社会网络分析法在城镇工程基础设施健康评价中的应用

针对工程性基础设施网络拓扑结构不合理导致的全局性破坏问题,将社会网络分析(SNA)方法的密度、凝聚子群、K-核、Lambda集合、切点和中心度等计算概念引入基础设施网络拓扑结构评价,提出了由网络完备度、层级边关联度、局部稳定成份比例、节点脆弱性、荷载运行均衡度等指标构成的评价体系。通过对重庆长寿城区的电力基础设施实例研究发现,社会网络分析方法能够对设施网络拓扑结构与电网运行过程中的稳定性进行客观评价,能够找出电网过载点、对设施网络拓扑结构的紧凑程度和完整程度进行评价以及对网络整体的性能做出评价。

The application of social network analysis in theinfrastructure project evaluation of urban health

To solve the problem of engineering in infrastructure failure caused by irrational topological destruction, the concepts of social network analysis(SNA) method are introduced into topology infrastructure network evaluation, including density, cohesive subgroups, K-core, Lambda-set,tangent pointand center of computing concepts, and a network evaluation system is put forward, which is constituted by the indexes of completeness, levels of border league degree, local stability composition ratio, node vulnerability,operation load balance index and so on. Empirical research on Changshou suggests that stability of network topology and network operation can be evaluated, overload points can be found effectively, and compact extent and completeness degree of topology can be evaluated byusing SNA model.