Dry galloping characteristic and vibration control of inclined stay cable

機関リポジトリ

この論文をさがす

説明

First International Symposium on Flutter and its Application (May 15-17, 2016. Mielparque-tokyo), Minato-ku, Tokyo, Japan

The rain and wind induced vibration (RWIV) and the dry galloping (DG) of the stay cables of cable-stayed bridges are greatly concerning issue for their safety. A numerous studies have been carried out to clarify their generation mechanism and to aerodynamically stabilize those. Recently the authors [1] pointed out that extremely complex RWIV and DG might be excited by the unsteady behavior of the separation bubble (SB) on the cable surface, it means its formation and its destruction (burst) at the particular situations, such as the water rivulet location, the intensity of the axial flow in a near wake of an inclined cable and the critical Reynolds number regime, in similar with the airfoil-stall. Their aerodynamic instabilities are called as stall-type galloping (STG). Based upon this scenario on the generation mechanism, the positive promotion of flow separation to interrupt the formation of SB might effectively stabilize RWIV and DG. The wind tunnel tests have been, in consequence, conducted by the use of rigid cable model with the proto-type size in diameter by installing the large size double helical fillets to verify for their aerodynamic stabilization effect. Furthermore, DG mechanism at the critical Reynolds number regime of the non-yawed cable has been investigated in comparison of the stationary and fluctuating lift forces and the stationary drag force with the cross-flow response of the both cases of non-yawed cable and the yawed cable without/with the double helical fillets.

形態: 図版あり

Physical characteristics: Original contains illustrations

資料番号: AA1630046068

レポート番号: JAXA-SP-16-008E

収録刊行物

キーワード

詳細情報 詳細情報について

  • CRID
    1050011086257229952
  • NII論文ID
    120006827522
  • NII書誌ID
    AA11984031
  • ISSN
    1349113X
  • Web Site
    http://id.nii.ac.jp/1696/00003455/
  • 本文言語コード
    en
  • 資料種別
    conference paper
  • データソース種別
    • IRDB
    • CiNii Articles

問題の指摘

ページトップへ