3D aerodynamic admittances of streamlined box bridge decks

Ma, Cunming; Wang, Junxin; Li, Q.S.; Liao, Haili

doi:10.1016/j.engstruct.2018.11.007

Cited by 43 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, by introducing the empirical model of aerodynamic admittance function (AAF) correction factor, the 2D AAF of typical bridge sections are directly identified in turbulent flow, which provides an important basis for the refined analysis of buffeting forces for long-span bridges (Li et al 2019f). Based on the results of pressure measurements on the streamlined box girders via wind tunnel test, Ma et al (2019) established an empirical model of 3D AAF accounting for the 3D effects of turbulence. As the prototype bridges are in a vibrating state, Yan et al (2019a) proposed a testing method to separate aerodynamic force into self-excited force and buffeting force.…”

Section: Wind Resistance Of Bridgementioning

confidence: 99%

“…Liu and Lei (2019) investigated the static three-component force coefficient of typical double-layer truss girder by wind tunnel test and CFD simulation. The influence of Reynolds number is analyzed, and the recommended value for identifying the lowest Reynolds number of the third component coefficient at high wind angle of attack is proposed; Ma et al (2019) and Li et al (2019f) proposed the identification method of aerodynamic admittance by carrying out wind tunnel tests on the 2D and 3D streamlined box girder section.…”

Section: Wind-vehicle-bridge Dynamicsmentioning

confidence: 99%

See 1 more Smart Citation

Review of annual progress of bridge engineering in 2019

Zhao

Yuan

Wei

et al. 2020

ABEN

Self Cite

View full text Add to dashboard Cite

Bridge construction is one of the cores of traffic infrastructure construction. To better develop relevant bridge science, this paper introduces the main research progress in China and abroad in 2019 from 13 aspects, including concrete bridges and the high-performance materials, the latest research on steel-concrete composite girders, advances in box girder and cable-supported bridge analysis theories, advance in steel bridges, the theory of bridge evaluation and reinforcement, bridge model tests and new testing techniques, steel bridge fatigue, wind resistance of bridges, vehicle-bridge interactions, progress in seismic design of bridges, bridge hydrodynamics, bridge informatization and intelligent bridge and prefabricated concrete bridge structures.

show abstract

Section: Wind Resistance Of Bridgementioning

confidence: 99%

Section: Wind-vehicle-bridge Dynamicsmentioning

confidence: 99%

Review of annual progress of bridge engineering in 2019

Zhao

Yuan

Wei

et al. 2020

ABEN

Self Cite

View full text Add to dashboard Cite

show abstract

“…The AAF of a bridge deck is the relation between the auto spectrum of the buffeting force S FF and the velocity component S aa . The buffeting forces can be measured by pressure measurements (Larose & Mann, 1998;Ma et al, 2019) or force-balance measurements (Gu & Qin, 2004;Larose, 1999;Matsuda et al, 1999). To identify all six AAF components, many researchers have carried out extensive research over the past several years.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of wind turbulence by DSRFG and identification of the aerodynamic admittance of bridge decks

Chen

Zhu

2020

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

Discretizing and synthesizing random flow generation (DSRFG) is applied to generate inflow turbulence satisfying large eddy simulation (LES) requirements for bridge wind engineering. The variation of the turbulent wind along the computational domain is investigated considering multiple grid sizes and time steps. The aerodynamic admittance functions (AAFs) of a thin plate and two bridge sections are evaluated. Turbulence properties are well maintained from the inlet downstream in the windward direction. The grid resolution minorly affects the along-wind profiles of the mean velocity and turbulence intensity, but it greatly influences the wind spectra. The turbulence energy of the wind spectra may decay in the high-frequency range, which can be improved by applying finer grids and small time steps. Reasonable grid and time step size are suggested to provide stable turbulent wind flow along the computational domain. Fairly good agreement between the estimated AAFs of the thin plate and the Sears function validate the feasibility of LES in predicting the AAFs. The AAFs of the bridge sections are different from the Sears function. The contributions of the longitudinal and vertical velocity components to the buffeting forces are not equal, and it is inappropriate to employ one equivalent AAF for each force component.

show abstract

“…Mattuella et al (2016) conducted the same types of wind tunnel topographic experiments by using a hot wire anemometer. Particle image velocimetry has also been employed in wind tunnel experiments by several researchers (Lange et al, 2017; Ma et al, 2019b; Rasouli et al, 2009) to obtain wind data for large areas or bridge engineering. However, the cost is higher than that of point measuring tools.…”

Section: Introductionmentioning

confidence: 99%

Influence of elevated water levels on wind field characteristics at a bridge site

Jing

Liao

et al. 2019

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

The influence of elevated water levels on wind field characteristics at bridge sites owing to hydroelectric power stations plays an important role in bridge engineering, particularly in mountainous valley regions. To investigate this issue, a comparative experimental study, which uses a topographic model with two water level states for determining the influence on wind field characteristics at the proposed bridge site located in a mountainous valley area, was conducted in the XNJD-3 wind tunnel at Southwest Jiaotong University, Chengdu, PR China. The altitude difference between the two water level states was approximately 200 m, whereas uniform and D-type boundary layer air inflow conditions were adopted during the wind tunnel test, respectively. The wind speed at the bridge girder and profile of the 1/4, mid, and 3/4 spans were recorded during the experiment. The test results indicated that after the water level was raised, the mean wind speed (or speed-up factor) along the bridge girder decreased by approximately 10%, and the values of the wind profile also decreased. However, the wind profile curve shapes remained approximately unchanged, and the wind attack angle was significantly transformed by approximately 5° in certain locations of the bridge girder. Moreover, the variation in the water level had a negligible influence on the turbulence intensities, turbulence integral length scales, probability distribution of fluctuating wind components, and turbulent wind spectra along the bridge girder. Therefore, as the water level in the canyon rises, the wind field characteristics at the bridge site tend to be conducive to bridge safety. Therefore, long-span bridges located in mountainous valley areas should be designed appropriately according to the expected minimum water level of the river.

show abstract

3D aerodynamic admittances of streamlined box bridge decks

Cited by 43 publications

References 16 publications

Review of annual progress of bridge engineering in 2019

Review of annual progress of bridge engineering in 2019

Numerical simulation of wind turbulence by DSRFG and identification of the aerodynamic admittance of bridge decks

Influence of elevated water levels on wind field characteristics at a bridge site

Contact Info

Product

Resources

About