Numerical and Experimental Investigation of the Effect of Wind Load on Spherical Domes, Focusing on the Type of Roof Covering

Document Type : Research Article

Authors

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

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

3 Department of Civil 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 (q=90°), in which case the pressure coefficients jump from negative values ​​to positive values ​​to Cp=+0.7 it arrives

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References

[1]  S. Vinothni, P. Sangeetha, Space Frame Structure as Roof and Floor System—A Review, Sustainable Practices and Innovations in Civil Engineering: Select Proceedings of SPICE 2021,  (2022) 291-298.
[2] P.K. Goyal, S. Kumari, S. Singh, R.K. Saroj, R.K. Meena, R. Raj, Numerical study of wind loads on Y plan-shaped tall building using CFD, Civil Engineering Journal, 8(2) (2022) 263-277.
[3] F. Rezaeinamdar, M. Sefid, H. Nooshin, Numerical and experimental investigation of wind pressure coefficients on scallop dome, Int. J. Optim. Civil Eng, 12(3) (2022) 313-334.
[4] H. Sadeghi, M. Heristchian, A. Aziminejad, H. Nooshin, Wind effect on grooved and scallop domes, Engineering Structures, 148 (2017) 436-450.
[5] M.J. Park, S.W. Yoon, Y.C. Kim, D.J. Cheon, Wind pressure characteristics based on the rise–span ratio of spherical domes with openings on the roof, Buildings, 12(5) (2022) 576.
[6] J.H. Lee, Y.C. Kim, D.J. Cheon, S.W. Yoon, Wind pressure characteristics of elliptical retractable dome roofs, Journal of Asian Architecture and Building Engineering, 21(4) (2022) 1561-1577.
[7] A. Verma, R.K. Meena, R. Raj, A.K. Ahuja, Experimental investigation of wind induced pressure on various type of low-rise structure, Asian Journal of Civil Engineering, 23(8) (2022) 1251-1265.
[8] L. Pagnini, S. Torre, A. Freda, G. Piccardo, Wind pressure measurements on a vaulted canopy roof, Journal of Wind Engineering and Industrial Aerodynamics, 223 (2022) 104934.
[9] T. Taylor, Wind pressures on a hemispherical dome, Journal of Wind Engineering and Industrial Aerodynamics, 40(2) (1992) 199-213.
[10] N. Kharoua, L. Khezzar, Large eddy simulation study of turbulent flow around smooth and rough domes, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 227(12) (2013) 2686-2700.
[11] P. Zhou, B. Tang, P. Liu, G. Zheng, Study on wind load distribution on the surface of dome structure based on CFD numerical simulation, in:  Journal of Physics: Conference Series, IOP Publishing, 2019, pp. 052056.
[12] S. Nie, X. Zhou, Y. Shi, C. Gou, T. Zhou, Wind tunnel test on wind load characteristic of low-rise sloping roof buildings, Jianzhu Jiegou Xuebao(Journal of Building Structures), 33(3) (2012) 118-125.
[13] S. Khosrowjerdi, H. Sarkardeh, Effect of wind load on combined arches in dome buildings, The European Physical Journal Plus, 137(2) (2022) 227.
[14] X. Sun, K. Arjun, Y. Wu, Investigation on wind tunnel experiment of oval-shaped arch-supported membrane structures, Journal of Wind Engineering and Industrial Aerodynamics, 206 (2020) 104371.
[15] N. Su, S. Peng, Y. Uematsu, Reynolds number effects on the wind pressure distribution on spherical storage tanks, Journal of Wind Engineering and Industrial Aerodynamics, 208 (2021) 104464.
[16] A. Sheikh Aleslami, H. Sadeghi, Effect of wind load on Milad Tower and adjacent buildings case study: shed adjacent to tower, Iranica Journal of Energy & Environment, 14(3) (2023) 289-300.
[17] E. Rajabi, H. Sadeghi, M.R. Hashemi, Wind effect on building with Y-shaped plan, Asian Journal of Civil Engineering, 23(1) (2022) 141-151.
[18] H. Sadeghi, M. Heristchian, A. Aziminejad, H. Nooshin, CFD simulation of hemispherical domes: structural flexibility and interference factors, Asian Journal of Civil Engineering, 19(5) (2018) 535-551.
[19] U. Manual, ANSYS FLUENT 12.0, Theory Guide, 67 (2009).
[20] J. Bardina, P. Huang, T. Coakley, J. Bardina, P. Huang, T. Coakley, Turbulence modeling validation, in:  28th Fluid dynamics conference, 1997, pp. 2121.
[21] W.P. Jones, B.E. Launder, The prediction of laminarization with a two-equation model of turbulence, International journal of heat and mass transfer, 15(2) (1972) 301-314.
[22] B.E. Launder, B.I. Sharma, Application of the energy-dissipation model of turbulence to the calculation of flow near a spinning disc, Letters in heat and mass transfer, 1(2) (1974) 131-137.
Amirkabir Journal of Civil Engineering
Volume 57, Issue 4
2025
Pages 677-694

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