T形截面方钢管混凝土组合异型柱的单向压弯力学性能和承载力研究

RESEARCH ON UNIDIRECTIONAL BENDING MECHANICAL PROPERTY AND BEARING CAPACITY OF T-SECTION SQUARE STEEL PIPE CONCRETE COMPOSITE SPECIALLY-SHAPED COLUMN

由于T形截面方钢管混凝土组合异型柱的压弯性能研究较少,为了对此特性展开分析研究,对其进行了单向压弯试验、有限元分析及理论计算;得到T形截面方钢管混凝土具有良好的延性和较好的承载力的结论,并提出了考虑钢管和混凝土组合刚度影响的等效长细比的计算公式。

There is seldom research on the bending property of T-section square steel pipe concrete composite specially-shaped column. Unidirectional bending test, finite element analysis and theoretical calculation are carried out to analyze the bending property; it is found that T-section square steel pipe concrete has favorable ductility and high bearing capacity, and formula is proposed for equivalent slenderness ratio with consideration of composite rigidity of steel pipe and concrete.