| 钢结构跃层加层的地震反应分析 |
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| 引用本文： | 宋锋,王元清,石永久. 钢结构跃层加层的地震反应分析[J]. 长安大学学报(建筑与环境科学版), 2009, 0(1): 55-61 |
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| 作者姓名： | 宋锋 王元清 石永久 |
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| 作者单位： | 清华大学结构工程与振动教育部重点实验室,北京100084 |
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| 基金项目： | 基金项目：国家自然科学基金项目（90815004） |
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| 摘 要： | 根据现行的《建筑抗震设计规范》（GB50011—2001），结合2个工程实例，通过建立空间三维有限元模型分析了钢结构跃层加层结构的动力特性，并分别用振型分解反应谱法和时程分析法对分离式和整体式外套框架跃层加层结构进行了地震反应分析，比较了2种结构的地震响应和抗震性能。结果表明：整体式跃层加层结构所受地震力较大，层问剪力峰值持续时间较长，衰减较慢。所得结论可为具有类似加层结构的抗震设计提供参考。
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| 关 键 词： | 钢结构跃层加层 地震反应 反应谱法 时程分析法 |
Seismic Response Analysis of Adding Extra-floors Spanning Existing Building with Steel Structure |
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| SONG Feng,WANG Yuan-qing,SHI Yong-jiu. Seismic Response Analysis of Adding Extra-floors Spanning Existing Building with Steel Structure[J]. Journal of Northwestern Institute of Architectural Engineering, 2009, 0(1): 55-61 |
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| Authors: | SONG Feng WANG Yuan-qing SHI Yong-jiu |
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| Affiliation: | (Key Laboratory of Structural Engineering and Vibration of Ministry of Education, Tsinghua University, Beijing 100084, China) |
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| Abstract: | According to the actual Code for Seismic Design of Building （GB 50011--2001） and combining with two engineering cases, the dynamic characteristics of adding extra-floors spanning existing building with steel structure were ana and the seismic responses of the separated an response spectrum method and time history ana zed through making 3-D finite element model, integral coat framing were obtained by using sis method of vibration mode. The results show that the seismic force of adding extra-floors spanning existing building with steel structure is bigger, and the time of top values of shearing force between layers is longer, and the reducing is slower. The seismic responses and seismic behaviors of two kinds of structures were compared. The conclusion can be served as the references of such structure design. |
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| Keywords: | adding extra-floor spanning existing building with steel structure seismic response response spectrum method time history analysis method |
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