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首页> 外文期刊>Journal of Infrastructure Systems >Expected Performance of Pavement Repair Works in a Global Network Optimization Model
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Expected Performance of Pavement Repair Works in a Global Network Optimization Model

机译：全球网络优化模型中路面修复工程的预期绩效

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摘要

A global network optimization model has been developed for generating a pavement repair plan using expected performance of pavement repair works. The expected performance of pavement repair works is represented by the expected age (service life) associated with potential repair actions. The expected age defines the anticipated pavement condition improvement obtained from applying a particular repair action. The expected age for each repair action is usually known from either experience or assumed as part of a design procedure. A constrained linear optimization model is formulated with its main objective of optimizing the expected pavement condition improvement. Pavement condition improvement is defined as the age gain in year lane kilometer or average age in years extended to a pavement network as a result of applying potential repair actions. The global linear model is subjected to a single budget constraint enforcing the total budget available for the entire network and limitation constraints placing lower and upper limits on the repair variables. The optimum repair plan provides a macroscopic solution as the repair variables represent pavement proportions that should be treated by the corresponding repair actions. The pavement network is divided into a number of systems with similar pavement structures and loading conditions. Presented sample results have indicated that global network optimization of the pavement management problem may not result in a rational budget allocation among deployed pavement systems. This problem can be solved by enforcing system improvement requirement constraints.
机译：已经开发了一种全球网络优化模型，用于使用路面维修工程的预期性能来生成路面维修计划。路面维修工程的预期性能由与潜在维修措施相关的预期年龄（使用寿命）表示。预期年龄定义了通过应用特定维修措施而获得的预期路面状况的改善。通常从经验中获悉或将其作为设计程序的一部分，通常可以知道每种维修措施的预期寿命。建立了一个约束线性优化模型，其主要目的是优化预期的路面状况。路面状况改善的定义是，由于采取了潜在的维修措施，使年车道公里数的年限增加或扩展到人行道网络的平均年限（以年为单位）。全局线性模型受单个预算约束的约束，该约束强制了整个网络可用的总预算，而约束约束则对修复变量设置了上限和下限。最佳维修计划提供了一个宏观解决方案，因为维修变量代表应由相应维修措施处理的路面比例。路面网络分为许多具有相似路面结构和荷载条件的系统。呈现的样本结果表明，路面管理问题的全球网络优化可能不会导致在已部署的路面系统之间进行合理的预算分配。可以通过强制执行系统改进要求约束来解决此问题。

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