江西某钢框架结构办公楼基础隔震研究
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摘要
基于江西某钢框架结构办公楼,通过SAP 2000有限元软件建立基础隔震和非基础隔震两个钢框架有限元计算模型,选用El Centro地震波对钢框架结构的动力反应进行详细分析。研究结果表明:基础隔震技术可以有效减小地震对钢框架结构的影响,可有效延长结构的自振周期,减小层间剪力、楼层加速度和层间相对位移,并可以增强结构的一体性,使钢框架的上部结构整体平动。
Taking a steel-frame structure office building in Jiangxi as an example,the dynamic principle and the finite element theory were used to establish the finite calculation model of two steel frameworks of base-isolated and non-baseisolated buildings through the finite element software SAP 2000. The El Centro seismic wave was selected to study the structural dynamic response in detail. The research results showed that the base isolation technique could effectively reduce the impact of the earthquake on the steel frame structure,effectively extend the period of natural vibration of the structure,reduce the inter-story shear force,floor acceleration,and the relative displacement between layers,and even could enhance the integration of the structure,then the entire structure of the steel frame could be translated.
Taking a steel-frame structure office building in Jiangxi as an example,the dynamic principle and the finite element theory were used to establish the finite calculation model of two steel frameworks of base-isolated and non-baseisolated buildings through the finite element software SAP 2000. The El Centro seismic wave was selected to study the structural dynamic response in detail. The research results showed that the base isolation technique could effectively reduce the impact of the earthquake on the steel frame structure,effectively extend the period of natural vibration of the structure,reduce the inter-story shear force,floor acceleration,and the relative displacement between layers,and even could enhance the integration of the structure,then the entire structure of the steel frame could be translated.
引文
[1]郑文智,王浩,杜永峰,等.环境激励下基础隔震结构时变模态频率的温度效应[J].东南大学学报(自然科学版),2017(5):999-1005.
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[11]赖正聪,潘文,白羽,等.基础隔震在高烈度区大高宽比剪力墙结构中的应用与试验研究[J].建筑结构学报,2017,38(9):62-73.
[12]王栋,周颖,吕西林.组合基础隔震结构设计及近断层地震反应分析[J].建筑结构,2016,46(11):66-71.
[13]赫中营,叶爱君.群桩效应对砂土地基中高桩承台群桩基础抗震性能的影响[J].土木工程学报,2014,47(1):117-126.
[14]中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB50011-2010[S].北京:中国建筑工业出版社,2010.
[15]王春刚,李宁,张壮南.刚性斜撑对冷弯薄壁型钢结构住宅体系抗震性能的影响研究[J].钢结构,2017,32(12):45-51.
[16]李肖.带水平加强层的超高层钢框架-核心筒结构设计分析[J].钢结构,2018,33(2):73-76.
[2]葛家琪,张玲,张国军,等.成都博物馆基础隔震结构隔震层抗拉性能设计研究[J].建筑结构学报,2016,37(11):16-23.
[3]SOON G T T,COSTANTINOU M C.Passive and Active Structural Vibration Control in Civil Engineering[M].Berlin:Springer,1994.
[4]PETROVCIC S,KILAR V.Seismic Retrofitting of Historic Masonry Structures with the Use of Base Isolation-Modeling and Analysis Aspects[J].International Journal of Architectural Heritage,2017,11(2):229-246.
[5]束伟农,朱忠义,张琳,等.北京新机场航站楼隔震设计与探讨[J].建筑结构,2017,47(18):6-9.
[6]ANAJAFI H,MEDINA R A.Comparison of the Seismic Performance of a Partial Mass Isolation Technique with Conventional TMDand Base-Isolation Systems Under Broad-Band and Narrow-Band Excitations[J].Engineering Structures,2018,158:110-123.
[7]徐忠根,朱祥盛,邓长根.有初始转角的隔震支座在不同方向地震水平力作用下的力学性能研究[J].建筑科学与工程学报,2017,34(4):41-47.
[8]刘慕广,谢壮宁,余先锋,等.屋盖倾角对悬挑曲面屋盖风压特性的影响[J].建筑结构学报,2018,39(1):21-27.
[9]BAGHERINEJAD K,SEYEDHAMED H,SHAHIN C.Cost Viability of a Base Isolation System for the Seismic Protection of Mid-Rise Reinforced Concrete Moment Frames[J].Journal of Civil Engineering Researchers,2017:1-7.
[10]杜永峰,郑文智,李万润,等.超长复杂基础隔震结构静动力特性温度相关性研究[J].工程力学,2017,34(7):69-78.
[11]赖正聪,潘文,白羽,等.基础隔震在高烈度区大高宽比剪力墙结构中的应用与试验研究[J].建筑结构学报,2017,38(9):62-73.
[12]王栋,周颖,吕西林.组合基础隔震结构设计及近断层地震反应分析[J].建筑结构,2016,46(11):66-71.
[13]赫中营,叶爱君.群桩效应对砂土地基中高桩承台群桩基础抗震性能的影响[J].土木工程学报,2014,47(1):117-126.
[14]中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB50011-2010[S].北京:中国建筑工业出版社,2010.
[15]王春刚,李宁,张壮南.刚性斜撑对冷弯薄壁型钢结构住宅体系抗震性能的影响研究[J].钢结构,2017,32(12):45-51.
[16]李肖.带水平加强层的超高层钢框架-核心筒结构设计分析[J].钢结构,2018,33(2):73-76.