ENERGY ABSORPTION TYPE PRECAST MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a precast member which holds sufficient rigidity and bearing force against stationary load and earthquake load acting on a building as a main structural member and which has a vibration control function with high attenuation effect based on a new principle.

SOLUTION: When a main reinforcement is tensioned by a pretension system so that prestress is introduced to concrete and negative shear deformation is previously generated due to the compressive strain of the main reinforcement and earthquake load is applied, a viscoelastic material applied or attached to the main reinforcement at a member end part generates positive and negative shear deformation repeatedly larger than the negative shear deformation so as to absorb energy. Thus an energy absorption type precast concrete member is obtained.

COPYRIGHT: (C)2013,JPO&INPIT