基于桥梁技术状态的非线性劣化模型研究与应用

Research and Application of Nonlinear Deterioration Model Based on Bridge Technology Status

文章在参考桥梁技术状态劣化现有模型表达式的基础上,结合大量的桥梁工程技术状态评定数据,基于桥梁建成时的技术状态评分、同类型桥梁统计使用寿命及桥梁技术状态劣化率等参数,推导、建立了指数形式变化的非线性、分段函数表达式,并借助T型梁桥对所推导出的桥梁技术状态劣化模型表达式进行了验证,结果表明其精度和可靠性均高于现有的桥梁技术状态劣化模型,值得在桥梁管养中推广应用。

Based on referring to current deterioration model expressions of bridge technology status,combining a large number of assessment data of bridge engineering technology status,and based on the technical status scores at bridge completion,the statistical service life of bridges of the same type,the deterioration rate of bridge technology and other parameters,this article derived and established the nonlinear and piecewise function expressions for exponential variations,which was then verified by the derived bridge technology status deteriorating model via to T-beam bridges. The results showed that its accuracy and reliability are both higher than the existing bridge technology status deterioration model,thus it is worthy of promotion and application in bridge management and maintenance.