摘要
基于锈蚀钢筋混凝土梁斜截面抗剪机理,分析箍筋锈蚀对混凝土抗剪能力和箍筋抗剪能力的影响,建立了箍筋锈蚀率与锈蚀箍筋混凝土简支梁抗剪承载力降低系数的拟合关系,考虑混凝土与箍筋的抗剪作用相互影响,提出了锈蚀箍筋混凝土简支梁抗剪承载力计算模型,该模型计算值与试验数据及ANSYS有限元分析值吻合较好;并借助Mat-lab软件编制了Monte Carlo计算程序,对锈蚀箍筋混凝土简支梁斜截面抗剪承载力进行可靠度评估,可为工程应用提供参考。
On the basis of shear mechanism of reinforced concrete structure with corroded stirrup,the influence of stirrup corrosion on the shear strength of concrete and stirrup is discussed and the relationship between shear capacity reduction coefficient of simply supported concrete beam with corroded stirrup and stirrup corrosion rate is established.In view of the interaction influence shear mechanism of concrete and stirrup,the calculation model for shear capacity of simply supported concrete beam with corroded stirrup is provided and the model value calculated by proposed shear strength formula of corroded stirrup concrete beam is very close to the experimental data and finite element analysis value.The Monte Carlo calculating program is compiled by means of Matlab software,the reliability assessment of shear capacity of simply supported concrete test beam with corroded stirrup is conducted and the reliability assessment conclusion can be used for the practical application.
出处
《中国农村水利水电》
北大核心
2010年第10期88-91,共4页
China Rural Water and Hydropower
关键词
混凝土梁
锈蚀箍筋
抗剪承载力
有限元分析
可靠度评估
concrete beam
corroded stirrup
shear capacity
finite element analysis
reliability assessment
