%0 Journal Article
%T 考虑不确定性的既有桥梁网络管养对策优化<br>Maintenance strategy optimization of existing bridge network with consideration of uncertainty
%A 王晓明
%A 贺耀北
%A 贺拴海
%J 长安大学学报(自然科学版)
%D 2015
%X 为了实现辖区桥梁整体的优化管理，提出一种考虑不确定性的既有桥梁网络整体管养策略优化分析方法。采用可靠度指标评价桥梁构件、个体与网络的多级性能层次；构建了网级桥梁管养策略的优化框架；并分别建立了寿命期内桥梁性能演变的概率模型，以及养护策略效应和网络养护成本的数学模型；基于Visio网络图形建模方法，发展了一种桥梁网络拓扑结构的自动识别技术；提出一种基于失效分枝矩阵的网络性能概率评价方法，并以运营荷载和环境作用状况下的网络路径连通性能为例进行优化及分析。研究结果表明：该方法强化了对大节点数复杂网络的分析能力；该技术与多目标优化算法结合，实现了考虑不确定性的网级管养策略优化的全程计算机化；网级优化的Pareto前缘给出的都是全局最优解，网级管养优化策略明显提高了桥梁网络的整体性能，有效避免了传统决策引起的木桶短板效应，实现了资金的全局最优分配。<br>A novel maintenance optimization approach under uncertainty was proposed for existing bridge network to optimize the whole management. The reliability index was employed to evaluate the multilevel performance of bridge component, individual and network. The network-level maintenance optimization framework was constructed. The probability model of bridge life-cycle performance was established. Besides, the mathematical models of network maintenance strategy effect and cost were presented. Based on Visio network graphic modeling method, an auto-identification technology of bridge network topology was developed. A network performance probability evaluation method based on failure branch matrix was put forward. The network path connectivity subject to traffic loads and environmental erosion was taken as an example and analyzed. The results show that the method proposed in this paper can strengthen the processing ability for larger-node and complex network. The combination of the method and the multi-objective optimization algorithm realizes the whole computerization for the network-level maintenance strategy optimization with consideration of uncertainty. Pareto solution of network-level optimization is the global optimal solution. The network-level maintenance optimal strategies obviously improve the integral performance of bridge network, avoid the short board effect caused by the traditional strategies effectively, and achieve the global optimal allocation of funds
%K 桥梁工程
%K 桥梁网络
%K 性能
%K 可靠度
%K 管养策略优化
%K 网络拓扑&lt
%K br&gt
%K bridge engineering
%K bridge network
%K performance
%K reliability
%K maintenance strategy optimization
%K network topology
%U http://zzszrb.chd.edu.cn/oa/DArticle.aspx?type=view&id=20150610