| 摘要 |
PROBLEM TO BE SOLVED: To provide seismic controlling support structure for a ground-based installation capable of damping vibration energy working on the ground-based installation at a low cost and of surely preventing its fatigue or damage. SOLUTION: Between a sign column 18 in a sign 14 and a holding member 20, a ultra high damping rubber body 26 constructed of ultra high damping rubber with a high loss factor is arranged. The ultra high damping rubber body 26 is elastically deformed according to a relative shift between the sign 14 and the holding member 20 so as to absorb relative shift energy, so that fatigue or damage of the sign 14 can be surely prevented. The sign 14 can be formed without any consideration of fatigue or damage, so that high strength is not required and the cost is lowered. A display board 16 can be prevented from dropping because looseness or rattle in a fixing member such as a bolt fixing the display board 16 to the sign column 18 is prevented.
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