For an in-depth understanding of the seismic behavior of shaped columns, a kind of T-shaped prefabricated special-shaped concrete-filled steel tubular with rectangular multi-cell columns was proposed in this paper. Furthermore, three specimens of full scale were designed and produced for low cyclic reversed loading and their failure morphology, hysteresis curve and P-Δ curve were obtained. The experimental results showed that the failure of the specimen was the bulking and cracking of the steel tube at the bottom of column along the loading axis, the powdery concrete dropped and finally the specimen failed to work. In addition, ABAQUS was used to perform finite element simulation on the three specimens in the experiment to verify the rationality and feasibility of the simulation. In this paper, by changing the axial compression ratio, concrete grade, steel grade, section height to thickness ratio and loading direction, the P-Δ curve, stiffness degradation, ductility and energy dissipation capacity of models under different parameters were analyzed for seismic performance. The simulation results showed that higher axial compression ratio leads to lower ultimate bearing capacity and ductility. With the increase of concrete grade, steel grade and section height to thickness ratio, the ultimate bearing capacity of the model increased but the ductility decreased. The shaped column specimens loaded in the 45° direction have higher bearing capacity, better ductility and seismic performance.

为了深入了解异形柱的抗震性能，提出了一种T形预制矩形截面多单元钢管混凝土。此外，针对低周向反向载荷及其破坏形态，磁滞曲线和P-Δ，设计并制作了三个全尺寸试样获得曲线。实验结果表明，试件的破坏是沿加载轴柱底部钢管的膨胀和开裂，粉状混凝土掉落，最终使试件失效。另外，在实验中使用ABAQUS对三个试样进行了有限元模拟，验证了模拟的合理性和可行性。本文通过改变轴向压缩比，混凝土等级，钢材等级，截面高度与厚度之比和载荷方向，得出P-Δ分析了模型在不同参数下的曲线，刚度退化，延性和能量耗散能力的抗震性能。仿真结果表明，较高的轴向压缩比导致较低的极限承载力和延性。随着混凝土等级，钢材等级和断面高厚比的增加，模型的极限承载力增加，但延性降低。在45°方向上加载的异型柱试样具有更高的承载能力，更好的延展性和抗震性能。