Modelling Spatial Correlation for the Evaluation of Network System Reliability

Akkaya, Ayşen
Altay, Umut
Lifeline network systems extend spatially over large geographical regions. Such network systems are composed of interconnected components most of which can be idealized as long segments. Correlation resulting from similar material, construction procedure, soil conditions as well as external loading due to the same environmental factors should be taken into consideration and be quantified. In this respect the spatial correlation proportional to the distance between components should be taken into consideration. The main objective of this paper is to investigate the system reliability of networks subjected to environmental loads (e.g. earthquakes) by concentrating especially on the modelling and quantification of spatial correlation in a format suitable for the implementation in the evaluation of network reliability. For this purpose the main concepts of the random field theory will be applied and the scale of fluctuation will be utilized as a measure of spatial correlation. A case study based on real life data will be presented in order to illustrate the implementation of the methods developed in the paper.
International Conference on Civil and Environmental Engineering (8 - 10 Mayıs 2017)


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Citation Formats
A. Akkaya and U. Altay, “Modelling Spatial Correlation for the Evaluation of Network System Reliability,” presented at the International Conference on Civil and Environmental Engineering (8 - 10 Mayıs 2017), Nevşehir, Türkiye, 2017, Accessed: 00, 2021. [Online]. Available: