Deformed Shape Wind Analysis of Tensile Membrane Structures
Publication: Journal of Structural Engineering
Volume 142, Issue 3
Abstract
Conventionally, the pressure coefficients of tensile membrane structures are determined in wind tunnels on rigid models and the effect of the typically large deformations of the membranes on the pressure coefficients is not taken into account. The aim of the current research is to analyze the effect of the displacements of membrane structures on the pressure coefficients. A more precise wind analysis is introduced in this paper. Two rigid models were analyzed in a wind tunnel: the model of the unloaded construction shape, and the model of the deformed shape of the membrane under wind loads. The deformed shape was determined with the dynamic relaxation method on the basis of the pressure coefficients obtained from the construction shape subjected to wind loads. The two pressure coefficient fields, the corresponding membrane stresses and displacements are introduced and compared in this paper. Results show that the displacements of the membrane under wind load can result in significant differences of the pressure coefficients maximum values. Conversely, the introduced analysis and the determination of the pressure coefficients of the deformed shape improve the accuracy of the wind analysis of tensile membrane structures.
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Acknowledgments
This paper was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences. Part of the research was supported by the Hungarian-Mexican Intergovernmental S & T Programme (NKTH) No. MX-7/2007.
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Information
Published In
Journal of Structural Engineering
Volume 142 • Issue 3 • March 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Mar 30, 2015
Accepted: Sep 12, 2015
Published online: Oct 26, 2015
Published in print: Mar 1, 2016
Discussion open until: Mar 26, 2016
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