Seismic isolator MLDRB / MHDRB

rubber

MAURER Elastomeric Bearings are isolators and feature the properties of a conventional structural bearing. They distinguish by a good re-centering capability at horizontal displacement. MAURER Elastomeric Bearings isolate the structure and the foundation in case of seismic loads. Depending on the requirements, elastomeric mixtures with low (MLDRB, MAURER Low Damping Rubber Bearing) and high damping (MHDRB, MAURER High Damping Rubber Bearing) are available. Elastomeric isolators with low damping consist of several layers of a special elastomer placed on top of each other, which are connected through steel sheets. The isolators transmit the vertical loads from the structure with rotations and elastic re-centering allowed at the same time, dependent on the height of the elastomer and its shear modulus. The shear modulus is between 0.6 and 1.2 N/mm2 depending on the requirements. Elastomeric isolators with high damping consist of an elastomer with high damping properties. The High Damping Rubber features a larger contact surface between elastomer molecule and filler, which leads to higher damping rates of 10 to 20% and thus generates a considerably higher hysteresis.