AGEING AND RENEWAL OF URBAN WATER INFRASTRUCTURE

摘要

A framework for the rehabilitation management of urban water infrastructure is introduced, which distinguishes between a long-term strategic approach on the network level, and a detailed approach for setting short term rehabilitation priorities on the single pipe level. Based on a detailed condition analysis, life time expectancies for water infrastructure pipe types are defined, future rehabilitation needs are calculated, and alternative strategies are systematically compared. Then, priorities for rehabilitation are defined with a set of decision criteria within the framework of the given budget of a calculated strategy by a formalised interactive elimination procedure. Both approaches found their way into the CARE-W and CARE-S decision support systems, which have been developed in research projects under the 5th framework programme of the EC.