銀泰中心主塔樓方案的抗震分析
吳耀輝,李愛群,張志強,黃鎮(zhèn),婁宇,李培彬,趙廣鵬
- 摘 要
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吳耀輝 李愛群 張志強 黃 鎮(zhèn) （東南大學土木工程學院 南京 210096）婁 宇 李培彬 趙廣鵬?。ㄖ袊娮庸こ淘O計院 北京 100840）
[提要] 銀泰中心主塔樓為一超高層鋼結構建筑。首先探討了其動力特性，然后對其進行了振型分解反應譜
和彈性動力時程分析，其中反應譜分析分別采用了抗震規(guī)范GB50011-2001和場地地震安全性評價報告提供的反應譜，并對此反應譜分別進行了設計基準期和阻尼比調(diào)整。最后對各種計算結果進行了詳細分析和比較，結果表明，按抗震規(guī)范進行基準期調(diào)整的反應譜進行計算將給出最大的地震反應。
[關鍵詞] 超高層鋼結構建筑 動力特性 振型分解反應譜法 彈性動力時程分析 設計基準期 阻尼比The main tower of the Yintai Center is a super high-rise steel structure building. The dynamic property of the main tower is investigated, the seismic responses of the main tower are calculated by the mode-decomposition response-spectrum analysis and linear time-history analysis respectively. In the response-spectrum analysis, two pieces of response-spectrums are adopted which are provided by the seismic code GB50011-2001 and the site earthquake safety evaluation report respectively. The standard design period and the damping ratio of the response-spectrum are modified to satisfy the particular requirement of the building. Finally, the calculated results are analyzed and compared in detail. The results indicate that the biggest seismic response is obtained by the response-spectrum modified according to the standard design period provided by the seismic code.
Keywords: super high-rise steel structure building; dynamic property; mode-decomposition response-spectrum analysis; linear time-history analysis; standard design period; damping ratio參 考 文 獻
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