基于ABAQUS的钢管混凝土T型柱节点抗震性能分析
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摘要
利用有限元软件ABAQUS,建立了T型截面钢管混凝土异形柱节点的数值模型,分析了不同轴压比以及两种不同加载条件下,模型构件的抗震性能。计算结果表明:钢管混凝土T形柱节点具有较好的抗震性能。其水平承载力屈服点较高,节点附近出现塑性铰以后还能有较明显的变形,延性增强,滞回曲线饱满,耗能性能好。在极限破坏状态时,柱外围混凝土会发生较大范围的开裂与破碎。T型钢管混凝土柱仍有可能承受更高的轴压比,钢管仍存在进一步变形耗能的能力。
With the finite element software ABAQUS,a numerical model for concrete filled steel tube T-typed column joint was established, and its seismic performance under different axial compression ratios and two types of loading conditions was analyzed. Results show that the T-typed column joint exhibits a good seismic performance,with a high yielding point which means the bearing capacity is enhanced and with obvious deformation following the appearance of plastic hinge,which means the ductility is heightened. The plump hysteresis loop means the desired energy dissipation capacity. It is also shown that a large amount of concrete around the column cracks and crushes at the ultimate failure state. The T-typed column might have a capacity to bear larger axial compression,and it is predicted that the steel tube could have a potential capacity of dissipating much more energy.
With the finite element software ABAQUS,a numerical model for concrete filled steel tube T-typed column joint was established, and its seismic performance under different axial compression ratios and two types of loading conditions was analyzed. Results show that the T-typed column joint exhibits a good seismic performance,with a high yielding point which means the bearing capacity is enhanced and with obvious deformation following the appearance of plastic hinge,which means the ductility is heightened. The plump hysteresis loop means the desired energy dissipation capacity. It is also shown that a large amount of concrete around the column cracks and crushes at the ultimate failure state. The T-typed column might have a capacity to bear larger axial compression,and it is predicted that the steel tube could have a potential capacity of dissipating much more energy.
引文
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[12]EDALAT B A,BARROS J A O.A ventura-gouveia.application of plastic-damage multidirectional fixed smeared crack model in analysis of RC structures[J].Engineering Structures,2016,125(5):374-391.
[13]CHOI E,CHO B S,JEON J S,et al.Bond behavior of steel deformed bars embedded in concrete confined by FRP wire jackets[J].Construction and Building Materials,2014,68(8):716-725.
[14]PATEL V I,QINF Q L,MUHAMMAD N S.Nonlinear analysis of axially loaded circular concrete-filled stainless steel tubular short columns[J].Journal of Constructional Steel Research,2014,101(3):9-18.
[2]薛建阳,杨青峰,刘祖强,等.型钢混凝土异形柱中框架和边框架抗震性能试验对比分析[J].西安建筑科技大学学报(自然科学版),2016,48(3):316-320.
[3]张爱林,于劲,徐敏,等.低周反复荷载作用下T形截面钢异形柱抗震性能试验研究[J].建筑结构学报,2010,32(7):20-28.
[4]中华人民共和国行业标准.混凝土异形柱结构技术规程JGJ149—2006[S].北京:中国建筑工业出版社,2006.
[5]张士前,陈宗平,王妮,等.型钢混凝土十形柱空间节点受剪机理及抗剪强度研究[J].土木工程学报,2014,47(9):84-93.
[6]韦建刚,傅斌,陈宝春.钢管混凝土哑铃形截面构件抗扭承载力研究[J].工程力学,2013,30(7):68-74.
[7]全金云.基于ABAQUS软件的型钢高强混凝土短肢剪力墙抗震性能研究[D].南宁:广西大学,2013.
[8]侯文龙.方钢管混凝土异形柱与钢梁节点性能试验与理论研究[D].西安:西安建筑科技大学,2011.
[9]魏翔.基于ABAQUS的混凝土结构非线性有限元分析[J].山西建筑,2011,37(2):32-34.
[10]王帅.ABAQUS在土木工程中的数值分析[J].福建建材,2013(11):11-12.
[11]王宏宇.钢筋混凝土框架结构抗倒塌能力非线性有限元分析[D].唐山:河北联合大学,2012.
[12]EDALAT B A,BARROS J A O.A ventura-gouveia.application of plastic-damage multidirectional fixed smeared crack model in analysis of RC structures[J].Engineering Structures,2016,125(5):374-391.
[13]CHOI E,CHO B S,JEON J S,et al.Bond behavior of steel deformed bars embedded in concrete confined by FRP wire jackets[J].Construction and Building Materials,2014,68(8):716-725.
[14]PATEL V I,QINF Q L,MUHAMMAD N S.Nonlinear analysis of axially loaded circular concrete-filled stainless steel tubular short columns[J].Journal of Constructional Steel Research,2014,101(3):9-18.