The standard approach for the equivalent static analysis of line-like structures, based on the gust factor, is reviewed, with special reference to the case of systems with intermediate elastic supports, like cable-stayed masts. For this class of structures the first modal shape exhibits an inversion point and the effect of the upper modes cannot be neglected. A new analysis method, based on the definition of a gust function variable along the height is proposed and applied to a case study. The results are compared with those obtained using the patch load method and the direct integration of the equations of motion which accounts for geometric nonlinearity.

A simplified approach to the wind response analysis of cable-stayed masts

MATERAZZI, Annibale Luigi;VENANZI, ILARIA
2007

Abstract

The standard approach for the equivalent static analysis of line-like structures, based on the gust factor, is reviewed, with special reference to the case of systems with intermediate elastic supports, like cable-stayed masts. For this class of structures the first modal shape exhibits an inversion point and the effect of the upper modes cannot be neglected. A new analysis method, based on the definition of a gust function variable along the height is proposed and applied to a case study. The results are compared with those obtained using the patch load method and the direct integration of the equations of motion which accounts for geometric nonlinearity.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/158305
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