Wind pressure characteristics of elliptical retractable dome roofs

Lee, Jong Ho; Kim, Yong Chul; Cheon, Dong Jin; Yoon, Sung Won

doi:10.1080/13467581.2021.1941996

Cited by 6 publications

(1 citation statement)

References 8 publications

(3 reference statements)

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“…The wind load code (AIJ-RLB (2015)) used for the comparison was the average of ten ensembles. Therefore, to obtain an accurate comparison, ten ensemble average values were analyzed [13][14][15]. Further, the moving average time was 1 s, which was the same as that of the wind load code.…”

Section: Pressure Coefficient Definitionsmentioning

confidence: 99%

Experimental Investigation of Wind Pressure Characteristics for Cladding of Dome Roofs

et al. 2021

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Cladding for dome roofs is often made of membrane materials that are light and easy to install. Due to these characteristics, wind damage to dome roof cladding is very common. In particular, open or retractable dome roofs are prone to wind damage because of inadequacies in wind load calculations. In this study, the wind pressure characteristics of a dome with a central opening were investigated. Wind tunnel tests were performed, and the pressure distribution was investigated by analyzing external and internal pressure coefficients. Based on the experimental results, the peak net pressure coefficients for the cladding design of a dome roof with a central opening were proposed. For the external peak pressure coefficients, the values of leeward regions were similar despite height–span ratios and turbulence intensity values. For the internal peak pressure coefficients, negative pressure was dominant, and the coefficients were not significantly affected by changes in height–span ratio. This tendency locally increased the negative peak net pressure, in which the load acts in the upward direction, and relatively significantly increased the positive peak net pressure, in which the load acts in the downward direction.

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Section: Pressure Coefficient Definitionsmentioning

confidence: 99%

Experimental Investigation of Wind Pressure Characteristics for Cladding of Dome Roofs

et al. 2021

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Spatial Wind Flow Load and Shape Optimization for Folding Grid Shell Buildings

Li,

Zhao

2023

IEEE Access

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Wind-related disasters have emerged as a significant natural threat to humanity. This heightened concern necessitates careful consideration of the aerodynamic intricacies inherent in the surface characteristics of foldable reticulated shell houses, with particular attention paid to the substantial influence of wind loads. The objective of this study is to examine the spatial properties of foldable lattice shell houses through the establishment of a numerical wind tunnel model and subsequent simulations. The paper begins with an introduction to the CFD method, outlining its operational procedure. It further deduces the physical conservation principles governing mass and momentum, thereby establishing the relevant control equations. Additionally, the analysis encompasses the application of non-equilibrium wall conditions for the accurate calculation of building surface and ground wall motion and force characteristics. Finally, numerical simulations are performed on the foldable lattice shell house space, offering an effective tool and methodology for investigating wind pressure distribution and its implications. Through comparative analysis, it was determined that the optimized plan 18 with a rise-to-span ratio of 1/3, an end door inclination of 45º, and an end door height of 1/4 had better wind resistance performance. This plan reduced the gap between positive and negative pressure zones, improved the uniformity of surface wind pressure distribution, and weakened the wind loads' impact on the house. The research results indicated that reducing the rise-to-span ratio, end door inclination angle, and end door height can effectively improve the wind resistance performance of foldable lattice shell houses. The research on wind-induced response, numerical wind tunnel simulation, and shape optimization of foldable reticulated shell structures has certain innovation, and has important theoretical significance and engineering application value for the development of new camping foldable reticulated shells and wind resistance design of similar light houses.

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Wind Pressure Characteristics Based on the Rise–Span Ratio of Spherical Domes with Openings on the Roof

et al. 2022

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Wind loads are a primary concern in dome roof structures with openings such as retractable dome roofs. This is because the openings can cause damage to the cladding owing to high internal pressure. In this study, the wind pressure characteristics of a dome with an opening that varied based on the opening, rise–span ratio, and height span were examined by comparing the results from wind tunnel tests with those from previous studies. The negative pressure dominated the internal pressure of the roof in all regions and was not significantly affected by changes in the rise–span and height–span ratios. The reattachment distance of the windward region increased as the rise–span ratio increased, increasing the negative net pressure and decreasing the positive net pressure owing to a relatively large vortex. The roof inclination angle of the leeward region decreased as the rise–span ratio decreased, resulting in a decrease in the negative net pressure and an increase in the positive net pressure owing to a relatively small vortex. Based on the experimental results, a peak net pressure coefficient for cladding design was proposed for an open dome roof with a rise–span ratio of 0.05.

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Wind pressure characteristics of elliptical retractable dome roofs

Cited by 6 publications

References 8 publications

Experimental Investigation of Wind Pressure Characteristics for Cladding of Dome Roofs

Experimental Investigation of Wind Pressure Characteristics for Cladding of Dome Roofs

Spatial Wind Flow Load and Shape Optimization for Folding Grid Shell Buildings

Wind Pressure Characteristics Based on the Rise–Span Ratio of Spherical Domes with Openings on the Roof

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