粘滞阻尼器消能减震结构的简化设计

Simplified Design Method for Energy Dissipation Systems Using Viscous Dampers

基于pushover分析方法,提出粘滞阻尼器消能减震结构的一个简化设计方法.先将多自由度体系等价成单自由度体系,对于给定的目标顶点位移,可以直接求出等价单自由度体系抵御强震所需的等价附加阻尼,并对其在多自由度体系中的分配提出建议.选用一个12层混凝土框架结构验证了该方法,其时程分析结果表明,对于pushover方法适应范围内的中、低层房屋可以取得满意的结果.

A simplified design method based on pushover analysis was developed for energy dissipation systems using viscous dampers. The procedure needed to transform a multi-degree-of-freedom system into an equivalent single-degree-of-freedom system. For a given target roof displacement, the required supplemental damping to resist strong earthquakes could be solved directly, and the damper distribution pattern was also proposed. The procedure was applied to a 12-storey reinforced concrete frame for the verification of the proposed method. According to the earthquake time history analysis results, satisfactory accuracy can be achieved for low- and medium-rise structures in which the pushover analysis can be applied.