SEISMIC STRENGTHENING STRUCTURE OF EXISTING BRIDGE PIER, AND NEWLY-CONSTRUCTED BRIDGE PIER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a seismic strengthening structure of a bridge pier, which decreases a seismic load acting on a foundation of the bridge pier during earthquakes, while achieving shortening of a construction period and a reduction in construction cost.SOLUTION: In a bridge pier, a column part 4 is erected from a footing 3 that is buried in the ground 2, and a beam part 6 for loading superstructure work 5 is formed at an upper end of the column part. A vibration-control reinforcement member 8 having one end coupled to the beam part and having the other end coupled to the footing is arranged. The vibration-control reinforcement member has a plastic deformation part 8a with hysteresis damping characteristics provided in at least a part from the side of one end to the side of the other end.