在役钢筋混凝土梁斜截面抗剪可靠度评估方法

Assessment method on anti-shear reliability of existing reinforced concrete beam

在役钢筋混凝土梁斜截面抗剪可靠性是迫切需要研究的问题。本文在分析锈蚀钢筋混凝土梁力学性能研究成果的基础上,建立了在役钢筋混凝土梁抗剪承载力的计算公式;针对在役构件具备实测资料的情况,将抗力和荷载进行随机变量处理,提出了评估在役钢筋混凝土梁斜截面抗剪可靠度的方法,并进行了实例分析和计算。

Reliability assessment on shear behavior of existing reinforced concrete beam is an important problem that needs to be studied. In this paper, the formula calculating shear-bearing capacity of existing reinforced concrete beam was deduced based on analyzing the research result of the mechanical property of corrosion reinforced concrete beam. According to the situation that there is the measured data of existing member, the method of reliability assessment on the shear behavior of existing reinforced concrete beam was presented by changing shear force and load to stochastic variable, and an illustration example was given.