摘要
基于试验研究,采用Open Sees系统对型钢混凝土（SRC）异形柱的滞回性能进行有限元模拟,计算结果与试验结果吻合较好.根据计算结果,获得了柱端的弯矩-曲率滞回曲线,分析了P-Δ效应的影响和耗能能力.结果表明：SRC异形柱的滞回曲线饱满对称;P-Δ效应使SRC异形柱的承载力降低3.2%-12.4%,延性变差;与钢筋混凝土异形柱相比,SRC异形柱的能量耗散系数大,耗能能力强;实腹式配钢试件的滞回性能优于空腹式配钢试件.研究为SRC异形柱的工程应用提供参考.
Based on the experimental study, the finite element simulation of the hysteretic behavior of steel reinforced concrete （SRC） special-shaped column was conducted by OpenSees. The moment-curvature hysteretic loops of column end were obtained, and the influence of P-A effect and energy dissipation were analyzed. Results show calculated that the hysteretic loops of SRC special-shaped columns are symmetric and plump. P-x/effect results in that the load bearing capacity of SRC special-shaped column reduces by 3.2%-12.4%, and the ductility turns worse. Compared with the reinforced concrete special-shaped column, the energy dissipation coefficient is large, showing the strong capacity of energy dissipation. The hysteretic performance of the column with solid steel is superior to that of the column with lattice steel. This study can provide reference for practical engineering application of SRC special-shaped column.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2014年第6期780-784,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金项目(51308444)
陕西省教育厅科研计划项目(2013JK0979)
西安建筑科技大学人才科技基金(RC1245)
关键词
型钢混凝土
异形柱
滞回性能
低周反复加载
有限元
steel reinforced concrete （SRC）
special-shaped column
hysteretic behavior
low cyclic reversed loading
finite element analysis
