Numerical and experimental investigation of the effect of wind load on spherical domes, focusing on the type of roof covering

Articles in Press

Document Type : Research Article

Authors

1 Department of Civil Engineering, Damghan Branch, Islamic Azad University, Damghan, Iran

2 MS.c Student, Department of Civil Engineering, Damghan Branch, Islamic Azad University, Damghan, Iran

3 department of electrical engineering, damghan branch, islamic azad university,damghan, iran

Abstract

In today's architecture, the use of space structures is very common and has attracted the attention of designers. Various forms of these structures can be seen in architectural designs and structures, and one of these types of structures is spherical domes. To calculate the wind load on all structures, one of the most important coefficients required is the wind pressure coefficient (Cp), which actually considers the effect of the geometry of the structure in the calculation of the wind load on the structure. In the loading codes, the coefficient (Cp) is provided for some geometries. In this article, the effect of wind load on spherical domes with three height-to-span ratios of 0.25, 0.5 and 0.75 has been investigated. Also, the effect of surface roughness has been studied in this research.The maximum of negative pressure coefficients (suction) for domes with a height to span ratio of 0.25, 0.5, and 0.75 are obtained as -0.86, -1.07, and -1.22, respectively. In domes that have protrusions in the covering roofs, these protrusions cause a general change in the wind pressure coefficients compared to the wind pressure coefficients in the domes with a the covering becomes without protrusions; Therefore, the most effective position of the projection is when the projection of the dome is placed at an angle of 90 degrees to the direction of the wind (=90°), in which case the pressure coefficients jump from negative values to positive values to Cp=+0.7 it arrives.

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Amirkabir Journal of Civil Engineering

Articles in Press, Accepted Manuscript
Available Online from 05 June 2025

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