某大底盘非对称双塔结构的地震响应分析
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摘要
以某大底盘不对称双塔结构为例,通过建立大底盘不对称双塔结构与大底盘不对称双塔连体结构的有限元模型,比较了两种结构的动力特性,并运用振型分解反应谱法对结构分别施加x、y向水平地震激励,得出了两个方向地震作用下的两种结构的层间位移与层间剪力。计算结果表明,连体可以很好地协调两个塔楼的变形,减少底盘处的剪力,增设连体对大底盘非对称双塔结构有利。
Using unsymmetrical connecting buildings with large bases as an example,a unsymmetrical two-tower building with large bases and a unsymmetrical two-tower connecting building with large bases were established.The dynamic properties of the two structures are pompared,and using mode superposition response spectrum analysis imposed onxandydirection seismic excitation,floors displacement and floors shear were achieved.The results show that connector could be very good co-ordination of the deformation of the two towers,reduce the shear on the large bases,adding connector was benefit of a unsymmetrical two-tower building with large bases.
引文
1黄坤耀.双塔连体结构的静力、抗震和抗风分析.杭州:浙江大学.博士学位论文,2001
    2何涛,孙伶俐,李鑫鑫.地震作用下双塔楼连体结构的有限元分析.建筑技术开发,2007;(6),28—29
    3卢文玎.框架—筒体连体结构的静力、动力特性和地震反应分析.武汉:硕士学位论文,2005
    4张卉,何涛.某双塔楼连体结构的地震响应分析.建筑技术开发,2007;(1):1—4
    5高层建筑混凝土结构技术规程(JGJ3—2002).北京:中国建筑工业出版社,2002

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