摘要
基于我国抗震规范设计一6榀典型钢框架结构,并利用pushover方法确定结构的整体能力曲线,重点研究层数、加载方式、设防烈度对结构屈服位移比的影响,分析最大层间侧移比同结构顶点位移比的比值(β)的变化规律。结果表明:水平荷载分布模式对结构的整体能力曲线有较大影响,对结构的屈服位移比及β略有影响;结构的屈服位移比随着结构层数的增多而降低,β随着结构层数的增多而增加;设防烈度对结构的屈服位移及β影响很小。
Six plane steel frames were designed according to Chinese seismic code,the global capacity envelops of steel frames were obtained through pushover analysis.The structural yield displacement ratio and ratio between maximum inter-story drift and structural top displacement(β) were analyzed accounting for the story, lateral load distribution mode and seismic fortification intensity.The analysis results show that lateral load distribution mode has large effect on the global capacity envelops,and small effect on the structural yield displacement ratio and β.Structural yield displacement ratio decreases with the stories increase,and β increases with the stories increase.Seismic fortification intensity has small effect on structural yield displacement ratio and β.
出处
《工业建筑》
CSCD
北大核心
2010年第S1期579-582,558,共5页
Industrial Construction
基金
国家自然科学基金资助项目(50978175)
