十字形钢筋混凝土轴心受压柱三维非线性数值模拟分析

Three Dimensional Nonlinear Numerical Simulation Analysis of Cross Shaped Reinforced Concrete Column Under Axial Loading

异形柱以其明显优势在我国得到广泛应用。为了研究十字形钢筋混凝土轴心受压柱的性能,以拟静力试验为基础,采用有限元分析方法建立有限元模型,选取Mander约束本构模型,对轴心受压情况下的十字形钢筋混凝土柱进行力学性能分析,讨论了箍筋间距、混凝土强度、配筋率等因素对十字形钢筋混凝土柱力学性能的影响。结果表明箍筋间距、混凝土强度和配筋率对十字形钢筋混凝土柱受力性能的影响都较大。

Special shaped columns have been widely used in our country because of their obvious advantages. In order to study the performance of reinforced concrete columns under axial compression, based on the quasi static test, this paper established finite element model by finite element analysis. Mander constitutive model was used to analyze the mechanical properties of cross shaped reinforced concrete column under axial compressive loads, and the influence of stirrup spacing, strength of concrete and concrete reinforcement ratio on the mechanical performance of cross shaped reinforced concrete column were discussed. The results show that stirrup spacing, strength of concrete and concrete reinforcement ratio have great influence on the stress performance of cross shaped concrete column.