【摘要】 基于增量动力分析方法计算了6个人字形中心支撑钢框架的结构影响系数R和位移放大系数Cd。结果表明:对于不超过12层的人字形中心支撑钢框架,层数和跨数对各系数的影响都很小;结构超强系数RΩ所占的比重要明显大于结构延性折减系数Rμ。建议取Rμ=1.19,RΩ=3.98,R=4.71,Cd=5.55。更多还原

【Abstract】 The response modification factors(R) and displacement amplification factors(Cd) of six inverted V-CBSFs were calculated on the basis of incremental dynamic analysis(IDA).The results indicate that the influence of number of storey and span on all the factors is little for inverted V-CBSFs not exceeding 12 storeys;and the overstrength factors RΩ is more important than the ductility reduction factors Rμ in the composition of R.The following factors are suggested: Rμ=1.19,RΩ=3.98,R=4.71,Cd=5.55.更多还原