Content Comparison

Superstructure Connection Change

Stage:

Insertion Points: Used for specifying the bearing location.

Tx [kip/in][Fixed/Free/Stiffness]: When the bearing rotation is 0 degrees, 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 direction.

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

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

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