Lead Rubber Bearing
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LRB(Lead Rubber Bearing)

For an LRB, a lead plug is inserted into the center of the elastomeric bearing to absorb and scatter the horizontal energies generated during an earthquake.
When an earthquake occurs, an LRB can extend the natural period of a bridge and reduce the horizontal power caused by the weight.
It can be a guideline to economical lower structure designs.
NO. Name Material
1 Upper Plate SM490 Or equal or more
2 Lower Plate SM490 Or equal or more
3 Rubber Rubber
4 Steel Reinforcing Plates Steel
5 Lead Core Lead Core


LRB is the most frequently used bearing for earthquakes. - From the functional perspectives of a bridge, it supports excellent design of a continuous bridge. - Lead molecules that experience earthquakes revert to the original molecular structure at room temperature. - Due to the features of lead, it has high resistivity against winds or braking load (short-term weight) to improve the usability and less temperature ability (long-term weight) is applied. - An LRB can improve flexibility in your design by arbitrarily adjusting the weight and reducing power for each bridge characteristic. - The reverting power of rubber does not generate residual displacement after an earthquake. It can successfully return the bridge to its original condition. - It is type of rubber bearing that can absorb the impact weight to improve the durability of a structure and suppress the noise.

Performance test


Performance test