Determination of flutter derivatives for a box-girder bridge deck through URANS simulations

被引：0

作者：

Mannini, Claudio ^{[1
]}

Sbragi, Gabriele ^{[1
]}

Schewe, Guenter ^{[2
]}

Borri, Claudio ^{[1
]}

机构：

[1] Univ Florence, CRIACIV, Dept Civil & Environm Engn, I-50139 Florence, Italy

[2] German Aerosp Ctr DLR, Inst Aeroelast, D-37073 Gottingen, Germany

来源：

PROCEEDINGS OF THE 8TH INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS, EURODYN 2011 | 2011年

关键词：

Bridges; Wind; Flutter; Flutter derivatives; Computational Fluid Dynamics; Unsteady RANS; MODELS; RANS;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper the results of two-dimensional numerical simulations of the flow field around a box-girder bridge section of common geometry while it undergoes heaving or pitching harmonic oscillations are presented. Unsteady Reynolds-averaged Navier-Stokes equations are solved in conjunction with an eddy-viscosity and an explicit algebraic Reynolds stress model for turbulence modelling. The flutter derivatives at high Reynolds number for the bridge section considered are determined and compared with wind-tunnel results showing reasonable agreement. The key role played on the aeroelastic behavior of the profile by the degree of sharpness of the deck lower edges is highlighted. The influence on the self-excited forces of the amplitude of vibration is also investigated.

引用

页码：1473 / 1480

页数：8

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