桥梁与隧道方案全寿命周期费对比研究——以龙潭过江通道为例

Research on the Comparison of Full Life Cycle Cost for Bridges and Tunnels:Taking Longtan Rivel Crossing Channel as an Example

本文通过计算分析形成全寿命周期费用比选图并得出结论:桥梁方案建设期总投资为70.54亿,全寿命周期费用测算值为79.18亿,全寿命周期费用约为建设期总投资的1.12倍。隧道方案建设期总投资为101.16亿,全寿命周期费用测算值119.56亿,全寿命周期费用约为建设期总投资的1.19倍。桥梁方案建设期总投资相比隧道方案节约30.62亿,全寿命周期费用相比隧道方案节约40.85亿。按照全寿命周期费用进行对比,龙潭过江通道应选择投资偏低的桥梁方案。

The paper concludes through calculation and analysis that the total investment during the construction period of the bridge scheme is 7.054 billion yuan,with a calculated total life cycle cost of 7.918 billion yuan.The total life cycle cost is approximately 1.12 times the total investment during the construction period.The total investment during the construction period of the tunnel scheme is 10.116 billion yuan,with a calculated total life cycle cost of 11.956 billion yuan,which is approximately 1.19 times the total investment during the construction period.The total investment during the construction period of the bridge scheme is 3.062 billion yuan less than that of the tunnel scheme,and the total life cycle cost is 4.085 billion yuan less than that of the tunnel scheme.According to the comparison of full life cycle costs,the bridge scheme with lower investment should be selected for the Longtan River Crossing Channel.