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Diaphragm Location [Interior/ Left Exterior/ Right Exterior]:
Section
Transverse Distance from Edge of Bottom Flange:Concrete diaphragms can be defined as either Interior or Exterior. If the exterior option is chosen, additional width from the center of the web can be defined.
Section
Additional Width from Center of Web:
Diaphragm Depth:
Materials:
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Of Web: If the diaphragm location is defined with options other than ‘Interior,’ this parameter can be defined; otherwise, it will be marked as not applicable (N/A). Depending on the girders chosen for the location definitions of concrete diaphragms, this parameter can be used to assign additional length to the exterior sides of the girders, based on the directions (left or right) specified for the Diaphragm Loc. parameter.
Diaphragm Depth: The depth of the concrete diaphragms can be adjusted by this parameter. It will affect the depth in the longitudinal direction, as shown below.
Material: The material definition for the concrete diaphragm can be made using this parameter. Materials can either be imported or assigned from previously defined ones.
Offsets
Top Vertical Offset from Top of Deck: For visual representation of top vertical offset from top of deck, refer to the figure below.
Bottom Vertical Offset from Bottom of Girder: For visual representation of bottom vertical offset from bottom of girder, refer to the figure below.
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FEA Settings
FE Model[Two Beam+Shell/Single Beam]: The If the 'Two Beam + Shell' option is selected, the top and bottom flanges will be modeled as beam elements, and while the beam remaining portion will be modeled as a shell element if the "two beam+shell" option is chosen.In the absence of this option, a complete section will be defined as a single beam and connected to both bottom and top flange nodes using rigid elements, based on the user's selected preferences.
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Disable Bottom Rigid Line [NO/YES]: Choose "Yes" if you prefer not to generate a rigid beam element between the diaphragm and the bottom flange node.
Rigid Section Bot: A diaphragm can be linked to the bottom flange node using a rigid beam element. Please designate a section for this purpose.