鉄骨X型ブレース架構の復元力特性に関する研究

概要

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Braced frames are the principal earthquake-resistant elements in steel-frame structures of a nuclear power station building. From the investigations of the actual nuclear power stations, it was found that X-type and K-type bracings are used in largest number. Although there are examples of experiments on K-type braced frames in thermal power stations, there were practically no examples of study on X-type braced frames. Therefore, experiments were conducted for one story X-type braced frames to set up the restoring force characteristics. From the experimental observations, it was seen that specimens with smaller slenderness ratio showed hysteresis behavior of stable spindle shape, while those with larger slenderness ratio exhibited a tendency to the hysteresis behavior of pinching shape. Consequently, the simplified restoring force characteristics used in design were set up with hysteresis characteristics as a superposed model of complete elasto-plastic type and pinching type.
一般社団法人日本建築学会の論文
1991-03-15