Passive Winglet Control of Flutter and Buffeting Responses of Suspension Bridges

被引：20

作者：

Duc-Huynh Phan ^{[1
]}

机构：

[1] HCMC Univ Technol & Educ, Fac Civil Engn, Ho Chi Minh City, Vietnam

来源：

INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS | 2018年 / 18卷 / 05期

关键词：

Flutter; buffeting; suspension bridge; passive control; winglet; LONG-SPAN BRIDGES; TUNED MASS DAMPERS; WIND-INDUCED INSTABILITIES; MECHANICALLY DRIVEN FLAPS; SLOTTED BOX-GIRDER; AERODYNAMIC CONTROL; CONTROL-SYSTEM; CENTRAL STABILIZERS; AEROELASTIC CONTROL; FLEXIBLE BRIDGES;

D O I：

10.1142/S0219455418500724

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The passive control using winglets has been considered to be an alternative solution for control of flutter and buffeting responses of long suspension bridges. This method is aimed at not only developing lightweight, reduced-cost stiffening girders without adding stiffness for aerodynamic stability, but also avoiding problems from malfunctions caused by the control and energy supply systems of active control devices by winglets. This paper presented a mechanically controlled approach using the winglets, for which a two-dimensional bridge deck model was numerically and experimentally studied. In addition, numerical research on the flutter and buffeting passive control of a 3000m span suspension bridge was carried out. The result showed that the flutter speed of the suspension bridge increases, whereas the buffeting response decreases, through the implementation of the winglets.

引用

页数：25

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