Integrated infrastructure systems-A review

This paper provides a comprehensive review of literature on integrated infrastructure systems with an emphasis on interdependency types and definitions, complex network abstractions, and on different modeling and simulation techniques. An infrastructure interdependency matrix is presented to provide a better mapping of implementation, utilization, and in some cases a lack of integration among infrastructure systems. It is expected that this review will contribute to the advancement of the growing area of integrated infrastructure systems. Assessment of the research on integrated infrastructure modeling literature showed that the focus of most modeling efforts is mainly on short term operational purposes and extreme events. Long-term efforts to examine the impacts and assessment of future policies and scenarios are needed. Although 'integration' is being used in many studies on civil infrastructure, the level of detail or type of integration is not consistent and in some cases almost trivial.