Effect of beam slope on the static aerodynamic response of edge-girder bridge-deck

Hoyeop Lee, Jiho Moon, Nakhyun Chun, Hak Eun Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

2-edge box girder bridges have been widely used in civil engineering practice. However, these bridges show weakness in aerodynamic stability. To overcome this weakness, additional attachments, such as fairing and flap, are usually used. These additional attachments can increase the cost and decrease the constructability. Some previous researchers suggested an aerodynamically stabilized 2-edge box girder section, giving a slope to the edge box instead of installing additional attachments. However, their studies are limited to only dynamic stability, even though static aerodynamic coefficients are as important as dynamic stability. In this study, focus was given to the evaluation of static aerodynamic response for a stabilized 2-edge box girder section. For this, the slopes of the edge box were varied from 0° to 17° and static coefficients were obtained through a series of wind tunnel tests. The results were then compared with those from computational fluid dynamics (CFD) analysis. From the results, it was found that the drag coefficients generally decreased with the increasing box slope angle, except for the specific box slope range. This range of box slope varied depending on the B/H ratio, and this should be avoided for the practical design of such a bridge, since it results in poor static aerodynamic response.

Original languageEnglish
Pages (from-to)157-176
Number of pages20
JournalWind and Structures, An International Journal
Volume25
Issue number2
DOIs
Publication statusPublished - 2017 Aug 1

Fingerprint

Bridge decks
Aerodynamics
Slope
Aerodynamic stability
Box girder bridges
Drag coefficient
Civil engineering
Dynamic analysis
Wind tunnels
Computational fluid dynamics
Wind Tunnel Test
Civil Engineering
Drag Coefficient
Coefficient
Computational Fluid Dynamics
Dynamic Analysis
Range of data
Costs
Angle
Decrease

Keywords

  • 2-edge box-girder bridge
  • CFD analysis
  • Static aerodynamic response
  • Wind tunnel test

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Building and Construction

Cite this

Effect of beam slope on the static aerodynamic response of edge-girder bridge-deck. / Lee, Hoyeop; Moon, Jiho; Chun, Nakhyun; Lee, Hak Eun.

In: Wind and Structures, An International Journal, Vol. 25, No. 2, 01.08.2017, p. 157-176.

Research output: Contribution to journalArticle

@article{05d5aa9dedf04ea489b9689f9d57f8ce,
title = "Effect of beam slope on the static aerodynamic response of edge-girder bridge-deck",
abstract = "2-edge box girder bridges have been widely used in civil engineering practice. However, these bridges show weakness in aerodynamic stability. To overcome this weakness, additional attachments, such as fairing and flap, are usually used. These additional attachments can increase the cost and decrease the constructability. Some previous researchers suggested an aerodynamically stabilized 2-edge box girder section, giving a slope to the edge box instead of installing additional attachments. However, their studies are limited to only dynamic stability, even though static aerodynamic coefficients are as important as dynamic stability. In this study, focus was given to the evaluation of static aerodynamic response for a stabilized 2-edge box girder section. For this, the slopes of the edge box were varied from 0° to 17° and static coefficients were obtained through a series of wind tunnel tests. The results were then compared with those from computational fluid dynamics (CFD) analysis. From the results, it was found that the drag coefficients generally decreased with the increasing box slope angle, except for the specific box slope range. This range of box slope varied depending on the B/H ratio, and this should be avoided for the practical design of such a bridge, since it results in poor static aerodynamic response.",
keywords = "2-edge box-girder bridge, CFD analysis, Static aerodynamic response, Wind tunnel test",
author = "Hoyeop Lee and Jiho Moon and Nakhyun Chun and Lee, {Hak Eun}",
year = "2017",
month = "8",
day = "1",
doi = "10.12989/was.2017.25.2.157",
language = "English",
volume = "25",
pages = "157--176",
journal = "Wind and Structures, An International Journal",
issn = "1226-6116",
publisher = "Techno Press",
number = "2",

}

TY - JOUR

T1 - Effect of beam slope on the static aerodynamic response of edge-girder bridge-deck

AU - Lee, Hoyeop

AU - Moon, Jiho

AU - Chun, Nakhyun

AU - Lee, Hak Eun

PY - 2017/8/1

Y1 - 2017/8/1

N2 - 2-edge box girder bridges have been widely used in civil engineering practice. However, these bridges show weakness in aerodynamic stability. To overcome this weakness, additional attachments, such as fairing and flap, are usually used. These additional attachments can increase the cost and decrease the constructability. Some previous researchers suggested an aerodynamically stabilized 2-edge box girder section, giving a slope to the edge box instead of installing additional attachments. However, their studies are limited to only dynamic stability, even though static aerodynamic coefficients are as important as dynamic stability. In this study, focus was given to the evaluation of static aerodynamic response for a stabilized 2-edge box girder section. For this, the slopes of the edge box were varied from 0° to 17° and static coefficients were obtained through a series of wind tunnel tests. The results were then compared with those from computational fluid dynamics (CFD) analysis. From the results, it was found that the drag coefficients generally decreased with the increasing box slope angle, except for the specific box slope range. This range of box slope varied depending on the B/H ratio, and this should be avoided for the practical design of such a bridge, since it results in poor static aerodynamic response.

AB - 2-edge box girder bridges have been widely used in civil engineering practice. However, these bridges show weakness in aerodynamic stability. To overcome this weakness, additional attachments, such as fairing and flap, are usually used. These additional attachments can increase the cost and decrease the constructability. Some previous researchers suggested an aerodynamically stabilized 2-edge box girder section, giving a slope to the edge box instead of installing additional attachments. However, their studies are limited to only dynamic stability, even though static aerodynamic coefficients are as important as dynamic stability. In this study, focus was given to the evaluation of static aerodynamic response for a stabilized 2-edge box girder section. For this, the slopes of the edge box were varied from 0° to 17° and static coefficients were obtained through a series of wind tunnel tests. The results were then compared with those from computational fluid dynamics (CFD) analysis. From the results, it was found that the drag coefficients generally decreased with the increasing box slope angle, except for the specific box slope range. This range of box slope varied depending on the B/H ratio, and this should be avoided for the practical design of such a bridge, since it results in poor static aerodynamic response.

KW - 2-edge box-girder bridge

KW - CFD analysis

KW - Static aerodynamic response

KW - Wind tunnel test

UR - http://www.scopus.com/inward/record.url?scp=85027417567&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027417567&partnerID=8YFLogxK

U2 - 10.12989/was.2017.25.2.157

DO - 10.12989/was.2017.25.2.157

M3 - Article

AN - SCOPUS:85027417567

VL - 25

SP - 157

EP - 176

JO - Wind and Structures, An International Journal

JF - Wind and Structures, An International Journal

SN - 1226-6116

IS - 2

ER -