带转换层退台式高层建筑模型抗震性能分析
|
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。
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.
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.
引文
[1]吕西林,李学平.超限高层建筑工程抗震设计中的若干问题[J].建筑结构学报,2002,23(2):13-18.
[2]徐培福.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005.
[3]黄志斌.高层建筑结构计算软件的分析比较[J].工程设计CAD与智能建筑,2002,22(3):74-77.
[4]吕西林,陈跃,卢文胜,等.高位转换超限高层结构整体模型振动台式验研究[J].同济大学学报(自然科学版),2008,36(6):711-716.
[5]GB50011-2010,建筑抗震设计规范[S].
[6]龚治国,吕西林,卢文胜,等.混合结构体系高层建筑模拟振动台试验研究[J].地震工程与工程振动,2005,25(2):34-42.
[7]赵西安.现代高层建筑结构设计手册(上)[M].北京:科学出版社,2000.
[8]幕朝辉.不规则高层建筑结构的抗震分析[D].成都:西南交通大学,2003.
[9](日)北村春幸.基于性能设计的建筑振动解析[M].裴星洙,廖红建,张立,译.西安:西安交通大学出版社.2004.
[10]JGJ3-2002,高层建筑混凝土结构技术工程[S].
[2]徐培福.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005.
[3]黄志斌.高层建筑结构计算软件的分析比较[J].工程设计CAD与智能建筑,2002,22(3):74-77.
[4]吕西林,陈跃,卢文胜,等.高位转换超限高层结构整体模型振动台式验研究[J].同济大学学报(自然科学版),2008,36(6):711-716.
[5]GB50011-2010,建筑抗震设计规范[S].
[6]龚治国,吕西林,卢文胜,等.混合结构体系高层建筑模拟振动台试验研究[J].地震工程与工程振动,2005,25(2):34-42.
[7]赵西安.现代高层建筑结构设计手册(上)[M].北京:科学出版社,2000.
[8]幕朝辉.不规则高层建筑结构的抗震分析[D].成都:西南交通大学,2003.
[9](日)北村春幸.基于性能设计的建筑振动解析[M].裴星洙,廖红建,张立,译.西安:西安交通大学出版社.2004.
[10]JGJ3-2002,高层建筑混凝土结构技术工程[S].
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