银泰中心主塔楼方案的抗震分析
- 摘 要
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吴耀辉 李爱群 张志强 黄 镇 （东南大学土木工程学院 南京 210096）娄 宇 李培彬 赵广鹏 （中国电子工程设计院 北京 100840）
[提要] 银泰中心主塔楼为一超高层钢结构建筑。首先探讨了其动力特性，然后对其进行了振型分解反应谱
和弹性动力时程分析，其中反应谱分析分别采用了抗震规范GB50011-2001和场地地震安全性评价报告提供的反应谱，并对此反应谱分别进行了设计基准期和阻尼比调整。最后对各种计算结果进行了详细分析和比较，结果表明，按抗震规范进行基准期调整的反应谱进行计算将给出最大的地震反应。
[关键词] 超高层钢结构建筑 动力特性 振型分解反应谱法 弹性动力时程分析 设计基准期 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参 考 文 献
1．建筑抗震设计规范( GB50011-2001)．中国建筑工业出版社，2001.
2．北京银泰中心工程场地地震安全性评价报告．2000.
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