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. T he 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. T he 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.
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2017年第1期86-96,共11页
Journal of Guangxi University（Natural Science Edition）
基金
国家自然科学基金资助项目(51478162)
河北省重点项目(14965406D)
关键词
T型柱
抗震性能
有限元分析
钢管混凝土
T column
seismic performance
finite element analysis
concrete filled steel tube
