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首页> 外文期刊>Structure and Infrastructure Engineering: Maintenance, Management, Life-Cycle Design and Performance >Life-cycle cost of civil infrastructure with emphasis on balancing structural performance and seismic risk of road network
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Life-cycle cost of civil infrastructure with emphasis on balancing structural performance and seismic risk of road network

机译：民用基础设施的生命周期成本，重点在于平衡路网的结构性能和地震风险

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摘要

The life-cycle cost (LCC) concepts and methods have impacted remarkably on the field of civil infrastructure. In this paper, LCC design concepts and methods are discussed with emphasis on bridges and road networks. The relationships among several performance measures are discussed. An attempt is made to provide rational balances of these measures by using a multi-objective genetic algorithm. Furthermore, LCC is evaluated focusing on the effects of earthquakes. At first, LCC analysis is formulated to consider the socio-economic effects due to the collapse of structures as well as the minimisation of lifetime maintenance cost. A stochastic model of structural response under earthquake effects is proposed. Then, the probability of failure of an individual bridge due to the earthquake excitation is calculated based on the reliability theory. In addition, LCC evaluations are performed not only for a single bridge but also for groups of bridges forming road networks.
机译：生命周期成本（LCC）的概念和方法对民用基础设施领域产生了显着影响。在本文中，讨论了LCC设计概念和方法，重点是桥梁和道路网络。讨论了几种绩效指标之间的关系。试图通过使用多目标遗传算法来提供这些度量的合理平衡。此外，评估LCC的重点是地震的影响。首先，制定LCC分析是为了考虑由于结构倒塌以及最小化终身维护成本而产生的社会经济影响。提出了地震作用下结构响应的随机模型。然后，基于可靠性理论，计算了由于地震激励而导致单个桥梁发生故障的概率。此外，LCC评估不仅针对单个桥梁，而且还针对形成道路网络的桥梁组进行评估。

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