Special bearings

Custom solutions can be developed for any structure.

Uplift spherical bearings

Lightweight construction along with complex load cases for traffic, wind, earthquakes etc. often not only causes compressive stress in bearings but also frequent uplift forces. The bearing needs to be able to rotate and displace while subjected to these tension forces.

Uplift spherical bearings to resist (frequent SLS load reversals)

Zero-clearance transmission of fluctuating compressive / tensile loads when in operation (> 100,000 load reversals), without fatigue and wear

Triaxial accommodation of displacement and rotation during service and maximum loads

Uplift spherical bearings to resist (rare ULS load reversals)

Transfer of alternating compression/tensile loads only in rare load-bearing safety situations (such as earthquakes) in which only a limited number of no more than 50 load reversal instances occur.
Triaxial accommodation of displacement and rotation.

Temporary horizontal restraint systems on bearings

Complex superstructures, rapid progress in construction and cost-saving measures can result in the need to temporarily fix the deck structure horizontally on sliding bearings that in service will displace horizontally. These bearings are fitted with a bolted restraint system, which temporarily locks the bearing in the required direction.

Restraint system on movable bearings for building construction in progress or also for the final finished state.
Release and restraint of the bearings for the service load case by releasing or fastening the bolted restraints.