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Comparison of Post-Earthquake Highway Bridge Repair Costs

机译：地震后公路桥梁维修费用比较

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Post-earthquake repair costs are useful for evaluating different bridge design options in a performance-based setting. For example, expected post-earthquake repair cost estimates together with the estimated cost of new construction provide transportation managers with a ratio useful for inventory assessment and post-disaster decision support. The derivation of post-earthquake repair cost involves assessment of expected site seismicity, bridge configuration and geometry, structure seismic response, failure modes, and available repair methods and associated costs. rnThe repair cost probability distribution is derived using first and second moments from a simple graphical tool called Fourway. This tool uses three probabilistic models to evaluate repair costs based on the Pacific Earthquake Engineering Research Center’s performance-based earthquake engineering framework: (1) a probabilistic seismic demand model relating earthquake intensity measure to bridge response parameters, (2) a probabilistic damage model relating bridge demand to discrete damage states of key bridge components, and (3) a cost model relating damage states to the cost of available repair methods. rnThis procedure is used to compare the post-earthquake repair costs of four design options for a reinforced concrete highway overpass bridge in California with four singlecolumn bents. Bridge design options are represented by different column heights and circular and oblong column cross-sections with different dimensions. The column choices produce different post-earthquake repair costs due to differing demand model parameters for each structural component. The total repair cost for each design option is computed by combining the individual costs for each component. Repair cost ratios are used to compare the design options.
机译：地震后的维修费用对于评估基于性能的桥梁设计方案非常有用。例如，预期的地震后维修成本估算以及新建工程的估算成本为运输经理提供了一个有用的比率，可用于库存评估和灾后决策支持。地震后维修费用的推导涉及评估预期的现场地震活动性，桥梁构造和几何形状，结构地震响应，破坏模式以及可用的维修方法和相关费用。 rn维修成本概率分布是通过一个称为Fourway的简单图形工具使用第一矩和第二矩得出的。该工具基于太平洋地震工程研究中心基于性能的地震工程框架，使用三种概率模型来评估维修成本：（1）将地震烈度测度与桥梁响应参数相关联的概率地震需求模型，（2）与地震响应相关的概率破坏模型桥梁对关键桥梁部件的离散损坏状态的需求，以及（3）将损坏状态与可用维修方法的成本相关联的成本模型。 rn此程序用于比较加利福尼亚州具有四个单柱弯头的钢筋混凝土公路立交桥的四个设计方案的震后维修成本。桥梁设计选项由不同的柱高以及具有不同尺寸的圆形和长方形柱截面表示。由于每个结构部件的需求模型参数不同，因此选择柱会产生不同的震后维修成本。每个设计选项的总维修成本是通过组合每个组件的单个成本来计算的。维修成本比率用于比较设计方案。

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  • 会议地点 Long Beach CA(US)
  • 作者

    Kevin Mackie; John-Michael Wong; Bozidar Stojadinovic;

  • 作者单位

    Department of Civil and Environmental Engineering, University of Central Florida, Orlando, FL, 32816-2450,kmackie@mail.ucf.edu;

    Department of Civil and Environmental Engineering, University of California, Berkeley, CA, 94720-1710, jmwong@ce.berkeley.edu;

    Department of Civil and Environmental Engineering, University of California, Berkeley, CA, 94720-1710, boza@ce.berkeley.edu;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑结构;
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