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

[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.

[发布机构] 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

[学科分类] 计算机科学（综合）

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