超高层钢筋混凝土空间网格盒式成束筒结构性能分析
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摘要
简要介绍了钢筋混凝土空间网格盒式成束筒新型结构。以某拟建工程为例,对比分析了该新型结构和常规框筒结构的周期、楼层位移和框架柱与核心筒的剪力分配等参数。结果表明,该新型结构在力学性能和抗震性能上优于常规框筒结构。采用MIDAS/Gen软件对该新型结构进行静力弹塑性分析,得到该结构性能点状态下的变形、基底剪力、层间位移角曲线和塑性铰分布;由此总结了该结构塑性铰的发展状态及构件屈服顺序。结果表明,该结构具有很好的延性,能够满足"大震不倒"的抗震设防要求。
A new structure called RC spatial grid cassette bundled tube structure was briefly described. The period,story displacement and shear force distribution between frame columns and corewall of the new structure were analyzed and compared with the conventional frame-corewall structure based on a proposed project. The results show that mechanical properties and seismic performance of the new structure are better than those of conventional frame-corewall structure.Pushover analysis of the new structure was also carried out with MIDAS / Gen software to obtain the deformation,base shear force,inter-layer displacement angle curve and the plastic hinge distribution under performance point state,and the plastic hinge development state and component yielding sequence of the structural system were summarized. The results show that the new structure has good ductility and can fulfill the seismic precautionary requirements of not collapse under the rare earthquake.
A new structure called RC spatial grid cassette bundled tube structure was briefly described. The period,story displacement and shear force distribution between frame columns and corewall of the new structure were analyzed and compared with the conventional frame-corewall structure based on a proposed project. The results show that mechanical properties and seismic performance of the new structure are better than those of conventional frame-corewall structure.Pushover analysis of the new structure was also carried out with MIDAS / Gen software to obtain the deformation,base shear force,inter-layer displacement angle curve and the plastic hinge distribution under performance point state,and the plastic hinge development state and component yielding sequence of the structural system were summarized. The results show that the new structure has good ductility and can fulfill the seismic precautionary requirements of not collapse under the rare earthquake.
引文
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[5]王其明,马克俭,陈志华,等.以石膏为模盒的钢筋混凝土密肋空腔大板试验研究[J].空间结构,2012,18(3):3-7.
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[2]王其明,马克俭,陈志华,等.钢筋混凝土密肋网格式框架-核心筒结构体系性能分析[J].建筑结构,2013,43(7):34-37.
[3]张华刚,马克俭,卢亚琴,等.以磷石膏为模板的密肋网格式框架小高层住宅结构体系[J].贵州工业大学学报:自然科学版,2008,37(4):28-32.
[4]贵州大学.磷石膏模板兼作吊顶的钢筋混凝土密肋井字大板楼盖:中国,20060200099[P].2007-02-07.
[5]王其明,马克俭,陈志华,等.以石膏为模盒的钢筋混凝土密肋空腔大板试验研究[J].空间结构,2012,18(3):3-7.
[6]刘帅.框架-核心筒结构在地震作用下剪力分配研究[D].哈尔滨:哈尔滨工业大学,2012.
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