| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a spiral rod which has a wide wind receiving area in a gentle wind region, in which current capacity is considered, has a narrow wind receiving area in a strong wind region in which strength design is considered, and satisfies both wind-resistant strength design and current capacity design. SOLUTION: To the surface of the spiral rod, heat-radiating fins are fitted, interposing a supporting member which temporarily deforms by a wind load between.</p> |
