南宁某大跨桁架转换结构水平地震作用分析
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摘要
桁架转换结构的力学计算相对简单,传力直接,传力路径明确,因此桁架转换的设计过程较其他几种转换形式简单。桁架转换层多设计为钢结构,这符合现代城市建筑中钢结构的发展趋势。以某5层带大跨度桁架转换层钢结构为研究对象,对该结构进行水平地震作用模态分析。分别采用反应谱法和弹性时程分析法对结构进行分析,研究该结构的地震响应以及转换层对该结构体系的整体地震动力性能的影响。利用有限元计算软件分析该结构在不同抗震性能水准下桁架转换层的承载能力是否能够满足要求。
Mechanical calculation of truss transfer structure is relatively simple,power transmission directly and the clear transmission path,which makes conversion truss design is more simple than other conversion forms.Truss conversion layer is the steel structure mostly.5 layers steel structure with large-span truss conversion layer was used as the research object to analyze the structural seismic response.The reaction spectrum method and elastic time history analysis method were used to analyze the structure to study the seismic responses of the structure and the transformation layer on the influence of the structural system of the whole seismic dynamic performance.The finite element analysis software was used to analyze whether the bearing capacity of the truss transfer layer under different seismic performance levels of the structure can meet the requirements of different seismic performance levels needs.
Mechanical calculation of truss transfer structure is relatively simple,power transmission directly and the clear transmission path,which makes conversion truss design is more simple than other conversion forms.Truss conversion layer is the steel structure mostly.5 layers steel structure with large-span truss conversion layer was used as the research object to analyze the structural seismic response.The reaction spectrum method and elastic time history analysis method were used to analyze the structure to study the seismic responses of the structure and the transformation layer on the influence of the structural system of the whole seismic dynamic performance.The finite element analysis software was used to analyze whether the bearing capacity of the truss transfer layer under different seismic performance levels of the structure can meet the requirements of different seismic performance levels needs.
引文
[1]建筑抗震设计规范:GB 50011—2010[S].2016年版.北京:中国建筑工业出版社,2016.
[2]高层民用建筑钢结构技术规程:JGJ 99—2015[S].北京:中国建筑工业出版社,2015.
[3]朱炳寅.建筑结构设计问答及分析[M].北京:中国建筑工业出版社,2009.
[2]高层民用建筑钢结构技术规程:JGJ 99—2015[S].北京:中国建筑工业出版社,2015.
[3]朱炳寅.建筑结构设计问答及分析[M].北京:中国建筑工业出版社,2009.