金属连梁阻尼器在高层剪力墙结构的设计方法

The Design Method of High-rise Shear Wall Structure by Using Metal Coupling-beam Dampers

目的研究金属连梁阻尼器在高层剪力墙结构的设计,解决在高层剪力墙结构连梁中如何合理的布置金属阻尼器的问题.方法使用钢剪切型阻尼器对某高层剪力墙结构进行消能减震设计,从减震原理出发,展现阻尼器如何通过为结构提供更大的附加阻尼比和影响结构的主振周期,进而降低结构的水平地震影响系数,实现显著降低结构在地震作用下的反应的过程,并对消能减震结构进行经济技术分析.结果阻尼器的设置增大了单位工程造价,但可使结构在地震下使用功能连续,虽然略增大造价,但保证了建筑物的安全及功能;基底剪力可减小13%～42%,最大层间位移角可减小15%～47%,倾覆力矩可减小32%～52%,保障了人民的人身安全和财产安全.结论通过计算无控结构在多遇地震下的层间位移以及结构待布置连梁位置处的内力,确定阻尼器的设计屈服位移和屈服力,并将阻尼器均匀的布设在每一层可大大降低结构的地震反应,为工程人员进行类似的高层剪力墙消能减震设计提供了经验和参考;阻尼器的设置虽然导致造价略有增加,但可显著的降低结构各项指标在地震作用下的反应.

This paper studied the design process of metal coupling-beam dampers in high-rise shear wall structure,and solved the problem of how to arrange the dampers reasonably in high shear wall structures.The steel shearing dampers were utilized to do energy dissipation suspension design in high-rise shear wall structures.This paper showed the process of how the dampers could lower the level of the earthquake affecting coefficient by providing additional damping ratio and lower the structural vibration period thus reducing the seismic structural response.The economic technique analysis for the passive energy dissipation structure was also conducted,the results showed that although the arrangement of the dampers slightly increased the construction cost,but could make sure the function of the structure could not be interrupted in the earthquake:Base shear could be reduced by 13%~42%,maximum inter-story displacement angle could be reduced by 15%~47%,overturning moment could be reduced by 32%~52%.By calculating the story displacement and the stress of the coupling beams to define the damper design yield displacement and yield force and then decorate the dampers to each floor could significantly reduce the seismic response of structures.Precious experience could be referenced by engineering personnel to do seismic energy dissipation design in similar high-rise shear wall structures.A smaller increase in investment could return fora big safety of buildings and functions.