STRUCTURAL PROPERTIES AND MODEL TESTS ON WIND LOADS AND TURBULANCE INDUCED BY A TRUSS TOWER SUPPORTING A LARGE SCALE OFFSHORE WIND TURBINE

• SEKITA Kinji

  東海大学海洋学部 海洋土木工学科

• OHMURA Yuuta

  東海大学大学院 海洋学研究科海洋工学専攻

• YAGO Kiyokazu

  海上技術安全研究所 海洋開発研究領域

• YAMASHITA Atsushi

  新日本製鐵 (株) 鉄構海洋事業部 建設・技術部

• MIYAJIMA Shogo

  (財) 日本造船技術センター

Bibliographic Information

Other Title

• 着底式大型洋上風車に供するトラスタワーの構造特性と風荷重と後流域の乱れに関する風洞実験

Abstract

The offshore wind turbines (OWTs) are getting larger in scale in order to efficiently generate the electricity. Therefore the natural period of OWT becomes longer due to heavier weight of a nacelle and higher supporting towers for OWTs, resulting in possible fatigue damage. As we estimate that the diameter of the conventional tower to be more than seven meters, the tower having large rigidity such as a truss may be alternatively required. Therefore we made a comparison of required weights and rigidities through structural analyses of the cylindrical and truss towers for 5000kW OWTs. We also conducted a 1/100 scale model test on the both towers to obtain the wind loads acting on a rotor and the tower and to examine the differences in their downstream flow. The paper describes the ascendancy of the truss over the cylindrical tower.

Journal

• PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN

  PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 22 875-880, 2006

  Japan Society of Civil Engineers

Keywords

• Offshore wind turbines
• truss tower
• wind load
• wind tunnel model test
• rigidity
• natural periods

Details

• CRID: 1390001205203859200
• NII Article ID: 130003950552
• DOI: 10.2208/prooe.22.875
• ISSN: 18848265
• ISSN: 09127348
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed