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Excerpt

General

In OpenBrIM, temporary supports can be used for both continuous segments and closure joints. Before adding a temporary support, it is necessary to define a Support Line that is at the station of the temporary supportssupport. Additionally, the Single Element doesn’t have a 3D Model. To see the position of the temporary support, users should use the FEA View.

Girder: Choose the girder on which the temporary support is constructed.

Support Line: Select the support line where the temporary support is constructed.

Longitudinal Offset From Support Line [in]: Offset from the selected Support Line. Negative values for downstation and positive values for upstation. 

Fixity

Tx [kip/in][Usually, fixed supports are employed for all directions when users do not intend to calculate the stiffness of the temporary tower, etc

Tx [Fixed/Free/Stiffness]: When the bearing rotation is 0 degrees, the The stiffness in the longitudinal direction is represented by tx. It is typical for a continuous girder to have at least one fixed bearing (or use a real stiffness value) in the tx directionTx.

Ty [kip/in] [Fixed/Free/Stiffness]: The stiffness in the transverse direction is represented by ty when the bearing rotation is 0 degreesTy.

Tz [kip/in] [Fixed/Free/Stiffness]: Tz represents the stiffness in the vertical direction, and it is common to use a high stiffness value such as 1000 kip/in or a fixed.

Rx [kip-in/rad][Fixed/Free/Stiffness]: To address stability concerns, a small RX stiffness can be used in the torsional direction (Rx) under certain conditions. If the constructed girders are not connected with bracings to other girders at any stage, it can result in stability issues. Therefore, to overcome this problem, a small RX stiffness is recommended.Ry [kip-in/rad]Rotation stiffness in Rx direction.

Ry [Fixed/Free/Stiffness]: Typically, bearings are free to rotate Rotation stiffness in Ry direction.

Rz [kip-in/rad] [Fixed/Free/Stiffness]: Typically, bearings are free to rotate Rotation stiffness in Rz direction.