高轴压比方钢管高强混凝土柱抗震性能仿真分析
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摘要
钢管混凝土因其良好的抗震性能被应用在高层建筑中,但有时在建筑的底部会出现高轴压比的情况,因此对高轴压比方钢管高强混凝土柱抗震性能展开来研究。采用有限元软件ABAQUS对7组高轴压比的方钢管高强混凝土柱进行了模拟,其结果表明,轴压比的增加,钢管混凝土柱承载力提高,但抗震性能降低;含钢率的增加,钢管混凝土柱承载力和抗震性能均提高;长细比的增加,钢管混凝土柱承载力和抗震性能均降低。
Concrete-filled steel tubular(CFST)has been applied in high-rise buildings for its good seismic behavior, but sometimes there is a high axial compression ratio at the bottom of buildings. Therefore, seismic behavior of high strength CFST columns under high axialcompression ratio is researched. The finite element software ABAQUS was adopted to analyse7 groups of high strength CFST columns under the high axial compression ratio.The results of this analysis indicate that with the increase of axial pressure ratio, the bearing capacity of CFST column increases, while its seismic behavior decreases;the bearing capacity and seismic behavior of CFST increases with the increase of sectional steel ratio;the bearing capacity and seismic behavior of CFST decreases as its slenderness ratio increases.
Concrete-filled steel tubular(CFST)has been applied in high-rise buildings for its good seismic behavior, but sometimes there is a high axial compression ratio at the bottom of buildings. Therefore, seismic behavior of high strength CFST columns under high axialcompression ratio is researched. The finite element software ABAQUS was adopted to analyse7 groups of high strength CFST columns under the high axial compression ratio.The results of this analysis indicate that with the increase of axial pressure ratio, the bearing capacity of CFST column increases, while its seismic behavior decreases;the bearing capacity and seismic behavior of CFST increases with the increase of sectional steel ratio;the bearing capacity and seismic behavior of CFST decreases as its slenderness ratio increases.
引文
[1]钟善桐.钢管混凝土结构[M].北京:清华大学出版社,2003.
[2]赵作周,贺小岗,杨光,等.高轴压比下钢管高强混凝土组合剪力墙抗震性能试验研究[J].建筑结构学报,2016,37(9):108-116.
[3]贾金青,马英超,封硕.高轴压比作用下型钢超高强混凝土框架抗震试验研究[J].湖南大学学报(自然科学版),2016,43(9):1-9.
[4]张国军.高轴压比高强混凝土框架柱抗震性能尺度效应分析[J].结构工程师,2017,33(4):117-122.
[5]张玉芬,周金富,朱戈,等.高轴压比下复式钢管混凝土柱-钢梁连接节点抗震性能试验[J].建筑科学与工程学报,2018,35(6):57-65.
[6]杜喜凯.往复荷载作用下钢管混凝土柱性能试验及理论分析[D].天津:天津大学,2010.
[2]赵作周,贺小岗,杨光,等.高轴压比下钢管高强混凝土组合剪力墙抗震性能试验研究[J].建筑结构学报,2016,37(9):108-116.
[3]贾金青,马英超,封硕.高轴压比作用下型钢超高强混凝土框架抗震试验研究[J].湖南大学学报(自然科学版),2016,43(9):1-9.
[4]张国军.高轴压比高强混凝土框架柱抗震性能尺度效应分析[J].结构工程师,2017,33(4):117-122.
[5]张玉芬,周金富,朱戈,等.高轴压比下复式钢管混凝土柱-钢梁连接节点抗震性能试验[J].建筑科学与工程学报,2018,35(6):57-65.
[6]杜喜凯.往复荷载作用下钢管混凝土柱性能试验及理论分析[D].天津:天津大学,2010.