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首页> 外文会议>Conference on Health Monitoring and Management of Civil Infrastructure Systems Mar 6-8, 2001, Newport Beach, USA >Bridge management strategy for a steel plate girder bridge based on minimum total life cycle cost
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Bridge management strategy for a steel plate girder bridge based on minimum total life cycle cost

机译：基于最小总生命周期成本的钢梁桥桥梁管理策略

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摘要

In this study, a bridge management strategy based on minimization of the total cost during considered years is discussed. As an example, a 50-years old steel railway plate girder bridge in Japan is selected. For this bridge, the following three strategies are considered: A. to demolish the bridge and to build a new one as a replacement and, B. to continue ordinary maintenance work with no major rehabilitation work, C. to make a diagnosis of the existing bridge and to rehabilitate it It is shown that the management strategy C in which the existing bridge continues to be used after the appropriate reinforcement based upon the detailed diagnosis is the most effective when the annual social discount ratio is less than 5 [%]. Furthermore, sensitivity analysis is carried out to understand the effect of uncertainties of various parameters on the total cost. Bootstrap analysis where the discount ratio is treated as a randomly fluctuating variable indicates that the total cost based on Strategy C is least influenced among three strategies because of small potential investment in the future.
机译：在这项研究中，讨论了在考虑的年份内基于总成本最小化的桥梁管理策略。例如，选择日本有50年历史的钢制铁路板梁桥。对于这座桥梁，考虑了以下三种策略：A.拆除桥梁并建造新的桥梁作为替换； B.继续进行日常的维护工作，而无需进行重大的修复工作； C.诊断现有的结果表明，当年度社会贴现率低于5 [％]时，根据详细诊断对现有桥梁进行适当加固后继续使用现有桥梁的管理策略C是最有效的。此外，进行敏感性分析以了解各种参数的不确定性对总成本的影响。折现率被视为随机波动变量的Bootstrap分析表明，由于将来的潜在投资很小，因此基于策略C的总成本对三种策略的影响最小。

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