| Title |
Analysis of Fluctuating Wind Pressure on the Interior Roof Surface of Long-Span Structures with Openings |
| Authors |
천동진(Cheon, Dong-Jin) ; 김용철(Kim, Yong-Chul) ; 윤성원(Yoon, Sung-Won) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.8.351 |
| Keywords |
Open Long-Span Roof Structure; Wind Tunnel Test; Internal Volume; Internal Pressure Coefficients; Helmholtz Resonance |
| Abstract |
This study examines how internal volume affects the internal pressure on the interior roof surface of an open dome structure with a central
opening. Wind tunnel tests were conducted using four different volume conditions, and internal pressure characteristics were analyzed through
mean values, standard deviation, power spectral density, skewness, and kurtosis. The findings indicate that internal volume impacts both the
magnitude and variability of internal pressure. In the Vs condition, Helmholtz resonance interacted with vortex shedding, amplifying energy
around 67.5 Hz. Although Helmholtz resonance appeared at higher frequencies with lower energy, its independent effect was limited. These
higher resonance frequencies, accompanied by relatively low energy levels, are notably different from those observed in previous studies that
focused on structures with smaller openings. Analysis of skewness and kurtosis confirmed that non-Gaussian behavior was most evident under
the Vs condition. |