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复合型铅黏弹性阻尼器是综合利用多种耗能机制的新型阻尼器,针对其在结构中的模拟及减震性能的把握是实际设计应用中的关键问题。结合某4层框架减震实例,通过对设置复合型铅黏弹性阻尼器减震结构在多遇地震和罕遇地震作用下的动力时程分析,考察了阻尼器在减震结构中的耗能表现及减震效果。结果表明,复合型铅黏弹性阻尼器用于钢筋混凝土框架结构中可有效提高整体结构的抗震性能,并能减缓或避免主体结构构件的塑性破坏,保护主体结构的安全,实现结构“强柱弱梁”的屈服机制。
The composite lead viscoelastic damper is a new type of damper that comprehensively utilizes a variety of energy-consuming mechanisms. It is a key issue in practical design applications to grasp its simulation and shock absorption performance in the structure. In combination with a four-story frame damping example, the dynamic time history analysis of the shock absorption structure of the compound lead-type viscoelastic damper subjected to multiple earthquakes and rare earthquakes was analyzed to examine the energy dissipation of the damper in the damping structure. Performance and shock absorption. The results show that the composite lead viscoelastic damper can effectively improve the seismic performance of the whole structure in the reinforced concrete frame structure, and can slow down or avoid the plastic damage of the main structural component, protect the safety of the main structure, and achieve the structure “strong column weak” Beam’s yield mechanism.