For a river crossing, a steel sheet pile cofferdam is driven through the water into the river bed. Divers install interior bracing in the cofferdam. Excavation to the desired new bottom of river elevation is performed through the water within the cofferdam. The tremie seal is then poured...
The expansion joint is not within the bridge - it is at Abutment A. Pier 3 is fixed. Abutment B will have the deck over the backwall.
FHWA suggests keeping the bridge symmetric. The spans (85'-105'-105'-85'), however, are such that if the bridge were symmetric it would require a finger joint...
I am modeling a concrete deck/steel girder 4-span bridge for seiesmic response in the piers using GT-Strudl. So that I only need a single expansion joint, I am going to fix the superstructure at the third pier and use elastomeric bearings at the other 2 piers and 2 abutments. Using seismic...
Lila,
A seed file is MStation's term for a template. When you hit File/New, MicroStation makes a copy of your selected seed file and you give it a new name. The beauty of the seed file is that it can be used to standardize all new drawings that you create. That is because every new file that...
I am designing a wall pier for a river crossing. The pier will be on a footing that will be founded on a tremie seal supported by piles. I have sample calcs of a pile design for a bridge pier with a tremie seal from US Steel-Highway Structures Design Handbook from the early 1970s. To design...
I designed an integral abutment several years ago and used the AISI document you refer to. I called the author of the paper and he told me that he used a trial and error solution by varying the loads at the top of the pile.
