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针对城市轨道建设方案比选和决策问题,建立了考虑资金时间价值的城市轨道交通广义全寿命周期成本模型。分析了城市轨道交通外部成本构成,提出了城市轨道交通阻断成本概念,并构建了城市轨道交通阻断成本模型。以石家庄城市轨道交通1号线为例,定量计算了城市轨道交通不同线路敷设方式广义全寿命周期成本。计算结果表明:采用传统的全寿命周期成本评价方法,城市轨道交通地面线的全寿命周期成本为72.16亿元,成本最低;引入阻断成本的广义全寿命周期成本对各方案进行评价,地下线的广义全寿命周期成本为173.45亿元,总成本最低,为最优方案。
Aiming at the selection and decision-making of urban rail transit schemes, a generalized LCL cost model for urban rail transit considering the time value of funds is established. The paper analyzes the external cost structure of urban rail transit, puts forward the concept of urban rail transit blocking cost and constructs the urban rail transit blocking cost model. Taking Shijiazhuang Urban Rail Transit Line 1 as an example, the general life cycle costs of different lines of urban rail transit are quantitatively calculated. The calculation results show that the traditional life-cycle cost evaluation method, the urban rail transit ground line life cycle cost of 7.216 billion yuan, the lowest cost; the introduction of block-cost generalized life-cycle cost of the program to evaluate the program, the underground line The generalized life-cycle cost of 17.345 billion yuan, the lowest total cost, the optimal program.