English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62379/95055 (66%)
造訪人次 : 2299604      線上人數 : 194
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/83202

    題名: Evaluation of wind loads on super-tall buildings from field-measured wind-induced acceleration response
    作者: Xu, A.;Xie, Z.N.;Fu, J.Y.;Wu, J.R.;Tuan, Alex
    貢獻者: 淡江大學土木工程學系
    關鍵詞: wind;effect;tall;building;Strouhal;spectrum
    日期: 2012
    上傳時間: 2013-03-14 17:04:45 (UTC+8)
    出版者: Oxford: John Wiley & Sons Ltd.
    摘要: With the nonstationary wind-induced acceleration data from full-scale measurements, an approach for estimation of the wind-induced overturning bending moments for super-tall buildings was proposed in this paper. The empirical mode decomposition was employed to decompose the measured acceleration data into a set of intrinsic mode functions and a residual component. To remove the baseline offset, the residual component and the intrinsic mode function components with long-period were eliminated before their integrations into velocity and displacement components. Then, the intrinsic mode function components, which have the same dominant periods as the natural periods of the studied tall buildings, were extracted from the original signals, and the natural frequency and damping ratio for the first vibration mode of the building were identified. Finally, the wind-induced overturning bending moments of the building were obtained from the generalized wind loads for the first vibration mode, which could be obtained from the time history analysis of dynamic equation. The Hilbert spectrum of wind-induced overturning bending moments was utilized to observe its characteristics in both time and frequency domains, and the Strouhal number was thus identified. The proposed scheme and some selected results may be helpful for further understanding of wind effects on super-tall buildings.
    關聯: The Structural Design of Tall and Special Buildings (Early View)
    DOI: 10.1002/tal.1065
    顯示於類別:[土木工程學系暨研究所] 期刊論文


    檔案 描述 大小格式瀏覽次數



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋