外包钢加固钢筋混凝土柱的数值模拟研究

Numerical Simulation of Reinforced Concrete Columns Strengthened with Steel Encased Steel

为研究外包钢板加固后钢筋混凝土柱的受力性能变化,采用ABAQUS有限元程序对外包钢板加固的矩形截面钢筋混凝土柱和未加固柱进行了非线性有限元数值模拟计算,并研究了不同钢板粘贴方式、钢板的间距等设计参数对加固效果的影响。计算结果表明:外包钢板加固后的钢筋混凝土柱的承载力和刚度有了明显提高,且钢板用量相同时,钢板宽度越小、间距越小的加固柱的承载力越高。

Study on reinforced concrete columns strengthened with steel plates stress performance changes,rectangular section of reinforced concrete columns strengthened by finite element program ABAQUS outsourcing steel plate Strengthened with column was simulated by nonlinear finite element numerical, and the effects of design parameters on the different way, the steel plate paste spacing of the reinforcement effect. The results show that the bearing capacity and stiffness of reinforced concrete columns strengthened with encased steel plate are obviously improved. When the same steel plate is used, the smaller the width of the steel plate and the smaller the spacing, the higher the bearing capacity of the strengthened columns will be obtained.