地震灾害下城市生命线体系恢复力双维度综合评估

发布时间：2018-03-30 18:47

本文选题：地震　切入点：生命线　出处：《土木工程学报》2017年02期

【摘要】：针对现有生命线恢复力研究中单一维度评估的缺陷,引入基础设施网络均衡理论,设计综合考虑生命线网络物理状态和输送能力的体系性能时程响应函数PRF,同时构建包含灾害概率、灾害后果、恢复速率三个主要因素在内的,贯穿技术和组织双维度的生命线体系恢复力评估框架,实现地震灾害下城市生命线体系恢复力双维度综合评估。在以江苏省连云港市区供水网络为例的案例研究中,依据评估框架构建体系恢复力仿真流程,采用场景地震,对环状和网状两种供水体系的震害恢复力进行对比分析,结果显示,尽管网状供水网络的性能水平高于环状网络,但对体系恢复力的提升作用并不明显。而且城市供水体系恢复力随着恢复资源投入量的变化曲线显示,恢复资源的投入量存在最优值,能够以高效费比实现体系恢复力最大化。
[Abstract]:Aiming at the defect of single dimension evaluation in the research of lifeline resilience, this paper introduces the equilibrium theory of infrastructure network. The system performance time history response function (PRF), which considers the physical state and transportation capacity of lifeline network, is designed, and three main factors including disaster probability, disaster consequence and recovery rate are constructed. A framework for evaluating the resilience of lifeline systems running through both technical and organizational dimensions is presented to realize the comprehensive assessment of the resilience of urban lifeline systems under earthquake disasters. In the case study of Lianyungang urban water supply network in Jiangsu Province, a case study is carried out. According to the evaluation framework, the resilience simulation flow of the system is constructed, and the seismic resilience of the annular and reticular water supply systems is analyzed by using scene earthquakes. The results show that, although the performance level of the network water supply network is higher than that of the ring network, Moreover, the curve of the resilience of urban water supply system with the amount of resources input shows that there is an optimal value of the input load of the restoration resources, which can maximize the resilience of the system with the ratio of efficiency and cost.
【作者单位】：解放军理工大学;
【基金】：国家自然科学基金创新群体项目(51021001)
【分类号】：TU984.116;TU99

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