不同高宽比高层隔震结构的地震反应分析
|
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。
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.
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.
引文
[1]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB50011-2010 Code for seismic design of buildings[S].Beijing:Building Industry Press of China,2010.(in Chinese)
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.ZHOU Fulin.Vibration-Reduction Control of Engineering Structures[M].Beijing:Seismological Press,1997.(in Chinese)
[3]耿芳芳,李爱群.宿迁某高层剪力墙住宅基础隔震设计方法研究[J].江苏建筑,2011,6:16-19.GENG Fangfang,LI Aiqun.Design of Base Isolation for a high-rise Shear-Wall Residential Building in Suqian[J].The Structure of Jiangsu,2011,6:16-19.(in Chinese)
[4]吴晓飞,陆伟东.基于偏心率的隔震层布置及优化方法研究[J].四川建筑科学研究,2011,37(3):135-138.WU Xiaofei,LU Weidong.Researching of RB arrangement and optimization based on eccentricity[J].Sichuan Building Science,2011,37(3):135-138.(in Chinese)
[5]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国工程建设标准化协会,2001.CECS126:2001 Technical specification for seismic-isolation with laminated rubber bearing isolators[S].Beijing:China Association for Engineering Construction,2001.(in Chinese)
[6]李宏男,吴香香.橡胶垫隔震支座结构高宽比限值研究[J].建筑结构学报,2003,25(2):14-19.LI Hongnan,WU Xiangxiang.Study of limit of height-to-width ratio for base-isolated buildings with rubber bearings under earthquake[J].Journal of Building Structure,2003,25(2):14-19.(in Chinese)
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.ZHOU Fulin.Vibration-Reduction Control of Engineering Structures[M].Beijing:Seismological Press,1997.(in Chinese)
[3]耿芳芳,李爱群.宿迁某高层剪力墙住宅基础隔震设计方法研究[J].江苏建筑,2011,6:16-19.GENG Fangfang,LI Aiqun.Design of Base Isolation for a high-rise Shear-Wall Residential Building in Suqian[J].The Structure of Jiangsu,2011,6:16-19.(in Chinese)
[4]吴晓飞,陆伟东.基于偏心率的隔震层布置及优化方法研究[J].四川建筑科学研究,2011,37(3):135-138.WU Xiaofei,LU Weidong.Researching of RB arrangement and optimization based on eccentricity[J].Sichuan Building Science,2011,37(3):135-138.(in Chinese)
[5]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国工程建设标准化协会,2001.CECS126:2001 Technical specification for seismic-isolation with laminated rubber bearing isolators[S].Beijing:China Association for Engineering Construction,2001.(in Chinese)
[6]李宏男,吴香香.橡胶垫隔震支座结构高宽比限值研究[J].建筑结构学报,2003,25(2):14-19.LI Hongnan,WU Xiangxiang.Study of limit of height-to-width ratio for base-isolated buildings with rubber bearings under earthquake[J].Journal of Building Structure,2003,25(2):14-19.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心