L形实体式钢管混凝土组合柱抗震性能模拟研究

ABAQUS-BASED STUDY ON SEISMIC PERFORMANCE OF L-SHAPED DOUBLE-CONNECTED PLATE SOLID CONCRETE-FILLED STEEL TUBE COMPOSITE COLUMNS

为了研究L形实体式钢管混凝土组合柱抗震性能,文中使用Abaqus,建立并模拟了14个模型,研究了多个参数对组合柱抗震性能的影响,得出增大轴压比会减小延性;增大连接板宽度、钢管管径和厚度可以增加水平承载力,但变形能力变差;提高钢材强度可以增加水平承载力的同时改善延性;连接板厚和混凝土强度对抗震性能的影响很小。

In order to study the seismic performance of L-shaped solid concrete-filled steel tube composite columns,this paper uses Abaqus to establish and simulate 14 models to study the influence of multiple parameters on the seismic performance of composite columns.The results show that increasing the axial compression ratio would reduce the ductility,and increasing the width of the connecting plate,the diameter,and thickness of the steel pipe could increase the horizontal bearing capacity,but the deformation ability becomes worse.The horizontal bearing capacity rises as well as the ductility by promoting the strength of the steel.Additionally,the thickness of the connecting plate and the strength of the concrete have little influence on the seismic performance.