Wind effects on long-span bridges: Probabilistic wind data format for buffeting and VIV load assessments

1st Conference of Computational Methods in Offshore Technology

计算机科学

Hoffmann, K.^1 ; Srouji, R.G.^1 ; Hansen, S.O.^1,2

Svend Ole Hansen ApS, Sankt Jørgens Allé 5C, Copenhagen V

1615, Denmark^1

SOH Wind Engineering LLC, 141 Leroy Road, Williston

VT

05495, United States^2

关键词: Buffeting response;    Level of safeties;    Long-span bridge;    Physical quantities;    Response measurement;    Technology development;    Wind tunnel tests;    Wind turbulence;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/276/1/012005/pdf
DOI  :  10.1088/1757-899X/276/1/012005

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The technology development within the structural design of long-span bridges in Norwegian fjords has created a need for reformulating the calculation format and the physical quantities used to describe the properties of wind and the associated wind-induced effects on bridge decks. Parts of a new probabilistic format describing the incoming, undisturbed wind is presented. It is expected that a fixed probabilistic format will facilitate a more physically consistent and precise description of the wind conditions, which in turn increase the accuracy and considerably reduce uncertainties in wind load assessments. Because the format is probabilistic, a quantification of the level of safety and uncertainty in predicted wind loads is readily accessible. A simple buffeting response calculation demonstrates the use of probabilistic wind data in the assessment of wind loads and responses. Furthermore, vortex-induced fatigue damage is discussed in relation to probabilistic wind turbulence data and response measurements from wind tunnel tests.