钢管混凝土结构及钢结构单层单跨框架力学性能分析

为了对比分析方钢管混凝土柱-工字钢梁和方空钢管柱-工字钢梁两种框架结构的力学性能,运用有限元软件分别对上述两种框架结构进行了全尺寸建模,完成非线性有限元计算分析.结果表明,计算结果与实验数据吻合较好,验证了所建模型的准确性;两种框架结构的滞回曲线均为饱满的梭形,无明显的捏缩现象,且方钢管混凝土柱-工字钢梁框架梁端水平极限承载力高于方空钢管柱-工字钢梁框架结构.

Analysis on mechanical properties of concrete filled steel tube and steel structures with single story and single span frame

In order to compare and analyze the mechanical properties of two frame structures including both concrete filled square steel tube column-I beam and hollow square steel tube column-I beam frame structures, the full-scale modeling the above-mentioned two frame structures were carried out with the finite element software, and the nonlinear finite element calculation and analysis were completed. The results show that the calculated results agree well with the experimental data, which verifies the reliability of the established model. In addition, the hysteretic curves of two frame structures are in plump spindle-shape without obvious pinch phenomenon. Furthermore, the horizontal ultimate bearing capacity at the beam ends of concrete filled square steel tube column-I beam frame structure is higher than that of hollow square steel tube column-I beam frame structure.