大底盘多裙房复杂超高层建筑基础隔震设计与研究
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摘要
近年来随着隔震技术的日益成熟,隔震体系越来越多的应用到多裙房高层复杂建筑当中因而产生了许多新的技术问题。本文以某新区一大型建筑模型为例,采用基础隔震和柱顶隔震方案,通过基底的大底盘将裙房和塔楼连在一起而在门厅处则采用柱顶隔震。应用Sap2000有限元程序来建立实体模型,进而对相应的隔震与非隔震结构进行不同地震波作用下的时程分析。通过模态分析和时程分析结果,分析了该结构模型在地震作用下的减震效果,并对一些现象初步分析了原因。
In recent years,the isolation technology has been recongnized as a mature technology,and more and more high-rise complex buildings with the multi-podium adopt the isolation technology,thus many new problems arise.In this paper,a large-scale building in a new district is taken as a example.The design plan of base isolation and roof-isolation is adopted.Using the podium on the isolated layer,the main tower and annex are connected together,and the roof isolation is used in column of entrance hall.A 3D finite element model of the base-isolated high-rise building is established by use of Sap2000 program.Then,seismic response of the building with or without the isolators are analysed including mode analysis and time-history analysis.At last,the vibration-resistant effect is researched in detail,and causes of some appearances are simply studied.
In recent years,the isolation technology has been recongnized as a mature technology,and more and more high-rise complex buildings with the multi-podium adopt the isolation technology,thus many new problems arise.In this paper,a large-scale building in a new district is taken as a example.The design plan of base isolation and roof-isolation is adopted.Using the podium on the isolated layer,the main tower and annex are connected together,and the roof isolation is used in column of entrance hall.A 3D finite element model of the base-isolated high-rise building is established by use of Sap2000 program.Then,seismic response of the building with or without the isolators are analysed including mode analysis and time-history analysis.At last,the vibration-resistant effect is researched in detail,and causes of some appearances are simply studied.
引文
[1]刘彦辉,杜永峰,周福霖,等.高层剪力墙复合基础隔震结构地震响应分析[J].工程力学,2011,28(7):144.
[2]GB 50011—2010建筑抗震设计规范[S].
[3]郑孝清,程才渊,黄维,等.首层柱顶隔震技术应用[J].佳木斯大学学报:自然科学版,2009,27(6).
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[5]李慧,张志公,杜永峰.大底盘多塔楼结构基础隔震非线性时程分析[J].兰州理工大学学报,2007,33(1).
[6]叶坤,李黎.大底盘多塔楼基础隔震设计分析[J].工程抗震,2001(3):22-26.
[7]卢文胜.多塔楼高层建筑结构抗震性能研究[D].上海:同济大学,2001:109-112.
[8]谭平,周云,周福霖.大底盘多塔楼结构混合隔震控制[J].世界地震工程,2007,23(2).
[2]GB 50011—2010建筑抗震设计规范[S].
[3]郑孝清,程才渊,黄维,等.首层柱顶隔震技术应用[J].佳木斯大学学报:自然科学版,2009,27(6).
[4]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[5]李慧,张志公,杜永峰.大底盘多塔楼结构基础隔震非线性时程分析[J].兰州理工大学学报,2007,33(1).
[6]叶坤,李黎.大底盘多塔楼基础隔震设计分析[J].工程抗震,2001(3):22-26.
[7]卢文胜.多塔楼高层建筑结构抗震性能研究[D].上海:同济大学,2001:109-112.
[8]谭平,周云,周福霖.大底盘多塔楼结构混合隔震控制[J].世界地震工程,2007,23(2).
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