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題 名 | Alternate Methods for Construction of Design Response Spectrum=建立設計反應譜的替代方法 |
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作 者 | 田堯彰; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 22:6 1998.11[民87.11] |
頁 次 | 頁775-782 |
分類號 | 441.571 |
關鍵詞 | 反應譜; 地震加速度; Design spectrum; Evolutionary power spectrum; Subprocesses technique; Multifilter technique; |
語 文 | 英文(English) |
中文摘要 | 一個地震加速度歷時的演化能譜可由兩種技巧得到。經由適當正規化因子的擇取 ,可以建立特定的多個地震加速度歷時平均演化能譜的形狀函數。此因子與最大地表加速度 的關係並予以探討。是以在一個設計地表加速度下,平均演化能譜可由該形狀函數與對應的 正規化因子相乘而得。據此能譜,可模擬產生一組加速度歷時以計算反應譜值。研究中所使 用的臺灣地震資料共 159 個,其最大地表加速度皆大於 0.05 g。這些資料依地震延時與地 況分成多組。研究結果顯示在堅硬地盤與興趣的周期範圍內,傳統方法所計算的反應譜並不 保守。對於重要結構物與高樓的設計,本文所建議的兩種方法皆較合宜。 |
英文摘要 | The evolutionary power spectrum (EPS) of any single seismic accelerogram is estimated using two techniques. An appropriate normalization factor is adopted to build the shape function of the expected EPS of a particular set of accelerograms. The relationship between this factor and the peak ground acceleration (PGA) is investigated. Therefore, under a design g-level, the expected EPS is obtained by multiplying the shape function by a suitable normalization factor. Based on the expected EPS, a set of simulated acceleration time histories can be generated to calculate the response spectral values. The available data include 159 strong-motion records in Taiwan with PGA greater than 0.05 g. The data are classified according to site condition and earthquake duration. It is shown that, within the range of the periods of interest, the spectrum of the hard site obtained using the conventional method is not conservative. The spectra obtained using the two proposed methods are preferable for the design of some important structures and tall buildings. |
本系統中英文摘要資訊取自各篇刊載內容。