Bearing Seat [SIG]
This part can be utilized to define bearing seats between bearings and pier caps. Bearing seats provide a stable surface for bearings to function effectively and can be used to reduce elevation differences between girders. Currently, bearing seats are mainly used for 3D models and 2D CAD. They do not affect FEM, except for potentially changing node elevations. Any stiffness due to the bearing seat is not modeled in FEM.
General
Insertion Points: Used for specifying the bearing location and can be selected by using the three dots and the options ‘Pick...’ and ‘Select...’.
Type [Rectangle/Step]: This parameter is used to define the object type. The available options are Rectangle and Step.
Material: The material definition for the bearing can be made using this parameter. Materials can either be imported or assigned from previously defined ones.
Bearing Seat Steps:
Length: The length is defined by this parameter.
Height: The height is defined by this parameter.
Geometry Option[Flat/Sloped]: This parameter is used to specify the geometry option, with 'Flat' and 'Sloped' available as selections.
Height 1: The height 1 is defined by this parameter.
Width Computation [User Input/Auto]: The options ‘Auto’ and ‘User Input’ can be chosen. In the case of choosing the ‘Auto’ option, the object will be generated according to the pier cap's width along Y-axis. Otherwise, the width of the object will be generated according to the input for the ‘Width’ column.
Width: If the ‘Width Computation’ parameter is set to ‘User Input,’ this column will be activated, allowing the user to specify the width of the bearing seat.
Length: The length of the bearing seat along the X-axis.
Horizontal Offset: When width computation is chosen as ‘User Input’, the horizontal offset value can be specified. This value indicates the distance from the center of the insertion point on the Y-axis direction.
Thickness Computation [User Input/Auto]: The options ‘Auto’ and ‘User Input’ can be chosen. In the case of choosing the ‘Auto’ option, the object will be generated according to the distance between the top of the pier cap and the bottom of the girder. Otherwise, the thickness of the object will be generated according to the input for the ‘Thickness’ column.
Thickness: If the 'Thickness Computation' parameter is set to 'User Input,' this column will be activated, allowing the user to specify the thickness of the bearing seat.
Longitudinal Offset: The longitudinal offset of the bearing seat from the insertion point reference. This parameter allows positioning the bearing seat along the bridge alignment direction.
Vertical Offset of Seat Bottom from Top of Cap: The vertical distance from the top of the pier cap or abutment to the bottom of the bearing seat. A positive value positions the seat below the cap surface, while a negative value positions it above.
IFC
Type: The IFC Type is specified using this parameter.
Predefined Type: The IFC Predefined Type is specified using this parameter.
Parent [Substructure/Superstructure/Deck/Pierfoundation/Approach_Structure/Bridge]: The IFC Parent is specified using this parameter.
Properties:
Ifc Value[Text/Label/Number]: This parameter specifies the IFC Value. The available options are 'Text,' 'Label,' and 'Number.'
Text Value: If the IFC Value parameter is set to 'Text,' its value is defined by this parameter.
Number Value: If the IFC Value parameter is set to 'Number,' its value is defined by this parameter.
Property: The property is specified using this parameter.
Property/Set: The property is specified using this parameter.
Quantities
Rebar Density (per cubic yard): The density of reinforcing steel per cubic yard of concrete. Used to calculate the rebar weight based on the bearing seat volume.
Rebar Weight: The calculated rebar weight based on the rebar density and bearing seat volume. (Read-only)
Volume: The total volume of the bearing seat concrete. (Read-only)
Weight: The total weight of the bearing seat based on volume and material density. (Read-only)
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