某异形钢结构的消能减震设计

Energy dissipation and seismic reduction design of a certain irregular steel structure

以一栋异形高层钢结构工程为例,为控制结构构件尺寸,减小地震作用下结构的层间位移,提高结构的抗震性能,故引入消能减震技术。采用黏滞阻尼器进行消能减震设计,分别运用YJK和Perform3D软件进行了多遇地震、设防地震和罕遇地震分析。结果表明:多遇地震作用下,减震结构的基底剪力和层间位移角均有不同程度的减小,减震效果明显。设防地震和罕遇地震作用下,黏滞阻尼器耗能占比较大,梁柱构件得到了较好的保护,各项指标满足减震性能目标。

This project is a high-rise steel structure with irregular shapes.In order to control the size of structural components,reduce inter story displacement under seismic action,and improve the seismic performance of the structure,energy dissipation and seismic reduction technology is introduced.Viscous dampers were used for energy dissipation and seismic reduction design.YJK and Perform3D software were used for analysis of frequent,fortified,and rare earthquakes.The results show that under frequent seismic action,the base shear force and inter story displacement angle of the seismic reduction structure are reduced to varying degrees,and the seismic reduction effect is significant.Under earthquake resistance and rare earthquakes,viscous dampers account for a large proportion of energy dissipation,and beam and column components are well protected.All indicators meet the seismic performance goals.