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新型高层装配式蜂窝型钢网格盒式双筒结构动力特性与抗震性能分析*
徐增茂,马克俭
摘 要

(贵州大学空间结构研究中心, 贵阳 550003)

[摘要]以某拟建工程为例,基于大型通用有限元软件ANSYS建立真实模型,采用振型反应谱分解法,研究了新型高层装配式蜂窝型钢网格盒式双筒结构的动力特性与抗震性能,详细分析了在地震作用下结构的周期、层间位移和层间位移角等。研究结果表明:在多遇地震作用时,新型高层装配式蜂窝型钢网格盒式双筒结构的抗扭刚度较大,沿竖向刚度和质量分布均匀,层间位移和层间位移角均满足规范要求,结构自身的动力特性和抗震性能好;在结构层高相同和用钢量相近的情况下,与普通结构相比,新型结构可以节约19-97%的钢筋混凝土用量,具有很好的应用价值。

[关键词]动力特性; 抗震性能; 新型高层装配式蜂窝型钢网格盒式双筒结构; 振型反应谱分解法

中图分类号:TU391文献标识码:A文章编号:1002-848X(2019)14-0013-05

 

Dynamic characteristics and seismic performance analysis of a new type of high-rise fabricated honeycomb steel grid boxed double-tube structure

Xu Zengmao, Ma Kejian

(Space Structure Research Center, Guizhou University, Guiyang 550003, China)

Abstract:Taking a proposed project as an example, a finite element model was established based on the finite element software ANSYS, the dynamic characteristics and seismic performance of a new type of high-rise fabricated honeycomb steel grid boxed double-tube structure were studied by mode-superposition response spectrum method. The period, interlayer displacement and interlayer displacement angle of the structure under earthquake action were analyzed. The research results show that the new high-rise assembled honeycomb steel mesh box type double-tube structure has large torsional stiffness and uniform vertical stiffness and mass distribution, and the interlayer displacement and interlayer displacement angle can meet the requirement of specification, the dynamic characteristics and seismic performance of the structure are good. When the structural layer height is the same and the steel volume is similar, compared with the common structure, the new structure can  save 19-97% of the reinforced concrete dosage, which has a good application value.

Keywords:dynamic characteristic; seismic performance; new type of high-rise assembled honeycomb steel grid box double tube structure; mode-superposition response spectrum method

 

*“十二五”国家科技支撑计划(2011BAJ09B01-01),贵州省科技创新人才团队建设([2014]4012),贵州大学研究生创新基金资助(研理工2017062)。

 

通讯作者:马克俭,学士,教授,博士生导师,Email: makejian2002@163.com。

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