箍筋锈蚀钢筋混凝土梁及CFRP加固后抗剪性能有限元分析

摘要

Comparing with the test results , the shear properties of corroded stirrup concrete beams and Carbon Fiber Reinforced Polymer/Plastic(CFRP) reinforced beams is analyzed with the finite elements method and by using commercial software ABAQUS .The influence of three parameters shear span ratio ,stirrup spacing and the ratio of CFRP width and spacing on shear bearing capacity is studied .The results of finite element analysis are consistent with the test re‐sults .T he analysis results indicate that the shear capacity is reduced w hen the shear span ratio and stirrup spacing increase ;the strength of CFRP reinforced beams increases with the increase of CFRP width and spacing ratio .%应用有限元分析软件ABAQUS ，对箍筋锈蚀钢筋混凝土梁以及碳纤维布（CFRP）加固梁的抗剪性能进行了非线性数值分析。研究了剪跨比、箍筋间距以及CFRP宽度和间距的比值3个参数对箍筋锈蚀钢筋混凝土梁抗剪承载力的影响。有限元分析结果与试验结果相一致。结果表明：剪跨比和箍筋间距的增大均使箍筋锈蚀梁的抗剪承载力下降；CFRP的宽度和间距的比值越大，对锈蚀梁的加固效果越好。