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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/94339

    Title: 以非線性迴歸方法建立建築物風力係數及風力頻譜之擬合公式
    Other Titles: Using nonlinear regression to establish fitting formulas for wind coefficients and spectra of buildings
    Authors: 廖仁傑;Liao, Jen-Chieh
    Contributors: 淡江大學土木工程學系碩士班
    Keywords: 橫風向;扭轉向;風力頻譜;風力係數;非線性迴歸;Across-Wind;Torsion-wind;Wind Force Spectrum;Wind Coefficien;nonlinear regression
    Date: 2013
    Issue Date: 2014-01-23 14:22:28 (UTC+8)
    Abstract: 目前國內風力規範「建築物耐風設計規範及解說」相關條文大多引用美國ASCE 7-02(2002)之內容與參考日本AIJ(1996)之橫風向與扭轉向風力規定,而橫風向與扭轉向風力規定中的風力係數及風力頻譜計算式缺乏地況及高寬比之變數,使用上也非常保守。
    At present, the majority of Taiwan wind code are cited from ASCE 7-02(2002), and the acrosswind and torsional wind loading regulations refers to the AIJ(1996). Therefore, the lack of variances of terrain and aspect ratio in the calculations of acrosswind and torsional wind coefficients and spectrums is also presented, resulted in a very conservative application of Taiwan’s wind code.
    This thesis focused on the investigation of wind coefficients and wind spectrums required for acrosswind and torsional wind loading analysis in Taiwan’s wind code. Comparisons with the data of tunnel experiments provided by Wind Engineering Research Center of Tamkang University were conducted as well.
    In addition, nonlinear regression analysis of the experimental data was performed. The purpose of this analysis is to fit simplified formula on wind coefficients and spectrums, which can be used for future acrosswind and torsional wind loading designs.
    Wind tunnel data including side ratio 1/5, 1/3, 1/1, 3/1 and 5/1, and aspect ratio 2, 4 and 6 were selected as the final comparison basis. Wind loadings calculated from wind spectrums of experiments and of nonlinear regression models based on the wind loading calculation model in the 2012 ABRI project:「Applications of Aerodynamic Database on Building Design Wind Loads」 were both studied and compared. In addition, the results of nonlinear regression were also check against wind loading calculated using Taiwan wind code.
    Wind loadings calculated using Taiwan wind code for high aspect ratio buildings are close to experimental data, but are obviously smaller than experimental results for the low aspect ratio. The reasons are caused by the applicable range of the code and different wind loading calculation models. Wind loadings calculated from nonlinear regression are always closer to experimental results than using wind code.
    Appears in Collections:[土木工程學系暨研究所] 學位論文

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