A reliability-based optimization scheme for maintenance management in large-scale bridge networks
A reliability-based optimization scheme for maintenance management in large-scale bridge networks
复制标题
基于可靠性的大型桥网维护管理优化方案
DOI：
10.1016/j.trc.2015.01.008
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
S. Madanat
中科院分区：
文献类型：
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作者：
Xiaofei Hu;C. Daganzo;S. Madanat
在网桥管理问题中，计算网络配置是困难的。由于网络中网桥之间的相互依赖性，必须将它们一起分析。在过去的研究中采用的基于仿真的数值优化技术仅限于中等规模的网络。在本文中，开发了一个简单的框架，以确定最佳的维护计划的大型网络与许多桥梁。其目标是最大限度地减少中断，特别是在规划范围内和预算限制下，潜在的桥梁故障所造成的额外旅行距离。它是示意性的，然后验证，由于故障的车辆行驶里程的预期增加，可以近似为预期增加的总和，由于个别故障。这使得网络级问题可以分解为单桥问题，并有效地解决。计算工作量随着桥的数量线性增加。
Incorporating network configurations in bridge management problems is computationally difficult. Because of the interdependencies among bridges in a network, they have to be analyzed together. Simulation-based numerical optimization techniques adopted in past research are limited to networks of moderate sizes. In this paper, a simple framework is developed to determine optimal maintenance plans for large networks with many bridges. The objective is to minimize disruption, specifically, the extra travel distance caused by potential bridge failures over a planning horizon and under a budget constraint. It is conjectured and then verified that the expected increase in vehicle-miles traveled due to failures can be approximated by the sum of expected increases due to individual failures. This allows the network-level problem to be decomposed into single-bridge problems and tackled efficiently. The computational effort increases linearly with the number of bridges.