Skip to main content
Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Why Study Bridge Hydraulics - Importance and Applications

By: Haseeb Jamal / On: Jan 15, 2017 / Notes
Bridge Hydraulics

Importance of Bridge Hydraulics

Many people, indeed many engineers, who are not familiar with the subject think that constructing a bridge across a river is entirely a problem in structural engineering. They assume that the bridge opening can be made so large that it will completely span the river at such a height that floodwater will never rise anywhere near the deck. If this was always true there would be little need to study bridge hydraulics, but in reality things are rarely this simple.

Economics often dictate the length of span and therefore how many piers have to be located in the river. Similarly economics, the geography of the site or the nature of the crossing (such as a railway line with a fixed vertical profile may impose some restriction on the maximum permissible elevation of the deck. Consequently flood levels may rise to deck height or above. What initially appeared to be an elementary problem turns out to be quite complicated.

So why study bridge hydraulics?

  1. Nobody can be allowed to build a new bridge that has piers and/or abutments in a river without first being able to prove by calculation or modeling that the resulting backwater will not cause, or significantly exacerbate, flooding of land and property upstream. This is becoming increasingly important as the demand for building land leads to construction on river flood plains that, by definition, are already prone to flooding.
  2. At locations where there is an existing bridge and significant flooding, an analysis may be required to determine how much of the flooding is caused by the bridge and how much by other factors such as simply too much floodwater to be carried within the river channel. If the analysis shows the bridge to be at fault, then this may be sufficient justification to construct a new structure.
  3. If it is known that a bridge provides a significant obstacle to flow and is responsible for much of the flooding that occurs, with a knowledge of bridge hydraulics it may be possible to design improvement works that will help to alleviate the problem.
  4. In addition to the nature and geometry of the river channel, the shape, spacing and orientation of the bridge piers and abutments will affect the flow through a bridge and the likelihood of scouring of the bed. Well designed bridges are not immune to this problem, while bridges that are badly designed hydraulically are even more likely to fail and collapse. How can a good design be obtained without a knowledge of bridge hydraulics?


bi.chi Dec 14, 2019

The article is very easy to understand, detailed and meticulous! I had a lot of harvest after watching this article from you! I find it interesting, your article gave me a new perspective! I have read many other articles on the same topic, but your article convinced me!  powerline io    

rhainne Jan 26, 2020

Hydraulic modeling of flow impact on bridge structures: a case study on Citarum bridge. Hardwood Floor Refinishing Cincinnati

burtblart Feb 18, 2020

Thanks for sharing. Great post!

sell your home fast

pevedob Mar 31, 2020

I really loved reading your blog. It was very well authored and easy to understand. Unlike other blogs I have read which are really not that good.Thanks alot! taverns near me

quotedb Apr 01, 2020

The technology that has been implemented to build bridges is mind-boggling. It has really sped up the process and made it safer for workers, maintaining investment costs. 


logo design

funny cousin quotes

pyjehefy Apr 02, 2020

I can see that you are an expert at your field! I am launching a website soon, and your information will be very useful for me.. Thanks for all your help and wishing you all the success in your business. 


danixh.xyed Apr 02, 2020

Merely  a smiling  visitant here to share the love (:, btw  outstanding  style. purple rings

Subscribe to our Newsletter

Stay informed - subscribe to our newsletter.
The subscriber's email address.

Search AboutCivil

Related Civil-Engg. Content

The website encountered an unexpected error. Please try again later.