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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/102465

    Title: 順風向、橫風向、扭轉向風力的極值特性與組合係數之研究
    Other Titles: Investigation on the extreme value characteristics and combination factors of building design wind loads
    Authors: 王靖蕙;Wang, Jing-Huei
    Contributors: 淡江大學土木工程學系碩士班
    鄭啟明;Cheng, Chii-Ming
    Keywords: 高層建築;風載重組合;風力極值;風洞實驗;High-rise buildings;wind load combinations;wind extreme value;Wind tunnel test
    Date: 2014
    Issue Date: 2015-05-04 09:56:33 (UTC+8)
    Abstract:   作用於高層建築物之風荷載,主要受順風向、橫風向與扭轉向3種不同方向之風力影響。在目前國內規範中的建築物設計風力之載重組合,係指依循風的作用方向計算其所對應的順風向、橫風向與扭轉向設計風力,作為該來風方向之設計風力組合。然而於實際情況,同一來風作用的三個方向風力的最大值,並不一定同時發生,亦表示國內規範中的載重組合可能過於保守,故本文將針對此議題加以探討。


    Wind loads acting on high-rise buildings can be categorized as alongwind, acrosswind and torsional wind loads. The current Taiwan building wind code stipulates to use the largest alongwind, acrosswind and torsional wind loads together as the building design wind loads. However, the largest value of these three wind loads may not occur simultaneously. In this thesis, wind loads of rectangular shaped building models of various side ratio and aspect ratio, obtained from pressure measurements were used to investigate the correlations among three wind loads. Each set of wind loads were divided into 36-40 10-minutes length records. For each 10-minute record, the largest value of alongwind/ acrosswind/ torsional wind load together with the other two wind loads occurred at the same time were established. The mean values, standard deviations and conditional probability mass functions for the other two wind loads under the condition of one certain extreme wind load were calculated for all cases. The correlations of wind loads under the condition of certain extreme wind load were studied. Based on these conditioned statistical characteristics of winds loads, a simplified combination for design wind loads was proposed.
    Appears in Collections:[土木工程學系暨研究所] 學位論文

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