高层斜交网格-RC核心筒结构地震反应能量分析

发布时间：2018-07-23 13:43

【摘要】：选用一定数量的地震波,采用PERFORM-3D有限元分析软件对5个不同结构特性的高层斜交网格-RC核心筒结构进行弹塑性时程分析,分析了此类结构在水平地震作用下总输入能在各能量项的分配规律;结构滞回耗能与结构参数以及地震动参数的关系;以及滞回耗能在构件和层间的分布规律。研究表明:结构滞回耗能和阻尼耗能为结构输入能量的主要耗散形式;不同地震波类型对结构滞回耗能影响较大;结构等效刚度比对结构总滞回耗能影响较小,然而对滞回耗能在各构件中的分配规律影响较大;结构滞回耗能主要为斜柱和连梁的塑性耗能,斜柱和连梁为关键耗能构件;斜柱及剪力墙耗能主要集中在底部楼层,而连梁耗能分布范围较广。
[Abstract]:Using a certain number of seismic waves and PERFORM-3D finite element analysis software, the elastic-plastic time-history analysis of five high-rise oblique grid-RC core tube structures with different structural characteristics is carried out. The distribution of total input energy in each energy item under horizontal earthquake, the relationship between hysteretic energy dissipation and structural parameters and ground motion parameters, and the distribution of hysteretic energy between components and layers are analyzed. The results show that hysteretic energy dissipation and damping energy dissipation are the main dissipative forms of input energy, different seismic wave types have great influence on hysteretic energy dissipation, and the equivalent stiffness of the structure is less than the total hysteretic energy dissipation of the structure. However, it has a great influence on the distribution of hysteretic energy in each member. The hysteretic energy dissipation of the structure is mainly the plastic energy dissipation of inclined column and connecting beam, the oblique column and connecting beam are the key energy dissipation components, and the energy consumption of inclined column and shear wall is mainly concentrated on the bottom floor. The energy consumption of the connecting beam is wide.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金(51478382) 人才科技基金(6040300609) 陕西省自然科学基础研究基金项目(2016JQ5082)
【分类号】：TU973.17;TU973.31

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