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Modeling the spatial behavior of infrastructure condition
2002 (Engelska)Ingår i: Transportation Research Part B: Methodological, ISSN 0191-2615, E-ISSN 1879-2367, Vol. 36, nr 2, s. 171-194Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A new understanding of the spatial behavior of infrastructure condition is presented and a methodology for identifying this behavior is developed. Based on two deterioration mechanisms, causal and interactive, a nonstationary stochastic spatial model with a piecewise constant mean function is proposed. Based on this model, a methodology founded on nonparametric cluster analysis and dynamic programming is developed to identify the optimal spatial regions, referred to as fields, within which behavior is uniform and, consequently, condition can be estimated accurately. Validation using detailed distress data from three roadway facilities, each 15 km long, is presented. The value of the model is also demonstrated by comparing it against existing methods for characterizing infrastructure condition over space.

Ort, förlag, år, upplaga, sidor
2002. Vol. 36, nr 2, s. 171-194
Nyckelord [en]
infrastructure management, condition assessment, spatial modeling, stochastic processes, cluster analysis
Identifikatorer
URN: urn:nbn:se:kth:diva-21166ISI: 000172658600005OAI: oai:DiVA.org:kth-21166DiVA, id: diva2:339863
Anmärkning
QC 20100525Tillgänglig från: 2010-08-10 Skapad: 2010-08-10 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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Koutsopoulos, Harilaos
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