In my experience, when another Engineer has designed and sealed the drawings of a particular element, they are taking the professional responcibility of that design / element. The Engineer of Record does a cursorry review to see any gross errors and if a construction Engineer is involved would...
Qshake,
No, the bridge configuration is adjacent channel girders (ie like adjacent box girders minus the bottom slab).
One system involves having diaphragms at the third points with a duct for transverse post-tensioning These diaphragms are cast with the precast section (part of the mold).
A...
Thanks Qshake, I was kind of hoping I would get a response from you! I have really apprechiated your input on eng-tips! Thanks for sharing and your input!
As for the post, I was thinking along the line of doing a grillage type of analysis to obtain the loading / reactions at the transverse...
I would apprechiate some assistance in finding some good resources and or examples on how to best model and perform bridge analysis utilizing Finite Element Analysis.
As an example I would be interested in is performing a rigorous analysis on a Prestressed Channel beam structure(inverted U)...
Does anyone have any good examples for finite element analysis on specific bridge types. I am not looking for general finite element books, rather a good reference with good examples or worked out analysis specifically for bridges.
I would like to model and analyze a simply supported...
I agree with Dinosaur and his wisdom has obviously come from observations over his career!
We (our province - yeah north of the 49th //) have been using the AASHTO LRFD for our designs since the LRFD code was first introduced. We have found that the code has become somewhat more complicated...
BRASS CULVERT LRFD is a good program to design Box culverts to the AASHTO LRFD code (3rd edition with 2006 interims). See http://www.dot.state.wy.us/generic/brass/
STAAD.Pro is the other way to go but takes much longer.
We us Brass to design the box (with hand checks to verify) and design the...
JiaJia,
Opis is basically (in my opinion) a better front end for Brass. Opis utilizes the Brass "engine" (program) to do the analysis but it displays it better both input and output which helps in evaluating you model input and results. (Brass you have to go through reams of output to verify...
JiaJia,
I'm not sure what you mean by prestressed planks.
The Box beam,I-beam, T-beam or U-beam have variable dimentions that you enter to difine the main structural system. Would a box beam without the void work for your prestressed plank situation?
Opis does not do deck design if your...
JiaJia,
Did you look at BRASS / AASHTOWARE (OPIS)? OPIS utilizes the Brass Engine but has a better interface than BRASS and is current whith AASHTO LRFD 2004.
I have only worked with OPIS, BRASS Girder LRFD and BRASS Culvert. I have started evaluating BRASS Pier LRFD however this is...
The Barker & Puckett book is a must have reference. The elastomeric bearing example is a simple example though.
You may want to look at Bridge Engineering Handbook edited by Wai-Fah Chen and Lian Duan. They also have a good example.
By web, check out Minnisota DOT LRFD Bridge Design...
rd78,
ISIS Canada as well as thier international partners are involved in this area. They have developed a design manual which is used here in Canada.
I am aware of a few bridges which have one span composed of Steel free decks (utilizing FRP as the reinforcing) localy. These structures are...
- AASHTO is a good resource and code for Highway Bridges. (Std or LRFD codes)
- AREMA is applicable for Rail Bridge structures (primarily based on AASHTO STR- AASHTO is a good resource and code for Highway Bridges. (Std or LRFD codes)
- AREMA is applicable for Rail Bridge structures...
