摘要
为探索钢筋混凝土(RC) T形截面柱的抗震性能,本文以配筋率和轴压比为主要参数设计了7根RC T形柱。采用ABAQUS有限元软件建立RC T形柱的有限元模型,通过与已有的试验数据对比验证本文有限元建模的合理性。基于此进一步扩展参数分析,考察在低周反复荷载作用下配筋率和轴压比对T形柱抗震性能的影响规律。结果表明:增大配筋率,T形柱的峰值荷载有所提高,延性和耗能能力加强,减弱了其刚度退化;增大轴压比,T形柱的峰值荷载提高显著,但其延性和耗能能力减弱,加速了其刚度退化。为采用该类柱的框架体系抗震分析奠定基础。
In order to explore the seismic performance of reinforced concrete(RC)T-shaped columns,seven RC T-shaped columns are designed with the reinforcement ratio and axial compression ratio as the main parameters.The finite element model of RC T-shaped column is established by using ABAQUS finite element software.The rationality of the finite element model is verified by comparing with the existing experimental data.Based on the extended parameter analysis,the influence of reinforcement ratio and axial compression ratio on seismic performance of T-shaped columns under low cyclic loading is investigated.The results show that with the enlarging of the ratio of reinforcement,the peak load of the T-shaped column is increased,and the ductility and energy dissipation capacity are enhanced,whereas its stiffness degradation weakened.However,with the enlarging of the axial compression ratio,the peak load of the T-shaped column is increased significantly,wbereas the ductility and energy dissipation capacity is weakened.Along with it,the degradation of its stiffness is accelerated.It lays the foundation for seismic analysis of frame system adopting this kind of column.
作者
滕振超
赵添佳
刘宇
赵誉翔
Teng Zhen-chao;Zhao Tian-jia;Liu Yu;Zhao Yu-xiang(College of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163318,China)
出处
《工程抗震与加固改造》
北大核心
2019年第3期1-7,14,共8页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金项目(51578120)
东北石油大学研究生创新科研项目(YJSCX2017-025NEPU)
关键词
T形柱
轴压比
配筋率
抗震性能
设计建议
T-shaped section column
axial compression ratio
reinforcement ratio
seismic performance
design suggestions
