摘要
采用8条强速度脉冲地震记录,通过弹塑性增量动力时程分析,研究不同地震动强度水平时竖向不规则质量和刚度布置对钢筋混凝土框架结构抗震位移需求的影响.分析结果表明:速度脉冲地震作用下,楼层质量和刚度突变对结构位移需求有很大影响,地震动强度水平越大影响越显著;顶层质量突变对结构位移需求的影响较大,下部楼层刚度突变对结构位移需求和延性需求的影响很大.
Selected eight pulse-like ground motions for dynamic time-history analysis,this work investigates the influence of mass irregular or stiffness irregular reinforced concrete frame structures on seismic displacement demand.The results demonstrate that mass and stiffness discontinuity have importance influence on structural seismic displacement response,and seismic displacement response increases with increasing ground motion intensity.Top mass and lower stiffness variation both have relatively higher influence on structural displacement demand.
出处
《湘潭大学自然科学学报》
CAS
CSCD
北大核心
2010年第3期55-61,共7页
Natural Science Journal of Xiangtan University
基金
教育部博士点基金项目(20094301120001)
关键词
速度脉冲地震
竖向不规则
框架结构
抗震
位移需求
velocity pulse-like ground motion
vertical irregularities
frame structure
seismic
displacement demand
