2013 Fiscal Year Final Research Report

Study on a countermeasure against vortex-induced vibration of bridge girders using plasma actuators

Research Project

Project/Area Number	24656280
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Single-year Grants
Research Field	Structural engineering/Earthquake engineering/Maintenance management engineering
Research Institution	Kyushu Institute of Technology
Principal Investigator	MATSUDA Kazutoshi 九州工業大学, 工学(系)研究科(研究院), 教授 (20609466)
Project Period (FY)	2012-04-01 – 2014-03-31
Keywords	風工学 / 耐風工学 / 橋梁 / 風洞試験 / プラズマアクチュエータ / 渦励振 / 制振 / 流れの可視化
Research Abstract	In order to suppress wind-induced vibrations of bridge girders, two general methods are applied: aerodynamic and mechanical countermeasures. In this study, a new approach to suppress wind-induced vibrations, "a dielectric barrier discharge (DBD) plasma actuator", was investigated through wind tunnel experiments to determine its potential as a device for flow control around bridge deck sections. In this study, it was found that there is a possibility that DBD plasma actuators could be used in the future as the devices for suppressing wind-induced vibrations of bridge girders.