基于养护管理系统的既有桥梁生命周期成本模型研究

Study on In-service Bridge Life Cycle Cost Model Based on Maintenance Management System

近年来,随着老龄化桥梁的不断增多,如何制定桥梁养护管理策略逐渐成为国内外学术界和工程界的研究热点。桥梁管理系统是解决该问题的一个有效手段。目前,桥梁养护管理系统研究的主要发展趋势是引入生命周期成分分析理念。论文首先介绍了生命周期成本分析的概念,然后尽可能全面地分析了既有桥梁在生命周期内的所有相关费用。在考虑资金时间价值的基础上,给出了一个基于生命周期成本分析的数学模型。最后,论文给出了一个计算案例对该模型的有效性进行了验证。结果表明该模型可为桥梁养护管理的决策者提供制定桥梁养护策略提供有效支持。

With the growing number of aged bridges in recent years, how to make the bridge maintenance strategy gradually becomes a hot point in the academic and engineering circles. Bridge maintenance management systemis an effective means to help solve the problem. In recent years the main tendency in the solution of the management system is to introduce the idea of the life-cycle cost analysis （LCCA）. After introducing the concept of LCCA, the paper tries every means to analyze the related costs of in-service bridge during its life cycle. Based on the capital＇s time value, the paper develops a mathematical model based on the life-cycle cost analysis. Finally, an example is presented to verify the efficiency of the model. The results indicate that the model can help the bridge maintenance management decision-maker to make reasonable maintenance strategies.