Cantilever Abutment [STG]
Abutments on OpenBrIM currently have the Generate FEM (Finite Element Model) option set to 'NO'. However, abutments can still be modeled in 3D and 2D with parametric dependencies to closely represent the actual conditions of the bridge.
General
Location: The location of the abutments can be determined by the chosen support lines.
Orientation [Front/Back]: Orientation can be used for defining the directional placement of abutments, ensuring they align correctly with the overall bridge structure.
Transverse Offset: The transverse offset value can be specified to further define the bridge location. The transverse offset refers to the offset measured along the support line.
Longitudinal Offset: The longitudinal offset value can be specified to offset the abutment with respect to the longitudinal (along PGL) direction. A negative value would mean offsetting the abutment in the downstation direction, while a positive value would mean offsetting the abutment in the upstation direction.
Material: Assign a material to the abutment. Materials can be selected from previously defined options or imported as needed.
Seat/Back-Wall
Section: The section of the seat/back-wall can be specified.
Width: The width of seat/back-wall can be specified using this parameter along the transverse direction (perpendicular to PGL). For a visual representation, refer to the screenshots below.
Depth: The elevation of the bottom of the modeled abutment can be specified using this depth parameter of section. The elevation data should be defined with respect to the Global Coordinate System, where 0 represents the level of PGL (the vertical elevation data considered). The depth parameter is referenced starting from the PGL.
Width: The width of the seat/back-wall can be specified using this parameter along the transverse direction (perpendicular to PGL). For the visual presentation, refer to the width value in the section title.(The seat/back-wall width input can be used only when the seat/back-wall section is null).
Length: The Length of the seat/back-wall in the longitudinal direction can be specified using this parameter. For a visual representation, refer to the screenshots below.
Override Top Elevation: This is used to override the upper portion of the seat/back-wall section. When defined, it allows you to enter a top-elevation value.
Top Elevation: The top seat/back-wall geometry can be overridden using the parameters listed below..
Length: Starting from the right when looking upstation along the PGL, the length in the transverse direction for the tot ep vetionation can be defined by this parameter to further specify its variation.
Elevation: This parameter represents the initial elevation of the seat/back-wall based on the defined length.
Geometry Option [Flat/Sloped]: The elevation can either remain constant throughout the defined length or vary as a slope.
Elevation 1: For sloped sections, a second elevation value can be defined for the initial point of the specified length.
Override Bottom Elevation: This is used to override the bottom portion of the seat/back-wall section. When defined, it allows you to specify a bottom-elevation value.
Bottom Elevation: The bottom seat/back-wall geometry can be overridden using the parameters listed below..
Length: Starting from the right when looking upstation along the PGL, the length in the transverse direction forto ehevotion elevation can be defined by this parameter to further specify its variation.
Elevation: This parameter represents the initial elevation of the seat/back-wall based on the defined length.
Geometry Option [Flat/Sloped]: The elevation can either remain constant throughout the defined length or vary as a slope.
Elevation 1: For sloped sections, a second elevation value can be defined for the initial point of the specified length.
Right/Left Wing Wall
Wing Wall[YES/NO]: This parameter indicates whether it will be a wing wall. Section: The section of the wing wall can be specified.
Top Slope Option[Slope/From Alignment]: This defines the option for the wing wall’s top slope. If ‘Slope’ is selected, the value can be entered manually. If ‘From Alignment’ is selected, the slope is taken from the alignment.
Depth: This specifies the depth of the wing wall on the abutment side.
Length: The length of the wing wall in the longitudinal direction can be specified using this parameter.
Longitudinal Offset: The longitudinal offset value specifies the wing wall's position relative to the longitudinal (along PGL) direction. A negative value offsets the wing wall in the downstation direction, while a positive value offsets it in the upstation direction.
Transverse Offset: This offsets the Wing Wall in the direction of the backwall.
Angle of Start Face Plane: This specifies the plane angle to the geometry of the wing wall’s start points.
Angle of End Face Plane: This specifies the plane angle to the geometry of the wing wall’s end points.
Angle: This specifies the angle based on the point where it intersects the abutment
Adjust Bottom Elevation with Bottom Elevation of Backwall [YES/NO]: This matches the bottom elevation of wing wall with the bottom elevation of the backwall.
Bottom Elevation: This displays the Bottom Elevation of the Wing Wall as read-only.
3D Visualization
Right/Left Chamfer[YES/NO]: This parameter indicates whether it will be a chamfer.
Right/Left Chamfer Width: This specifies the width in the direction of the abutment.
Right/Left Chamfer Length: This specifies the length in the direction of the wing wall.
Right/Left Chamfer Depth: This specifies depth from the top of wing wall.
Right/Left Chamfer Vertical Offset: This specifies the offset from the top of wing wall.
Quantities
Total Top Face Area :
Total Bottom Face Area:
Total Surface Area: All visible areas of the object shown in the visual representation below (In the visual representation below, the seat and back wall are treated as a single solid for the area calculation).
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