【摘要】 近年来转换层在高层建筑中广泛应用,并且由于建筑功能的多样化使得结构体型越来越复杂,因此对复杂高层建筑结构的抗震设计提出了新要求。本文以某新区一大型公共建筑振动台试验模型为例,对其进行了动力时程分析,探究带转换层退台式高层建筑结构体系在各级地震作用下的抗震性能。首先根据相似比换算截面尺寸和材料的属性,用ETABS来模拟振动台模型。通过模态分析和小震时程分析结果跟试验结果对比证明了有限元模型的正确性,分析了该结构模型在地震作用下的动力反应和变形特征,然后对该结构进行了罕遇地震作用下的动力响应分析,具体研究了该结构的最大位移和层间位移角分布,从整体上对该结构的抗震性能做出评价。更多还原

【Abstract】 In recent years,the transfer floor structure is used ever more extensively in m odern high-rise building with the increase of structure height,and the configur ation is also becoming more and more complex for the diversity of building fucti on.As result,new requirements are come up with for the seismic design of the hi gh-rise buildings.Dynamical time-history analysis of a shaking table test-model of the luge public building is carried out in this paper to study the seismic b ehavior of the stepped-shape structure with the transfer floor under different e arthquake levels.First of all,the cross-sectional dimensions and the material properties are defined according to the similarity ratio,then the shaking table test model is studied using the ETABS program.Comparisons of the modal analysi s and time-history analysis results under small earthquake between the experimen tal results and the calculation result proves that the finite element model is c orrect.Then the deformation characteristics and dynamic responses of the model structure under the small are analysed.And the dynamic responses of the model s tructure under the rarelly occurred earthquake are studied in detail,including the maximal relative displacement,the maximal storey displacement and the maxim al rotation angles.Finally the whole seismic behavior of the building is evalua ted based on these results.更多还原