Analysis of External Peak Pressure Coefficients for Cladding in Elliptical Retractable Dome Roof by Wind Tunnel Test

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

doi:10.9712/kass.2020.20.1.49

J. Korean Assoc. Spat. Struct.

2020

DOI: 10.9712/kass.2020.20.1.49

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Analysis of External Peak Pressure Coefficients for Cladding in Elliptical Retractable Dome Roof by Wind Tunnel Test

Jong-Ho Lee¹,

Yong-Chul Kim²,

Dong-jin Cheon³

et al.

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Cited by 3 publications

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“…compared the wind pressure coefficient and natural ventilation performance according to the apartment layout through CFD, and roughly categorized the characteristics of the wind pressure coefficient (ventilation performance) according to the position. Lee et al (2021) analyzed the wind pressure characteristics of an open-center elliptical building through a wind tunnel test and compared them with the standards for building structures. In this study, changes in the wind environment in Haeundae due to the building wind effect were quantitatively analyzed by performing on-site monitoring of the building wind near the ground surface in the impact range of the 12th typhoon OMAIS in 2021 for the areas around high-rise buildings.…”

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confidence: 99%

A Review on the Building Wind Impact through On-site Monitoring in Haeundae Marine City: 2021 12th Typhoon OMAIS Case Study

Kim

Kang

Kwon

et al. 2021

J. Ocean Eng. Technol.

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Overcrowding of high-rise buildings in urban zones change the airflow pattern in the surrounding areas. This causes building wind, which adversely affects the wind environment. Building wind can generate more serious social damage under extreme weather conditions such as typhoons. In this study, to analyze the wind speed and wind speed ratio quantitatively, we installed five anemometers in Haeundae, where high-rise buildings are dense, and conducted on-site monitoring in the event of typhoon OMAIS to determine the characteristics of wind over skyscraper towers surround the other buildings. At point M-2, where the strongest wind speed was measured, the maximum average wind speed in 1 min was observed to be 28.99 m/s, which was 1.7 times stronger than that at the ocean observatory, of 17.0 m/s, at the same time. Furthermore, when the wind speed at the ocean observatory was 8.2 m/s, a strong wind speed of 24 m/s was blowing at point M-2, and the wind speed ratio compared to that at the ocean observatory was 2.92. It is judged that winds 2–3 times stronger than those at the surrounding areas can be induced under certain conditions due to the building wind effect. To verify the degree of wind speed, we introduced the Beaufort wind scale. The Beaufort numbers of wind speed data for the ocean observatory were mostly distributed from 2 to 6, and the maximum value was 8; however, for the observation point, values from 9 to 11 were observed. Through this study, it was possible to determine the characteristics of the wind environment in the area around high-rise buildings due to the building wind effect.

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mentioning

confidence: 99%

A Review on the Building Wind Impact through On-site Monitoring in Haeundae Marine City: 2021 12th Typhoon OMAIS Case Study

Kim

Kang

Kwon

et al. 2021

J. Ocean Eng. Technol.

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Wind pressure characteristics of elliptical retractable dome roofs

Lee

Kim

Cheon

et al. 2021

Journal of Asian Architecture and Building Engineering

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This study investigated the wind pressure characteristics of an elliptical plan retractable dome roof. Wind tunnel experiments were performed on elliptical dome roofs with varying wall height-to-span ratios (0.1-0.5) and opening ratios (0, 10, 30, and 50 %), where the opening ratio was defined as the ratio of the open area of the roof to the total area of the roof. The resulting peak pressure coefficients of the closed dome roof were then compared with those of the Japanese wind load code (AIJ-RLB ( 2015)) as there are no current peak pressure coefficients for the cladding design code of elliptical dome roofs. The resulting peak pressure coefficients for each elliptical retractable dome roof opening ratio were also compared with those for the cladding design of spherical retractable domes proposed in previous research. Finally, based on the results of the comparative analysis, negative and positive peak pressure coefficients were proposed for the cladding design of elliptical retractable dome roofs.

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Peak Net Pressure Coefficients of Elliptical Center-Open Dome Roofs

et al. 2022

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Recently, the demand for spatial structures such as retractable dome roofs is increasing. The safety of dome roofs must be ensured even when they are open. Hence, studies analyzing the peak pressure coefficients of spherical dome roofs are actively being conducted. However, no peak pressure coefficients for the cladding design of elliptical retractable dome roofs have been proposed. Although several studies on elliptical open dome roofs that open from the edge to the center have been conducted, studies on those that open from the center to the edge are still insufficient. This study investigated the peak pressure coefficients of elliptical center-open dome roofs. For wind tunnel tests, a model was fabricated with an opening ratio of 30%. Under experimental conditions, five different wall height-to-span ratios (from 0.1 to 0.5) were used, with the roof rise-to-span ratio set at 0.1. Accordingly, the experimental values of the peak pressure coefficients of elliptical center-open dome roofs were compared with those of the closed dome roofs proposed in the Korean and Japanese wind load codes. Subsequently, their efficiency was verified. The findings were also compared with previous research outcomes. Based on the results, peak net pressure coefficients are proposed for cladding designs suitable for elliptical center-open dome roofs.

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Analysis of External Peak Pressure Coefficients for Cladding in Elliptical Retractable Dome Roof by Wind Tunnel Test

Cited by 3 publications

References 4 publications

A Review on the Building Wind Impact through On-site Monitoring in Haeundae Marine City: 2021 12th Typhoon OMAIS Case Study

A Review on the Building Wind Impact through On-site Monitoring in Haeundae Marine City: 2021 12th Typhoon OMAIS Case Study

Wind pressure characteristics of elliptical retractable dome roofs

Peak Net Pressure Coefficients of Elliptical Center-Open Dome Roofs

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