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A platform for research: civil engineering, architecture and urbanism
Wind-induced torsional loads on low buildings
abstract Wind-induced instantaneous pressures on low building envelopes continuously vary in temporal and spatial dimensions and this may lead to significant torsional moments on the building's lateral load resisting system. Studies on wind-induced torsional loads on low buildings are very limited. Wind-induced torsion provisions in the American Society of Civil Engineers Standard (), the National Building Code of Canada (), and the European Code () were reviewed and compared for three gabled-roof (18.4°) low buildings. Significant discrepancies were found among the provisions of these wind standards in evaluating torsional wind loads on low buildings. In addition, wind-induced torsional loads on low buildings have been measured in a boundary layer wind tunnel. Three low buildings, with the same plan dimensions but different gabled-roof angles (0°, 18.4°, 45°) and two different heights (i.e. full, and half eave building height) were tested in simulated open and urban terrain exposures for different wind directions (from 0° to 180° every 15°). The experimental results were compared with current wind-induced torsional load provisions. It was found that underestimates the torsional moments on low buildings significantly.
Highlights ► Torsion provisions in , and were compared. ► Wind tunnel tests were conducted to measure torsion on three low buildings. ► underestimates torsion on low buildings significantly.
Wind-induced torsional loads on low buildings
abstract Wind-induced instantaneous pressures on low building envelopes continuously vary in temporal and spatial dimensions and this may lead to significant torsional moments on the building's lateral load resisting system. Studies on wind-induced torsional loads on low buildings are very limited. Wind-induced torsion provisions in the American Society of Civil Engineers Standard (), the National Building Code of Canada (), and the European Code () were reviewed and compared for three gabled-roof (18.4°) low buildings. Significant discrepancies were found among the provisions of these wind standards in evaluating torsional wind loads on low buildings. In addition, wind-induced torsional loads on low buildings have been measured in a boundary layer wind tunnel. Three low buildings, with the same plan dimensions but different gabled-roof angles (0°, 18.4°, 45°) and two different heights (i.e. full, and half eave building height) were tested in simulated open and urban terrain exposures for different wind directions (from 0° to 180° every 15°). The experimental results were compared with current wind-induced torsional load provisions. It was found that underestimates the torsional moments on low buildings significantly.
Highlights ► Torsion provisions in , and were compared. ► Wind tunnel tests were conducted to measure torsion on three low buildings. ► underestimates torsion on low buildings significantly.
Wind-induced torsional loads on low buildings
Elsharawy, M. (author) / Stathopoulos, T. (author) / Galal, K. (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 104-106 ; 40-48
2012-01-01
9 pages
Article (Journal)
Electronic Resource
English
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