Thông tin chung

  English

  Đề tài NC khoa học
  Bài báo, báo cáo khoa học
  Hướng dẫn Sau đại học
  Sách và giáo trình
  Các học phần và môn giảng dạy
  Giải thưởng khoa học, Phát minh, sáng chế
  Khen thưởng
  Thông tin khác

  Tài liệu tham khảo

  Hiệu chỉnh

 
Số người truy cập: 55,289,700

 An optimization in using the auxiliary fillet on cable surface in various ways for controlling dry-galloping
Tác giả hoặc Nhóm tác giả: Vo Duy Hung, Hiroshi Katsuchi, Hitoshi Yamada and Mayuko Nishio
Department of Civil Engineering, Yokohama National University
Nơi đăng: 14th International Conference on Wind Engineering
abortion stories gone wrong read teenage abortion facts
cvs weekly sale cvs print prescription savings cards
; Số: 14th;Từ->đến trang: - (accepted);Năm: 2015
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT

ABSTRACT
Cable vibration can cause the fatigue in cable attachments and it is unsettling to bridge user and operator. The complicated cable aerodynamics characteristic and itself vibration mechanism have being clarified by a lot of wind tunnel test and the field of observation so far. The common vibration of cable caused by rain-wind combination has been known as most typical type and a lot kind of its countermeasures has been proposed for suppressing this phenomenon. Recently, stayed-cables were also proved that they could be excited in dry state (without rain), which is called dry-galloping. Its mechanisms have been explained by axial flow, Reynolds number and so on. In order to investigate the dry-galloping characteristics, wind tunnel test of a cable model with various wind angle was conducted, the vibration responses and surface pressure has been recorded. Then, three types of countermeasure were examined to suppress dry- galloping of bridge cable. The tests confirmed that the occurrence of dry-galloping depends on relative wind attacked angles and onset reduced wind speed. Furthermore, due to the presence of auxiliary fillet, surface pressure was redistributed. Most importantly, single helical fillet, double helical fillet and circular ring were highly effective in mitigating dry-galloping when those are installed properly.
© Đại học Đà Nẵng
 
 
Địa chỉ: 41 Lê Duẩn Thành phố Đà Nẵng
Điện thoại: (84) 0236 3822 041 ; Email: dhdn@ac.udn.vn