830 水平・上下同時振動を受けた回転慣性を有するT字型一本足高架桁の振動応答(GS-10 振動一般(2))

抄録

The Up and Down motion of the earthquake is usually smaller than the Horizontal motion of it. Therefore, in generally, seismic designs of general structures have been done with the attention to the Horizontal motion so far. However, the special structures such as the Elevated-High Way of T-Shaped Mono Column with the large rotary-inertia at the column top will suffer from large effects to the vibration response in case the Up and Down motion put upon the Horizontal motion, especially the excited frequency ratio of vertical and horizontal is 2:1. Authors verified experimentally that the Elevated-High Way of T-shaped Mono-Column would vibrate very largely when they suffered from Up and Down motion and Horizontal one simultaneously at the earthquake.