异形柱框架结构基础隔震设计与分析
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摘要
为研究异形柱框架结构的隔震性能,以四川省某住宅楼为工程背景,设计一栋传统抗震异形柱结构和一栋基础隔震异形柱结构。基于PMSAP设计软件,在8度0.3g罕遇烈度地震作用下,对二者的抗震性能进行对比分析。研究结果表明,抗震结构的层间剪力和层间弯矩均较大,且X、Y两个方向上的层间位移角全部超过现行规范的要求;而隔震结构的层间剪力和弯矩、楼层位移以及层间位移角均较抗震结构均有大幅度降低,其中层间剪力和层间弯矩分别降低了79%和81%。因此,采用基础隔震技术可以有效的提高异形柱框架结构的抗震性能,该技术也有助于异形柱框架结构在四川省地震灾区的推广。
In order to investigate the isolation capability of special-shaped column frame structure, a classical anti-seismic structure and a base isolation building were designed by taking a residential building in Sichuan as engineering background. Base on PMSAP software, the seismic performance of the two buildings were compared under 8 degree earthquake with acceleration as 0.3g. The research results show that the interlayer shear and moment of anti-seismic building are relative lager, and the actual interlayer drift ratios have exceeded the required interlayer drift ratios in X and Y direction; but the interlayer shear, moment and interlayer drift ratios of base isolation building is relative smaller, and the interlayer shear and moment have reduced 79% and 81% respectively. So base isolation technology can enhance the seismic performance of special-shaped columns frame structure significantly. This provides supports to the generalization of specialshaped columns frame structure in earthquake disaster region of Sichuan province.
In order to investigate the isolation capability of special-shaped column frame structure, a classical anti-seismic structure and a base isolation building were designed by taking a residential building in Sichuan as engineering background. Base on PMSAP software, the seismic performance of the two buildings were compared under 8 degree earthquake with acceleration as 0.3g. The research results show that the interlayer shear and moment of anti-seismic building are relative lager, and the actual interlayer drift ratios have exceeded the required interlayer drift ratios in X and Y direction; but the interlayer shear, moment and interlayer drift ratios of base isolation building is relative smaller, and the interlayer shear and moment have reduced 79% and 81% respectively. So base isolation technology can enhance the seismic performance of special-shaped columns frame structure significantly. This provides supports to the generalization of specialshaped columns frame structure in earthquake disaster region of Sichuan province.
引文
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[2]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010 Code for seismic design of building[S].Beijing:China Architecture and Building Press,2010(in Chinese))
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[8]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国建筑工业出版社,2001(CECS126:2001 Technical specification for seismic-isolation with laminated rubber bearing isolators[S].Beijing:China Architecture and Building Press,2001(in Chinese))
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[2]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010 Code for seismic design of building[S].Beijing:China Architecture and Building Press,2010(in Chinese))
[3]周福霖.工程结构减震控制[M].北京:地震出版社,1997:79
[4]周云,吴从晓,张崇凌,等.芦山县人民医院门诊综合楼隔震结构分析与设计[J].建筑结构,2013,43(24):23-27(Zhou Yun,Wu Congxiao,Zhang Chongling,et al.Analysis and design of seismic isolation structure in outpatient building of the Lushan County People’s Hospital[J].Building Structure,2013,43(24):23-27(in Chinese))
[5]王依群,赵盼.异形柱框架结构的隔震设计[J].天津大学学报,2010,43(11):971-976(Wang Yiqun,Zhao Pan.Design of seismic isolated frame structure with specially shaped column[J].Journal of Tianjin University,2010,43(11):971-976(in Chinese))
[6]李秋英,刘丽丽,董宏伟.基础隔震异形柱框架结构的参数优化[J].河北工程大学学报:自然科学版,2010,27(3):5-8(Li Qiuying,Liu Lili,Dong Hongwei.Optimizing parameters of the base isolated frame structure with reinforced concrete special shaped column[J].Journal of Hebei University of Engineering:Natural Science Edition,2010,27(3):5-8(in Chinese))
[7]武盟,潘文,邹小凤.罕遇地震下异形柱隔震结构时程分析[J].低温建筑技术,2013,(5):73-75(Wu Meng,Pan Wen,Zou Xiaofeng,Time-history analysis of isolation structure with specially-shaped columns under rare earthquake[J].Low Temperature Architecture Technology,2013,(5):73-75(in Chinese))
[8]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国建筑工业出版社,2001(CECS126:2001 Technical specification for seismic-isolation with laminated rubber bearing isolators[S].Beijing:China Architecture and Building Press,2001(in Chinese))
[9]党育,杜永峰,李慧.基础隔震结构设计及施工指南[M].北京:中国水利水电出版社,2007:89
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