HRB600E钢筋混凝土柱抗震性能及有限元分析
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摘要
为研究配置HRB600E钢筋混凝土柱抗震性能,对不同轴压比和配箍率的5个试件进行低周反复加载试验,并通过ABAQUS软件进一步分析混凝土强度及配筋率对试件抗震性能的影响。研究结果表明:配置HRB600E钢筋的混凝土柱承载力高、变形及耗能性能良好;随轴压比增加,试件承载力、初始刚度增大,延性相对降低;随配箍率增大,试件延性和耗能能力增大。建立的ABAQUS有限元模型能较为合理准确的模拟出HRB600E钢筋混凝土柱的受力性能。随混凝土强度提高,各试件承载力相差不大,延性和耗能能力有所增强;随纵筋配筋率增加,试件承载力、延性和耗能能力增强。
To study the seismic performance of concrete columns reinforced with HRB600E steel bars,five specimens with different axial compression ratios and stirrup ratio were tested under the low cyclic load. And the effect of concrete strength and reinforcement ratio were analyzed by ABAQUS software.The results show that the concrete column with HRB600E steel bar has high bearing capacity,good deformation and energy dissipation performance. With the increase of axial compression ratio,the bearing capacity and the initial stiffness of the specimen increase,while the ductility decreases. As the ratio of the stirrup increases,the ductility and energy consumption increase. ABAQUS software can simulate the HRB600E reinforced concrete column reasonably and accurately. As concrete strength increases,the bearing capacity of the specimens has little difference,and the ductility and energy consumption capacity are enhanced. In addition, with the increase of the longitudinal reinforcement ratio, the bearing capacity,ductility and energy consumption of the specimens are enhanced.
To study the seismic performance of concrete columns reinforced with HRB600E steel bars,five specimens with different axial compression ratios and stirrup ratio were tested under the low cyclic load. And the effect of concrete strength and reinforcement ratio were analyzed by ABAQUS software.The results show that the concrete column with HRB600E steel bar has high bearing capacity,good deformation and energy dissipation performance. With the increase of axial compression ratio,the bearing capacity and the initial stiffness of the specimen increase,while the ductility decreases. As the ratio of the stirrup increases,the ductility and energy consumption increase. ABAQUS software can simulate the HRB600E reinforced concrete column reasonably and accurately. As concrete strength increases,the bearing capacity of the specimens has little difference,and the ductility and energy consumption capacity are enhanced. In addition, with the increase of the longitudinal reinforcement ratio, the bearing capacity,ductility and energy consumption of the specimens are enhanced.
引文
[1]赵珊珊.高强钢筋在框架和框剪结构中的经济性和安全性分析[D].天津:天津大学,2014.
[2]李艳艳,李明炀,苏恒博.高强钢筋高韧性混凝土框架中节点抗震性能试验研究[J].土木建筑与环境工程,2017,39(1):86-92.
[3]苏俊省,王君杰,王文彪,等.配置高强钢筋的混凝土矩形截面柱抗震性能试验研究[J].建筑结构学报,2014,35(11):20-27.
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[5]Ou Y C,Kurniawan D P.Shear behavior of reinforced concrete columns with high-strength steel and concrete[J].ACI Structural Journal,2015,112(1):35-46.
[6]Shin H O,Yoon Y S,Cook W D,et al.Enhancing the confinement of ultra-high-strength concrete columns using headed crossties[J].Engineering Structures,2016,127:86-100.
[7]韩超.高强钢筋约束高强混凝土柱结构性能试验研究[D].天津:天津大学,2014.
[8]李艳艳,苏恒博.600 MPa钢筋粘结锚固性能试验研究[J].建筑结构,2017(24):93-97.
[9]赵少伟,韩松,朱凯.600 MPa级钢筋混凝土短柱抗震性能研究[J].工业建筑,2017,47(6):1-5+12.
[10]刁波,李淑春,叶英华.反复荷载作用下混凝土异形柱结构累积损伤分析及试验研究[J].建筑结构学报,2008,29(1):57-63.
[11]熊学玉,张森.有粘结与无粘结混合配置预应力筋混凝土梁在竖向低周反复荷载下的抗震性能研究[J].建筑结构,2018(8):41-45.
[2]李艳艳,李明炀,苏恒博.高强钢筋高韧性混凝土框架中节点抗震性能试验研究[J].土木建筑与环境工程,2017,39(1):86-92.
[3]苏俊省,王君杰,王文彪,等.配置高强钢筋的混凝土矩形截面柱抗震性能试验研究[J].建筑结构学报,2014,35(11):20-27.
[4]Hooman T,Andres L,Jeffrey M,et al.Concrete beams reinforced with high-strength steel subjected to displacement reversals[J].ACI Structure Journal,2014,111(5):1037-1047.
[5]Ou Y C,Kurniawan D P.Shear behavior of reinforced concrete columns with high-strength steel and concrete[J].ACI Structural Journal,2015,112(1):35-46.
[6]Shin H O,Yoon Y S,Cook W D,et al.Enhancing the confinement of ultra-high-strength concrete columns using headed crossties[J].Engineering Structures,2016,127:86-100.
[7]韩超.高强钢筋约束高强混凝土柱结构性能试验研究[D].天津:天津大学,2014.
[8]李艳艳,苏恒博.600 MPa钢筋粘结锚固性能试验研究[J].建筑结构,2017(24):93-97.
[9]赵少伟,韩松,朱凯.600 MPa级钢筋混凝土短柱抗震性能研究[J].工业建筑,2017,47(6):1-5+12.
[10]刁波,李淑春,叶英华.反复荷载作用下混凝土异形柱结构累积损伤分析及试验研究[J].建筑结构学报,2008,29(1):57-63.
[11]熊学玉,张森.有粘结与无粘结混合配置预应力筋混凝土梁在竖向低周反复荷载下的抗震性能研究[J].建筑结构,2018(8):41-45.