Concrete Through Girder Bridge
Concrete Through Girder Bridge
(OP)
Hi,
I'm designing a concrete through girder railway bridge (due to clearance constraint, I have to place the deck at the bottom flange) and I am not sure if I have to allow for U-Frame action on the deck and the deck connection to the girder?
Anyone aware of papers or discussion on this topic??? U-frame action in steel through girder are well documented and specified in design standards however, I cannot find any for concrete.
Appreciate any relevant response.
Cheers
I'm designing a concrete through girder railway bridge (due to clearance constraint, I have to place the deck at the bottom flange) and I am not sure if I have to allow for U-Frame action on the deck and the deck connection to the girder?
Anyone aware of papers or discussion on this topic??? U-frame action in steel through girder are well documented and specified in design standards however, I cannot find any for concrete.
Appreciate any relevant response.
Cheers






RE: Concrete Through Girder Bridge
It sounds like a JMI channel bridge (it was a patented system), which is essentially a u-frame.
See if you can get a copy of "The Segmental Concrete Channel Bridge System" prepared by Civil Engineering Research Foundation, Report No. HITEC 96-01.
JMI was a spin-off of Figg & Mueller. The US operation designed a few of these bridges in the early-mid 90's; haven't heard of any one building one since. When the US operation was sold in '98 their European parent kept the patent.
RE: Concrete Through Girder Bridge
RE: Concrete Through Girder Bridge
Nerendra Taly
McGraw Hill 1998
addresses generically these bridges in section 5.2.6 Trapezoidal box and U-beam bridges, p. 515 to 523
Not a very normative outlook and mostly roadbridge, but quotes a number of references.
Theory and Design of Bridges
Petros P. Xanthakos
McGraw Hill 1994
addresses RC THROUGH GIRDER BRIDGES at section 3-7, p. 198 to 202, also roadbridge outlook, considers Girder-Slab Interaction and so implicitly recommends to consider frame action, even if in simple way; a more hands-on article.
Except that you be ample on stiffness, considering frame action for a railway bridge can't be but benefitial, since moder codes are quite stringent in specs for controlled deformation.
A seasoned publication on RC Slab-and-edge bridges
http://www.google.es/url?sa=t&rct=j&q=mome...
RE: Concrete Through Girder Bridge
Thank you for the response. I cannot source the book in our office library soon enough but I wonder if you have a it? If it's not too much of an imposition, would you mind flicking me a copy of the relevant pages.
Appreciate your help.
Cheers
RE: Concrete Through Girder Bridge
RE: Concrete Through Girder Bridge
RE: Concrete Through Girder Bridge
I will be looking if I find examples in some magazines.
RE: Concrete Through Girder Bridge