The bridge modeler allows to model cable restrainers that connect substructure with the superstructure at a bearing location.The restrainer properties can be defined via "Bridge > Restrainers" menu command. The user can define the restrainer properties by either specifying equivalent link properties or by specifying enables modeling of cable bridge restrainers at bearing locations where the superstructure connects to substructure systems. Users may specify restrainer properties through the Bridge > Restrainers menu. Restrainer properties may be defined according to equivalent link properties or cable restrainer characteristics, in which case the automatically program calculates the link properties are calculated from the cable characteristicscable properties. Definition is shown in Figure 1:
Figure 1 - Bridge restrainer data
For each type of restrainerdefinition method, the bridge modeler creates links connecting joints on the bent cap with the corresponding which connect bent-cap joints to bearing joints as follows (please note that the restrainer links share the same location with bearing links):
- Restrainer defined by link properties: a creates single link to connect connecting bent cap joint with to bearing joint is generated.
- Restrainer defined by cable characteristic: creates two links connecting bent cap joint with to bearing joint are created. One link has Gap property and the other link has Hook property to simulate . The gap and hook properties assigned to each link provide for cable tension such that the cable is only effective when the superstructure moves " away " from the substructure.
Please note that the restrainer links share the same location as the bearing links.
Visuals and additional details are presented in Figure 2:
Figure 2 - Link assignment
See Also
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