Flared Wings At Endwall Abutment
Flared Wings At Endwall Abutment
(OP)
Probably an easy one for you guys, but I have a cantilevered abutment wall for a stream crossing. I was wondering what affects the angles of the flared wings of the abutment. The bridge is on a tangent.






RE: Flared Wings At Endwall Abutment
Wingwalls on the upstream side should be aligned to direct the flow through the bridge opening. For ease of construction, downstream wingwalls can be made mirror images.
RE: Flared Wings At Endwall Abutment
I am performing the structural design of the bridge. I assume the orientation of the wingwalls may be a question for the hydraulic engineer on the project? To give you a little more information about this project, the stream crossing is very close to a railroad crossing and thus the road cannot be re-graded to raise the bridge. The bridge is completely underwater at the 100 and 500 year flood events. One abutment is very close to the top of bank of the stream.
Thanks
RE: Flared Wings At Endwall Abutment
RE: Flared Wings At Endwall Abutment
RE: Flared Wings At Endwall Abutment
RE: Flared Wings At Endwall Abutment
"Given that your bridge flows under pressure during 100-year flood".
Are you suggesting that he design a floating bridge for the 100 year storm?
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Flared Wings At Endwall Abutment
Has anyone designed a bridge that is located under the design flood stages?
RE: Flared Wings At Endwall Abutment
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Flared Wings At Endwall Abutment
It doesn't really matter whether it's concrete or timber, the structure should be stable regardless. Nothing preventing you from designing a floating bridge that I can see. Might be a good option.
RE: Flared Wings At Endwall Abutment
Do you know where I could find design guides/references/examples for designing a bridge that is located below the design flood events? We are locked in as the grade can not be altered. The state DOT must approve the bridge to be built at this elevation of course.
RE: Flared Wings At Endwall Abutment
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
RE: Flared Wings At Endwall Abutment
But as noted, hydraulics may predominate and angling the walls would be necessary.
RE: Flared Wings At Endwall Abutment
RE: Flared Wings At Endwall Abutment
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Flared Wings At Endwall Abutment
RE: Flared Wings At Endwall Abutment
Thank you so much for directly answering my main question! I was going at 30 degrees, so nice to have some reinforcement.