A BRIDGE BEARING ARRANGMENT STRUCTURE FOR A VERTICAL OFFSET OF BRIDGE

摘要

The present invention is an arrangement structure of a friction pendulum seismic isolation bearing supporter, which includes: a pier (100), which is a lower structure of a bridge; slabs (200), which are upper structures of the bridge; a friction pendulum seismic isolation supporter (300) on each upper surface of the bridge to support the slabs; and an expansion joint device (400) installed at both ends of each slab and a joint section between the slabs to form a bridge. The friction pendulum seismic isolation supporter (300), which is positioned on the upper surface of the pier (100) to support the slab (200), is divided into a plan friction pendulum seismic isolation supporter (320), which is movable on a plan, and a spherical surface friction pendulum seismic isolation supporter (340), which is movable on a curved surface. The plan friction pendulum seismic isolation supporter (320) is installed at the both end parts of each slab or the joint part between the slabs where the expansion joint device (400) is installed, and the spherical surface friction pendulum seismic isolation supporter (340) is installed on the upper surface of the bridge (100), at which the expansion joint device (400) is not installed, so that vertical movement is received together with horizontal displacement when the displacement force of the slabs (200) occurs. The present invention has an effect to a bridge structure in that a smooth surface is maintained on both ends of each slab or on the expansion joint section jointing the slabs with each other when a displacement force is generated in the slabs, which are upper structures of the bridge, due to an earthquake and the like.