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논문 기본 정보

자료유형
학술저널
저자정보
Quan, Yong (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University) Hou, Fangchao (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University) Gu, Ming (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University)
저널정보
테크노프레스 Wind & structures Wind & structures 제24권 제2호
발행연도
2017.1
수록면
145 - 169 (25page)

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The auxiliary structures of a high-rise building, such as balconies, ribs, and grids, are usually much smaller than the whole building; therefore, it is difficult to simulate them on a scaled model during wind tunnel tests, and they are often ignored. However, they may have notable effects on the local or overall wind loads of the building. In the present study, a series of wind pressure wind tunnel tests and high-frequency force balance (HFFB) wind tunnel tests were conducted on rigid models of an actual super high-rise building with vertical ribs protruding from its facades. The effects of the depth and spacing of vertical ribs on the mean values, fluctuating values and the most unfavorable values of the local wind pressure coefficients were investigated by analyzing the distribution of wind pressure coefficients on the facades and the variations of the wind pressure coefficients at the cross section at 2/3 of the building height versus wind direction angle. In addition, the effects of the depth and spacing of vertical ribs on the mean values, fluctuating values and power spectra of the overall aerodynamic force coefficients were studied by analyzing the aerodynamic base moment coefficients. The results show that vertical ribs significantly decrease the most unfavorable suction coefficients in the corner recession regions and edge regions of facades and increase the mean and fluctuating along-wind overall aerodynamic forces.

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