Experimental study of wind load on a container crane located in a uniform flow and atmospheric boundary layers

The effects of oncoming atmospheric boundary layers and boom position on wind load acting on a container crane were tested in this study. A 1/150 scale-downed model of a container crane was embedded in a wind-tunnel test section. The wind environment nearby the container crane located in a port was...

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Bibliographic Details
Published in:Engineering structures 2008-07, Vol.30 (7), p.1913-1921
Main Authors: Kang, Jong-Hoon, Lee, Sang-Joon
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric boundary layer
Boom position
Building structure
Buildings. Public works
Climatology and bioclimatics for buildings
Computation methods. Tables. Charts
Construction (buildings and works)
Container crane
Exact sciences and technology
High rise structure
Structural analysis. Stresses
Wind load
Yaw angle
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Summary:The effects of oncoming atmospheric boundary layers and boom position on wind load acting on a container crane were tested in this study. A 1/150 scale-downed model of a container crane was embedded in a wind-tunnel test section. The wind environment nearby the container crane located in a port was simulated as a uniform flow and two types of atmospheric boundary layer (ABL) for an open coast ( n = 1 / 10 ) and an open terrain ( n = 1 / 7 ) . Wind load acting on the container crane model was measured using a 7-component balance with varying wind directions (yaw angle). Reynolds number effect on the aerodynamic coefficients was investigated with varying Reynolds number. Drag and pitching-moment coefficients have maximum values at the yaw angles of θ = ± 3 0 ∘ , ±150 ∘, and minimum values at θ = ± 9 0 ∘ . For the simulated ABL conditions, the drag coefficient is reduced about 19%–25% on the average, compared to that in a uniform flow. However, the pitching moment in ABLs is about 10% on the average larger than that of a uniform flow. As the yaw angle increases, the drag and pitching-moment coefficients at boom-up condition are increased about 9%–14% and 37%–44%, respectively, compared with those in boom-down condition. In addition, the maximum wind load is reduced about 14% in the case of open-coast ABL and about 20% for the open-terrain ABL, compared to that in a uniform flow.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2007.12.013