【摘要】 通过对现有高层建筑结构的体系评价,提出了新的超高层结构体系——附加阻尼装置的悬挂式巨型钢框架支撑体系.建立该体系的三维空间模型,运用有限元方法进行模态分析,并与巨型钢框架悬挂结构和巨型钢桁架悬挂结构的模态进行对比研究.计算研究表明,附加阻尼装置悬挂式巨型钢框架支撑体系具有良好的结构性态,巨型支撑与预应力拉索显著地提高抗侧刚度,同时附加阻尼器使结构密集模态成组及特征相似模态成对现象更为突出.更多还原

【Abstract】 Through evaluation of existing structural system,a new structural system that mega-suspended steel frame and brace structure with damper was presented.The three-dimension model of this new structure was established and the modal analysis of structure was discussed using finite element method.These analysis results were contrasted respectively with those of mega-frame-suspended structure and mega-truss-suspended structure.It is proved that it has great developing potential.The huge-brace and prestressed cable can improve the lateral stiffness,and the viscoelastic damper spotlights the phenomenon the dense modes group and similar modes come in pairs.更多还原