随着我国人口的增长、经济的发展，城市交通日渐拥堵，桥梁是道路的主要组成部分，对缓解交通压力、促进社会发展和经济建设具有不可替代的作用。运用工程经济的分析方法，讨论了桥梁重建方案经济分析模型与加固方案经济分析模型，为桥梁加固、重建从经济方面考虑，提出了确定方案与方法。结合工程实例，以寿命周期成本理论为依据，以平均年费用作为分析评价的指标，对重建和加固两种方案的经济效益进行对比分析。%Along with the growth of population and economic development in China, urban traffic congestion is becoming more and more serious. Bridge is the main part of road, playing an irreplaceable role to ease traffic pressure and promote social development and economic construction. This paper uses engineering economic analysis method to discuss the economic analysis model of bridge reconstruction plan and the reinforcement plan, and puts forward the scheme and method for the bridge reinforcement and reconstruction from economic considerations. Combined with engineering example, based on the theory of life cycle cost, with an average annual cost as the evaluation index, the economic benefits of the two schemes for reconstruction and strengthening are analyzed.
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