Prefabricated I-Beams is adding in ICDAS COB 2018.02 for parametric Excel input. Abutments are adding to ICDAS Revit Bridge Libraries. The pier is designed in minimum concrete quantity also added to the libraries. Concrete is casted in-situ over the center pier which is fixing the prefabricated I-Beams from the two spans with 200mm gap and the over deck with reinforcement.
Figure: Revit perspective bottom, new parametric I-Beams.
The 110mm pavement is create manually based on geometry for top of deck automated from the Excel input. By using the Excel input, the user obtained also LUSAS FEM model for the over deck, loads, and combinations of loads on the over deck concurrently. 
Figure: Revit perspective longitudinal direction. Static system of the bridge is considering during creation of the Revit BIM model. Thus, the Revit 3D object provide clearly information for the LUSAS FEM model, especially at detailed connections of the structural elements. The two I-Beams spans are 20m length, having 200mm gap over the center pier which will be fixing in all directions by reinforcement and concrete casting. The bridge has 50mm free spaces at the two ends for temperature expansion and bracing forces as shown in the Floor Plan View below. 
Figure: Revit Floor Plan Site View.
The prefabricated I-Beams are supported on bearings at the two ends abutment and fixed at the center pier with 800mm width. Thus, the I-Beams are locating 300mm on the pier (300+200+300) mm, as shown in the Longitudinal section below.
Figure: Revit Longitudinal Section.
The section at the center pier below shows the prefabricated I-Beams 1200mm locating direct on top of pier. The I-Beams, top of pier and over deck are all casting with reinforcement so the center pier will carry the longitudinal braking forces. All ICDAS COB concrete objects are available for reinforcement modeling but it is not modeled here. 
Figure: Revit Center Pier Section.
The section below at the abutment shows the prefabricated I-Beams locating on the 150mm height bearings. The bearings allow the I-Beams and the over deck to move in longitudinal direction for temperature expansion and braking forces.
Figure: Revit Abutment Section.
LUSAS FEM Model
› Deck-Beam in Master/Slave surface coupling by Line Mesh › Nonlinear analyse involving birth and death elements of TTSlab in phase1 and 2
Refer case of prefabricated TT-Slab deck.
ICDAS COB for Frame Bridges
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