Optimal Multiasset Maintenance Budget Allocation in Highway Asset Management
Optimal Multiasset Maintenance Budget Allocation in Highway Asset Management
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DOI：
10.1061/(asce)te.1943-5436.0000414
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发表时间：
2012-10-01
期刊：
影响因子：
--
通讯作者：
Farhan, J.
中科院分区：
文献类型：
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作者：
Fwa, T. F.;Farhan, J.
在一个涉及多个公路资产类型的公路资产维护管理系统中，确定一个公平的可用预算的最佳分配到各个资产系统是一个重大的挑战。这是因为以下结果是可取的：（1）所有资产的维护需求得到充分解决，（2）以公平的方式最佳地满足各个资产系统的目标，以及（3）最佳地实现整个公路资产系统的目标。为了实现这些理想的结果，本文提出了一种两阶段方法来解决双层多资产、多目标路面网络维护最优预算分配问题。该方法的第一阶段独立地分析了各个多目标资产系统，为每个系统建立一个最优帕累托解族。最小化维护成本被选为单个资产系统的共同目标。这是与第二阶段分析相互作用的纽带。第二阶段采用最佳算法，通过执行跨资产权衡来将预算分配给各个资产，以实现给定的整体系统级目标的最佳预算解决方案。通过为每种资产类型定义最低性能阈值水平，第二阶段优化分析旨在通过维持单个资产系统在其各自最低阈值水平之上的等量性能改进来实现预算的公平分配。本文提出的方法的概念框架与一个数值例子来说明该程序的详细工作。DOI：10.1061/（ASCE）TE.1943-5436.0000414。(C)2012年美国土木工程师学会。
In a highway asset maintenance management system involving more than one highway asset type, identifying an equitable optimal allocation of available budget to individual asset systems is a major challenge. This is because the following outcomes are desirable: (1) the maintenance needs of all assets are adequately addressed, (2) the objectives of individual asset systems are optimally satisfied in an equitable manner, and (3) the objectives of the overall highway asset system are achieved optimally. To achieve these desirable outcomes, this paper proposes a two-stage approach in solving the dual-level multiasset, multiobjective pavement network maintenance optimal budget allocation problem. Stage I of the approach analyzes the individual multiobjective asset systems independently to establish for each a family of optimal Pareto solutions. Minimization of maintenance cost is selected as a common objective for the individual asset systems. This serves as the link for interaction with the Stage II analysis. Stage II adopts an optimal algorithm to allocate budget to individual assets by performing a cross-asset trade-off to achieve the optimal budget solution for the given overall system-level objectives. By defining a minimum performance threshold level for each asset type, the Stage II optimization analysis aims to achieve an equitable allocation of budget by maintaining equivalent amounts of performance improvements for the individual asset systems above their respective minimum threshold levels. The conceptual framework of the proposed approach is presented in this paper with a numerical example to illustrate the detailed working of the procedure. DOI: 10.1061/(ASCE)TE.1943-5436.0000414. (C) 2012 American Society of Civil Engineers.