HYBRID RUBBER BEARING USING LEAD AND TIN

摘要

A hybrid rubber bearing using lead and tin is provided to use an expansion joint device for a small bridge and to prevent the crashing with the adjacent bridge or building by reducing the displacement of the bridge deck. A hybrid rubber bearing using lead and tin comprises an elastic member(110), flanges(120a,120b), a first core(130) and a second core(140). The elastic member is made by piling a plurality of rubbers(111) and a metal plate(112). The flange is installed at the top and lower part of elastic member in order to combine with the structure. The first core is made of the lead. The first core absorbs the vibration energy passing through top and bottom of the elastic member. The second core absorbs the vibration energy passing through top and bottom of the elastic member along with the first core. The second core is made of the material having the higher yield strength and the energy absorbing ability than the first core.