Calculation of Wind Profile in Pohang Area
Member, Research Institute of Industrial Science & Technology, Pohang wind Energy Research Center
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초록
본 연구에서는 풍속의 연직분포가 지수법칙을 따른다고 가정하여 포항시 대보면 구만리에 설치된 관측탑의 20m 및 30m 위치에서 측정된 풍황 실측자료를 이용하여 포항지역의 고도분포지수를 산출하였다. 2002년 6월 개정 고시된 「건축물의 구조기준 등에 관한 규칙」 및 「건축물 하중기준 및 해설」에 따르면 포항은 노풍도 B에 해당하며 고도분포지수는 0.22인 반면 본 연구에서 산출된 포항지역의 평균 고도분포지수는 0.26으로, 개정된 하중기준의 노풍도 분류에 따른 고도분포지수가 포항지역의 경우 적합한 것으로 검증되었다.
Abstract
In the present study, the practicability of Commentary on Wind Loads of Korean Standard Design Loads for Buildings, which has been enacted in Ministry of Construction and Transportation in June 2000, has been verified by using the meteorological data as actually measured at Guman-ri, Daebo-myeon, Pohang. Assuming that the vertical profile of wind velocity follows the power-law, wind profile exponents have been calculated by seasons, classes of wind speed and main wind directions by using meteorological data as collected through measurement at heights of 20m and 30m in a monitoring tower. According to Wind Load Standards, Pohang is classified with its exposure category being B and its wind profile exponent being 0.22, while it is identified that the average wind profile exponent in Pohang as calculated in this study was 0.26. Also, in this study, a method for using a correlation coefficient has been suggested in order to identify any meteorological correlation between measurement sites quantitatively.