【摘要】 为研究加强层对某大厦抗震性能的影响,文章利用有限元分析程序MSC.Marc分别建立某大厦3种不同方案的有限元模型,对模型进行模态分析和弹性时程计算,并对比分析3种不同方案有限元模型的自振特性、水平地震作用下的位移和内力响应。分析结果表明,就该框架-核心筒结构而言,提高加强层处核心筒和外框架柱的抗震构造措施,带2处加强层的结构方案能较好地控制水平地震作用下结构的侧移。更多还原

【Abstract】 Three finite element models of a traffic building are established by using the finite element analysis program MSC.Marc to study the effect of strengthened storey on seismic response of the building.Free vibration characteristics and seismic response of displacement and internal force of three finite element models are analyzed based on the results of modal calculation and elastic time-history calculation.The results show that two strengthened storeys with appropriate stiffness and enhanced seismic tectonic measures for frame column and core tube are meaningful for frame-tube structures in terms of reducing seismic response of displacement.更多还原