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통계적 방법에 의한 외장재 설계용 피크외압의 합리적인 평가
제갈범(Jegal Bum),하영철(Ha Young-Cheol) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.4
Time series data of wind pressure from wind tunnel test on rectangular buildings were used for the population. An appropriate probabilistic distribution on this population was estimated by applying 4 types, i.e. Normal distribution, Gamma distribution, Gumbel distribution and Weibull distribution. The method which is to estimate peak external pressure coefficient by using such characteristic values of probabilistic distribution as mean and root mean square, is suggested. The peak external pressure coefficient estimated by probabilistic distribution is compared to the value from the conventional method, which extracts the largest among moving averaged time series data of wind pressure, and the differences between those values are discussed. In case that time series data of population are divided into arbitrary estimating time, converted into subset data, and the number of estimating samples is decreased, it is examined how peak external pressure coefficient and non-exceedence probability which is required to estimate peak external pressure coefficient, are changed in relation to estimating time or number of subset.
원종호,제갈범,하영철 한국풍공학회 2010 한국풍공학회지 Vol.14 No.2
이 연구는 풍동실험을 통하여 건축물의 외장재에 작용하는 풍압을 측정하여 피크팩터와 피크외압계수의 특성을 규명한 것이다. 각각의 풍압공에서 측정된 풍압시계열 데이터로부터 산정된 피크외압계수와 정상확률과정에서 얻은 피크팩터를 이용한 피크외압계수를 비교하였다. 풍동실험은 금오공과대학교 소재 토출식 경계층 풍동에서 실시하였다. 본 연구를 위하여 실험모형은 변장비를 1로 고정시키고 형상비를 2, 4, 6으로 변화시킨 3개의 모형을 대상으로 실험을 실시하였다. This study aims to compare characteristics of peak factor and peak external pressure coefficient on cladding of buildings. Peak external pressure coefficients were calculated from time-series data of wind pressure measured in each of wind pressure tab and peak external pressure coefficients calculated using peak factors gained in stationary process were compared. Wind tunnel tests were conducted on open-type boundary layer wind tunnel located in Kum-oh National Institute of Technology. Side ratio of test models was fixed as 1 and aspect ratios were changed as 2, 4 and 6 respectively.