湖南大学学报（自然科学版）
湖南大學學報（自然科學版）
호남대학학보（자연과학판）
JOURNAL OF HUNAN UNIVERSITY(NATURAL SCIENCES EDITION)
2015年
1期
1-8
,共8页
李秋胜%李慧真%李毅
李鞦勝%李慧真%李毅
리추성%리혜진%리의
风洞试验%高耸结构%风压系数%风荷载功率谱%等效静力风荷载
風洞試驗%高聳結構%風壓繫數%風荷載功率譜%等效靜力風荷載
풍동시험%고용결구%풍압계수%풍하재공솔보%등효정력풍하재
wind tunnel testing%high-rise building%wind pressure coefficient%wind load power spec-tra%equivalent static wind load
结合武汉天河国际机场三期扩建空管工程塔台刚性模型同步测压风洞试验结果，对椭圆形高耸结构的风荷载特性进行了研究。讨论了典型风向角下不同测点层的平均风压系数和极值风压系数的分布规律；基于测点层的风荷载合力时程，采用快速傅里叶变换的方法，得到了椭圆形高耸结构在90°风向角(最大迎风面)下的三维层风荷载功率谱，并采用经验公式对其进行拟合，拟合效果较好。采用 LRC 法计算了平均风荷载、背景和共振等效静力风荷载，并将结果与荷载规范建议的惯性风荷载法对比，发现两种方法得到的等效静力风荷载吻合较好。
結閤武漢天河國際機場三期擴建空管工程塔檯剛性模型同步測壓風洞試驗結果，對橢圓形高聳結構的風荷載特性進行瞭研究。討論瞭典型風嚮角下不同測點層的平均風壓繫數和極值風壓繫數的分佈規律；基于測點層的風荷載閤力時程，採用快速傅裏葉變換的方法，得到瞭橢圓形高聳結構在90°風嚮角(最大迎風麵)下的三維層風荷載功率譜，併採用經驗公式對其進行擬閤，擬閤效果較好。採用 LRC 法計算瞭平均風荷載、揹景和共振等效靜力風荷載，併將結果與荷載規範建議的慣性風荷載法對比，髮現兩種方法得到的等效靜力風荷載吻閤較好。
결합무한천하국제궤장삼기확건공관공정탑태강성모형동보측압풍동시험결과，대타원형고용결구적풍하재특성진행료연구。토론료전형풍향각하불동측점층적평균풍압계수화겁치풍압계수적분포규률；기우측점층적풍하재합력시정，채용쾌속부리협변환적방법，득도료타원형고용결구재90°풍향각(최대영풍면)하적삼유층풍하재공솔보，병채용경험공식대기진행의합，의합효과교호。채용 LRC 법계산료평균풍하재、배경화공진등효정력풍하재，병장결과여하재규범건의적관성풍하재법대비，발현량충방법득도적등효정력풍하재문합교호。
Based on the simultaneous pressure measurements of the rigid model of Wuhan Tianhe In-ternational Airport Phase III (expansion of ATC tower)Proj ect in a wind tunnel test,the characteristics of the wind loads on the oval-shaped high-rise structure were investigated.This paper discussed the distribu-tions of mean and peak wind pressure coefficients on numerous test points under typical wind directions. Based on the time-histories of wind loads and FFT method,the spectra of 3-D wind loads on the oval-shaped structure were obtained for 90°approaching wind direction (corresponding to the maximum wind-ward area).The power spectra were then fitted by using the empirical formula.The mean,background and resonant equivalent static wind loads were determined by the LRC wind load method.The results were compared with those by the inertia wind loading method.It is found that the equivalent static wind loads by these two methods are in good agreement.
