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不同高宽比高层隔震结构的地震反应分析
Seismic response analysis of high-rise isolated structure to various height-to-width ratio
【摘要】 隔震技术一般适用于层数为1~30层的建筑物或高宽比不大于4的各类多高层建筑物,但目前已经有很多超高、超高宽比的隔震建筑建成。本文以某四栋高层建筑为例,探讨了不同高宽比高层隔震结构的地震响应。分析结果表明,随着高宽比的增大,高层隔震结构的地震响应增强,但水平向减震系数变化不明显,高宽比变化对高层结构的隔震设计无明显影响,在进行高层结构隔震设计时高宽比的取值不应限制过严,可在现有规范的基础上予以适当放宽。
【Abstract】 Isolation technology is usually applicable to those buildings with 1 to 30 stories or those high buildings whose height-to-width ratio is less than 4,but now there are lots of isolation buildings with height-to-width ratio have been completed. This paper takes the example of four buildings,to discuss seismic response of high-rise isolated buildings to various height-to-width ratio. The analysis shows that with the expanding of height-to-width ratio,the seismic response has strengthened. But damping coefficient in horizontal direction is not obvious. Height-to-width ratio has no distinct impact on isolation design of high structure. Height-to-width ratio should not be too strict when designing the high-rise buildings of isolation. It can be properly loosened based on standard.
【Key words】 height-to-width ratio; high-rise structure; isolation design; isolation analysis; seismic response;
- 【文献出处】 地震工程与工程振动 ,Earthquake Engineering and Engineering Dynamics , 编辑部邮箱 ,2014年S1期
- 【分类号】TU973.31
- 【被引频次】2
- 【下载频次】126