşaat Mühendisliği Bölümü Tez Yöneticisi: Prof. Dr. Mustafa Göğüs Ortak Tez Yöneticisi: Dr. Mehmet Ali Kökpmar Ocak 2005, 213 sayfa Köprü yıkılmalarının en yaygın nedeni, köprü temelleri etrafındaki yatak malzemesinin taşkınlarla aşınması ve ...
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Bridge pier scour assessment for the Confederation Bridge

Canadian Journal of Civil Engineering, 1997
The Northumberland Strait Crossing Project has presented many engineering challenges, one of which has been the assessment of scour protection requirements for the 65 bridge piers. The direct application of standard scour design techniques was not possible for this project because of the combination of complex flow conditions (waves and currents ...
C.D. Anglin, R.B. Nairn, A. Cornett, L. Dunaszegi, J. Turnham   +4 more
openaire   +1 more source