Experimental Determination of the Aerodynamic Admittance of a Bridge Deck Segment

Larose, Guy L.

doi:10.1006/jfls.1999.0244

Cited by 49 publications

(13 citation statements)

References 8 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Usually, the equivalent AAF method, or the autospectral method, is applied to identify the AAF for a bridge segment model based on fluctuating aerodynamic force and fluctuating wind velocity [16,19,25]. This method assumes that two AAFs (χ iu , χ iw , i = D, L, M) in each S i related to the same force component and wind velocities along u and w are equal to each other, i.e.,χ iu = χ iw = χ i .…”

Section: Aerodynamic Admittance Identification Methodologymentioning

confidence: 99%

See 1 more Smart Citation

Identification and Application of the Aerodynamic Admittance Functions of a Double-Deck Truss Girder

2019

View full text Add to dashboard Cite

This paper presents the aerodynamic admittance functions (AAFs) of a double-deck truss girder (DDTG) under turbulent flows. The objective of the investigation is to identify AAFs using a segment model wind tunnel test. All of the wind tunnel tests were based on the force measurement method and conducted in a passive spire-generated turbulent flow. The segment model adopts a typical DDTG section and is tested in the service and construction stages under 0°, 3°, and 5° wind attack angles. Furthermore, a nonlinear expression is put forward to fit the identified AAFs. The buffeting responses of a long-span road-rail cable-stayed bridge are then calculated for both the service and construction stages using an equivalent ‘fish-bone’ finite element model of the DDTG. The unsteady effect of the buffeting force is considered based on quasi-steady buffeting theory using the identified AAFs. The calculated buffeting responses are finally compared with those for two other AAFs (AAF = 1.0 and the Sears function). The results indicate that the traditional AAFs overestimate vibrations in the vertical and torsional directions but underestimate vibrations in the lateral direction. The identified AAFs of the DDTG can be regarded as a reference for wind-resistant designs with similar girder sections.

show abstract

Section: Aerodynamic Admittance Identification Methodologymentioning

confidence: 99%

“…For truss girders, studies focused on the AAF are relatively few and have no universality due to the various geometric details. Larose [19] directly measured the admittance of a truss girder in a wind tunnel test. Sato [20] gave the admittance of a stiffening truss girder of the Akashi Kaikyo Bridge.…”

Section: Introductionmentioning

confidence: 99%

Identification and Application of the Aerodynamic Admittance Functions of a Double-Deck Truss Girder

2019

View full text Add to dashboard Cite

show abstract

“…During the last two centuries, major structural failures due to the wind action have occurred, for instance, the collapse of the Tacoma Narrows Bridge in 1940, which have provoked much interest on investigating the wind effect on bridges (Davenport et al 1971, Simiu and Scanlan 1996, Bucher and Lin 1988, 1989, Larose 1999. The wavelike motion of Volgograd Bridge (BBC News 2010) due to the local wind at some particular wind speeds further highlights the importance of wind effects on bridges even without causing bridge failures.…”

Section: Bridge and Vehicle Aerodynamicsmentioning

confidence: 99%

A coupled wind-vehicle-bridge system and its applications: a review

Cai¹,

Hu²,

Chen³

et al. 2015

Wind and Structures

View full text Add to dashboard Cite

The performance of bridges under strong wind and traffic is of great importance to set the traveling speed limit or to make operational decisions for severe weather, such as controlling traffic or even closing the bridge. Meanwhile, the vehicle"s safety is highly concerned when it is running on bridges or highways under strong wind. During the past two decades, researchers have made significant contributions to the simulation of the wind-vehicle-bridge system and their interactive effects. This paper aims to provide a comprehensive review of the overall performance of the bridge and traffic system under strong wind, including bridge structures and vehicles, and the associated mitigation efforts.

show abstract

“…The dynamic performance of the girder includes flutter stability and vortex-induced vibration performance, and which can be studied through the sectional model wind tunnel test or the aero-elastic model wind-tunnel test for the whole bridge [3,4,5].…”

Section: The Sectional Model Wind Tunnel Test For the Dynamic Performmentioning

confidence: 99%

Study on the Behavior of Gongan Changjiang Combined Highway and Railway Bridge under Wind

Zheng¹,

Liang²,

Zhang³

2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

View full text Add to dashboard Cite

Gongan Changjiang combined highway and railway bridge is a steel truss beam cable-stayed bridge, which main span is 518m, In this paper, the behavior of the bridge under wind is systematically studied by analysis or by wind-tunnel model test. The wind characters at bridge location are analyzed. The vibration characters of the bridge are calculated. The static aerodynamic coefficients of the main girder were measured, the flutter stability and the vortex-induced vibration performance were studied by the sectional model wind tunnel test. The aero-elastic model wind tunnel test for the completion state and the construction stage of the bridge are carried out. It is shown. the Aerodynamic stability of the main girder is satisfied. The amplitude of vortex-induced vibration and the buffeting responses are all meet the need of the national code.

show abstract

Experimental Determination of the Aerodynamic Admittance of a Bridge Deck Segment

Cited by 49 publications

References 8 publications

Identification and Application of the Aerodynamic Admittance Functions of a Double-Deck Truss Girder

Identification and Application of the Aerodynamic Admittance Functions of a Double-Deck Truss Girder

A coupled wind-vehicle-bridge system and its applications: a review

Study on the Behavior of Gongan Changjiang Combined Highway and Railway Bridge under Wind

Contact Info

Product

Resources

About