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该文采用静力推覆和能力谱方法分析了基于我国抗震规范设计的12个Y形偏心支撑钢框架的地震反应折减系数R和超强系数及赘余度超强系数3,分析了结构层数、楼层高跨比对各系数的影响。研究结果表明:Y形偏心支撑钢框架的设计地震作用可在我国现行抗震规范的基础上降低20%左右。
In this paper, the seismic reduction coefficient R and super-strength coefficient and super-strength coefficient 3 of super-redundancy of seismic response of 12 Y-shaped eccentric supported steel frames based on China’s code for seismic design are analyzed by using static crushing and capacity spectrum method. The number of floors, floor height to floor ratio of the impact of various coefficients. The results show that the design seismic effect of Y-shaped eccentric steel frame can be reduced by about 20% on the basis of the current seismic code in China.