Improvement on steel dynamic hysteretic model and evolution to the seismic design of steel buildings

本研究是在结构钢材动力循环加载试验的基础上，考虑结构的动力滞回特性，评价钢结构建筑抗震性能中的应变率效应。首先，对常用的滞回阻尼器、柱、梁等钢材进行了一系列的动力循环加载试验。无论是哪种钢，屈服强度都随着应变率的增加而增大。然而，在大塑性变形中，强度的发光被阻止了。应变率仅在加载开始后的几个循环受到影响。其次，在前人试验研究的基础上，建立了影响应变率的钢材性能数据库。

This study is consideration of dynamic hysteretic characteristics based on the dynamic cyclic loading tests of structural steel and evaluation of strain-rate effect in seismic performance of steel buildings. First, I have conducted a series of dynamic cyclic loading test of steel which popularly used as hysteretic damper, column, and beam. Regardless of steel kinds, yield strength glowed up when strain-rate was increased. However, the glow of strength was stopped in large plastic deformation. Strain-rate was affected only several cycles after loading have started. Second, I made a database of steel performances affected strain-rate base on previous experimental studies.