教師資料查詢 | 類別: 期刊論文 | 教師: 羅元隆 LO, YUAN-LUNG (瀏覽個人網頁)

標題:Approximation of fluctuating pressure cross spectra of dome-like roofs under turbulent flow
學年107
學期1
出版(發表)日期2018/11/05
作品名稱Approximation of fluctuating pressure cross spectra of dome-like roofs under turbulent flow
作品名稱(其他語言)
著者Yuan-Lung Lo; Hsiang-Ling Lin
單位
出版者
著錄名稱、卷期、頁數Journal of the Chinese Institute of Engineers 41(7), p.579-589
摘要Large span roof structures have been widely adopted for their good performance in multiple functionalities and innovative designs. However, because of their light weight, wind-resistant design is more urgent than earthquake-resistant design. And further, their long span geometry often results in a weak spatial correlation in pressure distributions and hence makes the estimation of wind loads a difficult task. Spectrum characteristics of wind pressures have been mentioned in several publications; however, there is still little discussion of cross-spectrum characteristics. In this paper, cross-spectra of fluctuating wind pressures on various dome-like roofs are investigated under a suburban terrain flow. By examining separately the root-coherence function and the phase function, approximation models of both functions are proposed in terms of the rise/span ratio based on certain simple but efficient assumptions. Once the two functions are simulated in good agreement with experimental results, the cross-spectra, or the co-coherence function, can be simulated by simply combining the root-coherence function and the phase function.
關鍵字Hemispherical dome;wind tunnel test;pressure cross-spectrum
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者Yuan-Lung Lo
審稿制度
國別中華民國
公開徵稿
出版型式,電子版
相關連結
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