Wind force components on low-rise building models and flow fields

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  • C203 低層建物に作用する風力成分と流速場
  • テイソウ タテモノ ニ サヨウ スル フウリョク セイブン ト リュウソクバ

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Abstract

In this paper, fluctuating surface pressure measurements are made for four flat roofed building models with square or rectangular plans in order to examine wind load combinations. The fluctuating pressures are integrated over all their surfaces and results are obtained as along-wind force, crosswind force, vertical force and torsional moment on their frames. The maximum wind force in consideration of the wind direction component and other simultaneously observed wind force components are examined, and some interesting facts regarding the wind force combinations are discussed on" the basis of absolute value correlations, phase-plane expressions and so on. This investigation concurrently measured wind pressure applied to a wall surface and the resulting wind flow field around the building using a wind pressure model and DPIV systems. Data obtained through the measurements enabled identification of the wind flow field around the building that results from the maximum and minimum wind force applied to it.

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