PERFORMANCE BASED SEISMIC DESIGN OF BUILDING STRUCTURES WITH VISCOELASTIC DAMPERS

摘要

The first part of this paper outlines mechanical properties of a viscoelastic damper (VED) which are temperature- and frequency-dependent. The second part deals with an analytical method for quantifying damping capacity of a building with the VEDs whose mechanical properties are represented by generalized Maxwell models. It is shown that the damping effect depends on the stiffness of members to support the damper, and that there is an optimum amount of the damper to provide the structure with the maximum damping factor. It is also proved that VEDs are available to assure the ultimate stability of multi-story buildings for even quite intense ground motions.