| 摘要 |
PROBLEM TO BE SOLVED: To provide a seismic response controlled bridge pier which is easily maintained and is excellent in durability, workability, and economical efficiency. SOLUTION: RC rod-like dampers 21 also serving as connecting members are installed in a form similar to the intermediate beams between RC columns 2 constituting the seismic response controlled bridge pier 1. In the RC rod-like dampers 21, reinforcing bars 22 for energy absorption or PC steel extending in a longitudinal direction are embedded in concrete, and the end sections of the RC rod-like dampers 21 are inserted in the restricting holes 24 of circular restricting pipes 23 having a circularly formed inner surface. When the RC columns 2 are bent and deformed by an earthquake, such bending deformations as to cause vertical displacements occur in the RC rod-like dampers 21, and the reinforcing bars 22 etc. in the RC rod-like dampers 21 are elastically deformed to absorb vibration energies generated at the earthquake. The deformation of the RC columns 2 thereby falls within an elastic range even at the time of, for example, a level 2 earthquake. COPYRIGHT: (C)2011,JPO&INPIT |
