Headquarters:
mageba sa
Trafostrasse 1
8180 Bulach
Switzerland
Tel: +41-44-872 40 50
Fax:
Torsion bearings
RESTON-TORSION
Structural bearings
Characteristics
Designed to anchor monorail track beams
Consists of two spherical and two cylindrical bearings
The calotte parts are made of highly corrosion resistant ROBO-ALLOY
Principle
The RESTON-TORSION bearings consist of 2 spherical and 2 cylindrical bearings, with the different combinations of vertical load and torsion governing different parts of the assembly. In case of low torsional force, both of the main bearings (spherical) are loaded but the claw bearings (cylindrical) are not, whereas when high torsion forces act on the product only one of the main bearings is loaded along with the claw bearing on the opposite side.
Applications
The RESTON-TORSION is designed to support and safely anchor monorail track beams. These beams are typically precast, post-tensioned concrete girders, 20–25 meters in length, 2.0–2.5 meters in height and 650 to 850 mm in width. Eccentric passenger load, track bends and horizontal loads (wind, seismic) all lead to torsion (bending moment about the longitudinal axis) acting on the girder. This torsion must be resisted by the bearing assembly, whilst allowing for rotation and, for the guided type, movement.
Main plate being placed on calottes of a torsion bearing
Inspection of a RESTON-TORSION bearing after production
RESTON-TORSION bearings for precast girders
Test bearing at MPA Karlsruhe, Germany
