Geotechnical aspects of lifeline engineering

The general principles of lifeline engineering are discussed and applicatio ns are illustrated with reference to pipeline networks. Key research findin gs are summarised regarding the effects of utility construction on existing pipelines, advanced backfilling methods and materials, and soil-structure interaction of polyethylene pipelines. Pipeline behaviour during earthquake s is reviewed with respect to the effects of permanent and transient ground deformation. Pipeline system performance is addressed in light of geograph ic information systems (GIS) and the observed behaviour and analysis of lar ge networks during recent severe earthquakes.