Vortex-Induced Vibrations on Cross Sections in Tandem Arrangement

Corriols, Abraham Sánchez; Morgenthal, Guido

doi:10.2749/101686614x13830788505603

Cited by 4 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the basis of theoretical analysis, finite element software can be used to analyze the effects of catwalks on the vibration of suspension bridges [16][17][18][19][20]. Previous studies indicate that drag and lift coefficients are important parameters used to judge whether galloping phenomenon could occur to structure [21,22].…”

Section: Introductionmentioning

confidence: 99%

Influence of catwalk design parameters on the galloping of constructing main cables in long-span suspension bridges

Guo¹,

Li²,

Wang³

et al. 2017

J. vibroeng.

View full text Add to dashboard Cite

A main cable of a long-span suspension bridge is semi-surrounded by a catwalk during construction. Thus, design parameters of a catwalk may have influences on the galloping stability of a main cable during construction. To study the influence of catwalk design parameters on the galloping of steepled main cables, two main foci have been conducted. Firstly, the aerodynamic coefficients of the catwalk with actual design parameters are obtained by numerical simulation based on computational fluid dynamics (CFD), and the numerical results are compared with those of the previous wind tunnel test. Several typical main cables with different cross sections of a long-span suspension bridge during construction are selected, and their Den Hartog coefficients are obtained based on the numerical simulation considering the aerodynamic influences of the catwalks. Then four typical working conditions of a main cable which have great potential to occur galloping are selected based on the galloping analyze, and their aerodynamic coefficients considering the influence of the catwalk with different design parameters are obtained. The influence of the catwalk design parameters on galloping of the main cables is analyzed based on the Den Hartog criterion. Results indicate that catwalk design parameters have evident influences on aerodynamic coefficients and galloping of the main cables. The parameters of the catwalk which are favorable for suppressing the galloping of the main cables are determined, which establish a good guideline for the galloping-resistant design of the catwalk-main cable system on suspension bridges.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of catwalk design parameters on the galloping of constructing main cables in long-span suspension bridges

Guo¹,

Li²,

Wang³

et al. 2017

J. vibroeng.

View full text Add to dashboard Cite

show abstract

Methods for controlling the local spatial and temporal resolution of vortex particle simulations of bluff body aerodynamics problems

Milani

Morgenthal

2018

Computers & Fluids

View full text Add to dashboard Cite

Prediction of aeroelastic response of bridge decks using artificial neural networks

Abbas

Kavrakov

Morgenthal

et al. 2020

Computers & Structures

Self Cite

View full text Add to dashboard Cite

The assessment of wind-induced vibrations is considered vital for the design of long-span bridges. The aim of this research is to develop a methodological framework for robust and efficient prediction strategies for complex aerodynamic phenomena using hybrid models that employ numerical analyses as well as meta-models. Here, an approach to predict motion-induced aerodynamic forces is developed using artificial neural network (ANN). The ANN is implemented in the classical formulation and trained with a comprehensive dataset which is obtained from computational fluid dynamics forced vibration simulations. The input to the ANN is the response time histories of a bridge section, whereas the output is the motion-induced forces. The developed ANN has been tested for training and test data of different cross section geometries which provide promising predictions. The prediction is also performed for an ambient response input with multiple frequencies. Moreover, the trained ANN for aerodynamic forcing is coupled with the structural model to perform fully-coupled fluid-structure interaction analysis to determine the aeroelastic instability limit. The sensitivity of the ANN parameters to the model prediction quality and the efficiency has also been highlighted. The proposed methodology has wide application in the analysis and design of long-span bridges.

show abstract

Vortex-Induced Vibrations on Cross Sections in Tandem Arrangement

Cited by 4 publications

References 3 publications

Influence of catwalk design parameters on the galloping of constructing main cables in long-span suspension bridges

Influence of catwalk design parameters on the galloping of constructing main cables in long-span suspension bridges

Methods for controlling the local spatial and temporal resolution of vortex particle simulations of bluff body aerodynamics problems

Prediction of aeroelastic response of bridge decks using artificial neural networks

Contact Info

Product

Resources

About