第二剛性比の高いバイリニア系のエネルギー入力・消費特性

概要

論文の詳細を見る
The background of this paper is an introduction of structural systems combined with hysteretic dampers and an increase use of energy-based seismic design. Extensive numerical analysis was carried out to examine the energy input and dissipation behavior of SDOF and MDOF systems represented by a bilinear model having a large ratio (α) of the stiffness in the second branch to the initial stiffness. It was found that a basic premise in the energy-based seismic design, stated as "energy input and dissipation remains relatively constant regardless of the yield strength",is applicable even if the stiffness in the second branch is large (as much as α=0.75 in this study). A simple expression is derived to estimate the maximum ductility from the corresponding cumulative plastic deformation. It is also demonstrated that a large ratio (α) has an advantage of ensuring uniform distribution of dissipated energy along the stories.
一般社団法人日本建築学会の論文
1996-03-20