Local scour at obstructions in rivers, Civil Engineering

Assignment Help:

Q. Local Scour at obstructions in rivers?

When the water flow in river is deflected by obstructions such as bridge piers, scouring would occur arising from formation of vortexes. The mechanism of formation of vortices is as below: the flow hits the bridge piers and tends to move downwards. When flow reaches the seabed, it will move in a direction opposite to its original flow direction before hitting bridge piers. Therefore this movement of flow before bridge piers results in the formation of a vortex. Owing to formation of this vertical vortex, seabed material is continually removed so that holes are formed at the seabed and this result in local scour at bridge piers. As the shape of vortices looks such as horseshoes, it's sometimes known as 'horseshoe vortex'.


Related Discussions:- Local scour at obstructions in rivers

Dynamical method of earthquake force analysis, Earthquake force analysis me...

Earthquake force analysis method Dynamical method In contrast with the static loading, dynamical analysis method is discussed. In this method, structure reflections at any poin

Softening point of bitumen, Hi, i need discussion for softening point of bi...

Hi, i need discussion for softening point of bitumen 7.5 ?C

Which direction of reinforcement must be provided, Question In the desi...

Question In the designing of a simply supported skew bridge , which direction of reinforcement must be provided? Answer In conventional design of steel reinforcement f

Survey, 3-d figure of line ranger

3-d figure of line ranger

Paints., contituents of paints

contituents of paints

Plane table surveing, in plane table surveying which activity is done first...

in plane table surveying which activity is done first whether centering or levelling?

State the effect of shape on the bearing capacity, State the effect of shap...

State the effect of shape on the bearing capacity. Differentiate among safe bearing capacity and allowable soil pressure. Write critical notes on (i) foundations on black cot

What do you mean by settlement cracks, Q. What do you mean by Settlement Cr...

Q. What do you mean by Settlement Cracks? Settlement cracks normally take place in diagonal position. Sometimes vertical cracks may also take place (Figure (a)). Settlement cra

Road drainage and maintenance, Road Drainage and Maintenance: The life...

Road Drainage and Maintenance: The life of a road depends upon how well and quickly the water is drained away from its various components. Similarly, regular and periodic insp

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd